PTW NOMEX L981815, User Manual, Page: 71 / 97

NOMEX
Operating Manual - Error Messages and Erroneous Measurements
D909.131.00/02 en 71
Message Measured quantities Cause Remedy
Reduced dose accu-
racy Dose rate
Dose
Dose per pulse Reduced dose accu-
racy, measuring error
≥ 5 % Repeat the measurement.
Increase the dose rate on the
X-ray unit.
Reduce the distance.
Manually set the total filtration
in the
Measurement menu.
Short exposure time
detected Dose rate
Dose
Dose per pulse The exposure time
is too short for the
required adapta-
tion of the measur-
ing range (refer also
to section
7.3.5.1
"Measurements with
Very Short Exposure
Times"
).
Repeat the measurement.
Low dose rate
detected Dose rate
Dose
Dose per pulse NOMEX is in a high
measuring range (refer
also to section
7.3.5.1
"Measurements with
Very Short Exposure
Times"
). The dose rate
is too low for this mea-
suring range.
Repeat the measurement.
Dose rate too high
Dose measuring
range exceeded
Dose rate
Dose
Dose per pulse
Tube voltage
measuring range
exceeded Tube voltage
Total filtration
Half value layer
The electronic mea-
suring system is out of
range. Reduce the dose rate on the
X-ray unit.
Increase the distance.
Reduce the tube voltage or
tube current.
Dose rate too low Dose rate
Dose
Dose per pulse
Insufficient kV signal Tube voltage
Total filtration
Half value layer
The electronic mea-
suring system is out of
range. Increase the dose rate on the
X-ray unit.
Reduce the distance.
Increase the tube voltage or
tube current.