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2.2 MEASUREMENT SYSTEM CHECKOUT AND/OR GAIN ADJUST
The Model 401B04 is inserted in place of the ICP
®
sensor in your measurement system. Connect the
input of the 401B04 to a signal generator and the output to the ICP
®
sensor signal conditioner. Also
connect any additional amplifiers or recording devices that will be used in the test, as shown in the figure
above. After switching on all equipment and allowing sufficient warm-up time, apply a known signal
through the system with the signal generator and adjust gains, ranges, zeroes, etc., as needed.
2.3 CALIBRATION OF LONG LINES
Model 401B04 can be used, in conjunction with an oscillator or step function generator, to simulate an
ICP® sensor driving a long input cable between the sensor and the ICP sensor signal conditioner. Refer
to PCB “General Guide to ICP® Instrumentation” for more details on the procedure.
3. FREQUENCY RESPONSE CONSIDERATIONS
When used with a signal generator for system checkouts or testing of long lines, low frequency response of
the 401B04 is DC.
High frequency response of the Model 401B04, when driving short cables with small (~1V) signals, is 1
megahertz. Refer to PCB “General Guide to ICP® Instrumentation.” if long cables are to be driven. Also,
consult the factory if less than 2 mA constant current will be used to power the 401B04.
4. MEASUREMENT AND REPAIR
The miniature size precludes most maintenance. If used in a very humid or dirty environment, signal
degradation, usually in the form of reduced output or loss of low frequency response, may occur. If the
connectors become dirty, clean with Freon TF ®, Genesolv, or other suitable solvent that leaves no residue.
Manual Number: 40858
Manual Revision: A
ECN Number: 38393
Содержание RH401B04
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