CN204881898U - Full metal temperature sensor of corrosion -resistant type - Google Patents
Full metal temperature sensor of corrosion -resistant type Download PDFInfo
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- CN204881898U CN204881898U CN201520388222.5U CN201520388222U CN204881898U CN 204881898 U CN204881898 U CN 204881898U CN 201520388222 U CN201520388222 U CN 201520388222U CN 204881898 U CN204881898 U CN 204881898U
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Abstract
The utility model discloses a full metal temperature sensor of corrosion -resistant type, include all with the upper cover, casing and the probe that are able to bear or endure the corrosion metals preparation to reach the circuit part, be used for the partial plastic part of fixed circuit, the utility model discloses an anti corrosion metals material is made, anticorrosive durable, the reliability is high, the interference killing feature is strong, adopt not embedment of interference fit structure, protection level can reach IP68, IP69K, and simple structure is small, and installation, easy maintenance use extensively, adopt the plastic part structure, strengthened anti vibration, shielding, the interference killing feature of product, adopt the earth connection mode, inside unnecessary electric charge of release circuit and interference, reinforcing product interference killing feature, through software optimization, have hysteresis function, window function and skew calibration function, adopt 7 sections charactrons to show, can set up positive reverse video through the button, make things convenient for field observation and control, simultaneously, this full metal temperature sensor of corrosion -resistant type still has multiple output mode and protect function, can carry out the measuring characteristics to liquid and gas.
Description
Technical field
The utility model relates to the temperature monitoring system field in instrument and meter industry, particularly relates to a kind of corrosion resistant type all-metal temperature sensor.
Background technology
Temperature sensor is used in temperature monitoring system, when temperature reaches the threshold values of setting, produces detection signal, for the protection of interlock protection system.Traditional conventional thermal-sensitive electric resistance device of temperature sensor great majority is as sensing element, and circuit is complicated, verification trouble, poor reliability, and error is large, precision is low, and cost is high; Have in the commercial Application of particular/special requirement at some, require that signal lag a period of time exports again, the length of time delay has different requirements, and traditional sensor then cannot meet these requirements.Temperature sensor in the market, great majority are based on overall embedding, and complex process, cost are high, maintenance is inconvenient, can ensure sealing and water proofing property, but cannot acid and alkali-resistance, corrosion, cannot use in high temperature and high pressure environment, application is limited; And product is impersonality in use operational design, display state and output instruction can only be observed from front, and the way of output is single, complex operation.
Utility model content
In order to solve the problems of the technologies described above, the utility model provides a kind of corrosion resistant type all-metal temperature sensor.
In order to achieve the above object, the technical solution of the utility model is as follows:
A kind of corrosion resistant type all-metal temperature sensor, comprises upper cover, housing and the probe all prepared with corrosion resistant metal, and circuit part, plastic parts for permanent circuit part; Described upper cover is sealedly attached to the upper and lower side of described housing respectively with probe, and the inside of three forms the cavity holding described circuit part and plastic parts; Described circuit part comprises: temperature detecting unit, external control unit outside, display unit, data processing unit; Detection signal is transferred to data processing unit by temperature detecting unit, and the data after process are exported to display unit and shown current output data and state by data processing unit; The input end of data processing unit connects described external control unit outside, is realized selection, the setting of study and menu function by the button operation of external control unit outside; Described upper lid surface becomes inclined-plane, be provided with display unit for showing current Temperature numerical and output state and be used for realizing study and the selection of menu function, the button of setting, described probe comprises probe and the attaching nut of hollow, one end of described probe is connected with housing interference seal, and with described attaching nut's fixing and locking, the other end stretch out and cavity empty wherein be built-in with temperature detecting unit, described temperature detecting unit adopts the digital integrated circuit chip based on PT1000 or LM73 temperature sensor.
