Number 4250-2010
Revision 0.1
Date MAY 1996
Page 2 of 37
• Coordinate with Handar for return, servicing, and recalibration of 540A/570A DCPs
that fail to operate within factory specifications.
• Prepare purchase orders for factory servicing and recalibration of Handar 540A/570A
DCPs.
• Replace the Handar 540A/570A internal battery as required.
• Archive all DCP servicing records.
2.3 DATA COORDINATOR
The data coordinator shall:
• Inform the instrument technician when a DCP is being removed from the field.
• Provide the instrument technician with a description of the field problems observed
with the DCP.
3.0 REQUIRED EQUIPMENT AND MATERIALS
Specific instrumentation, tools, equipment, and materials required to service and test the
Handar 540A/570A DCP are as follows:
• Calibrated voltage source - Datel Model DVC-350A or equivalent
• RF wattmeter - Bird Model 43 with #250D power element and 50 ohm RF load or
equivalent
• Digital voltmeter (4 1/2 digits)
• Handar, Inc. Operating and Service Manual for 540A Multiple Access Data Acquisition
System, 560A Hydrologic Data Collection System, and 545A Programming Set
• Handar, Inc. 570A Data Acquisition System Operating and Service Manual
• Handar "TERM" program (DCP communication and interface software)
• IBM PC-compatible computer
• Spare circuit boards as required
• Replacement internal 12 volt battery
• Two (2) packs desiccant
• Reference AT/RH sensor (Rotronics GT-L or equivalent)
• Rotronics AT/RH Sensor (Model MP-100F, wired for use with the Handar 540A/570A
DCP)
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