Carbon Dioxide Monitor
Assessment of Indoor Air Quality
Features
- Two-channel infrared sensor
• Second reference beam allows for compensation of environmental and disturbing influences
• No user calibration needed
- Narrow CO2 probe allows measuring in fresh air and exhaust
air channels
- Uses reliable infrared absorption principle
• Physical measuring technique does not display cross sensitivity
to other gases
- Long-term sensor stability
- Wide measuring range; highly accurate
• 0 to 9999 ppm (0 to 1 Vol.
% CO2)
- Completely reliable
- Short-term and long-term monitoring
- Simple and economical
• Suitable for schools and commercial buildings
Applications
- Testing stationary CO2 transmitters in demand controlled ventilating
systems (DCVs)
- Measuring the CO2 concentration in incoming and outgoing ducts
- Monitoring indoor air quality in open plan offices
- Providing quick readings wherever there is occupant distress
With its high correlation to Sick Building Syndrome (SBS), carbon
dioxide concentration is frequently used to evaluate indoor air quality
and ventilation. The reliable 535 Carbon Dioxide Monitor can be used
to quickly and accurately assess carbon dioxide concentration levels
on both a short-term and long-term basis. Easy to use and lightweight,
the 535 monitor is completely portable. Its simple keypad makes it
easy to operate in any setting. No user calibration is needed due
to the monitor’s highly stable sensor. An optional protective
case, wall mounting holder, carrying holder, and an infrared printer
for documentation are all available separately.
Carbon Dioxide & IAQ
Elevated CO2 levels can cause occupants to complain of
room stuffiness or a stale air smell. This means there is inadequate
ventilation.
Improper ventilation also promotes the build-up of other chemical
and biological contaminants that can cause health effects in occupants.
A method for evaluating IAQ is continuous CO2 monitoring
using a datalogging instrument. Supplement CO2 monitoring with
measurements of temperature, relative humidity, airflow movement,
and airflow
volume. For more information on products to sample these parameters,
request Publication Nos. 1551, 1550, and 1549.
Performance Profile
|
Sensor: |
Two-channel infrared absorption principle |
Measuring Range: |
0 to 9,999 ppm CO2 (0 to 1 vol. % CO2) |
Accuracy: |
0 to 5000 ppm: ± 50 ppm +2% of m.v.
5000 to 9,999 ppm: ± 100 ppm + 3% of m.v. |
Resolution: |
1 ppm or 0.001 vol. % |
Operating Temp.: |
32 to +122 F |
Storage Temp.: |
-4 to +160 F |
Battery Life: |
>6 h (9 V block Al-Mn) |
Switchover: |
ppm/vol% |
Display: |
LCD, 0.5-inch digit height |
Housing: |
ABS |
Dimensions: |
7 x 2.25 x 2 inches (19 x 5.7 x 5.1 cm) |
Weight: |
11 oz (312 g) |
Ordering Information
| Description |
Cat. No. |
| 535 Carbon Dioxide Monitor, includes attached probe,
9V batteries, ISO calibration certificate, and instruction manual |
751-535 |
| Accessories |
| TopSafe Case for 535 CO2 Monitor, rugged
protective case with bench stand and belt clip |
751-0183 |
| Power Supply for 535 CO2 Monitor, AC plug-in
power supply for long-term measurements, 120V |
751-537 |
Infrared Printer, prints date, time, and meter serial
number without cables
Can also be used with the 315
CO Monitor and the 545 Light Meter.
For more information on these indoor environment monitors,
request publications 1552 and 1554. |
751-540 |
Download Carbon
Dioxide Monitor Product Data Bulletin (PDF)
This page was last modified May 1, 2007
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