- New
- Sale
- Temperature
- Humidity
- Pressure
- Light Intensity & Motion
- Air Quality
- Flow
- Rymaskon
- Modbus | Wireless Modbus
- EtherCAT P
- Accessory
Description
Room humidity and temperature sensor
HYGRASGARD® RFTF - Modbus
Quality product for the HVAC sector, accuracy ±2%
A long-term stable, digital humidity and temperature sensor guarantees exact measurement
results. The sensor is factory-calibrated; an environmental precision adjustment by an expert
is possible. Modbus sensor with galvanically separated RS485 Modbus interface, selectable
bus termination resistance, DIP switches for setting the bus parameters and bus address in a
currentless state, internal LEDs for telegram status display and two-line display (illuminated,
in the 7-segment and dot-matrix range, individually programmable).
Technical details
Voltage supply
24 V AC (± 20 %) and
15…36 V DC
15…36 V DC
Power consumption
< 1,2 W/ 24 V DC
< 2,2 VA/ 24 V AC
< 2,2 VA/ 24 V AC
Data points
Temperature [°C], relative humidity [% RH],
dew point [°C], absolute humidity [g / m3],
mixture ratio [g / kg], enthalpy [kJ / kg]
dew point [°C], absolute humidity [g / m3],
mixture ratio [g / kg], enthalpy [kJ / kg]
Measuring range, humidity
0...100 % RH
Deviation of humidity
typical ± 2.0 % (20…80 % RH); at + 25 °C, otherwise ± 3.0 %
Measuring range, temperature
0...+50 °C
Temperature deviation
typically ± 0.2 K at +25 °C
Measuring range
0...100 % RH (humidity)
-35...+80 °C (temperature)
-35...+80 °C (temperature)
Zero point offset
± 10 % r.H. (humidity)
± 10 °C (temperature)
adjustable using potentiometer
± 10 °C (temperature)
adjustable using potentiometer
Ambient temperature
storage –35...+85 °C;
operation 0...+50 °C
operation 0...+50 °C
Medium
clean air and
non-aggressive, non-combustible gases
non-aggressive, non-combustible gases
Signal filtering
4 s / 32 s
Housing
plastic, material ABS,
colour pure white (similar to RAL 9010)
colour pure white (similar to RAL 9010)
Dimensions
98 x 98 x 33 mm (Baldur 2)
Sensor
digital humidity sensor
with integrated temperature sensor,
low hysteresis, high long-term stability
with integrated temperature sensor,
low hysteresis, high long-term stability
Long-term stability
± 1 % per year
Permissible air humidity
< 95 % RH, non-precipitating air
Protection class
III (according to EN 60 730)
Protection type
IP 30 (according to EN 60 529)
Standards
CE conformity
according to EMC Directive 2014/ 30/ EU,
according to EN 61 326
according to EMC Directive 2014/ 30/ EU,
according to EN 61 326
Units
switchable metric / imperial
Bus protocol
Modbus (RTU mode),
address range 0...247 selectable
address range 0...247 selectable
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
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
Display
Display with illumination, two-line, programmable,
cutout approx. 36 x 15 mm (B x H),
to display actual humidity and temperature
or a selectable parameter
or an individually programmable display value
cutout approx. 36 x 15 mm (B x H),
to display actual humidity and temperature
or a selectable parameter
or an individually programmable display value