Duct humidity- and temperature sensors


Calibratable duct humidity and temperature sensor HYGRASGARD® KFTF - Modbus - T3 (± 2.0%) or KFTF - 20 - Modbus - T3 (± 1.8%), with Modbus connection, in an impactresistant plastic housing with quick-locking screws, optionally with/ without display, with a plastic sinter filter (exchangeable), incl. mounting flange.

The sensor is used to detect various parameters in humidity measurement. It measures the relative humidity (0...100% r.H.) and the temperature (– 35...+80 °C) of the ambient air. These measurands are used to internally calculate the following parameters that can be retrieved via Modbus: relative humidity [% r. H.], absolute humidity [g/m³], mixture ratio [g/ kg], dew point temperature [°C], enthalpy [kJ⁄ kg] (ignoring atmospheric air pressure) and ambient temperature [°C]. A long-term stable, digital sensor guarantees exact measurement results.

The duct sensor is applied in a non-aggressive, dust-free environment and is suitable for installation in ceilings, ducts and devices. It is used in the refrigeration, air conditioning and clean room technology, engineering rooms, hotels and conference facilities.

Innovative Modbus sensor with galvanically separated RS485-Modbus-interface, selectable bus termination resistance, DIP switch for setting the bus parameters and bus address in current-free state, LEDs for telegram status display, two separate push-in terminals and large three-line display (illuminated; with customised programming in the 7-segment and dot-matrix range). The sensor is factory-calibrated; an environmental precision adjustment by an expert is possible.

Measuring Range/ Readout
Humidity (switchable)
0...100 % r. H. (Standard)
0...80 g/ kg (MR)
0...80 g/ m3 (A.H.)
0...85 kJ/ kg (ENT.)
–20...+80 °C (TP)
Temperature: –35...+80 °C
Output: Modbus

Type Kommunikation Equipment Display 1. Temperature range Arbeitsdruck PN max. Buttons Cable connection Colour Control Function Housing Colour Housing_material Kommunikation Measuring range relative humidity Messbereiche CO2 Movement Output Output type Printing Prozessanschluß (SW) Rod length Rohr Ø DN Schutzart(Filter) Sensor-Toleranz Feuchte Sleeve length Temperature-measuring range for insertion length Channels Sensor VOC measuring range Free cable length Housing name Cable material Measuring range pressure Item No. Price
KFTF-Modbus-T3 2 % 1201-32C6-1000-029 180,81 €
KFTF-20-Modbus-T3 1.8 % 1201-32C6-1000-030 236,35 €
KFTF-Modbus-T3 LCD 2 % 1201-32C6-1400-029 228,36 €
KFTF-20-Modbus-T3 LCD 1.8 % 1201-32C6-1400-030 356,09 €