Further, described data processing unit comprises: filtering circuit, display driver unit, single-chip microcomputer, D/A modular converter, analog output, output switch parameter, output protection unit; Detection signal is transferred to single-chip microcomputer by temperature detecting unit after filtering circuit process, single-chip microcomputer controls according to signal and button menu function, display driver unit is outputed signal to by serial communication, display driver element output signal, to display unit, shows current output data and state by charactron and output indicator; The output terminal connecting valve amount NPN of single-chip microcomputer and PNP export, then through output protection unit by signal feedback to single-chip microcomputer, single-chip microcomputer determines whether to export and normally outputs signal again; The output terminal of single-chip microcomputer is also exported by D/A converting unit connection mode analog quantity voltage and current signal; The input end of single-chip microcomputer is also connected with external control unit outside, is realized selection, the setting of study and menu function by button operation.
Further, described display driver unit is provided with displaying contents rotary module, and by pressing key control, the displaying contents on display unit can be revolved turnback by displaying contents rotary module, makes the display direction of displaying contents pros can put upside down exchange.
Further, described housing is right cylinder, and the outer wall of case top is provided with 2 draw-in grooves, above one place O-ring seal, below one place gasket seal, housing and upper cover are fixed by interference fit.
Further, described inner walls is provided with a circular hole, circular hole aperture≤1.5mm, and circular hole is used for ground wire, strengthens product antijamming capability.
Further, described plastic parts is semiellipse shape, is respectively provided with 4 bayonet sockets, is used for fixing circuit part in semielliptical inwall top and the bottom, and plastic parts plays antivibration, shielding, jamproof effect.
Further, a right cylinder is given prominence at described probe top, and cylindrical outer wall is provided with top draw-in groove and bottom draw-in groove 2 draw-in grooves, and top draw-in groove places O-ring seal, and bottom draw-in groove places gasket seal, and probe and housing are fixed by interference fit.
Further, the top draw-in groove of described probe by with attaching nut's clearance fit, then to fix with jump ring; Bottom draw-in groove is provided with O-ring seal, plays waterproof action.
Adopt the beneficial effect of the technical program: the utility model adopts noncorroding metal material to make, anticorrosion durable, reliability is high, antijamming capability is strong; Adopt interference fit not embedding structure, degree of protection can reach IP68, IP69K, and structure is simple, and volume is little, and installation, maintenance is convenient, is widely used; Adopt plastic parts structure, enhance the antivibration of product, shielding, antijamming capability; Adopt ground wire mode, the inner excess charge of release circuit and interference, strengthen product antijamming capability; By software optimization, there is hysteresis, window function and offset calibration function; Adopt 7 segment numeral pipe displays, forward and reverse display can be set by button, facilitate field observation and monitoring; Meanwhile, this corrosion resistant type all-metal temperature sensor also has the multiple way of output and defencive function, the feature can measured liquids and gases.
Accompanying drawing explanation
Fig. 1 is the explosive view of the utility model corrosion resistant type all-metal pressure transducer.
Fig. 2 is the theory diagram of the utility model corrosion resistant type all-metal pressure transducer.
Fig. 3 is the delayed output schematic diagram of embodiment of the utility model corrosion resistant type all-metal pressure transducer.
Fig. 4 is that the embodiment window of the utility model corrosion resistant type all-metal pressure transducer exports schematic diagram.
Fig. 5 a, Fig. 5 b-1 are the outside drawing of the utility model corrosion resistant type all-metal pressure transducer.
Fig. 5 b-2 is the schematic diagram of cable and probe.
Wherein: 1. upper cover 2. housing 3. 101. button 102. silica gel pads 103. of popping one's head in show cover 104. pressing sheet 105. display circuit 106. screw 201. circuit part 202. plastic parts 203. O-ring seal 204. gasket seal 205. connector 301. O-ring seal 302. gasket seal 303. temperature detecting unit 304. attaching nut 305. jump ring 306. O-ring seal 311. adapter 312. probe 313. cable.
Embodiment
Preferred implementation of the present utility model is described in detail below in conjunction with accompanying drawing.
