CN103323608A - Measuring device comprising at least first analyzer for automatically determining the measured variable of liquid and sample preparation system - Google Patents

Measuring device comprising at least first analyzer for automatically determining the measured variable of liquid and sample preparation system Download PDF

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Publication number
CN103323608A
CN103323608A CN2013100875314A CN201310087531A CN103323608A CN 103323608 A CN103323608 A CN 103323608A CN 2013100875314 A CN2013100875314 A CN 2013100875314A CN 201310087531 A CN201310087531 A CN 201310087531A CN 103323608 A CN103323608 A CN 103323608A
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equipment
liquid
sample
analytical equipment
control module
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CN103323608B (en
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克劳迪娅·施洛特
卡特琳·洛卡伊
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Endress and Hauser Conducta GmbH and Co KG
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Endress and Hauser Conducta Gesellschaft fuer Mess und Regeltechnik mbH and Co KG
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
    • G01N35/00584—Control arrangements for automatic analysers
    • G01N35/00722—Communications; Identification
    • G01N35/00871—Communications between instruments or with remote terminals
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
    • G01N35/10—Devices for transferring samples or any liquids to, in, or from, the analysis apparatus, e.g. suction devices, injection devices
    • G01N35/1095—Devices for transferring samples or any liquids to, in, or from, the analysis apparatus, e.g. suction devices, injection devices for supplying the samples to flow-through analysers

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
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Abstract

The present invention discloses a measuring assembly device comprising at least a first analyzer for automatically determining the measured variables of liquid and a sample preparation system, wherein the analyzer has at least one sample source, a measuring chamber, at least one supplying, batching or metering system used for conveying a liquid sample to the measuring chamber from the sample source, and a control unit for executing a control analysis cycle in which at least one measurement value of the measured variables is determined. The sample preparation system comprises a supplying system connected with a liquid extraction position via a fluid pipeline and used for conveying the liquid to the sample source from the liquid extraction position, and a filter unit arranged in a liquid path between a sample extraction position and the sample source, wherein the control unit is in bidirectional data communication with the sample preparation system.

Description

Comprise at least the first analytical equipment of the measured variable of automatically determining liquid and the measurement mechanism of sample preparation system
Technical field
The present invention relates to measurement mechanism, comprising: at least the first analytical equipment of automatically determining the measured variable of liquid; And sample preparation system.
Background technology
This analytical equipment is used for for example process measurement technology, Environmental Technology or commercial measurement technology.For example, analytical equipment can be used to monitor and optimize the cleaning effect that purifies factory, for example, monitors active pond and purifies plant outlet.In addition, analytical equipment can be used for monitoring the quality of potable water or monitoring food.---also claiming analyte---content in fluid sample that for example is Cucumber of measured and monitoring.Analyte can for example be ion, such as ammonium, phosphate, silicate or nitrate, biology or biochemical compound, for example hormone or even microorganism.In the process measurement technology, other measured variable of especially determining by analytical equipment in the field of monitoring water is total content (TOC) or the chemical oxygen demand (COD) (COD) of organic carbon.Analytical equipment can for example be implemented as box-shaped device or floating drum.
Sample to be analyzed is usually processed in analytical equipment.Therefore, they are processed with one or more reagent, thereby in fluid sample chemical reaction occur.Preferably, reagent is chosen to so that can detect chemical reaction by physical method, for example, and by optical measurement or by measuring sensor electromotive force or that measure electric current or by measuring electric conductivity.For example, chemical reaction can be realized painted or change color, and it can detect by optical devices.In this case, color intensity is the tolerance of measured variable to be determined.Measured variable can determine by luminosity, and for example by autoradiolysis source in the future, for example the electromagnetic radiation of visible light sends and enters into fluid sample and transmitting by after the fluid sample, received the radiation of outgoing by suitable receiver.This receiver produces the measuring-signal that depends on the radiation intensity that receives, and can derive measured variable from this measuring-signal.
In order to use this analytical approach with automated manner, for example, in commercial Application or for monitoring, purify factory or outdoor water body, it is desirable to provide a kind of analytical equipment, it carries out desired analytical approach with automated manner.Except enough measuring accuracy, most important requirement is soundness, simple-to-maintain easy maintenance and guarantees enough work or Environmental security for such analytical equipment.
