- New
- Sale
- Temperature
- Humidity
- Pressure
- Light Intensity & Motion
- Air Quality
- Flow
- Modbus | Wireless Modbus
- Room controller
- EtherCAT P
- Accessory
Description
Duct hygrostats
HYGRASREG® KHT - 30
Electronic HYGRASREG® KHT-30 duct hygrostat and/or duct thermostat with one continuous and two switching outputs, adjustable switching thresholds and a display for indicating actual humidity and/or actual temperature (accuracy class ±2.0% RH). The setpoints can be allocated to relative humidity and/or temperature.
The sensor device serves to control and monitor relative humidity (humidifying and dehumidifying equipment) and/or temperature (heating and cooling systems) e.g. in ventilation and air conditioning ducts, laboratories, production facilities, climate test chambers, indoor swimming pools, greenhouses, etc.
The measuring transducer has been designed for exact humidity/temperature measurement. The KHT-30 has a digital, long-term stable sensor as a measuring element. It is used in dust-free, unpolluted, non-aggressive air.
The measuring transducer has been designed for exact humidity/temperature measurement. The KHT-30 has a digital, long-term stable sensor as a measuring element. It is used in dust-free, unpolluted, non-aggressive air.
Technical details
Voltage supply
24 V AC/ DC (± 20 %)
Power consumption
< 1.5 VA/ 24 V DC, < 3.5 VA/ 24 V AC
Measuring accuracy
typically ± 0.4 °F at +77 °F
Sensor
digital humidity sensor
with integrated temperature sensor,
low hysteresis, high long-term stability
with integrated temperature sensor,
low hysteresis, high long-term stability
Sensor protection
plastic sinter filter, Ø 0.63 in, L = 1.38 in, exchangeable
(optional metal sinter filter, Ø 0.63 in, L = 1.26 in)
(optional metal sinter filter, Ø 0.63 in, L = 1.26 in)
Operating difference
Mode 1: both switch steps are freely adjustable (rel. humidity)
Mode 2: 5 % between both switch steps (rel. humidity)
Mode 3: both switch steps freely adjustable (temperature)
Mode 4: switch step 1 (temperature), switch step 2 (rel. humidity)
(adjustable via DiP switches)
Mode 2: 5 % between both switch steps (rel. humidity)
Mode 3: both switch steps freely adjustable (temperature)
Mode 4: switch step 1 (temperature), switch step 2 (rel. humidity)
(adjustable via DiP switches)
Accuracy
typical ± 2.0 % (20…80 % RH); at + 77 °F, otherwise ± 3.0 %
Setting range
5...95 % RH (humidity)
Multi-range switching with
4 switchable measuring ranges
–31...+95 °F; –31...+167 °F; +32...+122 °F; +32...+176 °F (temperature)
(Switch steps 1 and 2 are separately adjustable)
Multi-range switching with
4 switchable measuring ranges
–31...+95 °F; –31...+167 °F; +32...+122 °F; +32...+176 °F (temperature)
(Switch steps 1 and 2 are separately adjustable)
Ambient temperature
storage –31...+185 °F,
operation –22...+158 °F, non-precipitating
operation –22...+158 °F, non-precipitating
Protective tube
PLEUROFORM, material polyamide (PA6), with torsion protection,
Ø 0.79 in, NL = 9.3 in (optionally 3.9 in), vmax = 98.4 ft/s (air)
(option on request in stainless steel V2A (1.4301), Ø 0.63 in)
Ø 0.79 in, NL = 9.3 in (optionally 3.9 in), vmax = 98.4 ft/s (air)
(option on request in stainless steel V2A (1.4301), Ø 0.63 in)
Electrical connection
AWG 16 - 26 via terminal screws
Cable connection
cable gland, plastic (M 16 x 1.5; with strain relief, exchangeable, max. inner diameter 0.4 in) or
M12 connector according to DIN EN 61076-2-101 (optional on request)
M12 connector according to DIN EN 61076-2-101 (optional on request)
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),
housing cover for display is transparent !
material polyamide, 30 % glass-globe reinforced,
with quick-locking screws
(slotted/ Phillips head - combination),
colour traffic white (similar to RAL 9016),
housing cover for display is transparent !
Housing dimensions
4.96 x 3.54 x 1,97 in (Tyr 2)
Cable gland
M 16 x 1.5, including strain relief, exchangeable,
max. inner diameter 0.4 in
max. inner diameter 0.4 in
Long-term stability
± 1 % per year
Protection class
III (according to EN 60 730)
Protection type
IP 65 (according to EN 60 529) enclosure only!
Standards
CE conformity, EMC directive 2014/ 30/ EU
Display
three-line display with illumination, cutout approx. 2.8 x 1.8 in (W x H),
for displaying ACTUAL humidity and/or ACTUAL temperature
or for setpoint adjustment
for displaying ACTUAL humidity and/or ACTUAL temperature
or for setpoint adjustment
Function
Humidifying/heating:1st step: wire contacts 11 - 12.
If actual humidity falls more than 3 % RH / 1 K (hysteresis) below
switching threshold S1, the changeover contact switches to 11 - 12. 2. step: wire contacts 21 - 22.
If actual humidity falls more than 3 % RH / 1 K (hysteresis) below
switching threshold S2, the changeover contact switches to 21 - 22.
Terminal 2: output relative humidity / temperatureDehumidifying/cooling:1st step: wire contacts 11 - 13.
When actual humidity exceeds switching threshold S1,
the changeover contact switches to 11 - 13. 2. step: wire contacts 21 - 23.
When actual humidity exceeds switching threshold S 2,
the changeover contact switches to 21 - 23.
Terminal 2: output relative humidity / temperature
If actual humidity falls more than 3 % RH / 1 K (hysteresis) below
switching threshold S1, the changeover contact switches to 11 - 12. 2. step: wire contacts 21 - 22.
If actual humidity falls more than 3 % RH / 1 K (hysteresis) below
switching threshold S2, the changeover contact switches to 21 - 22.
Terminal 2: output relative humidity / temperatureDehumidifying/cooling:1st step: wire contacts 11 - 13.
When actual humidity exceeds switching threshold S1,
the changeover contact switches to 11 - 13. 2. step: wire contacts 21 - 23.
When actual humidity exceeds switching threshold S 2,
the changeover contact switches to 21 - 23.
Terminal 2: output relative humidity / temperature