Duct humidity and temperature sensor KFTF-35
temperature Temperature
temperature Luftfeuchtigkeit

Duct humidity and temperature sensor HYGRASGARD® KFTF-35

Product group: WG02

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738,13 €
878,37 € incl. VAT + shipping
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Description

Duct humidity and temperature sensor HYGRASGARD® KFTF-35
Condensation-protected ductsensor HYGRASREG® KFTF-35 with active and switching output, housing made of impact-resistant plastic with quick-locking screws, cable gland, plastic sinter filter (replaceable), optionally with/ without display, for detecting relative humidity (0…100 % RH) and temperature (4 switchable measuring ranges, max. 0...+100 °C) as well as for determining various parameters of humidity measurement technology. The measuring transducer converts the measured variables into a standard signal of 0 - 10 V or 4…20 mA.
The unit is specially designed for use in the high humidity range (95…99 % RH). A long-term stable, digital humidity and temperature sensor is used. Overtemperature prevents or hinders dew formation on the humidity sensor. A second, separate temperature measuring element is used to determine the actual relative humidity of the ambient air. The following measured variables are calculated internally from these parameters and are retrievable via output OUT3: absolute humidity, mixing ratio, dew point and wet bulb temperature (can be changed via DIP switch).
The sensor is used in medical technology, refrigeration technology, control technology, air conditioning and clean room technology. The sensor is factory-calibrated; an environmental precision adjustment by an expert is possible.

Technical details

Voltage supply
24 V AC/ DC
Power consumption
< 3 VA/ 24 V DC ; when heating
Data points
Temperature [°C], relative humidity [% RH], absolute humidity [g / m3],
dew point [°C], mixing ratio [g / kg], wet bulb temperature [°C]
Measuring range, humidity
0...100 % RH
Operating range, humidity
10 … 99 % RH (probe), 10 … 95 % RH (housing)
Deviation of humidity
± 2 % r. H. (40…60 %) at + 20 °C,
Measuring range, temperature
0...+50 / –20...+50 / –20...+80 / 0...+100 °C
Operating range, temperature
0...+50 °C
Temperature deviation
± 0.5 K at + 20 °C
Sensor protection
metal sinter filter, exchangeable
Current consumption
max. 100 mA when heating
Measuring ranges
0...100 % RH
0...+50 / –20...+50 / –20...+80 / 0...+100 °C
Ambient temperature
storage - 25 …+ 60 °C,
operation -5 …+ 55 °C
Process connection
by mounting flange, plastic
(included in the scope of delivery)
Protective tube
PLEUROFORM, material polyamide (PA6), with torsion protection,
Ø 20 mm, NL = 235 mm (optionally 100 mm), vmax = 30 m/s (air)
Electrical connection
3- or 4-wire connection
0.14 -1.5 mm ² via terminal screws on circuit board
Housing
plastic, UV-stabilised,
material polyamide, 30 % glass-globe reinforced,
with quick-locking screws
(slotted/ Phillips head - combination),
colour traffic white (similar to RAL 9016)
Cable gland
M 16 x 1.5, including strain relief, exchangeable,
max. inner diameter 10.4 mm
Dimensions
108 x 70 x 73,5 mm (Thor 2)
Protection class
III (according to EN 60 730)
Protection type
IP 65 (according to EN 60 529)*
Protection type housing
IP 65
Standards
CE conformity, electromagnetic compatibility
according to EN 61 326 + A1 + A2,
EMC directive 2004/ 108/ EC
Function
High humidity range (95...99 % RH), dew protected