Automatic analysis equipment known in the state of the art.Therefore, for example DE10222822A1, DE10227032A1 and DE102009029305A1 disclose the analytical equipment of the measured variable of the analyte concentration in definite fluid sample, the especially fluid sample.These analytical equipments are implemented as box-shaped device in every kind of situation.Such equipment comprises control module, the liquid container that is used for reagent, standard solution and clean liquid is used for fluid sample and one or more reagent are carried and batches or be metered to the pump of measuring chamber and be used for measurement translator in the optical measurement agent treated of measuring chamber, on the fluid sample.Reagent, standard solution or clean liquid are transported to the measuring chamber from liquid container.Correspondingly, the liquid after the use can be transported to waste canister from measuring chamber.In some applications, especially in the field of water treatment, the liquid after the use also can be cycled back to water system.
Comprise at least one replaceable cartridge from the known analytical equipment of DE102009029305A1, at least a portion of liquid container and/or processing unit is integrated into this replaceable cartridge.The advantage of this embodiment is liquid container or the processing unit wearing terrain that must often be upgraded by operating personnel, and for example the wearing terrain of flexible pipe, flexible pipe or supply and the system of batching can be arranged in the box.For new liq being provided or changing wearing terrain, the maintainer then must only change " used " with new box and have liquid container to be replaced, i.e. the box of wearing terrain.
In the extensive application of this analytical equipment, especially in environmental area, liquid to be analyzed or monitoring can have certain solid portion.Solid portion is so that himself is for example muddy significantly.In the situation of the analytical approach of all methods that relates to optical measurement described above, solid portion can cause the wrong of analysis result or even so that measure impossible.For example, a large amount of entrained particles can cause the painted fact that no longer can be detected of fluid sample in the liquid.Therefore, often can filter liquide before carrying out the actual analysis method.Usually, usefulness is the automatic sample preparation system here, itself so that from for example water body or the liquid of corresponding Liquid extracting position in pond that purifies factory by the filter unit, then will be delivered to as the filter liquor of " to be analyzed " liquid the sample source of analytical equipment.Then, for the analytical cycle (analysis cycle) that the measured value of carrying out measured variable wherein to be determined is determined, analytical equipment can be the liquid of scheduled volume and process in the manner described above and analyze from sample source extracting liquid sample.The example of the filtrator during these are used can comprise porcelain filter, sieve filtrator and/or film filter.
Need often cleaning and filtering unit, can be deposited in the filter hole or in the filtrator space because be contained in particle in the liquid.In addition, for example in the situation of Environmental Technology and biotechnology applications, exist the microorganism of bacterium, algae or fungi for example and can be firmly held in danger in the filtrator.These can propagated on the filter substrate and in its hole and final even reduce and pass flowing of filtrator.Also in the undocumented German patent application 102011088235.9 sample preparation system is being described, its can be under the first mode of operation and the second mode of operation blocked operation, under the first mode of operation, liquid be transferred, filter from the sample extraction position and then filtrate further be delivered to the sample source of analytical equipment, under the second mode of operation, cleaning medium was sent the filter unit of sample preparation system.
Up to now, this sample preparation system in operation so that the duration of mode of operation has been scheduled to specific duration.Because the needs of the analytical equipment of liquid can fluctuate, the mode of operation of this sample preparation system can cause sometimes being transported to sample source than the desired more liquid of analytical equipment.Then this excessive liquid must be discharged from from analytical equipment.But, more by the liquid of sample preparation system conveying and filtration, require the cleaning of filter unit faster.When sample preparation system operated under clean conditions, it can not provide any liquid for analytical equipment.Therefore, during this time range, not execution analysis of analytical equipment cycle or only carry out a small amount of analytical cycle.
Summary of the invention
Therefore, the purpose of this invention is to provide a kind of measurement mechanism with at least one analytical equipment and sample preparation system of initial name type, in this case, guarantee enough liquid supplies of at least one analytical equipment.
