Disposable Single Gas Detector - O2, CO, H2S, SO2, NH3, H2 or NO2

The disposable PDM is a full-featured single-gas detector that offers you unequalled value. The PDM single gas detector is your daily monitor for hazardous environments, because of its high reliability and user-friendliness. The PDM is the most cost-effective way to ensure safety. It operates for up to two years, just turn on the device and it runs continuously — no need for battery charging and replacements of sensors and batteries. That means great reliability and no downtime. The PDM is easy to wear, the backside of the device has a strong metal clip to secure the monitor to a shirt, belt, or helmet. The PDM devices are compatible with WatchGas Docking Station and WatchGas IR-Link. Both devices provide the function to download the data of the PDM single gas detector. The 30 most recent events can be stored on a data carrier. Our PDM can be calibrated or bump tested manually. The PDM Multi Dock will automatically calibrate four devices simultaneously (up to 12 devices per minute), which reduces downtime and gas consumption. We also have a PDM Mono Dock available

  • Lightweighted & Compact;
  • Stores up to 30 events;
  • Cost-effective;
  • User-friendly;
  • Unequalled value;
  • 2 years of use;
  • IP-67;
  • Fast bump tests with Docking Station;
  • Visual, Acoustic and Vibration alarms.


Detectable Gas Ranges O2 = 0-30%Vol

SO2 = 0-20ppm

NO2 = 0-20ppm

CO = 0-500ppm

NH3 = 0-100ppm

H2S = 0-100ppm

H2 = 0-1000ppm

Resolution O2 = 0.1%Vol

SO2 = 0.1ppm

NO2 = 0.1ppm

CO = 1ppm

NH3 = 1ppm

H2S = 0.1ppm

H2 = 1ppm

Output Specifications LCD display of current reading with alarm sounder and vibrator
Sensor Technology Electrochemical Cell
Power Supply DC 3.6V, 1.2Ah Lithium battery
Operating Life 24 months, based on 2 minutes of alarm per day
Operating Temperature -30°C ~ 50°C
Operating Humidity 5% ~ 95% RH (Non-condensing)
Dimensions 49mm(W) x 84mm(H) x 40mm(D)
Weight 93g (Toxic), 104g (O2) (Battery, clip included)
Alarm 95dB
Enclosure Material Polycarbonate and rubber
IP Rating of Enclosure IP67
Certificates & Approval ATEX: II 1g Ex ia IIC T4, CSA: C1, D1, Groups A, B, C, D, T4, IECEx: Ex ia IIC T4 Ga

Manufacturer Watchgas
Lifetime: 2 Years
Article Nr. O2: 7181411
Article Nr. CO: 7181412
Article Nr. H2S: 7181413
Article Nr. SO2: 7181414
Article Nr. NH3: 7181415
Article Nr. H2: 7181416