A kind of corrosion resistant type all-metal temperature sensor, comprises upper cover, housing and the probe all prepared with corrosion resistant metal, and circuit part, plastic parts for permanent circuit part; Described upper cover is sealedly attached to the upper and lower side of described housing respectively with probe, and the inside of three forms the cavity holding described circuit part and plastic parts; Described circuit part comprises: temperature detecting unit, external control unit outside, display unit, data processing unit; Detection signal is transferred to data processing unit by temperature detecting unit, and the data after process are exported to display unit and shown current output data and state by data processing unit; The input end of data processing unit connects described external control unit outside, is realized selection, the setting of study and menu function by the button operation of external control unit outside; Described upper lid surface becomes inclined-plane, be provided with display unit for showing current Temperature numerical and output state and be used for realizing study and the selection of menu function, the button of setting, described probe comprises probe and the attaching nut of hollow, one end of described probe is connected with housing interference seal, and with described attaching nut's fixing and locking, the other end stretch out and cavity empty wherein be built-in with temperature detecting unit, described temperature detecting unit adopts the digital integrated circuit chip based on PT1000 or LM73 temperature sensor.
In actual applications, described data processing unit both can adopt traditional resolution element to build control circuit, also can adopt integrated circuit, generally comprise following circuit: filtering circuit, display driver unit, single-chip microcomputer, D/A modular converter, analog output, output switch parameter, output protection unit; Detection signal is transferred to single-chip microcomputer by temperature detecting unit after filtering circuit process, single-chip microcomputer controls according to signal and button menu function, display driver unit is outputed signal to by serial communication, display driver element output signal, to display unit, shows current output data and state by charactron and output indicator; The output terminal connecting valve amount NPN of single-chip microcomputer and PNP export, then through output protection unit by signal feedback to single-chip microcomputer, single-chip microcomputer determines whether to export and normally outputs signal again; The output terminal of single-chip microcomputer is also exported by D/A converting unit connection mode analog quantity voltage and current signal; The input end of single-chip microcomputer is also connected with external control unit outside, is realized selection, the setting of study and menu function by button operation.
Sometimes due to the relation of installation site, cause observation place and display direction reverse, be not easy to reading displayed data, therefore following optimization can be done, described display driver unit is provided with displaying contents rotary module, by pressing key control, the displaying contents on display unit can be revolved turnback by displaying contents rotary module, makes the display direction of displaying contents pros can put upside down exchange.
In order to reach the purpose of this utility model, in the utility model some embodiments wherein, as shown in Fig. 1 and Fig. 5 a, a kind of corrosion resistant type all-metal pressure transducer comprises housing 1, upper cover 2 and probe 3, the metal material of acid and alkali-resistance is all adopted to make, acid and alkali-resistance, corrosion-resistant, anti-interference.
The plastic parts 202 for the circuit part 201 and permanent circuit part controlling the work of corrosion resistant type all-metal temperature sensor is provided with in housing 2, plastic parts 202 is in semiellipse shape, 4 bayonet sockets are respectively provided with in semielliptical inwall top and the bottom, be used for fixing circuit part, plastic parts 202 plays antivibration, shielding, jamproof work; The outer wall at housing 2 top is provided with 2 draw-in grooves, above draw-in groove be used for placing O-ring seal 203, draw-in groove is below used for placing gasket seal 204, prevents extraneous foreign material from entering housing 2 by the gap between upper cover 1 and housing 2 inner, plays the effect of water proof and dust proof; Housing 2 and upper cover 1 are fixed by interference fit, are convenient to subsequent maintenance and maintenance; Housing 2 inwall is also provided with a circular hole, circular hole aperture≤1.5mm, and circular hole is used for ground wire, strengthens product antijamming capability.Meanwhile, housing 2 is also provided with a circular hole, circular hole is used for connector mounting 205, provides externally fed by connector 205 to circuit.
Upper cover 1 surface takes the form of inclined plane, and top is provided with the form of " convex " type, and bottom is provided with 2 buttons 101, simultaneously, upper cover 1 inside is also provided with display circuit 105, pressing sheet 104, display cover 103, silica gel pad 102, pressing sheet 104 front is provided with draw-in groove, reverse side is provided with stud, display cover 103 is stuck in draw-in groove through pressing sheet 104, silica gel pad 102 is placed on display cover 103 surface, mainly play the effect of waterproof, pressing sheet 104, display cover 103, silica gel pad 102 is fixed by welding in upper cover 1, display circuit 105 is fixed on pressing sheet 104 by screw 106, the display window of outstanding " convex " type in display cover 103 surface, the top of " convex " type display window is provided with 2 salient points, be used to refer to current output state, arranged by button 11 and can carry out forward and reverse existing display, facilitate field observation.