This purpose realizes by a kind of measurement mechanism, and measurement mechanism comprises: at least the first analytical equipment that is used for automatically determining the measured variable of liquid; And sample preparation system;
Wherein, analytical equipment comprises:
At least one sample source,
Measuring chamber,
At least one supply and batching or metering system is used for and will be delivered to measuring chamber from the fluid sample of sample source, and
Control module, described control module is implemented the execution for the control analysis cycle, and at least one measured value of measured variable is determined in analytical cycle; And
Wherein, sample preparation system comprises:
Via the supply system that fluid line is connected with the Liquid extracting position, described supply system is implemented as the liquid from the Liquid extracting position is delivered to sample source, and
Be arranged on the filter unit in the liquid path between sample extraction position and the sample source;
Wherein, control module is implemented as with sample preparation system and carries out bidirectional data communication.
Terminology data communication refers to, information---information that particularly comprises parameter, status information or the control command---transmission from the control module to the sample preparation system and reverse transmission.Because control module is implemented as with sample preparation system and carries out bidirectional data communication, the control module of analytical equipment is the operation of Quality control preparation system as required.On the contrary, control module can obtain information about its current operation status from sample preparation system, thereby controls the liquid requirement of himself.Therefore, on the one hand can prevent that excess liq is provided to analytical equipment, simultaneously, on the other hand by suitable control analysis equipment, can avoid during cleaning or during the stop time of sample preparation system, providing very little liquid for the situation in execution analysis cycle.
The supply of analytical equipment and batch or metering system can comprise one or more pumps, for example membrane pump, piston pump---particularly syringe pump or peristaltic pump.This can comprise the one or more supply containers with reagent analytical equipment, and reagent was added to fluid sample before introducing measuring chamber or reagent can even be added in the measuring chamber.Supply that can be by analytical equipment and batch or conveying and the metering of reagent occur metering system.In order to determine the measured value of measured variable, analytical equipment can comprise measurement translator---in particular for the optical measurement transducer of carrying out photometric measurement, itself and the fluid sample that is contained in the measuring chamber, the pretreated fluid sample interaction (namely being implemented as the measured value of recording liquid sample) by adding one or more reagent in given situation.
The supply system of sample preparation system can comprise peristaltic pump, still, also can comprise membrane pump or piston pump.Filter unit can for example comprise meticulous hole porcelain filter (sintered filter, film filter, gap type filtrator or sieve filtrator.
Control module can comprise data handling system, its use provides the storer of one or more running programs, running program is used for the control of analytical equipment, and in given situation, be used for measurement mechanism miscellaneous equipment control and/or be used for the Quality control preparation system, and in given situation, for assessment of the measuring-signal of being sent by measurement translator.
In one embodiment, measurement mechanism comprises the one or more analyzing adjuncts equipment that add to the first analytical equipment, described analyzing adjuncts equipment is preferably used for determining the different measured variables of liquid, wherein each analyzing adjuncts equipment has sample source, measuring chamber and fluid sample is delivered to the supply of measuring chamber and batches or metering system from sample source
Wherein, in the analyzing adjuncts equipment one or the sample source of each are connected via liquid path with the sample source of the first analytical equipment, can be transported to the sample source of described one or more analyzing adjuncts equipment from the liquid of the sample source of the first analytical equipment along this liquid path.
For example, different measured variables can be the concentration of the various analytes in the liquid.
Liquid path can be formed by one or more fluid lines, and described fluid line is connected the sample source of additional analytical equipment with the sample source of the first analytical equipment.In the operating period of measurement mechanism, the fluid line that connects sample source can for example temporarily be interrupted by valve, so that one or more analytical equipments are temporarily thrown off from the liquid supply.
The advantage of this embodiment is that a plurality of analytical equipments can only supply liquid by the single sample source, and wherein, the liquid by sample preparation system supply and filtration is collected in the sample source of the first analytical equipment and from being assigned to additional analytical equipment here.Other option comprises a kind of variation, in this case, measurement mechanism has two sample preparation systems, and these two sample preparation systems are controlled by the first analytical equipment, particularly as required, the two-way communication between the control module by the first analytical equipment and two sample preparation systems is controlled.
If there are a plurality of other analytical equipments, the sample source of additional analytical equipment can directly be connected with the sample source of the first analytical equipment via direct liquid path in every kind of situation.In this embodiment, analytical equipment is connected in parallel about its liquid supply thus and can be in every kind of situation directly extracts their needed liquid from the sample source of the first analytical equipment.
