www.sentera.eu
MIW-FCMFX-R-EN-000 - 29 / 05 / 2021
9 - 10
FCMFX-R
INTELLIGENT CO
2
SENSOR
ATTENTION
Do not expose to direct sunlight!
OPERATING INSTRUCTIONS
ATTENTION
The unit is supplied with electrical energy at voltages high enough to inflict
personal injury or threat to health.
Calibration procedure:
Sensor calibration is not necessary. All sensor elements are calibrated and tested in
our factory.
In the unlikely event of CO
2
sensor element failure, this component can be replaced.
Firmware update
New functionalities and bug fixes are made available via a firmware update. In
case your device does not have the latest firmware installed, it can be updated.
SenteraWeb is the easiest way to update the firmware of the unit. In case you do not
have an internet gateway available, the firmware can be updated via the 3SM boot
application (part of the Sentera 3SMcenter software suite.
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
2
) is between the minimum and maximum alert range values (
Fig. 6
).
2.
When the yellow LED is on, the measured value (temperature, relative humidity
or CO
2
) is in the alert range (
Fig. 6
).
The yellow LED is blinking when the Modbus communication has stopped and
HR8 is activated (Modbus timeout > 0 seconds)
3.
When the red LED is on, the measured value (temperature, relative humidity or
CO
2
) is below the minimum measurement range value or above the maximum
value. Blinking red LED indicates loss of communication with a sensor (
Fig. 6
).
Fig. 6 LED indications
3
2
1
NOTE
When the sensor is in bootloader mode, the green and yellow LEDs flash alternately.
During the firmware download, the red LED is flashing additionally.
NOTE
By default, the LED indication refers to CO
2
measurements. This can be changed
to temperature or relative humidity values via Modbus Holding Register 79 (see
Table Holding registers).
