Continous measurement of gases, that exhibit the properties of absorbing infrared energy (e.g. carbon dioxide)

Typically used for the measurement of carbon dioxide over the range of 0–5000 ppm to 0–100 Vol. %.

Processes, in which the moisture content in the gas can be as high as 95% rel. humidity, for example:

• Monitoring composting processes in environmental technology
• Process gas monitoring in the food and provisions industry
• Food storage houses
• Monitoring fermentative processes in fruit processing
• Laboratories
• and many more

• 6-section keyboard and illuminated 4-line LC-Display for displaying actual values, half-hourly average values and fault messages in cleartext
• Operation, fault and alarm indications on LED's
• Menu-assisted setting of the equipment parameters via the 6-section keyboard
• Three separate alarm thresholds, referred to average value or instantaneous value; adjustable hysteresis
• Data memory for alarm and fault messages
• 3 floating relay contacts for alarm signalling
• Floating change-over contacts for faults, acoustic (horn) and optical warning (warning banners)
• RS 232 / RS 485 connection for communication with
  a PC or for controlling a printer
• 4-20 mA current interface
• Plastic wall housing IP54 / straightforward installation
• Extremely reliable, easy maintenance. Washable measurement chamber with replaceable dust filter
• Available with an integrated test gas feed pump (optional)
  
• External unterruptible power supply (optional)

The ITR 504 Infrared Gas Analyser System functions on the principle of NDIR technology (non-dispersive infrared). The test gas flows through a measurement chamber that incorporates an IR radiating source and a two-channel infrared detector. The intensity of the infrared radiation is reduced as it passes through the gas molecules. The concentration of the gas can then be calculated by the magnitude of the reduction in intensity.

Since only absorption of the wavelength specific to the gas under test in relation to the wavelength not absorbed by a test gas is considered, interference due to dust, ageing etc., is almost fully compensated. The measured values are temperature-compensated.

Signal horn, warning lamp, warning banner, testmeter, plotter, stand-by power supply UPS 2000-24V.
Further accessories will be offered according to themeasurement tasks required of the system.