In another kind changed, the sample source of analyzing adjuncts equipment can be connected in series one by one with cascade system, thereby the liquid of sample source that is delivered to one of analyzing adjuncts equipment can be transferred from the sample source of the analytical equipment of previous stage in every kind of situation.Also in this variation, can be equipped with for the device of temporary transient interrupt cascade formula by the liquid path of sample source.This device can comprise for example valve.Along the liquid path from the sample source of the first analytical equipment to a rear analytical equipment, this cascade can be provided with one or more pumps or container to be used for the intermediate storage of liquid.Thus, the equipment of this cascade can temporarily be thrown off from the liquid supply.
The analytical equipment of each measurement mechanism can have control module, and control module is implemented as by being determined that by corresponding analytical equipment at least one measured value of measured variable to be determined controls the execution of the analytical cycle of corresponding analysis equipment.For this reason, such as the first analytical equipment, additional analytical equipment has measurement translator in every kind of situation, and it is implemented as the measured value that record is contained in the measuring chamber and passes through the pretreated fluid sample of reagent in given situation.
For data communication, the control module of the first analytical equipment can with each analyzing adjuncts equipment connection, the control module with each analyzing adjuncts equipment is connected particularly.
The control module of the first analytical equipment can be implemented for the liquid of control from the sample source of sample source to the analyzing adjuncts equipment of the first analytical equipment or a plurality of analyzing adjuncts equipment and transmit.
The control module of the first analytical equipment can be implemented as sample source and the in the above described manner liquid supply of the sample source of connected one or more analyzing adjuncts equipment given situation of controlling as required from the Liquid extracting position to the first analytical equipment particularly.The sample preparation unit can have local data processing system, and it is with data---being specially status information---outputs to the control module of analytical equipment and receive control command from the first analytical equipment.But the important control of sample preparation unit is preferably carried out by the control module of the first analytical equipment.
In a preferred embodiment, sample preparation system can with the acquisition of liquid only manage by the first analytical equipment that in measurement mechanism, is used as main equipment.Analyzing adjuncts equipment is used as from equipment in this system, and namely they can not ownly require liquid from sample preparation system.Process the status information of sample preparation system and send liquid to optional equipment as required as the analytical equipment of main equipment.Therefore the control system of main equipment is implemented to from analyzing adjuncts equipment and receives the demand relevant information and process this information to control its oneself liquid supply and the liquid supply of analyzing adjuncts equipment.The demand relevant information can for example be measured value, and it represents the filling level of the sample source of analyzing adjuncts equipment.The filling level of sample source can be determined by the filling level sensor, still also determines by flow sensor, and it determines the current amount of liquid that is contained in the respective sample source from the respective liquid amount that sends to sample source.Perhaps, current demand also can be determined in the liquid that is provided to analyzing adjuncts equipment by the first analytical equipment and based on the current consumption data of analytical equipment by computer based fully.Be used as may be embodied to a report about its liquid demand from each analytical equipment of equipment and send to the first analytical equipment, be main equipment, the control system of the first analytical equipment is processed this report with sample preparation system and the liquid supply of each analytical equipment of control survey system.
In order to control the liquid supply of analyzing adjuncts equipment, control module can be implemented the valve that arranges for the one or more liquid paths between the sample source of the sample source that is actuated at the first analytical equipment and one or more analyzing adjuncts equipment and the pump that exists in these one or more liquid paths in given situation, so that carry liquid along these one or more liquid paths.
As already mentioned, sample preparation system can operate under the different operating state, particularly supply system is delivered to liquid under the production status of sample source from the Liquid extracting position therein, cleaning medium was sent under the clean conditions of filter unit and under dormant state therein, wherein, control module is implemented to based on the current operation status of exporting the test sample preparation system from the signal of sample preparation system and controls the first analytical equipment and/or control with this information and is connected for the analyzing adjuncts equipment that the control module with the first analytical equipment communicates.
In favourable embodiment, at least one analytical equipment of measurement mechanism comprises at least one interface, described at least one interface is used for the connection of at least one additional sensor, and described at least one additional sensor is specifically used for being recorded in the measured variable of the liquid that the Liquid extracting position exists.
