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HYGRASGARD® FSFTM - Modbus

The HYGRASGARD® FSFTM - Modbus room sensor and measuring transducer with in-wall housing and optional potentiometer is used to measure the relative humidity and temperature of the air, and for setpoint adjustment. The following parametres are calculated internally from the measured values: relative humidity [% r.H.], absolute humidity [g/m³], mixture ratio [g/kg], dew point temperature [°C], enthalpy [kJ/kg] (ignoring atmospheric air pressure) and room temperature [°C]. The parametres can be queried via the Modbus interface.

A digital, long-term stable sensor is used for humidity and temperature measurement.
Relative humidity [% r.H.] is the quotient of water vapour partial pressure divided by the saturation vapour pressure at the respective gas temperature.

The in-wall transmitter is mounted either individually or in combination with light switches, socket outlets, etc. in high-quality panel switch brand programmes, such as preferably from Gira, Berker, Merten, Jung, Siemens or Busch-Jaeger (with in-wall adapters, no setpoint adjustment possible).

It is used in non-aggressive, dust-free environments, in refrigeration, air conditioning and cleanroom engineering, and in interior spaces, such as living rooms, offices, hotels, etc.


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产品编号 1201-9226
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Voltage supply
24 V AC/ DC (± 10 %)
Power consumption
< 1.1 VA/ 24 V DC ; < 2.2 VA/ 24 V AC
Data points
temperature, relative humidity, absolute humidity,
dew point, mixing ratio, enthalpy
and setpoint potentiometer
(no setpoint adjustment possible with Busch-Jaeger)
Measuring range, humidity
0...100 % RH
Operating range, humidity
0...95 % r. H. (without dew formation)
Deviation of humidity
typically ± 3.0 % (20...80 % r. H.) at +25 °C, otherwise ± 5.0 %
Measuring range, temperature
0...+50 °C
Temperature deviation
typically ± 0.8 K at +25 °C
Sensor
digital humidity sensor
with integrated temperature sensor,
low hysteresis, high long-term stability
Ambient temperature
storage –35...+85 °C;
operation 0...+50 °C
Medium
clean air and
non-aggressive, non-combustible gases
Bus protocol
Modbus (RTU mode),
address range 0...247 selectable
Signal filtering
4 s / 32 s
Electrical connection
0.14 - 1.5 mm², using plug terminals
Housing
plastic, colour pure white glossy (similar to RAL 9010)
(other colours are possible on request with colour variants
depending on the respective switch programme)
Installation
in in-wall flush box Ø 55 mm
Long-term stability
± 1 % per year
Permissible air humidity
max. 90 % r. H., non-precipitating air
Protection class
III (according to EN 60 730)
Protection type
IP 20 (according to EN 60 529)
Standards
CE conformity,
electromagnetic compatibility according to EN 61326,
according to EMC Directive 2014/ 30/ EU
Manufacturer
GIRA System 55 Standard
(other switch programmes, manufacturers, colours
and prices upon request


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