www.sentera.eu
MIW-RSCOH-R-EN-000 - 25 / 03 / 2020
9 - 10
NOTE
On a Modbus RTU network, two bus terminators (NBTs) need to be activated.
ATTENTION
t
Do not expose to direct sunlight!
NOTE
The sensor is not designed, manufactured or intended for use or re-sale as control
or monitoring equipment in environments requiring life safety performance, in
which the failure of the sensor could lead directly to death, personal injury, or
severe physical or environmental damage.
OPERATING INSTRUCTIONS
The unit is supplied with electrical energy at voltages high enough to inflict personal
injury or threat to health.
ATTENTION
Calibration procedure:
Sensor calibration is not necessary. All sensor elements are calibrated and tested in
our factory.
In the unlikely event of CO / NO
2
sensor element failure, this component can be
replaced.
Bootloader
Thanks to the bootloader functionality, the unit firmware can be updated via Modbus
RTU communication. With 3SM boot Application (part of 3SM center software
suite), ‘boot mode’ is automatically activated and the firmware can be updated.
NOTE
Make sure the power supply does not get interrupted during “bootload” procedure,
otherwise you risk losing unsaved data.
LED indications
1.
When the green LED is on, the measured value (temperature, relative
humidity or CO / NO
2
) is between the minimum and maximum alert range
values (
Fig. 5 - 1
).
2.
When the yellow LED is on, the measured value (temperature, relative
humidity or CO / NO
2
) is in the alert range (
Fig. 5 - 2
).
3.
When the red LED is on, the measured value (temperature, relative humidity
or CO / NO
2
) is below the minimum measurement range value or above the
maximum value. Blinking red LED indicates loss of communication with a
sensor (
Fig. 5 - 3
).
Fig. 5 LED indications
3
2
1
NOTE
By default, the LED indication refers to temperature measurements. This can be
changed to relative humidity or CO / NO
2
values via Modbus Holding Register 79
(see
Table
Holding registers).
RSCOH-R
MULTIFUNCTIONAL
ROOM TRANSMITTER
