D Series Duct version
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Catalog excerpts

D Series Duct version - 1

Galltec Mess- und Regeltechnik GmbH D-71145 Bondorf . Germany Tel. +49 (0)7457-9453-0 . Fax +49 (0)7457-3758 E-Mail: sensoren@galltec.de . Internet:www.galltec-mela.de MELA Sensortechnik GmbH D-07987 Mohlsdorf-Teichwolframsdorf . Germany Tel. +49(0)3661-62704-0 . Fax +49(0)3661-62704-20 E-mail:mela@melasensor.de . Internet: www.galltec-mela.de D Series Sensors for Humidity and Temperature Measurement With calibrated dModul Type DK Industrial version, duct version 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 output range measuring uncertainty 10...90 %RH at 10...40°C < 10 %RH or > 90 %RH at 10...40°C influence of temperature <10°C or >40°C measuring element Pt1000 1/3 DIN 0...+50°C -30...+70°C 0...+100°C further ranges on request measuring uncertainty 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 0...1 V 0...10 V 4...20 mA passive temperature outputs on request voltage supply consumption of electronics (voltage output) load resistance (voltage output) Temperature output ranges load RL (current output) electromagnetic compatibility

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D Series Duct version - 2

General data measuring medium hx Values, selectable for two outputs air, pressureless, non-aggressive operating temperatures transformer part/housing (with display) (without display) at the sensor head storage temperatures degree of protection / measuring head protective cage w. membrane (basic equipment) PTFE sinterd filter (optional) mixing ratio absolute humidity wet-bulb temperature Load at current output degree of protection / housing Options display -30...+70°C 0...100°C 0...50°C further ranges on request Standard length of sensor tube Special lengths max. air speed protective cage w....

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D Series Duct version - 3

Product key D Series Thanks to the hx-converter the D Series offer a wide range of types. The product no. of each type consists of a 16-digit alpha numeric code that descibes the sensor The product key enables you to order the exact type of sensor for your application. Series Design Physical outputs Output signals Operating conditions / Special version Measured variable and Output range 1 Measured variable and Output range 2 Operating voltage (please observe specifications in order code table ) Measuring head / Filter / Diameter Design description Design description / sensor tube Order...

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D Series Duct version - 4

Technical Data Measured value and output range 1 Measured value and ouput range 2 hx-values (as shown on the right) only available for industrial versions DKK and DWK Order code No signal Operating voltage 6...30 V DC or 6...26 V AC / Sensors w. 0...1 V output signal 15...30 V DC or 13...26 V AC / Sensors w. 0...10 V output signal 10...30 V DC for DK and DW w. 4...20 mA output signal 10...25 V DC for DI w. 4...20 mA output signal 12 13 Design description / options Duct version without display Duct version with display Sensor tube Version for wall mounting without display 50 mm sensor tube...

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D Series Duct version - 5

sintered filter made of fine-pored PTFE, IP 65 fixing flange, synthetic material, with fixing mechanism for easy sensor mounting and removal for sensors Ø 12 mm, with rubber sealing (enclosed in delivery) humidity standard to check the accuracy of the sensor at 12 %RH humidity standard to check the accuracy of the sensor at 75 %RH humidity standard to check the accuracy of the sensor at 33 %RH humidity standard to check the accuracy of the sensor at 84 %RH testing adapter for humidity standards for sensor tubes Ø 12 mm Drilling pattern The drilling pattern for mounting the sensor without...

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D Series Duct version - 6

output humidity output humidity output humidity output humidity output humidity output humidity 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...

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D Series Duct version - 7

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,...

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D Series Duct version - 8

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. Fixing flange The hole pattern of...

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