BERTHOLD TECHNOLOGIES LB 444 - Page 85

04/03 347 LB 444
75
49 Liquid density / Solid den-
sity not entered
(Rho.S/RhoL)
Liquid density and/or Solid density not entered
50 I.Max/I.Min value Current output entered incorrectly
51 Current input error Current input range entered incorrectly
52 Current output limit value Current output range entered incorrectly
53 Current input error Current input too high > 20mA
54 Device not calibrated Calibration has to be terminated with <enter>
56 Range overflow Input value outside permissible range
57 Wrong input value Input value outside permissible range
58 Calibration faulty Wrong calibration
60 Digital inputs for product
selection allowed
Window for product selection in menu Parameter set to
external.
Problem Possible Cause Potential Solution
Check mains cables No display No power supply
Check fuses
Display unreadable Processor error Note error code
Perform total reset
Replace evaluation unit
Power supply for
detector interrupted
Check cable to detector No pulse rate
(Error code 2)
Detector is faulty Replace detector
Shielding not open or
not properly opened
Check lock and secure it in OPEN position Pulse rate too low
Alignment of useful
beam toward detector
not correct
Correct and optimize alignment
Container installations
in radiation path
Offset irradiation level
Wall deposits in
container
Remove wall deposits
No or incorrect
result reading
Entry of calibration
values incorrect
Check correlation of count rate and lab values
Output current
incorrect
Entry of calibration
values incorrect
Check correlation of count rate and lab values
Time constant too
small
Increase time constant in the Parameter
menu
Rapid switchover with
Sigma value too small
Disable rapid switchover
Result reading
fluctuates strongly
Pulse rate too low Check age of source and irradiation level.
Replace detector
Detector stabilization
faulty
Replace detector
Photomultiplier faulty Replace photomultiplier
Result reading
shows drifts
Incorrect isotope
entered
While measurement is running:
enter calibration date
correct isotope
enter current date