EP3532434B1 - Lampensystem mit einer gasentladungslampe und dafür angepasstes betriebsverfahren - Google Patents

Lampensystem mit einer gasentladungslampe und dafür angepasstes betriebsverfahren Download PDF

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Publication number
EP3532434B1
EP3532434B1 EP17784957.7A EP17784957A EP3532434B1 EP 3532434 B1 EP3532434 B1 EP 3532434B1 EP 17784957 A EP17784957 A EP 17784957A EP 3532434 B1 EP3532434 B1 EP 3532434B1
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EP
European Patent Office
Prior art keywords
light intensity
control
gas discharge
discharge lamp
temperature
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EP17784957.7A
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German (de)
English (en)
French (fr)
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EP3532434A1 (de
Inventor
Jan Winderlich
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Heraeus Noblelight GmbH
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Heraeus Noblelight GmbH
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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/14—Circuit arrangements
    • H05B41/36—Controlling
    • H05B41/38—Controlling the intensity of light
    • H05B41/39—Controlling the intensity of light continuously
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/52—Cooling arrangements; Heating arrangements; Means for circulating gas or vapour within the discharge space
    • H01J61/523—Heating or cooling particular parts of the lamp
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/14—Circuit arrangements
    • H05B41/26—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc
    • H05B41/28—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters
    • H05B41/295—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters with semiconductor devices and specially adapted for lamps with preheating electrodes, e.g. for fluorescent lamps
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/12—Selection of substances for gas fillings; Specified operating pressure or temperature
    • H01J61/18—Selection of substances for gas fillings; Specified operating pressure or temperature having a metallic vapour as the principal constituent
    • H01J61/20—Selection of substances for gas fillings; Specified operating pressure or temperature having a metallic vapour as the principal constituent mercury vapour

Definitions

  • the present invention relates to a method for operating a lamp system, with a gas discharge lamp, an electronic ballast and with a control unit for regulating a power-influencing controlled variable of the lamp system.
  • the present invention relates to a lamp system for carrying out the method, having a gas discharge lamp, an electronic ballast and a control unit for regulating a power-influencing controlled variable of the lamp system.
  • Gas discharge lamps are mercury vapor lamps, fluorescent lamps or sodium vapor lamps.
  • the emission power of mercury-containing UV discharge lamps shows a maximum at a specific mercury partial pressure. There is therefore an optimal operating temperature at which the emission performance of the gas discharge lamp is at its maximum.
  • an equilibrium is formed between the mercury bound in the amalgam and the free mercury, which also depends on the operating temperature of the gas discharge lamp, in particular on the temperature of the amalgam depot , depends.
  • the electrical connected load of the gas discharge lamp is designed for the highest possible emission power in continuous operation, taking into account the ambient conditions.
  • the operating temperature that actually occurs during use often differs from the projected temperature. For example, overheating due to high ambient air temperature or insufficient ventilation lead to a deviation from the operating optimum. Lamp aging can also lead to changes in emissions.
  • Temperature control of the amalgam depot was proposed in order to ensure a maximum emission output that is independent of the ambient conditions.
  • a temperature sensor is arranged in the area of the amalgam depot, and depending on the determined temperature, the amalgam depot is heated by means of an adjustable heater.
  • the surface temperature of the lamp bulb is measured by a temperature sensor and at the same time the UV radiation emission is measured by a UV sensor.
  • the lamp be cooled or heated via a blower unit depending on the temperature determined.
  • the GB 2 316 246 A describes a dimmable fluorescent lamp that is equipped with an independent heating circuit for lamp heating that can be controlled separately from the actual power current.
  • the power requirement for the electrode heating is detected with a temperature sensor.
  • DE 10 2008 044 294 A1 relates to a mercury vapor lamp, a method for sterilizing liquids and a liquid sterilizing device.
  • U.S. 2008/0156738 A1 describes a control system for a UV treatment system for fluids such as water.
  • WO 2007/025376 A2 relates to a fluid treatment system with a UV lamp.
  • U.S. 2013/0309131 A1 relates to a lamp system for dynamic temperature compensation.
