Sensor for Humidity and Temperature with hx Processor PM

Transcription

1 Galltec Mess- und Regeltechnik GmbH MELA Sensortechnik GmbH D Bondorf. Germany D Mohlsdorf (Thüringen). Germany Tel. +49 (0) Fax +49 (0) Tel. +49(0) Fax +49(0) Internet: Internet: PM100V PM80V PMV Sensor for Humidity and Temperature with hx Processor PM probe made of stainless steel digital, exchangeable "Plug-and-Measure Unit" PMU-V with outputs VDC, 0...1VDC, 0(4)...20mA for direct output of various physical values Digital Head PMU-V Humidity measuring range %rh measuring accuracy %rh at 23 C... ±1.5%rh 1) at <10%rh >90%rh... ±2%rh at <10 C >40 C... ±0.05%rh/K additional resolution %rh (read out) response time at v=2m/s... < 10 s Description of the Sensor The sensor PM.. with integrated hx-processor measures humidity by means of a humidity-dependant condenser. The capacitive Mela humidity measuring element, produced using thinfilm technology, consists of a base plate, on which the electrodes are housed and a hygroscopic polymer layer above it. The hygroscopic polymer layer absorbs water molecules from the medium to be measured (air) or releases them, thereby altering the capacity of the condenser. The humidity or temperature values measured are calculated in the exchangeable "PMU-V measuring head, with the calibration values stored there, and communicated on to the following electronic transmitter components as calibrated digital measuring values. The PMU-V is calibrated and thus enables a replacement within seconds. Replaced measuring heads can be recalibrated in the factory. The transmitter with the hx processor uses the values of the relative humidity and the temperature to calculate the dew point temperature, the enthalpy, the water content, the absolute humidity or the wet-bulb temperature, in accordance with the laws of physics. The values are emitted at two analogue outputs with the standardised signals 0.10VDC or 0.1VDC or 0.20mA or 4.20mA. The outputs can be configured differently and are defined using the software. Further measuring ranges on request. The Mela measuring element is protected by a filter and a basket guard. The sensors are designed for unpressurised systems, the measurement medium is non-aggressive air. 1) Ex works. Depending on the specific range of application a regular recalibration of the sensor head (PMU-V) has to be effected. Higher accuracies on request. 2) The accuracy of the calculated values depends on both the operating point in accordance with the hx diagram and on the primary values measured. 3) See load diagram Temperature measuring range C measuring accuracy... ±0. 23 C measuring element... (Pt1000 1/3DIN) resolution C (readout) ambient temperature C protective system... IP30 measuring medium... air, pressureless, non-aggressive, non-condence output... ASCII (Galltec-Protocol) housing... stainless steel Transmitter with hx Processor PMO...V physical outputs There are respectively 2 physical values available at the output dew point temperature C 2) enthalpy kj/kg 2) water content g/kg dry air 2) absolute humidity g/m³ or g/m³ 2) wet-bulb temperature C 2) relative humidity %rh temperature C; C; C electrical outputs voltage... 2x VDC, or 2x 0...1VDC or current (only PM80V and PM100V)... 0(4)...20mA 4-wire linearity tolerance... <0.25% power supply V V DC V V DC... 0(4)...20mA V DC 3) electromagnetic compatibility... ref. EN A1+A2 min. load resistance for voltage output kohm consumption of electronics... <10 ma load for current output... acc. diagram permissible ambient temperature C at the housing C max. air speed... m/s minimum air speed across the measuring head for output: housing 2 x V, 0(4)...20mA... 1 m/s 1 x V, 2 x 0...1V... 0,5 m/s PMO100V... ABS light grey PMO80V... aluminium die-casting,varnished PMOV... stainless steel protective system... IP64 probe material... stainless steel mounting position... optional contacting... connecting terminals 1.5mm 2 in the housing PMV length of connection cable m "subject to technical modifications" This information is based on current knowledge and is intended to provide details of our products and their possible applications. It does not, therefore, act as a guarantee of specific properties of the products described or of their suitability for a particular application. It is our experience that the equipment may be used across a broad spectrum of applications under the most varied conditions and loads. We cannot appraise every individual case. Purchasers and/or users are responsible for checking the equipment for suitability for any particular application. Any existing industrial rights of predection must be observed. The perhect quality of our products is guaranteed under our General Conditions of Sale. Issue : May 2006 valid until PM-VE. Subject to modifications, current version available at This issue supersedes all previous technical leaflets.

