Nov. 18
Automatikprodukter
Nitrogen Dioxide, NO
2
Gas Detector - Analogue, Modbus
4
db_nitrogen_transmitter_uk.indd
RNO2
Process
LED mode
Sensor heating period
Blinking 0.5 Hz (50% on, 50% off)
Sensor absence or
malfunction
Blinking 0.5 Hz (90% off, 10% on)
Modbus response
The signal is modulated with short
on-off pulses, even single Modbus cycle
is traceable*
Normal measurement
Continuous light
Step 4:
Make sure that the transmitter is properly fixed, the external
devices connected, power on and control LED is constantly lit.
Place the lid back and fix it with the screws.
The device is ready to use.
It is recommended to keep the device on constantly, except for
periods of maintenance and calibration, deplacement etc.
Sensor probe handling
The wall mount version of the transmitter is available with remote
probe (see drawing below for dimensions).
The remote probe is connected to the main unit with shielded cable.
Default connection cable length is 3 m.The sensor probes of all types
are equipped with a hydrophobic microporous PTFE filter to protect
the sensor from dust, dirt and water drops.
The filter may be replaced if it gets strongly contaminated.
To replace the PTFE filter, unscrew the M25 nut and remove the old
filter. Place a new filter into the nut and tighten it again.
NB!
Never stab or press the filter near its centre where the sensor is
located since this may damage the sensor.
The recommended orientation of sensor probe is vertical with the
sensor tip pointing downwards. This prevents possible accumulation
of condensed water on the sensor protection filter.
The horizontal orientation is also suitable. Avoid upward position of
the sensor tip.
35
80
27
36
�34max
3
120
o
�65
77
�35...36
�50
Hole
Configuring
Gas transmitters RNO2 share all functionalities of the
multifunctional transmitter platform.
The features and options include:
-
digital output change rate limiting filter
-
digital integrating (averaging) filter
-
temperature measurement channel with internal sensor
-
free assignment of each analog output to chosen parameter
-
flexible setting of analog output scales for each output
-
output shift and slope adjustment for calibration
-
Modbus controlled forced state option for analog outputs.
RNO2 can be configured through its RS485 interface by Modbus
RTU commands.
A standard configuration kit includes Model E1087 USB-EIA485
converter and a software pack.
Please contact your seller or the manufacturer for more
information.
Return to default settings
To reset the device’s Slave ID, baudrate and sbit number to fac
-
tory settings, proceed as follows:
1. De-energize the device
2. Connect the J3 jumper
3. Turn on the device
4. De-energize the device
5. Disconnect the J3 jumper
6. Turn on the device
For RS485 communication interface,
see Annex 1
