FTK+ RS485 Modbus

Duct sensor for measuring relative and absolute humidity, enthalpy, dew point and temperature in gaseous media of heating, ventilation and air-conditioning systems as well as clean rooms. The optional features, such as relay outputs for 2-point controllers or 2-stage 2-point controllers and color-changing LCD allow for a wide range of applications. The accuracy of the humidity sensor is 2%. A hinged cover and tool-free wiring as well as removable cable entries ensure a quick and easy installation.

Application/type	Duct sensor
Purpose	Measure values
Measured values	temperature, relative humidity, absolute humidity, enthalpy, dew point
Interface	RS485 Modbus, Active, 0..5 V, 0..10 V
On stock	No
Configuration	USEapp, uConfig, BUS, jumper, DIP switches
Output voltage	2x 0..10 V or 0..5 V, adjustable via jumper, live-zero configuration via app or uConfig, min. load 10 kΩ
Network technology	RS485 Modbus
Data transmission	RTU, half-duplex, baud rate 9.600, 19.200, 38.400 or 57.600, parity: none (2 stop bits), even or odd (1 stop bit)
Operating range temperature (°C)	-20..+70
Output signal temperature	scaling analogue output, -20..+80 °C (default setting), selectable from 4 temperature ranges -40..+60 \| 0..+50 \| -20..+80 \| -15..+35 °C, optionally configurable
Operating range humidity	max. 85% rH short term condensation
Accuracy temperature	±0,3 K (typ. at 21 °C), within default measuring range, offset setting via app or uConfig
Measuring range humidity	0..100% rH non-condensing, 0..85 KJ/kg enthalpy, 0..50 \| 0..80 g/m³ absolute humidity, 0..+50 \| -20..+80 °C dew point, optionally configurable
Accuracy humidity	±2% between 10..90% rH (typ. at 21 °C), offset setting via app or uConfig
Power supply	15..35 V = SELV, 19..29 V ~ SELV
Power consumption	typ. 0,4 W (24 V =), max. 2,5 W (24 V =), 0,8 VA (24 V ~), 4,3 VA (24 V ~)
Material in touch with media	Pipe, PA6, with filter stainless steel wire mesh, black, Ø=19,5 mm
Installation length (mm)	140, 270, 400
Display	LCD 29x35 mm, RGB backlight, with traffic light function, threshold values configurable, optionally configurable via app or uConfig
Enclosure	USE-M, impact- and shock-resistant enclosure with quick-release cover, PC
Colour	pure white, transparent cover
Protection (IP)	IP65, according to EN 60529
Connection	removable cable entry M25 with fourfold cable entry for wire with max. Ø=7 mm, removable plug-in terminal, max. 2,5 mm², BUS max. 1,5 mm²
Delivery content	incl. mounting flange, incl. mounting set (screws and accessories)
Notes	air speed max. 12 m/s
Gefahrgut	No