2 Humidity-Temperature Sensor PMVS (level converter) PM-VE page 2 Humidity measuring range %rh measuring accuracy %rh at 23 C... ±1.5%rh 1) at <10%rh >90%rh... ±2%rh at <10 C >40 C... ±0.05%rh/K additional resolution %rh (read out) response time T 90 at v=2m/s... < 10 s PMVS for humidity and temperature order no Temperature measuring range C measuring accuracy... ±0. K (Pt1000 1/3DIN) resolution... 0,01 C (readout) ambient temperature C protective system measuring head... IP30 measuring medium... air, pressureless, non-aggressive output... RS232 lead SUB-D 9pin (female) m Type Survey Type Order No. (PM-key) value 1 value 2 PMU-V relative humidity %rh ASCII temperature C ASCII "plug-and-measure unit" (digital) ( C) (digital) PMV relative humidity %hr VDC temperature C VDC cable version relative humidity %rh VDC temperature C VDC relative humidity %rh VDC temperature C VDC VDC dew point temperature C VDC temperature C VDC enthalpy kJ/kg VDC temperature C VDC water content g/kg dry air VDC temperature C VDC absolute humidity g/m³ VDC temperature C VDC absolute humidity g/m³ VDC temperature C VDC wet-bulb temperature C VDC temperature C VDC PMV relative humidity %rh 0...1VDC temperature C 0...1VDC cable version relative humidity %rh 0...1VDC temperature C 0...1VDC relative humidity %rh 0...1VDC temperature C 0...1VDC 0...1VDC dew point temperature C 0...1VDC temperature C 0...1VDC enthalpy kJ/kg 0...1VDC temperature C 0...1VDC water content g/kg dry air 0...1VDC temperature C 0...1VDC absolute humidity g/m³ 0...1VDC temperature C 0...1VDC absolute humidity g/m³ 0...1VDC temperature C 0...1VDC wet-bulb temperature C 0...1VDC temperature C 0...1VDC PMVS relative humidity %rh RS232 temperature C RS232

3 PM-VE page 3 Type Order No. value 1 value 2 PMU-V relative humidity %rh ASCII temperature C ASCII "plug-and-measure unit" (digital) ( C) (digital) PM80V relative humidity %rh VDC temperature C VDC alu housing relative humidity %rh VDC temperature C VDC relative humidity %rh VDC temperature C VDC VDC dew point temperature C VDC temperature C VDC enthalpy kJ/kg VDC temperature C VDC water content g/kg dry air VDC temperature C VDC absolute humidity g/m³ VDC temperature C VDC absolute humidity g/m³ VDC temperature C VDC wet-bulb temperature C VDC temperature C VDC PM80V relative humidity %rh 0...1VDC temperature C 0...1VDC alu housing relative humidity %rh 0...1VDC temperature C 0...1VDC relative humidity %rh 0...1VDC temperature C 0...1VDC dew point temperature C 0...1VDC temperature C 0...1VDC 0...1VDC enthalpy kJ/kg 0...1VDC temperature C 0...1VDC water content g/kg dry air 0...1VDC temperature C 0...1VDC absolute humidity g/m³ 0...1VDC temperature C 0...1VDC absolute humidity g/m³ 0...1VDC temperature C 0...1VDC wet-bulb temperature C 0...1VDC temperature C 0...1VDC PM100V relative humidity %rh VDC temperature C VDC ABS housing relative humidity %rh VDC temperature C VDC relative humidity %rh VDC temperature C VDC dew point temperature C VDC temperature C VDC enthalpy kJ/kg VDC temperature C VDC VDC water content g/kg dry air VDC temperature C VDC absolute humidity g/m³ VDC temperature C VDC absolute humidity g/m³ VDC temperature C VDC wet-bulb temperature C VDC temperature C VDC PM100V relative humidity %rh 0...1VDC temperature C 0...1VDC ABS housing relative humidity %rh 0...1VDC temperature C 0...1VDC relative humidity %rh 0...1VDC temperature C 0...1VDC dew point temperature C 0...1VDC temperature C 0...1VDC 0...1VDC enthalpy kJ/kg 0...1VDC temperature C 0...1VDC water content g/kg dry air 0...1VDC temperature C 0...1VDC absolute humidity g/m³ 0...1VDC temperature C 0...1VDC absolute humidity g/m³ 0...1VDC temperature C 0...1VDC wet-bulb temperature C 0...1VDC temperature C 0...1VDC

