RHADOX 7100 / 7100 Ex Gas Analyzer

RHADOX 7100 / 7100 Ex

To allow the economic use of Off-gases from processes a reliable control of the burners requires Wobbe-Index and Air demand as control values, to adjust to the ever changing gas composition. These two parameters are measured with the RHADOX 7100 / 7100 Ex Analyser.

Typical applications are:

Off-gases from blast furnaces
Off-gases from chemical and petrochemical plants
Off-gases from water treatment plants and biomass plants
Quality control in the glass industries
Due to the deviation in quality of Off-gases the RHADOX™ Analysers are calibrated with two gases which represent the low and high end of the measuring range. The accuracy of the measurement is depending mostly on the simulation of the Off-gas by the calibration gases. The definition of the calibration gases is provided by AMS. The quality of the calibration gases is most important.

To take advantage of the extremely fast response and T90-times the RHADOX™ Analysers have to be installed close to the point of gas extraction. The only prerequisite is a frost-free environment at the point of installation.

The RHADOX™ Analysers are mounted on a metal mounting plate with the components catalytic reactor, gas mixing chamber, electronic evaluation unit, power supply and measuring signal distribution installed in separated sheet metal housings. The housings of the components are manufactured for general purpose in protection class IP 65.Technical data
Measuring System
RHADOX 7100 / 7100 Ex
Ex-classification
ATEX II 2G Ex px IIB+H2 T4 Gb X (Ex-Zone 1)
ATEX II 3G IIB+H2 T3 (Ex-Zone 2)
Measuring components / -ranges

Air demand
smallest measuring span 1,5 m3 Air / m3 Gas
largest measuring span 30 m3 Air / m3 Gas
Wobbe-Index
smallest measuring span 5 MJ / m3
largest measuring span 120 MJ / m3
Analogue output port
2* 4 … 20 mA, galvanically separated
Reproducability
0,15 % of measuring value
Long term drift
< 2 % of measuring value / month
Temperature drift
< 0,02 % / K, relative to end of measuring range
T90-Time
ca. 5…15 seconds, depending on viscosity of the measuring gas
Other data

Display
2* 16 digit illuminated LCD display
shows Wobbe index, air demand and analyser status
Optional
graphic screen
Messages
1 System message (Measuring value yes / no)
3 Messages (Indication of operating status)
Service, Calibration, Error messages
Digital communication
Serial interface RS232
Optional
interface RS 485, Ethernet
Ambient operating temperature
from - 5 °C to + 45 °C
Operating temperature
from + 5 °C to + 60 °C,
Special version up to + 105 °C
Gas connections

Inlet
Calibration gas 3 mm, Mesuring gas , Instrument Air 6 mm, Ferrule pack
Outlet
Gas outlet 12 mm, Bypass 6 mm Ferrule pack
Gas flow volume
Measuring gas 20 … 100 Nl/h
Instrument Air 50 … 500 Nl/h (depending on Air demand)
Gas pressure (at Inlet)
> 0,1 bar (g)
Instrument Air > 2 bar (g), max. 8 bar (g)
Power supply
115 or 230 VAC / 50 - 60 Hz, 1000 VA
Protection class / Housing
IP65
Dimensions
1000 x 900 x 350 mm (hxbxt)
Weight
ca. 100 kg … 140 kg, depending on protection class
Options
integrated catalytic by-pass-gas remover
Auto-Calibration