This at least one additional sensor for example comprises measurement translator, and it is implemented as, and depend on to the output of the control module of analytical equipment via at least one interface will be by the measuring-signal of the measured variable of sensor record.Control module is carried out the function of measuring transducer for the sensor that connects.Additional sensor can for example be ion-selective electrode, dissolved oxygen sensor or the conductivity sensor of the ion concentration of pH sensor, recording liquid.For example, additional sensor is the pole probe in the submersible.This sensor can couple interface via at least one induction and be connected with control module, and energy and data can send via this interface.Preferably, sensor comprises electronic measurement circuit, and it will be converted by the analog measurement that measurement translator provides to the digital measured value of the control module of analytical equipment to be sent to.Transmission by digital measured value rather than analog measurement arrive control module can minimize error of transmission.
Sample preparation system can comprise heating arrangement, and described heating arrangement is used for connection supply system and the fluid line of Liquid extracting position and/or the adjustment of additive fluid pipeline of sample preparation system.Under the help of heating arrangement, even in the situation of the external temperature below freezing of liquid, also can guarantee measurement mechanism reliable operation out of doors.Heating arrangement can for example comprise the heating tape, and conduit was drawn and at least in part around and/or a plurality of fluid line to be heated in flexible heating tape particularly, heating tape.
Description of drawings
Now explain in more detail the present invention based on the embodiment shown in the accompanying drawing, wherein:
Fig. 1 is the schematic diagram with measurement mechanism of analytical equipment, sample preparation system and an additional sensor; And
Fig. 2 is the schematic diagram with measurement mechanism of three analytical equipments and sample preparation system.
Embodiment
Fig. 1 schematically shows measurement mechanism 1, has analytical equipment 2 and sample preparation system 6.In the example here, analytical equipment 2 comprises basic module 3 and replaceable cartridge 4.Basic module 3 comprises control system 5, and sample source (Fig. 2 Reference numeral 16) and measuring chamber (Fig. 2 Reference numeral 17).In this example, be arranged in the basic module 3 is the optical measurement transducer with radiation source and radiation receiver, radiation source and radiation receiver are arranged to pass fluid sample (be contained in the measuring chamber and in given situation, the pre-service by adding reagent) and impact radiation receiver then from the radiation of radiation source emission with respect to measuring chamber.Control system 5 is implemented as from the measured value of the measuring-signal derivation measured variable of radiation receiver output, for example analyte concentration.
Replaceable cartridge 4 comprises one or more liquid containers, wherein hold fluid sample to be analyzed, reagent, wash fluid pipeline and analytical equipment to be added measuring chamber clean liquid and/or be used for the standard solution of calibration.In addition, analytical equipment 2 comprise supply and batch or the metering system (not shown) so that the fluid sample from the sample source of arranging in the basic module 3 is delivered to measuring chamber.Supply and batch or metering system can be contained in the basic module 3 fully or be contained at least in part in the replaceable cartridge 4.Advantageously, supply and batch or the wearing terrain of metering system is contained in the box 4, and longer life and expensive parts, for example driver, supply and batch or metering system is contained in the basic module 3.
Analytical equipment 2 is connected with sample preparation system 6.Sample preparation system 6 provides liquid to be analyzed for analytical equipment 2.Control module 5 is implemented as with sample preparation system 6 and carries out two-way communication.In this case, control module 5 is connected the control signal of for example asking liquid along the direction transmission of arrow 9 via the data with sample preparation system 6.Sample preparation system 6 himself can be the information of---for example its current operation status---be sent to control module 5 about its current state along the steering handle of arrow 10.
Control module 5 comprises data handling system, data handling system has storer, one or more running programs are provided in the storer, one or more running programs are used for control analysis equipment 2 and/or Quality control preparation system 6, and the measuring-signal that assessment is sent by the optical measurement transducer of analytical equipment in given situation.Control module also can have for the supply of control analysis equipment 2 and batch or other running program of metering system.Data handling system also can comprise for by the input equipment of maintainer's input command or parameter and/or be used for receiving from higher level unit 8---for example from Process Control System---the interface of order, parameter or other data.In addition, control module 5 also can have for data---are specially measurement result or operation information---output to the user or outputing to for the output device that data is outputed to the interface of higher level unit.
