Amprobe CO2-200 CO2-Meter - Manual (Page 11)

5
Alarm Output
The meter features visible and audible alarm to give
warnings when CO2 concentration exceeds the limit.
Users can set up 2 limits: An upper limit for alarm
threshold that requires air conditioning and a lower limit
to stop the alarm. (See P1.0 in setup for setting alarm
limits).
It emits beeps(Abt.80dB) with blinking LED when CO2
level goes over the upper limit. Beeps can be stopped
by pressing any key or automatically stops when
CO2 reading falls below lower limit. If the beeper is
temporarily shut, it will sound again when readings
fall below lower limit and then go over the upper limit
again, or users press “RESET” for more than 1 second
to activate it. LED alarm keeps blinking when beeps are
manually shut. It stops only when readings fall under the
lower limit.
The meter is designed with a relay to send output
for further connection. When CO2 readings go over
the upper limit and cause alarming. The relay picks up
automatically and sends output. It can be connected to
a ventilation system or activator for conditioning the air
quality. The relay will drop out when CO2 readings fall
under the lower limit.
Setup
The advanced setup mode lets you customize your meter.
3 types parameters are available.
P1.0: CO2 Alarm
P3.0: Temperature unit
P4.0: ABC selection
P1.0 CO2 alarm: upper & lower limits
Hold down “SET” under normal mode for more than 1
sec to enter set up mode. To exit setup, press “CAL/ESC”
in P1.0, P3.0, or P4.0.