AFTF RS485

exterior humidity and temperature sensor with RS485 output

Application
The AFTF RS485 with or without display is a humidity/temperature sensor whose signal communicates via RS485 and by means of Modbus®-RTU. Which measures the relative and absolute humidity and the temperature of the air as well as other non-aggressive gases. It is used in refrigeration, air conditioning and clean room technology, in greenhouses and halls. The housings are suitable for wall mounting.

Technical Data

plus sensor tube Ø 18x40mm and PGs
Power supply:24V DC ± 20%
Power consumption idle:5mA
Bus protocol:RS485 Modbus®-RTU
Configuration option:via Dip switches
(address number, parity, baud)
Address number:1 to 63 (0 not allowed)
Parity mode for Modbus:no parity, even parity, odd parity
Transmission rate:4800, 9600, 19200, 38400 Baud
Temperature
measuring range:
MB: -30...+80 °C, resolution 0.1 °C,
Measuring error ± 0.3 °C
Measuring range
relative humidity:
MB: 0...100% rH, working range 20...95% rH
Resolution 1%, measuring error at 20...80% ±3
Measuring range
absolute humidity::
0.1gr/m³
Ambient temperature:-30°C...+60°C
Humidity:< 95 % rH, non-condensing air
Connection head:ABS/ PC,
colour pure white (similar to RAL9010),
4 quick release screws
Dimensions:
Display (optional):LCD display
Cable gland:2 x M16, with strain relief
Electrical connection:0.14 - 1.5 mm²
via screw terminals on circuit board
Process connection:by means of screws
Protection class:III (according to EN 60 730)
Protection type:Housing IP 63 (according to IEC 529)
Standards:CE conformity
EMC guidelines:according to EN55011 class B)

AFTF RS485
with Display