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Model 300/2 Dual Gas NDIR Analyzer
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NDIR Dual Gas Analyzer
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The VIG Industries, Inc. Model 300/2 is designed to measure a two gasses (or
three with oxygen option). The Model
300/2 optical bench consists of the IR source, sample cell, and patent pending
detector. The source control circuit provides
a controlled current square wave to the infrared source. No mechanical chopper
is used so there are no moving parts in the
Model 300/2 optical bench which require adjustment or can wear out. Infrared
energy from the source passes through the
sample where energy at specific wavelengths is absorbed by the sample. The
closed sample path eliminates interfering
absorption from ambient air. The energy not absorbed in the sample cell reaches
the detector which is sensitive to the
wavelengths attenuated by the gas of interest. The patent pending Model 300/2
detector consists of two chambers in optical
series with a very sensitive transducer to measure the relative energy absorbed
by each chamber. The primary difference
between the Model 300/2 detector and other NDIR detectors is that these two
signals from the primary and secondary
chamber are balanced. The balancing process greatly improves the sensitivity
and selectivity for the gas of interest.
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Model 300/2 Keyboard - Operation As Easy As Pushing A Button
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The top of the line vacuum fluorescent display continually monitors the
concentration of the gas of interest in the selected
units, as well as the zero and span values during calibration. The bottom line
displays: chart recorder range, linear or
non-linear mode, and response time. Any error or alarm condition will alternate
with this information until acknowledged by
the operator. Operating parameters are established by way of the four buttons
on the Model 300/2 keyboard. The setup
button is used to define settings such as calibration gas concentration, sample
cell flush time, automatic calibration intervals,
chart recorder ranges (1-4), and high and low level alarms. The mode button is
used to select active chart recorder range,
response time, linear and non-linear units, activate the audible alarm, adjust
display brightness, and initiate manual zero and
span calibrations. The arrow are used to make changes in values or selection of
desired parameters in the setup and mode
functions. In the event of a power failure, battery backup retains all settings.
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Applications:
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Process control
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Stack gas monitoring
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Continuous emission monitoring
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Combustion efficiency
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Environmental gas analysis
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Heat treating
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Natural gas plants
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Utility plants
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Flue gas analysis
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Coke oven analysis
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Carburization Processes
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Monitoring of: boilers, incinerators, furnaces
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Vehicle Emissions
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Features:
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No range switching or over range conditions
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Digital signal permits microprocessor linearization for increased accuracy
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Optional oxygen channel
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Optional NEMA rated enclosures
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Measurement of one of the following selected gasses: Methane, Propane, CO, CO
2
, NO
2
, SO
2
, NO
X
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Specifications
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Analysis Method:
NDIR Single Beam
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Gas Measured:
User Selectable
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Measuring Range:
User Selectable
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Resolution:
0.1% of Full Scale
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Repeatability:
0.1% of Full Scale
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Noise:
0.1% of Full Scale
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Drift:
0.1% of Full Scale
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Response Time:
at 1, 10 or 100
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Display:
Vacuum Fluorescent, 2 Lines of 16 Alphanumeric Characters
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Alarms:
High & Low Limit, User Selectable
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Analog Output:
Selectable 0-1, 5, 10Volts, Optional Isolated 4-20mA Loop
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Analog Ranges:
4, Each With Adjustable Full Scale. Selectable Auto Range
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Front Panel:
Four Button Interface, Using Display Menus
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Voltage:
0-1, 5, 10Volts, Selectable
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A.C. Output:
Isolated Triac Control for Zero & Upscale Gas Values.
Rated Maximum Load: 0.6Amp, 240VAC
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Operating Requirements
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Power:
115/220Vac, 50/60Hz
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Power Consumption:
200Watts
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Sample Flow:
.2 to 2.0 Liters/Minute
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Sample Temperature:
-10 to +50 Degrees C.
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Dust:
Sample Should be Dust Free
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Moisture:
Non-Condensing (Dew Point Below Outlet Temp. of Analyzer
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Pressure:
Inlet Gas not to Exceed 5PSIG
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Exhaust Gas:
Non-Restrictive Outlet Aperture/Hoses
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Zero Gas:
Typically Nitrogen
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Upscale Calibration Gas:
Gas of Interest in Nitrogen
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Warm Up Time:
Useable in 30 Minutes. Optimum
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Operation in 2 Hours:
Ambient Conditions
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Operating -10 to 50 Degrees C.:
Storage -10 to 80 Degrees C.
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Dimensions:
22"L x 18"W x 5.25"H
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Weight:
22LBS
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Warranty
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All instruments sold by VIG Industries, Inc., are warranted for a period of one
(1) year from the date of purchase,
against defects in materials and workmanship. VIG warrants that the product
supplied conforms to the specifications
assigned thereto. There is no other warranty either implied or expressed.
Seller liability is limited specifically to the cost
or assigned value of the items sold.
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