S+S Regeltechnik HYGRASGARD RFTF-Modbus Notice D'instruction page 17

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HYGRASGARD
The calibratable room sensor HYGRASGARD
base with 4-hole attachment, optionally with/without display, measures air humidity (0...100 % RH) and temperature (0...+50 °C / +32...+122 °F).
International system of units SI (default) can be changed to imperial (via Modbus). These measured values are used to internally calculate the following
parameters that can be retrieved via Modbus: relative humidity, absolute humidity, mixture ratio, dew point temperature, enthalpy (ignoring atmos-
pheric air pressure) and temperature. Available as a room control unit in various type versions with control elements such as setpoint potentiometer
(%), rotary switch (5-step), presence button or five-colour LEDs (colours and modes configurable) for displaying the operating states.
A long-term stable, digital humidity and temperature sensor guarantees exact measurement results. The sensor is factory-calibrated; an environ-
mental 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 DATA
Power supply:
Power consumption:
Sensor:
System of units:
Data points:
Measuring range:
Deviation, humidity:
Deviation, temperature:
Zero point offset:
Ambient temperature:
Medium:
Bus protocol:
Baud rate:
Signal filtering:
Electrical connection:
Housing:
Dimensions:
Installation:
Long-term stability:
Permissible air humidity:
Protection class:
Protection type:
Standards:
Features:
ACCESSORIES
®
RFTF - Modbus
® RFTF - Modbus with Modbus connection, in an elegant plastic housing (Baldur 2) with snap-on lid,
24 V AC (± 20 %) and 15...36 V DC
< 1.0 W ⁄ 24 V DC; < 2.2 VA ⁄ 24 V AC
Digital humidity sensor with integrated temperature sensor,
low hysteresis, high long-term stability
SI (default) or Imperial (switchable via Modbus)
Temperature [°C] [°F], relative humidity [% RH], absolute humidity [g/m
dew point [°C] [°F], mixture ratio [g/kg] [gr/lb], enthalpy [kJ/kg] [Btu/lb],
setpoint potentiometer, rotary switch and presence button
0...100 % RH (humidity)
0...+ 50 °C / +32...+122 °F (temperature)
typically ± 2.0 % (20...80 % RH) at +25 °C / +77 °F, otherwise ± 3.0 %
typically ± 0.2 K at +25 °C / ± 0.4 °F at +77 °F
± 10 % RH (humidity)
± 10 °C / ± 18 °F (temperature)
adjustable using potentiometer
storage –35...+85 °C / – 31...+185 °F; operation 0...+50 °C / +32...+122 °F
clean air and non-aggressive, non-combustible gases
Modbus (RTU mode), address range 0...247 selectable
9600, 19200, 38400 Baud
4 s / 32 s
2
0.2 - 1.5 mm / 24 - 16 AWG, via terminal screws
plastic, material ABS,
colour pure white (similar to RAL 9010)
98 x 98 x 33 mm / 3.86 x 3.86 x 1.30 in (Baldur 2)
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
± 1 % per year
< 95 % RH, non-precipitating air
III (according to EN 60 730)
IP 30 (according to EN 60 529)
CE conformity according to EMC Directive 2014 ⁄ 30 ⁄ EU, according to EN 61 326
Display with illumination, two-line, programmable,
cutout approx. 36 x 15 mm / 1.4 x 0.6 in (W x H),
to display actual humidity and temperature
or a selectable parameter
or an individually programmable display value
LEDs ( colour-programmable)
see table
17
Rev. Data - V25
3 3
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