Room temperature measuring transducer

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Room temperature measuring transducer THERMASGARD® RTM1-Modbus
Calibratable room temperature measuring transducer THERMASGARD® RTM1 Modbus With Modbus connection, with ⁄ without optional display for displaying the actual temperature, in an elegant housing made of plastic, with snap-on lid, base with 4-hole attachment, for installation on vertically or horizontally installed in-wall flush boxes, with predetermined breaking point for on-wall cable entry.
The calibratable room operating sensor measures the temperature of non-aggressive gases, particularly air. In this case, a setpoint potentiometer is available as an operating element. Optional devices with LCD displays for displaying readings are available for temperature/humidity/dew point or setpoint readings. The displays (LCD) and the retrieval of measurement and control values are triggered via the Modbus interface.
Technical details
Voltage supply
24 V AC (± 20 %) and
15…36 V DC
Power consumption
< 1,0 VA/ 24 V DC
< 2,2 VA/ 24 V AC
Data points
temperature, relative humidity, dew point,
setpoint potentiometer
Deviation of humidity
typical ± 2.0 % r. H. (20…80 % r. H. ); at + 25 °C, otherwise ± 3.0 % r. H.
Temperature deviation
typically ± 0.2 K at +25 °C
Measuring range
0...+50 °C
digital humidity sensor
with integrated temperature sensor,
low hysteresis, high long-term stability
Zero point offset
± 10 °C, adjustable by potentiometer
Ambient temperature
storage –35...+85 °C;
operation 0...+50 °C
clean air and
non-aggressive, non-combustible gases
Bus protocol
Modbus (RTU mode),
address range 0...247 selectable
Signal filtering
4 s / 32 s
Process connection
by screws
plastic, material ABS,
colour pure white (similar to RAL 9010)
85 x 85 x 27 mm (Baldur 1)
Permissible air humidity
< 95 % r. H., non-precipitating air
Protection class
III (according to EN 60 730)
Protection type
IP 30 (according to EN 60 529)
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
CE conformity,
electromagnetic compatibility according to EN 61326,
according to EMC Directive 2014/ 30/ EU
Two-line display with illumination
, cutout 36 x 15 mm (W x H),
for displaying the ACTUAL temperature and the internal diagnostics
(sensor breakage, sensor short circuit)