4 CO200-EU-EN-V1.1-11/11
3
RELAY OUTPUT
The meter is designed with a relay for connection to an external indicating or controlling
device. When CO
2
readings go over the upper limit the relay closes. The relay will open
again when CO
2
readings fall below the lower limit. The relay output port requires a 2.5mm
STEREO phone jack plug. The relay is: 1A 30VDC/0.5A 125VAC.
1. AC adaptor input (5VDC)
2. Alarm Relay output
3. Phone plug wiring
SETUP
(Alarm level, Temperature scale, Real Time clock)
Hold the SET button, in the normal mode, for more than 1 second to enter the setup mode.
P1.
1
CO
2
ALARM: GOOD LEVEL
When entering the setup mode, P1.
0
and “CO2” are displayed on the LCD. Press the SET
button again to go into P1.
1
for setting the CO
2
upper limit for the GOOD level. The current
set value will be blinking on the display.
Press the
▲
or MIN/MAX
▼
button to increase or decrease the value. Each press adjusts in
100ppm increments. The alarm range is 0 to 700ppm.
When the value has been set, press the SET button to confirm the GOOD limit and to
proceed to P1.
2
for setting the upper NORMAL limit. Press the ESC button to exit without
saving the setting.
P1.
2
CO
2
ALARM: NORMAL LEVEL
P1.
2
is used for setting the CO
2
upper limit for the NORMAL level. The current
set value
will be blinking on the display.
Press the
▲
or MIN/MAX
▼
button to increase or decrease the value. Each press adjusts in
100ppm increments. The alarm range is 700 to 1000ppm.
When the value has been set, press the SET button to confirm the NORMAL limit and to
proceed to P1.
3
for setting the upper POOR limit. Press the ESC button to exit without
saving the setting.
