Rotem DRM-3000 - Recommended Calibration Points

Page | 45 DRM-3000 Operating Manual
chart in the software (Src. – Source Number; Ref. Point – Defined Dose Rate; Distance –
Defined Distance from Source; Attenuator – user applied shielding factor for source – if
none is utilized enter 0). Below is an example of a Meter Calibration.
Src
Ref. Point
Distance
Attenuator
1
5.07 mR/h
58 in
10
1
50.7 mR/h
58 in * F1
1
1
240.5
mR/h
25 in
1
1
962.1
mR/h
11 in * F2
1
1
1309.5
mR/h
9
1
10.1.1 Recommended Calibration Points
Meter
GM Tube
DOSE RATES
CALIBRATION FACTORS
ZP1201
0.1 to 1 mSv/h (10 to 100 mR/h) F1
4 to 15 mSv/h (400 to 1500 mR/h)
F2
> 15 mSv/h (1500 mR/h) OFLO test
Detector
–
Low Range / High Range
DOSE RATES
CALIBRATION FACTORS
0.1
to 1 mSv/h (
10 to
100 mR/h
)
F1
ZP1201
1
to 15 mSv/h (
100 to 1500 mR/h
)
F2
15 to 1,000 mSv/h (1.5 to 100 R/h) F3
ZP1301
2
to 3 Sv/h (
100 to 300 R/h
)
F4
3 to 10 Sv/h (300 to 1000 R/h) F5
>
15 Sv/h (
1500 R/h
)
OFLO test
4. Each calibration factor can be set within the range mentioned above (e.g. 0.1 mSv/h to 1
mSv/h) but we recommend that if possible each calibration factor be set in the middle of
each range. So for the range of 0.1 mSv/h to 1 mSv/h, we recommend that the detector is
placed in a dose rate field of 0.5 mSv/h.
Meter
Recommended Cal Point
CALIBRATION FACTORS
0.5 mSv/h (50 mR/h)
F1
7 mSv/h (700 mR/h) F2
Detector
–
Low Range / High Range
Recommended Cal Point
CALIBRATION FACTORS
0.5 mSv/h (50 mR/h)
F1
7 mSv/h (700 mR/h)
F2
0.5 Sv/h (50 R/h)
F3
2 Sv/h
(200 R/h)
F4
6.5 Sv/h (650 R/h) F5
> 15 Sv/h (1500 R/h)
OFLO test
5. The tight range for the F3 value is to provide good linearity for the High Range tube in the
switch – over range 1500 – 400 mR/h. Higher calibration points may be used if the
customer verifies acceptability of high range response in switch over range.
6. The above entered information may be saved as a template to be used for future