Control module 5 comprises the one or more interfaces that connect at least one additional sensor 7.For example, can in the housing of analyzer, be equipped with the connector of outside exposure so that one or more sensors 7 are connected with the interface of control module 5.Sensor 7 can for example be the pH-dissolved oxygen DO that adds-or conductivity sensor, or definite H +Concentration outside the ion, for example ion-selective electrode of ammonium, nitrate, potassium, ammonium or muriatic concentration (ISE).The sensor 7 that can outside be connected to analytical equipment 2 is the rod-type probe preferably, and it can immerse in the medium to be monitored.Especially advantageously, but application sensors 7, and it has outputed to digital measured value control module 5.For this reason, suitable sensor for example is the Memosens digital sensor of present assignee, and it can be connected with analytical equipment via inductively coupling interface, and its especially anti-difficult circumstances impact.But, also can use numeral, the cable sensor of the assignee with Memosens technology here.Control module 5 is the function that the sensor 7 of addedly connection is carried out measuring transducers, and especially it is used for the demonstration of measured value and is used as user interface.In favourable embodiment, in given situation, can connect four different additional sensors 7 of as many as via interface.
Fig. 2 schematically show have three analytical equipments 2,14 and 15 and the measurement mechanism of sample preparation system 6, all analytical equipments 2,14 and 15 liquid that provide from sample extraction position 25 are provided sample preparation system 6.
Sample preparation system 6 comprises filter unit 12, and it is immersed in the liquid to be monitored and at 25 places, sample extraction position, for example outdoor water body or purify the Chi Chu of factory.Filter unit 12 is connected with supply system via liquid line and is connected with the sample source 16 of the first analytical equipment 2.Supply system 11 can for example be peristaltic pump.
Sample preparation system 6 can be in the first operator scheme, as described, and with the sample source 16 of liquid from sample extraction position 25 carry over score desorption devices 2.In the second operator scheme, sample preparation system 6 can transmit cleaning medium through filter unit, with cleaning and flush filter unit.In the operating period of sample preparation system, it can not be sent to liquid analytical equipment 2 to be used for analysis in cleaning mode.But, sample preparation system 6 is not supplied liquid even sample source is sized to, a plurality of fluid samples also can be moved out of be used for to analyze from sample source, thereby even but when sample preparation system is not sent to sample source with new liq this moment also execution analysis cycle.In the 3rd operator scheme, sample preparation system 6 can be in dormant state, and wherein, supply system 11 is closed or is in standby mode.
Carry from filter unit 12 to the first analyzer 2 liquid institute via fluid line heat by heating arrangement 13, thereby measurement mechanism also can safe operation in the situation of low ambient temperature.Heating arrangement 13 can for example be implemented with the flexible pipe form that is equipped with heating system.This can comprise flexible pipe, therein, except the chamber that is used for fluid to be heated, extends the one or more heating cables that for example are the heating tape form.
Additional analyzer 14 and 15 each have sample source 18,19.And additional analyzer 14,15 also is provided with the structure identical with the first analyzer 2, and namely they have replaceable cartridge 4, measuring chamber and the measurement translator of carrying liqs container particularly in every kind of situation, and control module 21 and 22.Advantageously, three analyzers 2,14 and 15 are implemented for definite different parameter.Like this, for example, the first analyzer 2 can be determined the nitrate concentration of liquid to be monitored, and the second analyzer 14 is determined the ammonium concentration of liquid to be monitored, and the 3rd analyzer is determined the phosphate concn of liquid to be monitored.For this reason, analyzer 2,14 and 15 execution analysis cycles, wherein, in every kind of situation, at least one measured value of its measured variable to be monitored is determined.Analytical cycle comprises fluid sample---namely being present in a certain amount of liquid in the sample source---shifts out, possible one or more pre-treatment step, in this case, one or more reagent are added to fluid sample, pretreated fluid sample to the record that passes through measurement translator of the measuring-signal of conveying, the representative of measuring chamber 17 measured variable to be monitored and determining and export based on the measured value that pass through control module 5 current fluid samples of the measuring-signal of measurement translator.Between two analytical cycles, control module 5 can be controlled analytical equipment and carry out one or more calibration cycles, and in this case, the measured value of calibration criterion is determined; Or carry out one or more cleaning cycles, in this case, cleaning medium was sent supply and was batched or the fluid line of metering units and sent measuring chamber.
