infrared industries IR-8400D, Руководство оператора

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This output can accommodate up to an 600 Ohm loop. Also available is a 0-100 mV dc output. Several
optional ranges, such as 0-1, 0-5, or 0-10 Vdc, are available. This output appears at the
recorder plus and
minus terminals. This signal should feed an input impedance of 1 mega-ohm or greater to prevent
loading of the signal. A fault indicator circuit is used to monitor the analyzer. In the event of an
instrument failure, this will result in a zero signal output condition, where the display and output signals
out will go to zero, indicating an instrument fault.
As an option, the analyzer can be outfitted at any time (field modification) with set point alarms. These
contain relay closure outputs with a maximum rating of 10 watts at 28 volts DC.
G A S C O N N E C T I O N S
Unless calibrated specifically for other pressures, the analyzer requires a feed of clean and dry sample gas
at atmospheric pressure for analysis. The sample flow rate should not exceed 2 SCFH (1 SIMP). Since the
analyzer is usually calibrated with the sample cell at atmospheric pressure, pressurized gases must be
reduced ahead of the analyzer. A typical gas handling system would include a pressure regulator, a
coalescing particulate filter, a multiple inlet valve for introduction of calibration gases, and a flow meter
with metering valve. A prepackaged sample system, such as the Infrared Industries IR-1150 series, may
be provided. The conditioner and analyzer are usually mounted on the same plate.
The inlet gas connection on the analyzer is a 1/4" compression fitting. The standard outlet gas connection
is 3/8" compression. It is recommended that the outlet be vented away from the instrument to ambient
air. The tubing length and number of bends should be minimized in the vent line to reduce the
backpressure in the analyzer sample cell.
CAUTION: VENTED GAS MAY BE HAZARDOUS (EXPLOSIVE) AND SHOULD BE
TREATED ACCORDINGLY.