Duomo Vent Check Pro Manual - Page 3

Browse online or download pdf Manual for Measuring Instruments Duomo Vent Check Pro. Duomo Vent Check Pro 8 pages. Co + co2

OSHA: 5000ppm
Time weighted average over five 8-hour work days
should not exceed 5000ppm.
NIOSH recommendations:
250 - 350ppm
Normal outdoor ambient concentrations.
600ppm
Minimal air quality complaints.
1000ppm
Indicates adequate ventilation; complaints such as
headaches, fatigue and eye/throat irritation will be more
widespread. 1000ppm should be used as an upper limit
for indoor levels.
CO Levels & Guidelines
ppm
Symptoms and applicable standard
0 - 1
Normal background levels
Maximum indoor air quality level:
Maximum allowable concentraion per
9
ASHRAE Residential standards 62-1989 for
Maximum limit 8 hrs of continuous
25
exposure per California OSHA workplace
Maximum 8 hrs average exposure level per
35
US OSHA workplace standards
Maximum concentration for continuous
50
exposure in any 8 hrs average level per
Remove employees from enclosed space if
100
the CO concentration exceeds 100ppm per
OSHA exposure limit
Mild headache, fatigue, nausea and
200
dizziness within 2 - 3 hrs
Frontal headache, life threatening after 3
400
hrs. Maximum concentration in flue gas per
the US EPA and AGA standards
Dizziness, nausea, convulsions, death within
800
1600
Nausea within 20 min., death within 2 - 3 hrs
w: www.duomo.co.uk
-
living area
standards
OSHA standards
2 - 3 hrs
e: sales@duomo.co.uk

Specification

CO
2
Range of 0 - 9999
Accuracy ± 30ppm ±5% of reading
Response time <30 seconds
CO
Range of 0 - 1000ppm
Accuracy: ± 10ppm at <100ppm
Response time <60 seconds
Temperature
Range of -20 - 60 ºC (-5 - 140 ºF)
Accuracy
Response time <2 minutes
Warm Up
30 seconds
Operating Ranges
From 0 ~ 50
Storage
From -20 ~ 60
Power
4 pcs AA batteries (rechargeable option), DC Adaptor
Battery Life
> 10 hours (Alkaline)

Troubleshooting

Can't power on
Press button 1 for more than 0.3 seconds and try
again. Check whether batteries are in good contact
and correct polarity is observed.
Fixed readings
Check whether data hold function was activated.
Slow response
Check whether the air flow channels on the rear are
blocked.
Error messages
E01: CO
2
E02: The value is under range
E03: The value is over range
E04: The original data error results in this error
E07: Voltage to measure CO
use an adaptor
E17: Retry CO
E31: Temperature sensor damaged
-
t: 01905 797989
-
ppm
± 10% of reading for 101 - 500ppm
± 20% of reading for 501ppm and above
±
0.6ºC (0.9 ºF)
ºC , 0
~ 95% RH (avoid condensation)
ºC , 0
~ 99% RH (avoid condensation)
sensor damaged
. Replace batteries or
2
calibration
2
f: 01905 774296
|
© Duomo (UK) Ltd. 2007