Analytical equipment 14 directly is not connected with sample preparation system 6 with the sample source 18,19 of being connected, but is connected to one by one the sample source 16 of the first analytical equipment 2 with cascade system.In this case, the sample source 18 of the second analytical equipment 14 is connected with the sample source 16 of the first analytical equipment via fluid line 23, and the sample source 19 of the 3rd analytical equipment 15 is connected via the sample source 18 of fluid line 24 with the second analytical equipment 14 of front.
The first analytical equipment 2 is used as main equipment in this measurement mechanism, namely it is unique of contacting with sample preparation system 6 in the analytical equipment 2,14 and 15, and its management is from the liquid of sample preparation system 6 supplies.In this case, it is processed and considers that also sample preparation system 6 sends to the status information of the control module 5 of analytical equipment 2.Analyzing adjuncts equipment 14 and 15 is used as from equipment.In order to control liquid to each analytical equipment 2 of measurement mechanism, 14 and 15 distribution, control module 5 and analyzing adjuncts equipment 14,15 the control module 21,22 that is used for data communication are connected.
Sample source 16,18 and 19 has one or more filling level sensors, and its measured value is supplied to the control system of related analytical equipment in every kind of situation.If the filling level in analyzing adjuncts equipment 14, one of 15 the sample source 18,19 is down to below the predetermined threshold, corresponding report will be output to the control module 5 of the first analytical equipment 2.Then, this gives analytical equipment 14,15 specific amount of liquid and requires from sample preparation system 6 more liquid in given situation.In this case, control system 5 is also considered the current operation status of sample preparation system 6, and the filling level in all the other sample source 16,18,19 of measurement mechanism, to guarantee that all analytical equipments 2,14 and 15 have the liquid of q.s, make it possible to carry out the analytical cycle that arranges at no distant date.Control system 5 can also be implemented as Quality control preparation system, the first analytical equipment 2 and analyzing adjuncts equipment 14,15, so that sample preparation system 6 and analytical equipment 2,14,15 different operation modes fit each other.Thus, it can be for example be controlled to two analytical equipments 14,15 when sample preparation system is in the cleaning mode so that they are to from the liquid demand of sample preparation system 6 still less, for example, carry out automatically cleaning or calibration by the frequency or the control analysis equipment 14,15 that reduce analytical cycle.
If the filling level in the sample source 16,18 or 19 is elevated to more than the predetermined threshold, then control system 5 is correspondingly controlled the distribution to the liquid in additional samples source, so that do not waste as far as possible liquid.In given situation, simultaneously, control system 5 is set sample preparation system 6 simultaneously to avoid carrying more liquid in dormant state or in cleaning mode.

Claims (13)

1. measurement mechanism (1,100) comprising: the first analytical equipment (2) that is used for automatically determining the measured variable of liquid at least; And sample preparation system (6);
Wherein, described analytical equipment (2) comprising:
At least one sample source (16),
Measuring chamber (17),
At least one supply and batching or metering system is used for fluid sample is delivered to described measuring chamber (17) from described sample source (16), and
Control module (5), described control module (5) is implemented the execution for the control analysis cycle, is determined at least one measured value of measured variable described in the described analytical cycle; And
Wherein, described sample preparation system (6) comprising:
Supply system (11) is connected with Liquid extracting position (25) via fluid line, and described supply system (11) is implemented for a liquid from described Liquid extracting position (25) and is transported to described sample source (16), and
Filter unit (12) is arranged in the liquid path between described sample extraction position (25) and the described sample source (16);
Be characterised in that, described control module (5) is implemented to described sample preparation system (6) and carries out bidirectional data communication.
2. measurement mechanism as claimed in claim 1 (100),
Comprise the one or more analyzing adjuncts equipment (14,15) that add to described the first analytical equipment (2), described analyzing adjuncts equipment (14,15) is preferably used for determining the different measured variables of liquid, and each of wherein said analyzing adjuncts equipment (14,15) has sample source (18,19), measuring chamber and be used for fluid sample is delivered to the supply of this measuring chamber and batches or metering system from this sample source.