Probe 3 comprises probe and attaching nut 304, and probe is provided with 2 draw-in grooves, the draw-in groove on top by with is connected the female clearance fit of spiral shell 304, more fixing with jump ring 305; Bottom draw-in groove is provided with O-ring seal 306, plays waterproof action; A right cylinder is given prominence at probe top, and cylindrical outer wall is provided with 2 draw-in grooves, and top draw-in groove places O-ring seal 301, and bottom draw-in groove places gasket seal 302, and probe 3 and housing 2 are fixed by interference fit, and temperature detecting unit 303 is placed in probe.
As shown in Figure 2, a kind of corrosion resistant type all-metal temperature sensor Cleaning Principle of the utility model and functional characteristics as follows:
Circuit part is arranged in housing, comprising: temperature detecting unit, filtering, external control unit outside, display driver unit, display unit, single-chip microcomputer, D/A modular converter, analog output, output switch parameter, output protection unit.
Detection signal is transferred to single-chip microcomputer by temperature detecting unit after filtering circuit process, single-chip microcomputer controls according to signal and button menu function, display driver unit is outputed signal to by serial communication, display driver element output signal, to display unit, shows current output data and state by charactron and output indicator; The output terminal connecting valve amount NPN of single-chip microcomputer and PNP exports, again through output protection unit by signal feedback to single-chip microcomputer, output protection unit mainly realizes short-circuit protection, overload protection, reverse polarity protection, when there is short circuit, overload, reversed polarity phenomenon in output circuit, output unit is by signal feedback to single-chip microcomputer, and single-chip microcomputer determines whether to export and normally outputs signal again; The output terminal of single-chip microcomputer is also exported by D/A converting unit connection mode analog quantity voltage and current signal; The input end of single-chip microcomputer is also connected with external control unit outside, is realized selection, the setting of study and menu function by button operation.
Single-chip microcomputer, by software optimization, is provided with the mode confession user unrestricted choice of switching value NPN and PNP, any combination of two of analog quantity 0 ~ 10V and 4 ~ 20mA; Meanwhile, delayed output function, window output function and offset calibration function is also provided with.
Existing delayed output, as shown in Figure 3, if system temperature with preset similar, so hysteresis phenomenon remains on and exports stable state.When system temperature raises time, output terminal can reach the point (SP1) opening switch; When system temperature reduces again, output terminal can reach the point (rP1) of closing switch.The method of delayed adjustment is: the point first opening switch determines, and then difference as requested redefines again.
Window exports, as Fig. 4:
Clear and definite can being receivedly worth can be monitored by the effect of window.When system temperature open (SP1) and close change between (rP1) time, export and connect (window role/N0) or disconnect (window role/NC).Can be set the width of window by the difference of SP1 and rP1, SP1 is value above, and rP1 is value below.
The utility model adopts advanced digital temperature sensor to replace traditional thermal resistor temperature sensing device, so not only enormously simplify circuit design, also improves the precision of measurement simultaneously, also have the function of offset calibration, as table 1 simultaneously:
Table 1
The main button of the utility model external control unit outside controls, and the operation of button is as follows:
When pressing " pattern/carriage return " key very soon, device is the readable display mode of parameter value.Process and the output of device inside are still operational mode.
Often click " pattern/enter " button, just there will be a pad name, as shown in table 2 successively.
When pressing " set " button fast, corresponding parameter value shows 5 seconds, and after 5 seconds, device gets back to operational mode.
Table 2
Wherein first be classified as and arrange menu, second is classified as menu function annotation, and the 3rd is classified as optimum configurations scope, and the 4th annotation being classified as the scope of setting, remarks illustrate menu object.Form last column is that distance learning line is arranged, and it is only for the learning functionality of temperature, with " high point learns " in menu " low spot learns " function is identical, object is design temperature scope.This function setting facilitates user, execute-in-place.
