GMI PS 500

Key Features

  • Over 15 plug-and-play smart sensors to choose from
  • Wide range of VOC’s with 2 different PID sensors
  • Flexible configuration to suit your specification
  • Piercing 95 dB audible plus 360-degree high visibility light bar
  • On-board datalogging for calibration certificates, data management and event logging
  • High impact rubberised case
  • IP65
  • Low cost of ownership


The PS500 can be tailored to detect up to five gases with its toxic and catalytic sensors, photo ionisation detectors and infrared capabilities. ‘Plug and Play’ option allows the customer to ‘plug in’ a new board with a different gas range.

The PS500 is particularly useful in noisy environments, featuring a very loud (95dBA) penetrating and distinctive audible alarm together with high visibility large area visual alarm. Pump, diffusion or both together, allowing pumped sample for pre-entry checking and diffusion in confined space working, thus maximising battery life. A robust, moulded, rubberised casing guaranteeing Hi-Impact resistance, the PS500 can be used in the most demanding environments.


  • Personal safety in confined space – H2S/O2/CO hazards
  • General safety in confined space
  • Shipping – general
  • Shipping – fumigant
  • Breweries – CO2 hazard
  • Plant shutdown
  • Permit to work systems
  • Pressurised tunnelling
  • Fleet auxiliary


Measuring Ranges

CO 0 – 1000ppm
O2 0-25%
CO2 0 – 5% VOL
Dual Toxic
CO / H2S
0 – 1000ppm (CO)
0 – 100ppm (H2S)
H2 0 – 100ppm
LEL 0 – 100% LEL


**15 plug-and-play smart sensors to choose from (please refer to datasheet)**


Ex CertifiedUL_Logo_50x50 MED Certified CE Certified

IEC EEx iad IIC T3/T4
ATEX Ex II 2 G EEx iad IIC T3/T4
UL913 Class I, Div 1, Groups ABCD (excludes NDIR option)
MED (0038/YY) – Module B & E
CE  0518


Brilliant visual alarm
360° distinct alarm level
Ultra loud audible alarm, 95 dBA

Physical Properties

140 x 85 x 45 mm
0.4 kg


0 – 95% RH non-condensing

Power Supply

Alkaline (3 AA):
12 hours’ minimum with pump
Rechargeable (NiMH):
12 hours’ minimum with pump


High impact rubberised polycarbonate case

IP Rating

IP65 (Dust tight and water resistant)


2 years