
Functions of the VARIO PLUS INDUSTRIAL
Simultaneous measurements of up to 9 gas components!
E.g. O2, CO, NO, NO2, NOx, SO2, CO-high, CO-very high, H2S or H2, CH4 or C3H8
Up to 6 electrochemical sensor configurations are possible!
Plus additional 3 gas NDIR bench with CO2, CO-high, CH4 (C3H8).
Emission calculations including: mg/m
NO2, true measurement of NOx = NO + NO2, including
referencing (normalization) to user definable values
Gas temperature measurement up to 2,012°F (use stainless steel up to 1,200°F, use Inconel tubes up to 2,012°F)
Integrated gas cooler and automatic condensate draining pump / PTFE filter
Air purging pump for CO-sensor protection
Built-in speed printer with easy paper loading
Internal data storage for up to 8,500 measurements!
8 channel analog outputs 4 …. 20mA
Differential pressure measurement ± 40 inH2O (100 hPa)
Automatic self test of software and hardware functions
Large, high-contrast and backlit graphic display with ZOOM function
Combustion calculations (fuel type dependent):
O2 Long-life (0…21.0 Vol.-%)
-compensated (0 … 4,000 / Overload 10,000 ppm)
Combustion air temperature (short plug included)
Excess air and air ratio (Lambda)
Suitable for industrial applications using combined infrared (NDIR)
technology and electrochemical sensors for maximum versatility.
Complies with USEPA methods CTM-030 and CTM-034 and international ASTM D6522
Certified according to DIN EN 50379-1 and DIN EN 50379-2

SD card 4 GB for large volume data logging
External battery for measurement operation up to 6 hours
Sample probe with heated filter
Heated gas sample line, length 120" or 200"
(only with grid voltage supply)
Sample probe tubes with length from 12" to 80"
Gas velocity measurement using Pitot
tube [Nm³/s] and mass flow calculation [mg/s]
8 channel analog outputs 4 … 20 mA
External 12 Vdc power supply cable from cigarette lighter
Robust aluminum framed transport case with dolly
Analyzer heating device (freeze protection)
Different probes available
SIMULTANEOUS MEASUREMENT OF UP TO
Pitot tube

DATA SUBJECT TO CHANGE WITHOUT NOTICE
Portable analyzer with up to 6 electrochemical sensors and 3 gas NDIR bench
Natural gas, liquid gas, oil light, pellets, wood, coal, user definable fuels
5 % reading < 4,000 ppm / 10 % reading > 4,000 ppm
5 % reading < 0.4% / 10 % reading > 0.4%
5 % reading < 1,000 ppm / 10 % reading > 1,000 ppm
5 % reading < 200 ppm / 10 % reading > 200 ppm
5 % reading < 2,000 ppm / 10 % reading > 2,000 ppm
± 5 ppm or 5 % reading up to 500 ppm
10 % reading up to 2,000 ppm
±0.02 % or 5 % reading <1 %
*overload range recommend only for short time measurements
3 Gas NDIR Bench with either CH4 or C3H8
± 0.03% or ±3% of reading
± 0.03% or ±3% of reading
0…..2,000ppm up to 5,000ppm
± 30 ppm or ±3% of reading
Stack / Flue gas temperature
± 4°F ... < 392°F / 1 % reading > 392°F
(with stainless steel / Inconel steel tube)
Primary-air / Ambient temperature
Stack / Differential pressure
± 0.01 inH2O or 3% reading
Gas flow velocity measurement
1 ... 100 m/s (using Pitot tube)
Calculated values (fuel type dependent)
(calculated without NDIR)
40°F .... 100°F, max. 95 % RH, non condensing
not in aggressive, corrosive or high dust environments, not for use in hazardous areas
approx. 2 hours battery operation with gas cooler, without heated gas sampling line
100 ... 250 Vac / 47 ... 63 Hz
approx. 15.4 lbs. (without transport case, bag, trolley)
(W x H x D) 21" x 19" x 12"
MRU Instruments, Inc.
Houston, Texas 77044
Tel.: (832) 230 - 0155
Fax: (832) 230 - 1553
info@mru-instruments.com