Ranges and alarms Range Alarm

and alarm settings Flammable gas 0 - 100% LEL 20% LEL

(up to four gas Methane 0 - 100% vol -

measurement channels) Oxygen 0 - 25% 19%/23%

Hydrogen sulphide 0 - 50 ppm 10 ppm

Carbon Monoxide 0 - 500 ppm 30 ppm

Sulphur dioxide 0 - 10 ppm 2 ppm

Chlorine 0 - 5 ppm 0.5 ppm

Nitrogen dioxide 0 - 10 ppm 2 ppm

Phosphine 0 - 5 ppm 0.5 ppm

Ammonia 0 - 50 ppm 25 ppm

Hydrogen (non- 0-2000 ppm -

flammable levels)

Hydrogen cyanide 0 - 25 ppm 10 ppm

Hydrogen cyanide 0 - 10 ppm 5 ppm

up to three levels of alarm Ozone 0 - 1 ppm 0.5 ppm

are available per channel Other sensors available

Typical response times Methane 20 s, Oxygen 10 s, Typical Toxic Gas 20 s.

Expected sensor life Flammable 5 years, Toxic 3 years, Oxygen 2 years.

Audible alarms Piercing, rapid intermittent, piezo-electric tone,

85 dBA at 1 m.

Confidence blip (selectable).

Distinctive double blip for low battery.

Visible alarms Ultra bright flashing red LED in gas hazard.

Slow flashing green LED indicates instrument isworking.

Distinctive double flash of green LED indicateslow battery.

Display 2 lines of 24 characters, dot matrix high contrastLCD with back light operating for 30 minutes.Values and units for up to 4 gases displayedsimultaneously at current, TWA or peak levels.Low battery, pump failure, real time and elapsed time, calibration and configuration data alsodisplayed.