KFTF
Duct humidity and temperature sensor active optionally with passive sensor
Application
The KFTF with or without display is a humidity/temperature sensor which measures the relative or absolute humidity and the temperature of the air. It is used in refrigeration, ventilation, air conditioning and clean room technology, in greenhouses and halls and converts the measured variables humidity and temperature into a standard signal 0-10 V or 4…20mA. The housings are suitable for duct mounting.
Technical Data
| Power supply: | 24V AC/DC ± 20% with output 0-10V 15-30 VDC ± 20% with output 4...20mA |
| Power consumption: | 0-10V type 5mA |
| Sensoren: | kapazitiver Feuchtesensor, betauungsfest, kleine Hysterese, hohe Langzeitstabilität |
| Sensors: | capacitive humidity sensor, dew resistant, small hysteresis, high long-term stability |
| sensor protection: | Membrane filter, replaceable |
| Humidity measuring range: | adjustable: relative humidity 0...100% or absolute humidity 0...80g/m³ |
| Humidity deviation: | relative humidity: ± 3% rH, (20...80%); at +20 °C, otherwise ± 6% rH. absolute humidity: results from measurement errors of the rel. humidity and temperature |
| Output humidity: | 0-10 V for U-variant 4...20mA for I-variant (must be connected otherwise no T output signal) |
| Temp. measuring range: | 0-10V or 4-20mA preset to -20...+80 °C, other measuring ranges adjustable 0..+50 °C, 0...+80 °C, -35...+35 °C, -50...+50 °C, -35...+75 °C passive sensor see data sheets |
| Temperature deviation: | ± 0.4K at 20 °C, depending on installation |
| Temperature output: | 0-10 V or 4...20mA or Ohm value |
| Ambient temperature: | 0...+50°C |
| Humidity: | < 95 % rH, non-condensing air |
| Connection head: | ABS/ PC, colour pure white (similar to RAL9010), 4 quick release screws |
| Dimensions: | 81 x 55 x 35 mm plus PG |
| Protective pipe: | ABS/ PC, colour pure white (similar to RAL9010), EL=160mm, ø 16.5mm |
| Display (optional): | LCD display |
| Electrical connection: | 2-, 3-, or 4-wire (see circuit diagram), 0.14- 1.5 mm² via screw terminals on circuit board |
| Cable gland: | M 16, with strain relief |
| Process connection: | by means of ABS/PC mounting flange (included) |
| Long-term stability: | ± 1 %/ 10 years |
| Protection class: | III (according to EN 60 730) |
| Protection type: | IP 65 (according to IEC 529) |
| Standards: | CE conformity, electromagnetic compatibility according to EN 61 326 +A1+A2, EMV Directive 89/336/EWG |
