D Series Sensors for Humidity and Temperature Measurement With calibrated dModul Type DW Industrial version for wall mounting Optional display • dynamic MELA® humidity sensing element • output of all hx values • calibrated dModul for humidity and temperature measurement • in situ alignment • easy to install • operating temperatures up to 80°C The core part of the D Series is the digital calibrated dModul, which processes the measurement values of relative humidity and temperature individually. The values are compared to the calibration values stored in the dModul and communicated digitally to the transmitter electronics, where they are processed to standardised current and voltage signals. The housings of the industrial versions provide protection in accordance with IP 65. Only a single screw is required to close it securely. Technical data Humidity Electrical data measuring element capacitive MELA FE09 output range 0...100 %RH measuring uncertainty 10...90 %RH at 10...40°C < 10 %RH or > 90 %RHat 10...40°C influence of temperature <10°C or >40°C ±2 %RH ±2.5 %RH ±0.05 %RH/K 0...1 V 0...10 V 4...20 mA passive temperature outputs on request voltage supply see type survey consumption of electronics (voltage output) load resistance (voltage output) Temperature measuring element output ranges outputs Pt1000 1/3 DIN 0...+50°C -30...+70°C 0...+100°C further ranges on request measuring accuracy sensors with active temperature signal with voltage output at 10...40°C with current output at 10...40°C influence of temperature <10°C or >40°C load RL (current output) electromagnetic compatibility typ. 7 mA ≥10 kΩ RL(Ω)= voltage supply - 10 V ±50 Ω 0,02 A ref. EN 61326-1 and EN 61326-2-3 ±0.2 K ±0.3 K ±0.01 K/K D Series_DW page 1 of 6 General data measuring medium Physical outputs, selectable for two outputs air, pressureless, non-aggressive max. air speed protective cage w. membrane (basic equipment) 10 m/s min. air speed ≥ 0.5 m/s operating temperatures -30...+80°C storage temperatures -40...+85°C connecting terminals max. 1.5 mm² 4-8 mm connection wire diameter per connector total diameter cable degree of protection / measuring head protective cage w. membrane (basic equipment) PTFE sinterd filter (optional) IP 30 IP 65 degree of protection / housing relative humidity temperature -30...+70°C 0...100°C 0...50°C further ranges on request dew point temperature -20...70°C enthalpy 0...80 kJ/kg mixing ratio 0...100 g vapour /kg dry air absolute humidity 0...20 g/m³ or 0...100 g/m³ wet-bulb temperature -10...50°C Load at current output IP 65 material of housing 0...100 %RH PC Ω 1200 1000 800 600 Options display 2 lines 3 digits + 1 decimal place display approx. 21 x 40 mm² digit height approx. 8 mm 400 200 10 15 20 25 30 V DC Type survey DWF Humidity sensor Type Housing Physical value for wall mounting DWF optional display relative humidity Output signal Electrical Voltage corresponds to outputs supply UB 0…100 %RH 0…1 V 6…30 V DC 6...26 V AC 0...10 V 15…30 V DC 13...26 V AC 4...20 mA 10…30 V DC Type survey DWK Humidity and temperature sensor Type DWK Housing Physical value Output signal Electrical Voltage for wall mounting selectable for 2 outputs corresponds to outputs supply UB optional display relative humidity temperature dew point temperature enthalpy mixing ratio absolute humidity wet-bulb temperature Passive temperature output available on request. D Series_DW page 2 of 6 0…100 %RH 0…1 V -30…+70°C 0…+100°C 0…+50°C -20…70°C 6…30 V DC 6...26 V AC 0...10 V 15…30 V DC 13...26 V AC 4...20 mA 10…30 V DC 0…80 kJ/kg 0…100 g vapour /kg dry air 0…20 g/m³ 0…100 g/m³ -10…+50°C Accessories Product n° Description ZE05 sintered filter made of fine-pored PTFE, IP 65 ZE 31/1-12 ZE 31/1-75 humidity standard to check the accuracy of the sensor at 12 %RH humidity standard to check the accuracy of the sensor at 75 %RH ZE 31/1-33 ZE 31/1-84 humidity standard to check the accuracy of the sensor at 33 %RH humidity standard to check the accuracy of the sensor at 84 %RH ZE36 testing adapter for humidity standards for for sensor tubes Ø 12 mm 15 1 18 40 Dimensions 26 57 83 83 50 12 The hole pattern of the sensor is located on the packaging. D Series_DW page 3 of 6 Connection diagrams DWK 2 x 4...20 mA DKK 2x 4…20 mA DWF 4...20 mA 1 2 output humidity 3 + UB 4…20 mA 10…30 V DC DWF 0...1 V DIF 0…1 V DC 1 output temperature 4…20mA 2 output humidity 4…20 mA 3 + UB DC 10…30 V DC DWK 2 x 0...1 V DKK 2x 0…1 V 1 GND 2 + UB 3 output humidity 6…30 V DC or 6…26 V AC 0…1 V 4 DWF 0...10 DIF V 0…10 V DC 1 GND 2 + UB 3 sortie humidité 4 sortie température 0…1 V 6…30 V CC ou 6…26 V CA 0…1 V DWK 2 DIK x 0...10 V V 2x 0…10 1 GND 1 GND 2 + UB 15…30 V DC or 13…26 V AC 2 + UB 3 output humidity 3 output humidity 4 output temperature 0…10 V 4 0…10 V 15…30 V DC or 13…26 V AC 0…10 V ESD protection advice The sensors of the D Series contain components, which can be damaged by the effects of electrical fields or by charge equalisation when touched. The following protective measures must be taken when the housing of the sensor is to be opened for connection or in situ alignment: • • Before opening the housing of the sensor, ensure electrical potential equalisation between you and your environment. Pay particular