  • DE 10 2010 014 040 A1 relates to a method for operating an amalgam lamp with a heatable amalgam depot with a nominal output having a discharge chamber containing a filling gas, in which a lamp voltage designed for a maximum UVC emission is present between electrodes or a lamp current designed for a maximum UVC emission flows.
  • the nominal lamp current is applied when the UV lamp is switched on and is generally kept almost constant during operation of the UV lamp.
  • Changing operating conditions of the UV lamp, in particular the temperature lead to undesirable changes in the emission power.
  • a certain prior knowledge of the type of radiator is required, for example to adapt a temperature control circuit. Changes occurring as a result of lamp aging, which would require an adjustment of the electrical connected load, are also not taken into account.
  • the invention is therefore based on the object of specifying a method for operating a gas discharge lamp that enables operation with high emission power regardless of its design and any changes resulting from lamp aging, especially when the optimal operating temperature is not known.
  • the invention is based on the object of providing a lamp system which can be operated with a high emission power even under changing operating conditions and any changes resulting from lamp aging.
  • the object is achieved by a lamp system according to claim 9 and a method according to claim 1.
  • Gas discharge lamps are usually operated with power control, sometimes also with current control, with the connection power or the connection current being designed for an optimum concentration of the charge carrier in the discharge space or an optimum temperature and thus maximum light intensity. Accordingly, with conventional lamp systems, deviations the ambient temperature and associated changes in the operating temperature of the gas discharge lamp by adjusting operating parameters such as current, voltage or temperature of an amalgam depot.
  • the light intensity of the gas discharge lamp forms the power-influencing desired value of the regulation.
  • the emitted light intensity is therefore not only measured, as is also usual, but is also regulated to a maximum or a predetermined threshold value, which is lower than the actual maximum value of the emission, using a control value of the lamp control that affects the light intensity.
  • the light intensity in particular the emitted UV power, always remains in the range of the target value, i.e. the maximum or the specified threshold value, regardless of the ambient conditions and even when neither the current operating temperature nor an optimal operating temperature are known.
  • the maximum light intensity can be generally specified for a lamp type and then may not have to be determined for each individual gas discharge lamp.
  • the maximum light intensity for each gas discharge lamp is individually determined at the factory.
  • the individually determined desired value is stored in a memory unit of the lamp system, which is read out by the control unit when the gas discharge lamp is switched on.
  • the current maximum of the light intensity when the gas discharge lamp is switched on is not known and is determined individually when the gas discharge lamp is switched on. If necessary, this individual determination takes place each time the lamp is switched on or in predetermined switch-on cycles and/or operating times.
  • the operating method according to the invention is preferably used in a gas discharge lamp which emits UV radiation.
  • the spectral range for ultraviolet radiation that is relevant for gas discharge lamps extends between 184 nm, with a focus on 254 nm and up to 380 nm preferably the intensity of UV radiation emitted by the gas discharge lamp, which includes radiation with a wavelength of 254 nm.
  • the emission spectrum of mercury vapor discharge lamps shows a characteristic and pronounced line at 254 nm (UVC radiation), which is very well suited for regulation.
  • Control technology knows a number of methods for finding a maximum of a controlled variable and subsequent control to this found maximum under the keyword "extreme value control”.
  • the extreme value control includes finding the maximum value of the light intensity, and as a result of this, a target value for the control variable, ie for the light intensity, is transferred to the control unit.
  • This target value remains constant during the subsequent operating phase or it is redefined continuously, from time to time or as required.
  • this is designed as a two-point control, in which the manipulated variable is set to at least two initial values during a starting phase, one of which causes a temperature increase and the other of which causes a temperature decrease in the gas discharge lamp, with both as a result the temperature increase and as a result of the temperature decrease, a maximum of the light intensity is reached and exceeded, and that a value between the one and the other output value is set as the target value of the manipulated variable.
  • the two-point control is based on the fact that the controlled variable, in this case the light intensity, has a relative maximum as a function of the manipulated variable.
  • the controlled variable in this case the light intensity
  • the temperature of the amalgam depot can in turn depend on another parameter, such as the cooling or heating capacity of a temperature control element acting on the amalgam depot. This type of dependence of the light intensity on a manipulated variable with a pronounced maximum is shown schematically in Figure 3a shown.
