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Thermokon · Room sensor · Modbus
RDF-IR RS485 Modbus
Ceiling infrared sensor that measures surface temperature over an 80 degree area, with RS485 Modbus, in single or dual versions.
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Part number774789
Datasheet, PDF
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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, RS485, 9600 to 57600 baud
- Interface
- RS485 Modbus
- Connection
- Plug-in terminal, max. 2.5 mm², bus max. 1.5 mm², M25 cable entry, 2 x RJ45 socket
Electrical
- Power supply
- 15 to 35 V DC or 19 to 29 V AC (SELV)
- Power consumption
- Typ. 0.6 W (24 V DC), 1.5 VA (24 V AC)
Environment
- Operating temperature
- -20 to +70 °C
- Humidity
- Max. 85% rH, short term condensation
- Protection
- IP30 IP rating
Performance
- Sensor element
- PIR (passive infrared), 80 ±5 degree aperture
- Measuring range
- Output scaling 0 to +50 °C by default, selectable from 4 ranges
- Accuracy
- ±0.5 K (typ. at 21 °C), ±1.5 K above 7 m mounting height
Physical
- Cable length
- 1.5 m RJ45 patch cable (2 x 1.5 m on the dual version)
- Housing material
- PC, USE-M housing
- Colour
- Pure white
From the manufacturer's datasheet for RDF-IR RS485 Modbus.
Overview
The RDF-IR is flush-mounted in the ceiling and measures an averaged surface temperature over a circular detection area, with an optical aperture of 80 ±5 degrees. It suits offices and workplaces. The remote sensor connects to the USE-M housing with a standard RJ45 patch cable, 1.5 m on these versions. The dual version takes two sensors and can give the mean, minimum or maximum of both, set in the USEapp. It reports over RS485 Modbus RTU.