Duct moisture sensor

HYGRASGARD® duct humidity sensors reliably and precisely measure the relative humidity and/or temperature in ventilation ducts, in refrigeration, air conditioning and clean room technology and convert the measured variables into a standard signal of 0-10 V or 4...20 mA. Some models also have a potential-free changeover contact as an output - ideal for flexible switching applications in building technology.
Many device groups can also display additional parameters: relative humidity [% r. H.], absolute humidity [g/ m³], mixing ratio [g/ kg], dew point temperature [°C], enthalpy [kJ/ kg] and ambient temperature [°C].

°C + % RH
Channel humidity and temperature sensors (± 2.0%)

HYGRASGARD® KFTF-ECATP

2003-4221-9100-001
0...100 % RH
–35...+80 °C
Humidity accuracy: ± 2 % / Temp.: ± 0.4 K
Temperature [°C], relative humidity [% RH],
dew point [°C], absolute humidity [g / m³],
mixing ratio [g / kg], enthalpy [kJ / kg]
EtherCAT P
IP 54
$499.65
°C + % RH
Duct humidity and temperature sensors

HYGRASGARD® KFTF-20-Modbus LCD

1201-3216-1200-030
0...100 % RH
−35...+80 °C
Humidity accuracy: ± 1.8 % / Temp.: ± 0.6 K
Temperature [°C], relative humidity [% RH],
dew point [°C], absolute humidity [g / m³],
mixing ratio [g / kg], enthalpy [kJ / kg]
Modbus RTU
IP 65
$508.58
°C + % RH
Duct humidity and temperature sensors

HYGRASGARD® KFTF-20-Modbus-T3 LCD

1201-32C6-1400-030
0...100 % RH
−35...+80 °C
Humidity accuracy: ± 1.8 % / Temp.: ± 0.2 K
Temperature [°C], relative humidity [% RH],
dew point [°C], absolute humidity [g / m³],
mixing ratio [g / kg], enthalpy [kJ / kg]
Channel error
Modbus
IP 65
$528.93
°C + % RH
Duct humidity and temperature sensors

HYGRASREG® KFTF-45-U/W LCD

1201-816A-1200-000
0...100 % RH
0...+50 / –20...+50 / –20...+80 / 0...+100 °C
Temperature [°C], relative humidity [% RH], absolute humidity [g / m³],
dew point [°C], mixing ratio [g / kg], wet-bulb temperature [°C]
up to three parameters displayed
3 active outputs (0 - 10 V or 4...20 mA)
1 changeover contact (potential-free, 48 V, 0.1 A,
switching hysteresis: 2 % of the selected scaling)
IP 65 (acc. to EN 60 529)
>> Enclosure AND sensing technology <<
$557.45
°C + % RH
Duct humidity and temperature sensors

HYGRASREG® KFTF-45-I/W LCD

1201-816B-1200-000
0...100 % RH
0...+50 / –20...+50 / –20...+80 / 0...+100 °C
Temperature [°C], relative humidity [% RH], absolute humidity [g / m³],
dew point [°C], mixing ratio [g / kg], wet-bulb temperature [°C]
up to three parameters in the display
3 active outputs (0 - 10 V or 4...20 mA)
1 changeover contact (potential-free, 48 V, 0.1 A,
switching hysteresis: 2 % of the selected scaling)
IP 65 (per EN 60 529)
>> Enclosure AND sensing
$557.45
°C + % RH
Duct humidity and temperature sensors (± 2.0 %)

HYGRASGARD® KFTF-ECATP LCD

2003-4222-9100-001
0...100 % RH
−35...+80 °C
Humidity accuracy: ± 2 % / Temp.: ± 0.4 K
Temperature [°C], relative humidity [% RH],
dew point [°C], absolute humidity [g / m³],
mixing ratio [g / kg], enthalpy [kJ / kg]
EtherCAT P
IP 54
$559.06
°C + % RH
Duct humidity and temperature sensors

HYGRASGARD® KFTF-20-wModbus LCD

1201-32CF-1400-030
0...100 % RH
−35...+80 °C
Humidity accuracy: ± 1.8 % / Temp.: ± 0.2 K
Temperature [°C], relative humidity [% RH],
dew point [°C], absolute humidity [g / m³],
mixing ratio [g / kg], enthalpy [kJ / kg]
Duct error
W-Modbus
IP 65
$578.80
°C + % RH
Screw-in humidity and temperature sensors for pressurized systems

