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Air Volume Transmitters and Controllers | IML-M IML-M Volume Transmitter and Controller, Modbus

IML-M Volume Transmitter and Controller, Modbus

Datasheet (759kB)

IML is made for detecting and controlling air volumes in air handling units and room spaces. Air volumes will be calculated by using the differential pressure resulting from the flow of the air in the duct or in the fan.

The display is showing air volume or differential pressure , the desired variable that can be locked on the display. The variable will be selected in the menu during commissioning. The housing of the IML is made so that it can be used also in dusty and wet surroundings.

The efficiency of the fast changing pressures resulting from process problems can be eliminated by changing the time constant. Excellent accuracy of the measurement is guaranteed by the automatic zero point calibration.

IML-M offers Modbus RTU communication for connection to monitoring systems and to BMS solutions. The measurements can be read and the settings can be made via Modbus.

IML can be used as stand-alone volume controller, volume controller part of a BMS, as a Modbus pressure transmitter or a Modbus volume transmitter/controller.

IML Application Examples

IML Volume Control Application Examples

Power Supply: 22..28Vac/dc, max. 1.5VA @ 24Vac, max 1.0VA @ 24Vdc
Measurement Ranges: 0...1000Pa, 0...2000Pa, 0...5000Pa, 0...7000Pa
Selectable during the commissioning
Accuracy: ±1Pa or ±1% of reading Pa (25°C)
Outputs: 1: Air Volume (l/s, m3/h): 0...10Vdc, 2mA max
2: Diff Pressure or Control Output: 0...10Vdc, 2mA max
Time Constant: 1..20s (8s = factory default)
Temperature Drift: <0.1%/K of range, typical
Communication: Modbus RTU RS 485 Communication, 9.6/19.2/38.4/56 bps, 8 data bits, Parity None, 1 Stop Bit
Display: Display Showing Volume, Pressure and Setpoint
Protection Class: IP54
Dimensions: 115W x 115H x 45D mm