  • the two-point control used here is particularly suitable for use with comparatively sluggish control systems, as is the case with the light intensity of the gas discharge lamp.
  • this includes a determination of the curvature of a transfer function of the manipulated variable and the light intensity, with the target value being determined using the maximum of the light intensity.
  • This type of control is also based on the fact that the light intensity has a relative maximum as a function of the manipulated variable.
  • This embodiment of the extreme value determination is particularly well suited for control, since once the optimum has been reached, the manipulated variable no longer changes under constant ambient conditions (in contrast to 2-point control and classic "Extremum Seeking Control" algorithms).
  • the control based on the determination of the curvature does not require any complex determination of the maximum of the light intensity and enables a continuous control without steps. It manages with comparatively few control interventions, which has a favorable effect on the service life of the actuator supplying the manipulated variable, such as a fan, and it is therefore less acoustically noticeable than other controls.
  • this control method has also proven to be particularly suitable for use in the comparatively sluggish control system such as here.
  • a deviation of the light intensity from a previously determined maximum can indicate a change in the surroundings of the gas discharge lamp, in particular a temperature change affecting the light intensity; such as the temperature of an amalgam depot. It makes sense to use the temperature in question or a changeable parameter that is mathematically clearly correlated with the temperature as the manipulated variable for the light intensity control.
  • a particularly preferred variant of the method is characterized in that an operating temperature of the gas discharge lamp that influences the light intensity can be changed by means of a temperature control element with controllable temperature control power, and that the temperature control power is used as a control variable for the control.
  • Temperature control is achieved by using a gaseous, liquid or solid temperature control medium.
  • the temperature control element is designed, for example, as a Peltier element or as an array of several Peltier elements.
  • the operating temperature is, for example, a characteristic temperature in the area of the surface of the gas discharge lamp or the temperature of an amalgam depot.
  • the temperature control includes increasing, reducing and maintaining this temperature by means of the temperature control element.
  • the fan With fan control using PWM (pulse width modulation), the fan has its own control chip. In contrast to fan control with variable voltage, with PWM fan control there is no start-up voltage below which the fan rotor stops rotating. This allows the speed to be regulated down to very low values. In addition, PWM control eliminates the problem of waste heat caused by the variable resistor in voltage control.
  • the temperature control output as a control variable is the ventilation output, which can be specified, for example, in revolutions of the fan rotor per unit of time or as a mass or volume flow of a gaseous temperature control medium. Cooling and heating processes, such as the temperature control of the gas discharge lamp here, basically cause a sluggish control system, for which continuous control via PWM has proven to be particularly advantageous.
  • control unit for setting the operating temperature sends a control signal that regulates the cooling capacity to the temperature control element.
  • the light intensity measured as a controlled variable can relate to the emission of a specific wavelength and/or to that of a wavelength range.
  • a variant of the method has proven particularly useful, in which the intensity of UV radiation emitted by the gas discharge lamp, which includes radiation with a wavelength of 254 nm, is used as the light intensity.
  • a threshold value for the light intensity is specified, falling below which marks the end of the service life of the gas discharge lamp, this threshold value being used as the desired value for the light intensity control
  • a drop to, for example, 50% to 90% of the initial power can be defined as the end of the lamp life.
  • a gas discharge lamp can be operated with a constant UV output in accordance with the specified threshold value over its entire service life. This procedure is referred to below as "lifetime compensation".
  • the target value UV duration of the light intensity is set to a lower threshold value, which marks the end of the lamp's service life, for example to a value in the range from 50 to 90% of the initial, maximum light intensity.
  • operating parameters that affect the light intensity such as supply voltage, current or power or the temperature of an amalgam depot, are set in standard operation in such a way that the light intensity is reduced compared to the maximum possible light intensity UV max sets UV duration at a lower, relative maximum intensity.
  • the light intensity is regulated to this lower maximum UV duration , whereby the extreme value regulation explained above according to the invention can be used for this.
  • the intentionally reduced, lower, relative maximum UV duration of the light intensity takes the place of the absolute maximum UVmax of the light intensity as a target value.
