Extech CO200 Indoor Air Quality Monitor, Desktop

Features:

* Checks for Carbon Dioxide (CO2) concentrations with Max/Min value recall function
* Maintenance free NDIR (non-dispersive infrared) CO2 sensor
* Indoor Air Quality displayed in ppm with Good (380 to 420ppm), Normal (<1000ppm), Poor (>1000ppm) indication
* Visible and Audible CO2 warning alarm with relay output for ventilation control
* Measurement ranges:
o CO2: 0 to 9,999ppm
o Temperature: -4 to 140°F (-10 to 60°C)
o Humidity: 0.1 to 99.9%RH
* Displays Year, Month, Date, and Time
* Automatic Baseline Calibration (minimum CO2 level over 7.5 days) or manual calibration in fresh air

Features:

* Checks for Carbon Dioxide (CO2) concentrations
* Calculates statistical weighted averages of TWA (8 hour time weighted average) and STEL (15 minute short term exposure limit)
* Maintenance free NDIR (non-dispersive infrared) CO2 sensor
* Measurement ranges:
o CO2: 0 to 5,000ppm
o Temperature: -14 to 140°F (-10 to 60°C)
o Humidity: 0.0 to 99.9%
* User programmable audible alarm
* Backlit triple LCD display
* Built-in RS-232 interface for capturing readings on PC
* Data acquisition software and cable included to record and document CO2, Humidity and Temperature data
* Optional 33% and 75% RH calibration bottles
* Complete with software and cable, 4 AA batteries, and carrying case

EzFlex™ Thermo-Anemometer  EZ30

Air Velocity Meter with flexible gooseneck probe

- Remote vane extends on 16" (406mm) goosneck for easy access into hard to reach places
- Selectable air velocity units of ft/min, m/s, km/hr, MPH, and Knots
- Ideal when reaching into air duct or other HVAC applications
- 3% basic accuracy
- Type K sensor for temperature measurements
- Large easy to read 2000 count LCD display
- Data hold function allows user to freeze the displayed value
- Max Hold retains highest reading in the display
- Auto power off and low battery indication
- Complete with battery and hard carrying case

IAQ Indoor Air Quality Meter/Datalogger EA80

FEATURES:

- Checks for Carbon Dioxide (CO2) concentrations
- Maintenance free dual wavelength NDIR (non-dispersive infrared) CO2 sensor
- Measurement range:
CO2: 0 to 6,000ppm
Temperature: -4 to 140ºF (-20 to 60ºC)
Humidity: 10 to 95%RH
- Continuous (20,000 sets) or Manual (99 sets) datalogging
- Complete with (6) AAA batteries, RS-232 cable, and Windows® 95/98/NT/2000/ME/XP compatible software