www.Hydrofarm.com
2
INSTRUCTIONS
OVERVIEW
Thank you for selecng the APCEM desktop CO
2
monitor. It is smart, compact and easy to use. In
addion to measuring CO
2
concentraon, the APCEM can also measure ambient temperature and
relave humidity. This product was developed to detect the presence of CO
2
in ambient air. The
APCEM can be used in greenhouses, grow rooms and other places where CO
2
should be monitored to
assure that plants grow well.
FEATURES
• The built-in data logger can store 48 sets of CO
2
, temperature, and RH readings in the past 24
hours (one log per 30 minutes).
• Max/Min Mode records the maximum and minimum concentrations of CO
2
since the device has
been last turned on.
• RCFS Mode can recover the original factory settings after the CO
2
device has been recalibrated,
altered, or damaged.
1. Enter Buon 4. Mode Buon 7. Yellow LED Display (300-1300 ppm) 10. Power inlet
2. Down Buon 5. LCD display 8. Green LED Display (>1300 ppm) 11. RJ45 socket (only for factory use)
3. Up Buon 6. Red LED Display (<300 ppm) 9. Gas Entry Hole 12. Venlaon Slots
MODE FUNCTIONS
There are several modes which can be adjusted by user. These modes are ALTI Mode, OUTSIDE Mode,
CALI Mode, LOG Mode, MinMax Mode, and RcFS Mode.
ALTI
Compensates for pressure changes
with appropriate altude of
locaon when measured
OUTSIDE
Use this mode to modify the
outside CO
2
concentraon for
calculaon of the venlaon
rate
CALI
Calibrates the sensor when the
reading deviates from the actual
CO
2
concentraon
LOG
Shows the logged CO
2
,
Temperature and RH values
recorded in the past 24 hours
MaxMin
Shows the maximum and
minimum CO
2
reading before being
cleared or aer Power On
RcFS
Recovers the factory sengs
and purges customized
sengs
MUTE
The beep alarm can be set on/off
under Mute Mode
ALARM 1
For setting the user-
adjustable first alarm level