  • the operating parameters that affect the light intensity such as supply voltage, current or power or the temperature of an amalgam depot, are optimally set in standard operation, so that theoretically the maximum possible light intensity UVmax is generated could.
  • the threshold value of the light intensity as the target value for the temperature control is not set to the maximum light intensity UV max but, for example, to a value which is 10 to 50 percentage points below this maximum value.
  • the initial maximum and/or the initial target value is stored in a memory of the lamp system and read out from the memory when the gas discharge lamp is switched on.
  • the above-mentioned object is achieved, based on a lamp system of the type mentioned at the outset, according to the invention in that there is a light sensor for determining an actual value of a light intensity emitted by the gas discharge lamp, and the control is designed as a light intensity control in which the emitted light intensity is used as a controlled variable, the actual value of the light intensity being present as an input signal at a signal input of the control unit.
  • the light intensity of the gas discharge lamp is the power-influencing setpoint of the regulation.
  • a sensor is provided for measuring the emitted light intensity, preferably the UV intensity in a gas discharge lamp emitting UV radiation.
  • the sensor preferably a UV sensor, is part of the gas discharge lamp or it is positioned in the emission area of the gas discharge lamp, for example in a base or a frame or a housing of the lamp system.
  • the UV sensor is designed in such a way that it detects the emission of a specific wavelength and/or the emission of a wavelength range, preferably UV radiation emitted by the gas discharge lamp, which includes radiation of the wavelength of 254 nm.
  • the control is designed for extreme value control. It is suitable for regulating the light intensity to a maximum or a predetermined threshold value. As a result, the light intensity, in particular the emitted UV power, always remains in the range of the desired value, i.e. the maximum or the specified threshold value, regardless of the ambient conditions.
  • the maximum light intensity can be generally specified for a lamp type, it can be determined individually for each gas discharge lamp at the factory, or it is read out by the control unit when the gas discharge lamp is switched on.
  • control unit comprises a device for controlling extreme values, in which a target value is determined for a manipulated variable at which the light intensity assumes a maximum or a predetermined threshold value.
  • the extreme value control is preferably implemented as a two-point control or as a determination of the curvature of a transfer function of the manipulated variable and the light intensity.
  • the relevant explanations for the method according to the invention also apply to the lamp system.
  • the temperature of an amalgam depot of the gas discharge lamp is preferably used as the manipulated variable.
  • the lamp system is preferably equipped with a temperature control element with controllable temperature control output, which is suitable for changing an operating temperature of the gas discharge lamp that influences the light intensity, the operating temperature or a parameter correlated with the operating temperature being present at a signal input of the control unit and being usable as a manipulated variable for the light intensity control .
  • the temperature control element works with a gaseous, liquid or solid temperature control medium.
  • the temperature control element is designed, for example, as a Peltier element or as an array of several Peltier elements.
  • the operating temperature is, for example, a characteristic temperature in the area of the surface of the gas discharge lamp or the temperature of an amalgam depot.
  • the temperature control includes increasing, reducing and maintaining this temperature by means of the temperature control element.
  • a temperature control element with controllable cooling or heating power in particular a fan with PWM-controlled ventilation power, which is connected to the control unit, has proven particularly useful.
  • FIG. 12 shows a lamp system for the generation of ultraviolet radiation, which is assigned the reference numeral 10 as a whole.
  • the lamp system comprises a low-pressure amalgam lamp 11, an electronic ballast 14 for the low-pressure amalgam lamp 11, a radial fan 15 for cooling the low-pressure amalgam lamp 11 and a control unit 16 for the radial fan 15.
  • the low-pressure amalgam radiator 11 is operated with a substantially constant lamp current with a nominal power of 200 W (at a nominal lamp current of 4.0 A). It has a light length of 50 cm, an outside diameter of 28 mm and a power density of about 4 W/cm.
  • At least one amalgam depot 13 is located in the discharge space 12 at a gold point of the envelope bulb.
  • the envelope of the low-pressure amalgam radiator 11 is closed at both ends with pinches 17 through which a power supply 18 is guided and which are held in sockets 23 .
  • a memory element 22 in the form of an EEPROM is arranged in one of the sockets 23 .
  • the separate memory chip in the base the gas discharge lamp is dispensed with and the required data is stored in the central control unit 16 .
