DO6 Handbook
Jan 2006
106 of 107 pages
10.2 Calibration
The instrument is calibrated digitally. PC software (to be purchased separately) and a range
of calibration resistances are required for the calibration.
10.3 Error messages and troubleshooting
Fault
Possible cause
Remedial action
Display does not
come on.
Mains fuse blown.
Mains lead faulty or loose.
Remove mains lead. Replace mains
fuse 0.63 A slow-blowing. Check
mains lead.
Flashing zeros,
Overload indicator,
Overdriven.
Wrong measuring range selected, test
lead open-cU or –U, load
impedance too high.
Select correct measuring range.
Connect test leads correctly.
Display difficult to
read.
Adjust contrast via interface or
manually.
Temperature range exceeded.
Set contrast initially to 50%.
Run instrument at correct temperature.
Measured values
flickering.
Interface picked up by test leads.
Position test leads differently.
Error message,
Current source
oscillating.
Unsuitable load.
Select next longer time constant.
Error message.
Fuse in current source under test.
Short-circuit supply lead to device
current too low has blown, disconnect.
Remove mains lead. Replace fuse.
Use only Superquick-acting fuse 10
6.3*32mm, 600VAC, 50000 breaking
capacity. Check teat leads.
Error message
Pt100 fault.
Pt100 contact problems.
Not present, check leads and
connections to Pt100 sensor.
Error message
Pyrometer.
0-10 V exceeded.
Check pyrometer voltage.
Error message
Measurement
current too high.
Current source faulty.
Return instrument for repair.
Содержание DO6
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