SFK02+ RS485 Modbus

Immersion sensor for temperature measurement of gases and liquids in HVAC applications. The sensor can be optionally screwed directly into a bonded pocket (see accessories). Types SFKH02+ with a 70 mm neck pipe are designed for applications with insulation materials. The measuring insert can be exchanged without disassembling the entire sensor. Models with a relay output for a 2-point controller or a 2-stage 2-point controller and color-changing LCD allow for a wide range of applications. A hinged cover and tool-free wiring as well as removable cable entries ensure a quick and easy installation.

Application/type	Immersion sensor, Duct sensor
Purpose	Measure values
Measured values	temperature
Interface	RS485 Modbus, Active, 0..5 V, 0..10 V
Configuration	USEapp, uConfig, BUS, jumper, DIP switches
Sensor	SI-Protection against permeation of humidity and mechanical stress (e.g. vibration)
Output voltage	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)	-80..+260
Operating ranges temperature (°C)	-50..+120, -50..+150, -50..+160, -80..+260
Output signal temperature	scaling analogue output, 0..+160 °C (default setting), -20..+80 °C (default setting), selectable from 4 temperature ranges -50..+50 \| -20..+80 \| -15..+35 \| -10..+120 \| 0..+50 \| 0..+100 \| 0..+160 \| 0..+250 °C, optionally configurable
Operating range temperature enclosure (°C)	-30..+70, -20..+70
Operating range humidity	max. 85% rH short term condensation
Accuracy temperature	±0,5 K (typ. at 21 °C), within default measuring range, offset setting via app or uConfig
Power supply	15..35 V = SELV, 19..29 V ~ SELV
Power consumption	max. 2,5 W (24 V =), 4,3 VA (24 V ~)
Material in touch with media	Sensor probe, Ø=8 mm, stainless steel V4A (1.4571), G1/2", Neck pipe, (optionally), stainless steel V2A (1.4305), Ø=12 mm, length 70 mm, suitable for usage in aggressive media
Installation length (mm)	50, 100, 150, 200, 250, 450
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 set (screws and accessories)
Gefahrgut	No