  • a UV sensor 24 is arranged in the vicinity of one end of the envelope bulb. It is a commercially available photodiode made of silicon carbide (SiC), which is characterized by its insensitivity to daylight and its long-term stability. It detects UVC radiation including the wavelength of 254 nm, a main emission line of the low-pressure amalgam lamp 11.
  • the UV sensor 24 is connected to the control unit 16 via a data line 25. During operation, the control unit 16 determines the UVC light intensity measured by the UV sensor 24 as the actual value UV Ist . the light intensity control.
  • the low-pressure amalgam radiator 11 is operated on the electronic ballast 14 and is connected to it via the connection lines 20 .
  • the electronic ballast 14 also has a mains voltage connection 19 .
  • the radial fan 15 has a PWM signal (pulse width modulation) for controlling the speed of the rotor.
  • the speed determines its cooling capacity, which can be set between 0 and 200 m 3 /h by means of a cooling air volume flow.
  • the light intensity serves as a variable reference value and the cooling capacity of the radial fan 15 forms the control value for the lamp control.
  • the light intensity is regulated to a maximum or to a predetermined threshold value which is lower than the actual maximum value of the emission.
  • the light intensity always remains in the range of the target value, i.e. the maximum or the specified threshold value, regardless of the ambient conditions. Operating and control processes are explained in more detail below using three methods.
  • the chart of figure 2 illustrates a procedure for determining the target value of the light intensity using a two-point control as an example. It shows the course over time of measured light intensity (curve A), cooling capacity (curve B; measured as PWM) and temperature of the amalgam depot 13 (curve C; measured using an IR sensor). On the left ordinate is that measured by the UV sensor Light intensity UV is plotted in mW/cm 2 , and the cooling air volume flow PWM is plotted in m 3 /h on the right-hand ordinate. In the case of the temperature profile (curve C) also entered in the diagram, the temperatures are not specially scaled relative values. The unit of the time axis t is seconds (s).
  • the fan 15 (curve B) initially remains switched off.
  • the UV light intensity (curve A) increases rapidly, reaches a maximum and then decreases.
  • the drop in the UV light intensity can be attributed to an excessively high temperature of the envelope of the lamp and of the amalgam depot 13 (curve C).
  • the fan 15 is then operated at maximum speed (fan max) until the lamp bulb (more precisely: the temperature of the amalgam depot 13) has subcooled and the UV light intensity therefore drops again.
  • the duration of this time segment is tmax.
  • the fan 15 is operated at a low speed (fan min ) for a duration tmin (so that it just turns) until the gas discharge lamp overheats again and the UV light intensity drops again.
  • the result of this starting phase is an initial value for the standard speed of the fan 15, as is used as a measure of the cooling capacity in the further operation of the gas discharge lamp.
  • the UV light intensity that occurs with the standard fan cooling capacity represents the target value UV target for the lamp control; it also represents the maximum value. If the UV light intensity falls below a critical threshold during operation (e.g. 98% of the maximum value), the fan is switched to minimum operation (fan min ) and a check is made during a reaction time t crit to see whether the UV light intensity increases again. If necessary, the value for standard fan is reduced. Otherwise the fan is operated at maximum fan max and the standard test direction is changed (from fan min to fan max ).
  • a critical threshold during operation e.g. 98% of the maximum value
  • the time constant, t crit can be determined by a simple step function test, even automatically from the response time of the UV light intensity after the fan is first switched on.
  • FIG. 3 Another procedure for determining the set point of light intensity and operation of the lamp system is illustrated figure 3 using the example of a curvature determination with a transfer function of the manipulated variable and the light intensity.
  • the chart of Figure 3a outlines the dependency of the UV light intensity UV on the PWM cooling capacity (e.g. the fan speed).
  • the UV light intensity shows a pronounced maximum with optimal cooling performance. Since the transfer function ( Figure 3a ) is not monotonous, it is not possible to deduce the correct control direction when the light intensity changes.
  • figure 4 demonstrated using the temporal progression of UV light intensity (curve D) and the associated cooling capacity (fan speed or cooling air volume flow; curve E).