attention to ensure that this potential equalisation is maintained while you are working with the opened housing. D Series_DW page 4 of 6 In situ alignment During the in situ alignment the sensor does not necessarily have to be taken out of the control circuit. We offer humidity standards for alignment of the sensors (page 3: accessories). Before calibrating the sensor, standards should remain at least 2 hours on the sensors. The temperature must remain constant during this time. For the correct temperature according to the humidity standard used, please refer to data sheet F5.2 Humidity Standards. During calibration temperature and humidity must remain constant. During calibration, especially during storage of data, uninterrupted power supply of the sensor must be provided. During calibration the following measurement ranges are shown on the display/ are used for calibration: CH 1: all sensors always: relative humidity, measuring range 0...100 % RH CH 2: sensors with relative humidity RH output (CH1) and temperature °C output (CH2) the programmed temperature range, unaltered sensors with other hx-values outputs the standard temperature measuring range of -40...85°C The accuracies shown in the technical data of this data sheet refer exclusively to works calibration. Command Operation Transmitter / LED press buttons UP and DOWN simultaneously for at least 8 sec. until LED lights up for 1 sec. press button DOWN for at least 3 sec. until LED blinks 1 time per second no further command necessary LED blinks 1 time per second. press button DOWN 1 time shortly LED blinks twice per second. press button DOWN twice shortly LED blinks 3 times per second. press button DOWN 3 times shortly LED blinks 4 times per second. Confirmation of selection press button UP for at least 3 sec. until LED lights up permanently adjustment buttons UP / DOWN: (press shortly) +/- 0.1 %RH respectively +/- 0.1°C per keystroke saving press button DOWN for at least 3 sec. until LED is off program termination (at any time) press button UP for at least 3 sec. until LED blinks 6 times and then switches off. default attention: all user adjustments will be reset. possible only when adjustment mode is off. (LED must not be lit.) calibration mode selection of type of calibration humidity 1-point-adjustment (offset) humidity 2-point-adjustment lower point at 12 %RH and 20...30°C humdity standard ZE31/1-12 humidity 2-point-adjustment upper point at 75 %RH and 20...30°C humdity standard ZE31/1-75 temperature 1-point-adjustment D Series_DW page 5 of 6 Mounting instructions Position Install the sensor at a place where characteristic levels of humidity occur. The measuring chamber should be located in streaming air. Avoid installation next to heaters, doors or on outer walls. Avoid places exposed to the sun. Do not position the sensor where ingress of water could occur. To close the housing securely turn screw until dead stop. We recommend that you lay the connection lines in a loop so that any water that may be present can run off. Not reaching the given minimum air speed can lead to measurement errors. Connection The electrical connection must be carried out by qualified personnel only. The sensor contains sensitive electrical components. When opening the housing, make sure you comply with the electrostatic discharge precautions (ESD). Please pay attention to the ohmic resistance according to the operating voltage (see diagram on page 2) when using sensors with a current output. Else measurement errors may occur. Lines to and from the sensor must not be installed parallel to strong electromagnetical fields. If there is any chance of an electrical surge, please install surge protection devices. User instructions Dew formation Dew formation and splashes do not damage the sensor, although measurement readings are corrupted until all moisture on and around the sensing element has dried up completely. Cleaning of filters and protective baskets If necessary, soiled filters can be screwed off and rinsed carefully. Bear in mind the sensors wil not measure accurately until filters are completely dry. Please do not touch the highly sensitive humidity sensing element. Please ensure that the temperature sensing element does not touch the sensitive surface of the humidity sensing element. Cleaning of the capacitive humidity sensing element Loose dust can be carefully cleaned off the humidity sensing element using distilled water or by blowing the dust carefully off. Please do not touch the highly sensitive humidity sensing element. Please ensure that the temperature sensing element does not touch the sensitive surface of the humidity sensing element. Damaging influences Depending on type and concentration, agents that are corrosive and contain solvents, can result in faulty measurements and can cause the sensor to break down. Substances deposited on the sensor (e. g. resin aerosols, lacuer aerosols, smoke deposits etc.) are damaging as they eventually form a water-repellent film. 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 protection must be observed. The quality of our products is guaranteed under our General Conditions of Sale. Data sheet DW_EN. Issue: March 2013. Subject to modifications.