Zero point deviation
negligible due to automatic zeroing
Deviation
less than 0.2% of the measuring range per month
Calculated components
NOx: NO + NO₂, calculated ppm or mg / m3, user-selectable O₂ reference
combustion calculations (efficiency, heat loss) on special request
Display
Illuminated 3.5 "TFT color display
Interfaces
Illuminated keyboard, password-protected operation
4 analog outputs 4 ... 20 mA, galvanically isolated, max. load: 500 R
2 alarm relays, potential-free contacts: 24 Vdc, 5 A
Data storage and data logger on SD card
RS 485 digital interface (Modbus RTU
DIN rail RS 485, to ProfiBus converter or to Ethernet converter
Gas sampling probe
HD gas sampling probe, heated ceramic filter with backpurge,
or gas sampling probe HD-GW, heated glass wool filter,
or LD gas sampling probe, unheated with in-situ sintered metal filter,
heated or unheated gas sampling line, PTFE DN 4/6 mm
Gas conditioning
Thermoelectric gas cooler (Peltier) with constant +4 ° C dew point
Teflon particle filter, internal Viton tubing
Monitored and regulated gas sampling pump
Constant gas flow of 50 l/h
Gas inlet pressure: -200 ... +20 mbar (hPa)
Sample gas outlet: atmospheric pressure
Housing
Stainless steel housing, continuously monitored housing ventilation with alarm,antifreeze heater 200 W (option)
Operating temperature
(+5 ... +45 °C) or (-10 ... +45 °C) with housing heating
Power supply
Universal: 90 ... 240 Vac, 47 ... 63 Hz, 120 W (420 W with heating)
Protection
IP 54
Dimensions
(B x H x T) 700 x 600 x 210 mm, suitable for wall mounting
Weight
approx. 50 kg