In other embodiment, all the other technical characteristics are identical, and difference is, as shown in Fig. 5 b-1 and 5b-2, probe segment is split type, pop one's head in be made up of adapter 311, probe 312 and cable 313.Screw thread is set by housing lower end, mates with adapter and be threaded.Adapter 311 upper end protrudes right cylinder, and there are 2 symmetrical stubborn spanner draw-in grooves cylindrical side, and be convenient to subsequent installation, adapter 311 lower end is externally threaded, and externally threaded inside is provided with the connector be connected with cable; Cable 313 one end is connected with adapter, and the other end is fixed on probe 312, and probe 312 is provided with nut, for attached cable line.This split type structure is more suitable for remote measurement and monitoring, and cable employing is high-temperature shielding wires, and high temperature resistant, anti-shielding, can not affect the reliability and stability of product because of telemeasurement.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the utility model.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein when not departing from spirit or scope of the present utility model, can realize in other embodiments.Therefore, the utility model can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Above-described is only preferred implementation of the present utility model; it should be pointed out that for the person of ordinary skill of the art, under the prerequisite not departing from the utility model creation design; can also make some distortion and improvement, these all belong to protection domain of the present utility model.
Claims (8)
1. a corrosion resistant type all-metal temperature sensor, is characterized in that, comprises upper cover, housing and the probe all prepared with corrosion resistant metal, and circuit part, plastic parts for permanent circuit part; Described upper cover is sealedly attached to the upper and lower side of described housing respectively with probe, and the inside of three forms the cavity holding described circuit part and plastic parts; Described circuit part comprises: temperature detecting unit, external control unit outside, display unit, data processing unit; Detection signal is transferred to data processing unit by temperature detecting unit, and the data after process are exported to display unit and shown current output data and state by data processing unit; The input end of data processing unit connects described external control unit outside, is realized selection, the setting of study and menu function by the button operation of external control unit outside; Described upper lid surface becomes inclined-plane, be provided with display unit for showing current Temperature numerical and output state and be used for realizing study and the selection of menu function, the button of setting, described probe comprises probe and the attaching nut of hollow, one end of described probe is connected with housing interference seal, and with described attaching nut's fixing and locking, the other end stretch out and cavity empty wherein be built-in with temperature detecting unit, described temperature detecting unit adopts the digital integrated circuit chip based on PT1000 or LM73 temperature sensor.
2. corrosion resistant type all-metal temperature sensor according to claim 1, it is characterized in that, described data processing unit comprises: filtering circuit, display driver unit, single-chip microcomputer, D/A modular converter, analog output, output switch parameter, output protection unit; Detection signal is transferred to single-chip microcomputer by temperature detecting unit after filtering circuit process, single-chip microcomputer controls according to signal and button menu function, display driver unit is outputed signal to by serial communication, display driver element output signal, to display unit, shows current output data and state by charactron and output indicator; The output terminal connecting valve amount NPN of single-chip microcomputer and PNP export, then through output protection unit by signal feedback to single-chip microcomputer, single-chip microcomputer determines whether to export and normally outputs signal again; The output terminal of single-chip microcomputer is also exported by D/A converting unit connection mode analog quantity voltage and current signal; The input end of single-chip microcomputer is also connected with external control unit outside, is realized selection, the setting of study and menu function by button operation.
3. corrosion resistant type all-metal temperature sensor according to claim 1, it is characterized in that, described display driver unit is provided with displaying contents rotary module, by pressing key control, displaying contents on display unit can be revolved turnback by displaying contents rotary module, makes the display direction of displaying contents pros can put upside down exchange.
4. corrosion resistant type all-metal temperature sensor according to claim 1, it is characterized in that, described housing is right cylinder, the outer wall of case top is provided with 2 draw-in grooves, above one place O-ring seal, below one place gasket seal, housing and upper cover are fixed by interference fit.
5., according to the arbitrary described corrosion resistant type all-metal temperature sensor of claim 1 to 4, it is characterized in that, described inner walls is provided with a circular hole, circular hole aperture≤1.5mm, and circular hole is used for ground wire, strengthens product antijamming capability.
