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Thermokon · Immersion sensor · Modbus
SFK02+ Basic RS485 Modbus
Screw-in immersion temperature sensor with a stainless steel probe in six lengths and an RS485 Modbus RTU output.
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Part number747837
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- DHL, under 15 kg £13.50 ex VAT
- Technical support from the people who commission it
Specification
Communication
- Protocol
- Modbus RTU, half-duplex, RS485
- Interface
- RS485 Modbus, 9600, 19200, 38400 or 57600 baud, parity none (2 stop bits), even or odd (1 stop bit)
- Connection
- G1/2 inch; plug-in terminal max. 2.5 mm², M20 cable entry for cable 4.5 to 9 mm
Electrical
- Power supply
- 15 to 24 V DC (+/-10%) or 24 V AC (+/-10%)
- Power consumption
- typ. 0.7 W (24 V DC), 1.8 VA (24 V AC)
Environment
- Operating temperature
- Housing -30 to +70 °C or -20 to +70 °C
- Humidity
- max. 85% rH, short term condensation
- Protection
- IP65 IP rating
Performance
- Sensor element
- Stainless steel V4A (1.4571) probe, 8 mm diameter
- Measuring range
- Up to -80 to +260 °C, depending on version
- Accuracy
- +/-0.5 K, typical at 21 °C, within the default range
- Probe length
- 50, 100, 150, 200, 250 or 450 mm
Physical
- Housing material
- PC, USE-S housing
- Colour
- Pure white
Part numbers
From the manufacturer's datasheet for SFK02+ Basic RS485 Modbus.
Overview
The SFK02+ measures the temperature of liquids and gases in HVAC systems. It screws into a G1/2 inch thread, or directly into a bonded pocket. The measuring insert can be exchanged without taking the whole sensor apart. The Basic version reports temperature over RS485 Modbus RTU and is set up with DIP switches. The probe is 8 mm stainless steel in lengths of 50, 100, 150, 200, 250 and 450 mm. The USE-S housing has a hinged, quick-release cover, plug-in terminals and removable cable entries.