INTRODUCTION
Features:
Triple displays of CO level, temp.
2
and humidity (7755/77535).
s
asy
calibration
humidity
PC connect
Stable NDIR sensor for CO detection
2
Statistics of weighted average
TWA (8 hours weighted average)
STEL(15 minutes weighted average)
Backlight for working in dark area
Audile CO warning alarm
2
Battery and adaptor power supply
E
manual
on CO and
2
(RH for 7755/77535 only)
via RS232 interface
1
Thank you for purchasing this portable
CO me ter. The me ter me asures CO
2
2
level, air temp ., dew point, wet bulb temp .
and humi dity(DP, WB , RH are for mo dels
7755/77535) and is an ideal instrume nt
for indoor air quality (IAQ) diagnosis.
Poor indoor air quality is considered
unhealthy because it causes tiredness,
loss of ability to concentrate, and even
illness(ex. Sick Building Syndrome ). IAQ
mo nitoring and survey, especially on CO
2
level and air ventilation become widely
applied in public areas such as offices,
classrooms , factories, hospitals and
hotels. It is also suggested in regulations
of industrial hygiene in some countries.
(Appendix)
The portable CO me ter uses NDIR (non-
2
dispersive infrared) technology to ensure
the reliability and long term stability. It’s
useful in verifying HVAC system perform-
ance and air ventilation control.
Содержание AZ 77535
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