A robust and accurate portable gas detector, the Personal Surveyor (PS200 Series) provides unrivalled protection in confined space applications with audible and visual alarms in the event of exposure to flammable or toxic gases. Detecting and displaying up to 4 gases simultaneously, PS200 is suitable for a host of applications in a variety of industries. The PS200 can be configured to detect a combination of Methane, Oxygen, Carbon Monoxide, Hydrogen Sulphide, as well as other flammable gases. Pre-entry checking can be carried out with the optional internal sampling pump, and diffusion operation ensuring maximum battery life in confined spaces.

Key Features:

  • Simple 1-button operation
  • Measures up to 4 gases:
  • CH4 – Methane (LEL)
  • O2 – Oxygen
  • CO – Carbon Monoxide
  • H2S – Hydrogen Sulphide
  • Other flammable gases, available on request
  • Audible, visual and vibrating alarms
  • Internal pump (optional)
  • Lightweight yet robust construction
  • Sensor integrity checking
  • Ease of maintenance


  • Personal safety in confined space – CH4/O2/CO/H2S hazards
  • General safety in confined space
  • Shipping – general
  • Shipping – fumigant
  • Breweries
  • Plant shutdown
  • Permit to work systems
  • Pressurised tunnelling
  • Fleet auxiliary

PS200 calibration guide

MANUAL CALIBRATION allows you to calibrate using any cal gas values. Apply the gas and then adjust the values of the sensors to match. To manual calibrate:

  1. Turn on
  2. Wait for countdown screen to start
  3. Immediately press left right left right
  4. Wait for countdown to complete
  5. Go to calibrate
  6. Code 333
  7. Power to zero
  8. Go to user set
  9. Turn the knob on the 0.5 lpm fixed flow regulator to calibrate
  10. Use left button to alter when stabilized, use right button to accept
Sensor Type Calibration Gas Value Low Alarm High Alarm TWA Alarm STEL Alarm Part Number
H2S - Hydrogen Sulfide 25ppm 10ppm 20ppm 10ppm 15ppm 630-64067DD
CO - Carbon Monoxide 100ppm 35ppm 70ppm 35ppm 200ppm 630-64067DD
LEL - Methane Curve 25% LEL 10% LEL 20% LEL N/A N/A 630-66825
O2 - Oxygen 18% VOL 19.5% VOL 23.5% VOL N/A N/A 630-64066