6. corrosion resistant type all-metal temperature sensor according to claim 1, it is characterized in that, described plastic parts is semiellipse shape, is respectively provided with 4 bayonet sockets in semielliptical inwall top and the bottom, be used for fixing circuit part, plastic parts plays antivibration, shielding, jamproof effect.
7. corrosion resistant type all-metal temperature sensor according to claim 1, it is characterized in that, a right cylinder is given prominence at described probe top, cylindrical outer wall is provided with top draw-in groove and bottom draw-in groove 2 draw-in grooves, top draw-in groove places O-ring seal, bottom draw-in groove places gasket seal, and probe and housing are fixed by interference fit.
8. corrosion resistant type all-metal temperature sensor according to claim 7, is characterized in that, the top draw-in groove of described probe by with attaching nut's clearance fit, then to fix with jump ring; Bottom draw-in groove is provided with O-ring seal, plays waterproof action.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520388222.5U CN204881898U (en) | 2015-06-08 | 2015-06-08 | Full metal temperature sensor of corrosion -resistant type |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105571731A (en) * | 2016-03-02 | 2016-05-11 | 伊玛精密电子（苏州）有限公司 | Anti-corrosion full metal temperature transmitter |
| CN105698983A (en) * | 2016-03-02 | 2016-06-22 | 伊玛精密电子（苏州）有限公司 | Corrosion-resisting all-metal pressure transmitter |
| CN106441606A (en) * | 2016-10-25 | 2017-02-22 | 伊玛精密电子（苏州）有限公司 | Hygiene-grade corrosion-resistant temperature sensor |
| CN106441469A (en) * | 2016-10-25 | 2017-02-22 | 伊玛精密电子（苏州）有限公司 | Hygienic corrosion-resistant intelligent sensor |
| CN106441462A (en) * | 2016-10-25 | 2017-02-22 | 伊玛精密电子（苏州）有限公司 | Hygiene-class flow sensor probe |
| CN106441603A (en) * | 2016-10-25 | 2017-02-22 | 伊玛精密电子（苏州）有限公司 | Hygiene grade sensor probe |
| CN107664553A (en) * | 2017-10-25 | 2018-02-06 | 伊玛精密电子（苏州）有限公司 | A kind of pressure and temp process circuit, the especially pressure thermometer with it |
| CN108827397A (en) * | 2018-08-27 | 2018-11-16 | 广州西博臣科技有限公司 | A kind of electromagnetism interference and erosion-resisting Temperature Humidity Sensor |
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2015
- 2015-06-08 CN CN201520388222.5U patent/CN204881898U/en active Active
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105571731A (en) * | 2016-03-02 | 2016-05-11 | 伊玛精密电子（苏州）有限公司 | Anti-corrosion full metal temperature transmitter |
| CN105698983A (en) * | 2016-03-02 | 2016-06-22 | 伊玛精密电子（苏州）有限公司 | Corrosion-resisting all-metal pressure transmitter |
| CN106441606A (en) * | 2016-10-25 | 2017-02-22 | 伊玛精密电子（苏州）有限公司 | Hygiene-grade corrosion-resistant temperature sensor |
| CN106441469A (en) * | 2016-10-25 | 2017-02-22 | 伊玛精密电子（苏州）有限公司 | Hygienic corrosion-resistant intelligent sensor |
| CN106441462A (en) * | 2016-10-25 | 2017-02-22 | 伊玛精密电子（苏州）有限公司 | Hygiene-class flow sensor probe |
| CN106441603A (en) * | 2016-10-25 | 2017-02-22 | 伊玛精密电子（苏州）有限公司 | Hygiene grade sensor probe |
| CN107664553A (en) * | 2017-10-25 | 2018-02-06 | 伊玛精密电子（苏州）有限公司 | A kind of pressure and temp process circuit, the especially pressure thermometer with it |
| WO2019080657A1 (en) * | 2017-10-25 | 2019-05-02 | 伊玛精密电子（苏州）有限公司 | Pressure and temperature processing circuit, in particular, pressure thermometer having same |
| CN108827397A (en) * | 2018-08-27 | 2018-11-16 | 广州西博臣科技有限公司 | A kind of electromagnetism interference and erosion-resisting Temperature Humidity Sensor |
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