Overview
The PHG transmitter measures CO2 concentration in in-door atmospheres and
converts it into standard current or voltage signal. PHG model uses dual NDIR
carbon-dioxide sensor for better accuracy and sensitivity as well as low temperature
and humidity dependence. The transmitter can be equipped with local 4-digit LED
display and RS232 serial interface. PHG application area includes indoor air control,
ventilation, air-conditioning, mushroom control, etc.
Mounting
Free mounting
♦
Remove 2 protection plastic caps (1)
using a flat-screwdriver tip.
♦
Fix the unit using 4 M4 screws with
proper length through holes (2) to your
mounting construction or use the
supplied COMECO mounting
accessories.
♦
Return the protection caps to their
original places.
Duct mounting
♦
Place the supplied flange to duct wall
and mark 2~4 mounting holes.
♦
Drill on duct wall d4.5mm flange holes
and a d17mm central hole.
♦
Fix the flange (3) using 2~4 M4 screws
(4) with proper length.
♦
Place the transmitter inlet tube to the
desired process depth and front rotation.
Fix it with flange fixing screw (5).
Important notes:
♦
Do not try to open the enclosure.
It can damage the transmitter!
♦
Sintered filter significantly increases
the response time!
Wiring
♦
Check the pin numbers of the male
connector located on housing top or
bottom.
♦
Turn off power supply!
♦
Attach the female connector part wired
to your system as shown on the left.
♦
Turn the power supply on.
♦
If RS232 interface is installed:
- Baud Rate: 9600 bps
- Transmit Update: 2 s
- Transmit Frame:
1
2
3
4
5
6
CO2 value
CR
LF
- Example for CO
2
= 1000ppm:
1000 [13] [10]
(0x31, 0x30, 0x30, 0x30, 0x0D, 0x0A)
Waste Disposal
Do not dispose of
electronic devices
together with
household waste
material!
If disposed of within European Union,
this product should be treated
and recycled in accordance with the laws
of your jurisdiction implementing
the WEEE Directive 2002/96
on the Waste Electrical and Electronic
Equipment.
