Measuring transducer of humidity and temperature MB-AHT-1

Reference: MAX-MB-AHT-1, EAN13: 5908312599562

Product description

With Modbus RTU output.
The MB-AHT-1 transducer is used for continuous measurement of temperature in the range -40÷70°C and humidity in the range 0÷100% RH. Data exchange is carried out via the RS-485 port in accordance with the Modbus RTU protocol.

Features
* humidity measurement
* temperature measurement
* readout of the current temperature
* sensor operating status

Functioning
The module continuously measures via the built-in sensor. Readout of recorded values, setting of all measurement, communication and data exchange parameters are all carried out via the RS-485 port using the Modbus RTU communication protocol.
The module has a heater designed to dry the surface of the measuring sensor. This prevents the condensation of moisture that may interfere with the measurement result. This feature is optional and can be switched on via register 512. In switch-on mode, the heater is started automatically when the humidity rises above 97%. The operation of the heater can affect the correctness of the measurement, therefore during its operation the measurements are blocked (the transducer displays values from before the heater was switched on). Approximate heating cycle: operation - 1s / stop - 5s.

Power supply voltage	9÷30 V DC
Measurement range	0÷100% RH / -40÷70°С
ports	RS-485
Communication protocol	MODBUS RTU
The type of work	SLAVE
Baudrate	1200÷115200 bit/s
Data bits	8
Stop bits	1 / 1.5 / 2
Bits of parity	EVEN / ODD / NONE
Address	1÷247
Power consumption (max)	40 mA
Maximum temperature measurement error	±1°C
Maximum humidity measurement error	±4,5% (0÷80RH); ±6,0% (80÷100RH)
Terminal	pluggable terminal blocks 2,5 mm²
Tightening torque	0,4 Nm
Power consumption	0,3 W
Working temperature	-40÷70°С
Dimensions	42 mm x 63 mm x 30 mm
Assembly	on wall
Ingress Protection Marking	IP65 - hermetic