HYGRASGARD® ESFTF-I

1201-2112-1000-000
0...100 % RH
0...+50 / −20...+80 / −30...+70 / 0...+100 °C

Temperature [°C], relative humidity [% RH],
dew point [°C], absolute humidity [g / m³],
mixing ratio [g / kg]

4...20 mA

Nominal pressure: 10 bar

IP 65
$679.25
°C + % RH
Screw-in humidity and temperature sensors for pressurized systems

HYGRASGARD® ESFTF-U

1201-2111-1000-000
0...100 % RH
0...+50 / −20...+80 / −30...+70 / 0...+100 °C

Temperature [°C], relative humidity [% RH],
dew point [°C], absolute humidity [g / m³],
mixing ratio [g / kg]

0 - 10 V

Rated pressure: 10 bar

IP 65
$679.25
°C + % RH
Duct humidity and temperature sensors

HYGRASGARD® KFTF-20-U VA

2003-4161-1200-001
–35...+35 / –35...+75 / 0...+50 / 0...+80 °C
0...100 % RH
Humidity accuracy: ± 1.8 % / Temp.: ± 0.2 K
Temperature [°C], relative humidity [% RH]
0 - 10 V
IP 65
$801.10
°C + % RH
Duct humidity and temperature sensors

HYGRASGARD® KFTF-20-I VA

2003-4161-2200-001
−35...+35 / −35...+75 / 0...+50 / 0...+80 °C
0...100 % RH
Humidity accuracy: ±1.8 % / Temp.: ±0.2 K
Temperature [°C], relative humidity [% RH]
4...20 mA
IP 65
$801.10
°C + % RH
Screw-in humidity and temperature sensors for pressurized systems

HYGRASGARD® ESFTF-I LCD

1201-2112-1200-000
0...100 % RH
0...+50 / −20...+80 / −30...+70 / 0...+100 °C

Temperature [°C], relative humidity [% RH],
dew point [°C], absolute humidity [g / m³],
mixing ratio [g / kg]

4...20 mA

Nominal pressure: 10 bar

IP 65
$813.42
°C + % RH
Screw-in humidity and temperature sensors for pressurized systems

HYGRASGARD® ESFTF-U LCD

1201-2111-1200-000
0...100 % RH
0...+50 / −20...+80 / −30...+70 / 0...+100 °C

Temperature [°C], relative humidity [% RH],
dew point [°C], absolute humidity [g / m³],
mixing ratio [g / kg]

0 - 10 V

Rated pressure: 10 bar

IP 65
$813.42
°C + % RH
Duct humidity and temperature sensors

HYGRASGARD® KFTF-20-I VAQ

2003-4161-2100-001
–35...+35 / –35...+75 / 0...+50 / 0...+80 °C
0...100 % RH
Humidity accuracy: ± 1.8 % / Temp.: ± 0.2 K
Temperature [°C], relative humidity [% RH]
4...20 mA
IP 65
$850.58
°C + % RH
Duct humidity and temperature sensors

HYGRASGARD® KFTF-20-U VAQ

2003-4161-1100-001
–35...+35 / –35...+75 / 0...+50 / 0...+80 °C
0...100 % RH
Humidity accuracy: ± 1.8 % / Temp.: ± 0.2 K
Temperature [°C], relative humidity [% RH]
0 - 10 V
IP 65
$865.43
°C + % RH
Duct humidity and temperature sensor

HYGRASGARD® KFTF-35-U/W

1201-814A-1000-000
0...100 % RH
0...+50 / −20...+50 / −20...+80 / 0...+100 °C
Temperature [°C], relative humidity [% RH], absolute humidity [g / m³],
dew point [°C], mixing ratio [g / kg], wet-bulb temperature [°C]
High-humidity range (95...99 % RH), condensation-protected
0 - 10 V, converter (48V)
IP 65
$920.28

We also manufacture individually

Do you have special requirements? As a manufacturer with our own production facilities in Germany, we are also able to produce products outside of the standard range at any time.

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