  • the light intensity UV relative (in %) as a relative value based on the maximum light intensity is plotted on the left ordinate and the cooling air volume flow PWM in m 3 /h on the right ordinate.
  • This continuous control by means of a PWM-controlled radial fan 15 generates a largely constant UV light intensity, as curve D shows, despite the inertia of the control system, which results from the temperature control of the gas discharge lamp as a manipulated variable.
  • this UV control via the curvature determination can become unstable and the fan can be changed in the wrong direction.
  • This case is intercepted by the control system as soon as the UV light intensity falls below a critical threshold during operation (e.g. 95% of the maximum value; UV ⁇ 95% of UV max ).
  • the fan speed is then specifically disturbed, i.e. the speed is drastically changed; for example to zero at a previous PWM value of 50% or more, or to maximum PWM value (100%) at a previous PWM value of less than 50% in order to generate a clear control signal.
  • This disturbance is then not permitted for x time steps in order to give the control time to adjust.
  • Another method of operating and controlling the lamp system relies on an absolute measurement of the UV light intensity to a predetermined value (rather than controlling to the relative maximum UV light intensity as described in the two procedures above).
  • UV output drops to, for example, 90% of the initial output over the lifetime of the lamp.
  • a gas discharge lamp can be operated with constant UV output over its entire service life.
  • the control keeps bringing the fan setting to the relative maximum in order to maintain this target value.
  • This process variant with an operating parameter (lamp current) adapted to the UV duration is in Figure 3a indicated by the dashed curve V1 with the relative maximum UV duration of the light intensity.
  • control unit 16 compares the actual value of the UV light intensity transmitted by the UV light sensor 24 with the target value UV Duration , determines the deviation of the actual value from the target value and outputs a control signal that controls the cooling capacity of the radial fan 15 rules.
  • the reduction of the light intensity to UV duration is achieved here by an intentionally unoptimized fan performance, an adjustment of the operating parameters is not necessary for this.
  • the fan output is set in such a way that a temperature is set at the amalgam depot 13 that is lower than the temperature required to reach the absolute maximum. This process variant without adjustment of the operating parameters is in Figure 3a indicated by the control point V2.

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  • Discharge Lamps And Accessories Thereof (AREA)
  • Discharge-Lamp Control Circuits And Pulse- Feed Circuits (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
EP17784957.7A 2016-10-28 2017-10-18 Lampensystem mit einer gasentladungslampe und dafür angepasstes betriebsverfahren Active EP3532434B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016120672.5A DE102016120672B4 (de) 2016-10-28 2016-10-28 Lampensystem mit einer Gasentladungslampe und dafür angepasstes Betriebsverfahren
PCT/EP2017/076529 WO2018077678A1 (de) 2016-10-28 2017-10-18 Lampensystem mit einer gasentladungslampe und dafür angepasstes betriebsverfahren

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EP3532434A1 EP3532434A1 (de) 2019-09-04
EP3532434B1 true EP3532434B1 (de) 2022-06-15

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US (1) US10652975B2 (zh)
EP (1) EP3532434B1 (zh)
JP (1) JP6828153B2 (zh)
KR (1) KR102241690B1 (zh)
CN (1) CN109923073B (zh)
DE (1) DE102016120672B4 (zh)
WO (1) WO2018077678A1 (zh)

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WO2020217475A1 (ja) * 2019-04-26 2020-10-29 株式会社島津製作所 クロマトグラフ用検出器
DE102019135736A1 (de) * 2019-12-23 2021-06-24 Prominent Gmbh Verfahren zum Überwachen des Dampfdruckes in einer Metalldampflampe

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DE102016120672A1 (de) 2018-05-03
KR102241690B1 (ko) 2021-04-19
JP2020501297A (ja) 2020-01-16
DE102016120672B4 (de) 2018-07-19
CN109923073A (zh) 2019-06-21
KR20190051047A (ko) 2019-05-14
EP3532434A1 (de) 2019-09-04
JP6828153B2 (ja) 2021-02-10
WO2018077678A1 (de) 2018-05-03
US10652975B2 (en) 2020-05-12
US20190254151A1 (en) 2019-08-15
CN109923073B (zh) 2022-04-08

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