Wherein, one of described analyzing adjuncts equipment (14,15) or the sample source (18,19) of each are connected via liquid path with the sample source (16) of described the first analytical equipment (2), can be transported to from the sample source (16) of described the first analytical equipment (2) sample source (18,19) of one or more described analyzing adjuncts equipment (14,15) along this liquid path liquid.
3. measurement mechanism as claimed in claim 2 (100),
Wherein, the sample source (18,19) of described analyzing adjuncts equipment (14,15) can connect one by one with cascade system.
4. measurement mechanism (100) as claimed in claim 2 or claim 3,
Wherein, each analytical equipment of described measurement mechanism (2,14,15) has control module (5,21,22), and described control module is implemented to by determining to treat to be controlled by at least one measured value of the definite measured variable of corresponding analysis equipment (2,14,15) the execution of the analytical cycle of this corresponding analysis equipment (2,14,15).
5. such as a described measurement mechanism (100) in the claim 2 to 4,
Wherein, the control module (5) of described the first analytical equipment (2) is connected with each described analyzing adjuncts equipment (14,15)---being connected with the control module (21,22) of each described analyzing adjuncts equipment (2,14,15) especially---to be used for data communication.
6. such as a described measurement mechanism (100) in the claim 2 to 5,
Wherein, the control module (5) of described the first analytical equipment (2) be implemented to control liquid from the sample source (16) of described the first analytical equipment (2) to a described analyzing adjuncts equipment (14) sample source (18) or to the conveying of the sample source (18,19) of a plurality of described analyzing adjuncts equipment (14,15).
7. such as a described measurement mechanism (1,100) in the claim 1 to 6,
Wherein, the control module (5) of described the first analytical equipment (2) is implemented to and controls as required sample source (16) and given situation the supply of the sample source (18,19) of connected one or more described analyzing adjuncts equipment (14,15) of liquid from described Liquid extracting position (25) to described the first analytical equipment (2).
8. such as claim 6 or 7 described measurement mechanisms (100), wherein, described the first analytical equipment (2) is as main equipment, and one or more described analyzing adjuncts equipment (14,15) are used as from equipment, and the control module of wherein said the first analytical equipment (2) is implemented to the needs based on the relevant information of described one or more analyzing adjuncts equipment (14,15), distributes to the sample source (16) of described the first analytical equipment (2) and one or more additional samples source (18,19) of described one or more analyzing adjuncts equipment (14,15).
9. such as a described measurement mechanism (1,100) in the claim 1 to 8,
Wherein, described sample preparation system (6) can be operated under the different operating state, particularly in described supply system liquid is delivered under the production status of sample source (16) from Liquid extracting position (25), transmitting by filter unit (12) under the clean conditions of cleaning medium, and under dormant state, and
Wherein, described control module (5) is implemented to based on the signal of described sample preparation system (6) and exports to detect the current operation status of described sample preparation system and the control of the analyzing adjuncts equipment (14,15) that comes with this information to communicate for the control of described the first analytical equipment (2) and/or for the control module (5) that is connected with described the first analytical equipment (2).
10. such as a described measurement mechanism (1,100) in the claim 1 to 9,
Wherein, at least one analytical equipment (2) of described measurement mechanism (1,100) comprises at least one interface, described at least one interface is used for the connection of at least one additional sensor (7), and described at least one additional sensor (7) is for the measured value of the measured variable that is recorded in the liquid of locating described Liquid extracting position (25) especially.
11. measurement mechanism as claimed in claim 10 (1,100),
Wherein, described at least one additional sensor (7) comprises measurement translator, is implemented to that depend on to the output of the control module (5) of described analytical equipment (2) via described at least one interface will be by the measuring-signal of the measured variable of described sensor (7) record.
12. such as a described measurement mechanism (1,100) in the claim 1 to 11,
Wherein, described sample preparation system (6) comprises heating arrangement, and described heating arrangement is used for described sample preparation system (6) and connects the fluid line of described supply system (11) and described Liquid extracting position (25) and/or the adjustment of additive fluid pipeline.
13. measurement mechanism as claimed in claim 12 (1,100),
Wherein, described heating arrangement comprises the heating tape---conduit was drawn and at least in part around fluid line to be heated and/or regulate fluid line to be heated in flexible heating tape particularly, heating tape.
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