4 PM-VE page 4 Type Order No. value 1 value 2 PMU-V relative humidity %rh ASCII temperature C ASCII "plug-and-measure unit" (digital) ( C) (digital) PM80V relative humidity %rh mA temperature C mA alu housing relative humidity %rh mA temperature C mA relative humidity %rh mA temperature C mA mA 4-wire dew point temperature C mA temperature C mA enthalpy kJ/kg mA temperature C mA water content g/kg dry air mA temperature C mA absolute humidity g/m³ mA temperature C mA absolute humidity g/m³ mA temperature C mA wet-bulb temperature C mA temperature C mA PM80V relative humidity %rh mA temperature C mA alu housing relative humidity %rh mA temperature C mA relative humidity %rh mA temperature C mA mA 4-wire dew point temperature C mA temperature C mA enthalpy kJ/kg mA temperature C mA water content g/kg dry air mA temperature C mA absolute humidity g/m³ mA temperature C mA absolute humidity g/m³ mA temperature C mA wet-bulb temperature C mA temperature C mA PM100V relative humidity %rh mA temperature C mA ABS housing relative humidity %rh mA temperature C mA relative humidity %rh mA temperature C mA mA 4-wire dew point temperature C mA temperature C mA enthalpy kJ/kg mA temperature C mA water content g/kg dry air mA temperature C mA absolute humidity g/m³ mA temperature C mA absolute humidity g/m³ mA temperature C mA wet-bulb temperature C mA temperature C mA PM100V relative humidity %rh mA temperature C mA ABS housing relative humidity %rh mA temperature C mA relative humidity %rh mA temperature C mA mA 4-wire dew point temperature C mA temperature C mA enthalpy kJ/kg mA temperature C mA water content g/kg dry air mA temperature C mA absolute humidity g/m³ mA temperature C mA absolute humidity g/m³ mA temperature C mA wet-bulb temperature C mA temperature C mA

5 PM-VE page 5 Accuracy of humidity in %rh 23 C Load for 0(4)...20mA current version 1200 Humidity %rh (type.) +2,0 +1,5 +1,0 +0,5 0-0,5-1,0-1, value of humidity %rh Load in Ohm , Calibration values (humidity generator) Supply in V DC Connection diagrams Connection diagram PM80V, PM100V Connection diagram PMVS for RS232 Voltage output VDC or 0...1VDC negative poles are bridged POW. - POW. + OUT - %rh OUT + OUT - C OUT + PE Current output mA or mA (4-wire) Connection diagram PM80VS, PM100VS for RS232 positive poles are bridged POW. - POW. + OUT + %rh OUT - OUT + C OUT - PE Voltage x 0...1VDC brown red + orange black + green yellow + internal bridge VDC operating voltage 0...1VDC 0...1VDC = Common (not galvanically separated) Voltage x VDC brown red + orange black + green yellow + internal bridge...30vdc operating voltage VDC VDC 3) see load diagram = Common (not galvanically separated)

6 Humidity-Temperature Sensor PM100V with plastic housing IP Plug-and-Measure Unit "PMU-V" exchangeable PM-VE page , Humidity-Temperature Sensor PM80V with housing made of aluminium die-casting IP64! The electrical connection must only be carried out by properly qualified personnel Plug-and-Measure Unit "PMU-V" exchangeable Bohrbild Gabarit de perçage Mounting drawing , Bohrbild Gabarit de perçage Mounting drawing ,8 Humidity-Temperature Sensor PMV in cable version Plug-and-Measure Unit "PMU-V" exchangeable

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