Ammonia Detector-Transmitter Evikon E2608-NH3

Features

• Stable long-life electrochemical sensor
• Range 0...100 / 0...300 / 0...1000 / 0...5 000 ppm NH3
• Resolution 1 ppm NH3
• Two SPST relays
• 2 × 4-20 mA or 0-10 V, RS485

It includes two RE1 and RE2 relays with shut-off dry contacts that can be used to trigger alarm sirens, fans, shut-off valves or other actuators. Remote probe, duct mount version and 24 VAC or 230 VAC power supply options are available as an option.

The instrument is intended for leakage control in refrigeration facilities, warehouses etc. It is not recommended to use the device in spaces with constantly high ammonia concentration such as cattle, pig and poultry livestock houses, since it shortens the sensor lifetime.

The instrument utilises a fully calibrated and temperature compensated electrochemical gas sensor with excellent repeatability, stability and long lifetime.

Two relays with closing contact may be used for remote signalling or concentration control. Two alarm set-points are user settable.

Two analog outputs and RS485 digital interface with industry standard Modbus RTU protocol can be used to connect the detector to safety or building automation systems.

Ammonia Description:

A colorless gas, highly soluble in water, with a characteristic pungent smell. Ammonia is a large-scale production of the chemical industry widely used as a raw material for the production of fertilizers and explosives,as a refrigerant,as a cleaning and antimicrobial agent. Ammonia is also produced naturally from the decomposition of organic matter, including plants and animals.

Colorless combustible toxic gas with a characteristic pungent smell.

• Lighter than air, density = 0,73 kg/m3
• Lower explosive limit (LEL) = 15 %vol

Health exposure limits (Directive 2000/39/EC):

• 8 hours TWA = 20 ppm (14 mg/m3)
• 15 mins STEL = 50 ppm (36 mg/m3)