4. Specifications
Accuracy
5%±10PPM
Measurement Resolution
1PPM
Data update
2 times/second
Fast sampling Time
2 times/second
Response Time
﹤
30S
Zero Drift
﹤
5PPM
Repeatability
±2%
Long-time stability
＜
5%/year
Operating Conditions
-20~50
℃
; 15% ~90%RH
Storage Conditions
-30~50
℃
; 0%~80%RH
Audible Alarm
≧
35PPM and
≧
200PPM
Auto zero
√
Backlight
auto shut off after 30 secs of inactivity
Auto power off
after 15 minutes of inactivity
Typical sensor life
About 5 year
5. Meter Description
○
1 CO sensor
○
2 MODE/MAX/DATA hold button
○
3 LCD display
○
4 Power/Backlight button
○
5 Tripod nut
○
6 Battery cover
6. LCD Display Description
①
“
” battery icon: When the low battery icon "
" appears, replace the meter's battery;
②
“Hi” icon: when the measurement reading is over 200PPM, this icon appears along with
continuous audible alarm.
③
“Lo” icon: when the measurement reading is between 35PPM and 200PPM, this icon appears
along with discontinuous audible alarm.
④
“CO”: carbon monoxide icon
⑤
“PPM”: carbon monoxide unit
⑥
Measurement reading display
⑦
MAX icon
⑧
HOLD icon
7. Operation Instruction
a.
Open battery cover and install a 9-volt battery in the battery compartment.
b.
Power ON: Turn the meter on by pressing "
" button. Hold the meter and point the sensor to
the site to be measured, the measurement reading will be displayed on the LCD. If the reading is
above 35PPM, the audible alarm will be heard.
c.
Backlit: After turning the meter on, momentarily press "
" button, the backlit will be on/off.
d.
HOLD/MAX function: Press "MODE" button once, the "HOLD" icon will appear on the LCD,
which indicates the data is freezed. Press the button again to exit the HOLD mode and enter into
MAX mode to view the current MAX reading, the "MAX" icon appears on the LCD. Press the
button once more to return to the normal measurement.
e.
Power OFF: Turn the meter off by pressing and holding "
" button for approx. 3 seconds
until the LCD is switched off, then loose the button. The meter will automatically power off after
15 minutes of inactivity.
8. Accessories
①
User's manual
②
9V battery
www.htcinstrument.com
