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Elegant appearance, touch-operated interface, large display, and Modbus-compatible

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Good room climate is measurable!

Active and Modbus capable room sensors for temperature, humidity and CO2 now also for in-wall installation!

AERASGARD® FSCO2

All quite relative

Pressure measuring transducer for gaseous and liquid media in cost-efficient Standard version for 0 to 16 bar

PREMASGARD® SHD-SD

VOC in focus

Room and duct sensors for detection of mixed gases in cost-efficient Standard versions

AERASGARD® RLQ-SD

Für jede Anwendung die richtige Lösung [Translate]

RHT-30W DISPLAY

HYGRASREG® RHT-30W DISPLAY

Item No. 1202-4077-1211-200
EAN 4 251325 611778

Electronic room hygrostat and/or room thermostat HYGRASREG® RHT-30 with one continuous and two switching outputs, adjustable switching thresholds, with ⁄ without optional display for indicating ACTUAL humidity and/or ACTUAL temperature (accuracy class ± 2.0 % r.H.). The setpoints can be allocated to the relative humidity and/or to the temperature. It is suitable for regulating and monitoring relative humidity (humidifying and dehumidifying) and/or the temperature (heating and cooling), e.g. in ventilation and air conditioning ducts, laboratories, production facilities, climatic test cabinets, indoor swimming pools, greenhouses, etc., to control humidifying and dehumidifying equipment or heating system control. The measuring transducers are designed for exact humidity/temperature measurement. The RHT-30 uses a digital, long-term stable sensor as a measuring element. It is used in dust-free, unpolluted, non-aggressive air.

167,00 € net
Voltage supply 24 V AC (± 20 %) and
15…36 V DC
Power consumption < 1.5 VA ⁄ 24 V DC, < 3.5 VA ⁄ 24 V AC
Load resistance RL > 5 kOhm
Deviation of humidity typical ± 2.0 % r. H. (20…80 % r. H. ); at + 25 °C, otherwise ± 3.0 % r. H.
Temperature deviation ± 0.2 K at +25 °C
Deviation, humidity typical ± 2 % r. H. (20…80 % r. H. ); at + 25 °C, otherwise ± 3 % r. H.
± 0,2 K at +25 °C
Output potential-free changeover contacts
(2 x changeover contact 24 V, 1A ohmic load, separately adjustable,
1x 0 - 10 V)
Sensor digital humidity sensor
with integrated temperature sensor,

low hysteresis, high long-term stability
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)
Setting range 5...95 % r.H. (Humidity)
+5...+ 45 °C (Temperature)
(switch steps 1 and 2 are separately adjustable)
Ambient temperature storage –35...+85 °C,
operation – 30...+70 °C, non-precipitating
Electrical connection 0.14 - 1.5 mm² via terminal screws
Enclosure plastic, material ABS,
colour pure white (similar to RAL 9010)
Enclosure dimensions 98 x 98 x 35 mm (Baldur 2)
Installation wall mounting or on in-wall flush box, Ø 55 mm,
base with 4 holes, for attachment to vertically or
horizontally installed in-wall flush boxes for rear cable entry,
with predetermined breaking point for cable entry
from top ⁄ bottom in case of plain on-wall installation
Long-term stability ± 1 % ⁄ year
Protection class III (according to EN 60 730)
Protection type IP 30 (according to EN 60 529)
Standards CE conformity, EMC directive 2014 ⁄ 30 ⁄ EU
Display two-line display with illumination, cutout approx. 36 x15 mm (W x H),
for displaying ACTUAL humidity and/or ACTUAL temperature
respectively for setpoint adjustment
Function Humidifying/heating:

1st step: wire contacts 11 - 12.
If actual humidity falls more than 3 % r.H. / 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 % r.H. / 1 K (hysteresis) below
switching threshold S2, the changeover contact switches to 21 - 22.
Terminal 2: output relative humidity / temperature

Dehumidifying/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

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