Product page

H2S analyser Defor

H2S analyser Defor

DEFOR is an extractive UV gas analyzer that can simultaneously measure up to three measuring components. It is a specialist for extremely selective NO measurement with small measuring ranges and an allrounder for many other UV-active gases, e.g. SO2, NO2, Cl2, NH3, CS2, H2S and COS. Cross-sensitivities to CO2 and H2O do not exist because of the spectral range used. Innovative signal processing as well as highly stable detectors provide excellent long-term stability and compensation of drifts and influencing effects. DEFOR with stateof- the-art electronics and software has the interfaces required for remote monitoring from a network as well as to the connection to process control systems.

Measuring principle The DEFOR process photometer operates according to the principle of absorption in the ultraviolet radiation range. NO-specific as well as other wideband radiation fractions are emitted from an electrode-less discharge lamp in the ultraviolet spectral range. The radiation spectrum, required for measurement and reference of the respective gas component, is generated in the filter wheel unit by one or two revolving filter wheels. For NO measurement, DEFOR uses the gas filter correlation where the radiation spectrum for measurement and reference is separated by a cyclic swiveling in of an NO gas filter. For all other gases, interference filter correlation is used.

Michel de Ruiter | Multi Instruments

Questions?

If you have any questions, do not hesitate tot contact us.

Specifications

Measuring principle NDUV spectroscopie / UVRA spectroscopie
Ambient temperatures +5 °C ... +45 °C
Interfaces Ethernet / RS-485
Bus protocol Modbus TCP / OPC / SOPAS ET / Modbus RTU
Conform 2001/80/EG, 2000/76/EG,
27.BImSchV, TA-lucht, EN 15267,
EN 14181, MCERTS
Analogue outputs 4x 0/2/4 ... 20mA, max. load 500Ω;
Electrically isolated
Analogue inputs 2x 0/4 ... 20mA
Not electrically isolated
Digital outputs 8 outputs:
34V AC, 500mA / 48V DC, 500mA
Digital inputs 8 inputs: 42V
All inlets with common reference potential
EN14181 QAL1 certificate Yes
EN 15267-3 certificaat Yes
Response time 4 s
Display LC-display
Status LED's: *Power*, *Maintenance* and *Failure*
Electrical safety CE
Michel de Ruiter | Multi Instruments

Questions?

If you have any questions, do not hesitate tot contact us.