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Thermokon · Immersion sensor · Modbus
SFK02+ RS485 Modbus
Immersion temperature sensor for gases and liquids with RS485 Modbus RTU, 0 to 10 V output and probe lengths from 50 to 450 mm.
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Part number665759
Datasheet, PDF
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- DHL, under 15 kg £13.50 ex VAT
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Specification
Communication
- Protocol
- Modbus RTU over RS485, half duplex
Electrical
- Power supply
- 15 to 35 V DC or 19 to 29 V AC, SELV
- Power consumption
- Max. 2.5 W (24 V DC), 4.3 VA (24 V AC)
Environment
- Operating temperature
- -30 to +70 °C enclosure
- Protection
- IP65 to EN 60529 IP rating
Performance
- Output signal
- 0 to 10 V or 0 to 5 V, min. load 10 kΩ
- Measuring range
- -80 to +260 °C at the probe; output scaling selectable, default 0 to +160 or -20 to +80 °C
- Accuracy
- ±0.5 K (typ. at 21 °C)
- Probe length
- 50, 100, 150, 200, 250 or 450 mm, by part
Physical
- Housing material
- PC, USE-M enclosure; probe stainless steel 1.4571, 8 mm, G1/2
- Colour
- Pure white with transparent cover
Part numbers
- 66574250 mm probe, no display
- 665759100 mm probe, no display
- 665766150 mm probe, no display
- 665773200 mm probe, no display
- 665780250 mm probe, no display
- 665797450 mm probe, no display
- 66580350 mm probe, LCD
- 665810100 mm probe, LCD
- 665827150 mm probe, LCD
- 665834200 mm probe, LCD
- 665841250 mm probe, LCD
- 665858450 mm probe, LCD
From the manufacturer's datasheet for SFK02+ RS485 Modbus.
Overview
The SFK02+ is an immersion sensor for measuring the temperature of gases and liquids in HVAC systems. It can be screwed into a bonded pocket (available as an accessory), and the measuring insert can be changed without removing the whole sensor. The SFKH02+ type with a 70 mm neck pipe is for insulated installations. This version connects to RS485 Modbus RTU and also has a 0 to 10 V or 0 to 5 V analogue output. LCD versions show the value with a colour changing traffic light function. It is configured with the USEapp or uConfig.