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HYGRASGARD® AFTF - Modbus - T3

On-wall- humidity- and temperature sensors HYGRASGARD® AFTF - Modbus - T3

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201,05 €
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Product group: WG01
On-wall- humidity- and temperature sensors HYGRASGARD® AFTF - Modbus - T3
Calibratable HYGRASGARD® AFTF - Modbus - T3 outside humidity and temperature transmitter with Modbus connection, in an impact resistant plastic housing with quick-locking screws, optionally with/without display, with a plastic sinter filter (exchangeable).

The sensor device serves to detect various parametres in humidity measurement. It measures the relative humidity (0...100% r.H.) and the temperature (– 35...+80 °C) of the ambient air. These measurands are used to internally calculate the following parametres that can be retrieved via Modbus: relative humidity [% r.H.], absolute humidity [g/m³], mixture ratio [g/kg], dew point temperature [°C], enthalpy [kJ kg] (ignoring atmospheric air pressure) and ambient temperature [°C]. A long-term stable, digital sensor guarantees precise measuring results.

The on-wall measuring transducer is applied in non-aggressive, dust-free environment. It is used in refrigeration, air conditioning and cleanroom engineering, engineering rooms, hotels and conference facilities.
Innovative Modbus sensor device with galvanically separated RS485 interface, selectable bus termination resistance, DIP switches for setting the bus parametres and bus address in current-free state, LEDs for telegram status display, two separate push-in terminals and large back-lit three-line display with customised programming in the 7-segment and dot-matrix ranges. The sensor is factory-calibrated and can be fine-tuned to ambient conditions by an expert.
Technical details
Voltage supply
24 V AC (± 20 %) and
15…36 V DC
Power consumption
< 1.2 W/ 24 V DC; < 1.8 VA/ 24 V AC
Data points
Temperature [°C], relative humidity [% r. h.],
dew point [°C], absolute humidity [g/ m3],
mixture ratio [g/ kg], enthalpy [kJ/ kg]
Deviation of humidity
typical ± 2.0 % r. H. (20…80 % r. H. ); at + 25 °C, otherwise ± 3.0 % r. H.
Temperature deviation
typically ± 0.4 K at +25 °C
Sensor
digital humidity sensor
with integrated temperature sensor,
low hysteresis, high long-term stability
Sensor protection
plastic sinter filter, Ø 14 mm, L = 25 mm, exchangeable
Measuring range
0...100 % r.H. (humidity)
– 35...+80 °C (temperature)
Zero point offset
± 10 % r.H. (humidity)
± 5 °C (temperature)
Ambient temperature
–30...+70 °C
Medium
clean air and
non-aggressive, non-combustible gases
Bus protocol
Modbus (RTU mode),
address range 0...247 selectable
Process connection
by screws
Electrical connection
0.2 - 1.5 mm², via push-in terminal
Cable connection
cable gland, plastic
(2x M 20 x 1.5; with strain relief, exchangeable,
inner diameter 8 - 13 mm) or
M12 connector according to DIN EN 61076-2-101
(optional on request)
Cable gland
2x M 20 x 1.5; with strain relief, exchangeable,
inner diameter 8 - 13 mm
Long-term stability
± 1 %/ year
Permissible air humidity
< 95 % r. H., non-precipitating air
Protection class
III (according to EN 60 730)
Protection type
IP 65 (according to EN 60 529)*
Standards
CE conformity,
electromagnetic compatibility according to EN 61326,
according to EMC Directive 2014/ 30/ EU