pSense portable CO2 meter

Portable Carbon Dioxide DetectorPART NUMBERS:

ESAZ-01 (standard model)

ESAZ-02 (high accuracy model)


  • The most popular portable CO2 meter available
  • CO2, Temperature, Humidity
  • Save Money – Calibrate Outdoors
  • Optional In-built data logger


related products

Portable CO2 MeterWith up to 24 hours battery life and easy to use with gloves on, the pSense-Plus portable carbon dioxide meter works perfectly as a personal safety alarm unit in hazardous environments, or wherever carbon dioxide is produced, stored, generated and used.

The large LCD readout gives a quick overview of the current carbon dioxide level and the 80 dB audible alarm calls for prompt attention when the short-term exposure safety limit is exceeded.

This air quality CO2 meter data logger calculates statistical weighted averages of TWA (8 hour time weighted average) and STEL (15 minute short term exposure limit).


feature specification
Measurement Principle NDIR (Non-Dispersive Infra-Red)
Measurement Range 0 to 1 % | 0 to 10,000 ppm
Measurement Accuracy +/- 30 ppm for ESAZ-02 | +/- 75 ppm for ESAZ-01
Response Time (T90) < 30 seconds
Power Supply 4 x AA batteries | Mains power supply
Warm-up Time 30 seconds
Alarm Audible @ 80 dB
Compliance with EMC Directive 89/336/EEC
Operating Environment 0 to +50 °C | 0 to 95 % RH (non-condensing)
Storage Environment 0 to +60 °C | 0 to 95 % RH (non-condensing)
Calibration Manual calibration with fresh air
Unit Size 209.4 x 70 x 57.7 mm
Unit Weight 200 g
Housing Material ABS / PC blend
Data Logging? Yes, contact us for details



  • keepalert CO2 meter120/220VAC adapter (power for long-term operation)
  • International Wall adapter kit
  • 4 AA Batteries
  • ABS Plastic case
  • Manual


optional in-built data logger kit

The data logger kit for Windows PC is perfect for students, scientists, researchers, or anyone who needs to record CO2 levels over time. Each reading (user-selected frequency) includes a date/time stamp for accurate analysis. Use the kit to record CO2 and temperature levels for an hour, a day, or even a month. Data can be viewed on screen or saved to an ASCII text data file that easily imports into a spreadsheet.

  • USB Data Cable
  • Software CD
  • Requires PC running Win2K/XP/Vista/7/8/8.1 with USB Port
  • Must be plugged into PC to log data


  • 1 year


manual and specification sheet

Download pSense Spec Sheet

Download pSense Manual