SAPHYMO MiniTRACE CSDF - Cleaning the Case; Technical Properties and Functions; Figure 32: Removing the Grid (Part 2); Table 5: Technical Data

Instruction Manual for MiniTRACE CSDF
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08/2012 Page 31
Once the screws have been loosened, the grid and lid can be removed together and cleaned
without danger or difficulty. To screw the grid back on, keep the lid closed to protect the
counter tube.
Figure 32: Removing the grid (part 2)
4.2.2 Cleaning the case
Do not use a solvent. Instead, clean the case using a damp cloth.
4.3 Technical properties and functions
Properties
Model CSDF
Display unit: µSv/h, cps, Bq, Bq/cm
2
, Bq/l
Display and measurement range: Dose rate: 0.00 µSv/h to 5,000 µSv/h
Pulses: 0.0 to 10,000 cps
Activity (depends on the radionuclide): 0 to max. 100,000 Bq
Surface activity (depends on the radionuclide): 0 to approx. 5,000 Bq/cm
2
Food: 500 to 100,000 Bq/L
(related to Cs-137, 30% statistical uncertainty for 1 Sigma, at 0.1 µSv/h
background radiation)
Gamma sensitivity (Cs-137) 4.3 Counts/sec./µSv/h
Energy response for dose rate
measurements [µSv/h]
24 keV to 1,253 keV +/- 40%, lid has to be closed, see Figure 33
Detector:
Geiger-Mueller pancake, max. diameter: 53.6 mm; active diameter 44.5 mm,
active counter tube surface 15.55 cm², window: 2.0 mg/cm²
Grid: 0.8 mm thick stainless steel, easily removable, 80% transparent
Distance between grid and detector surface 3.6 mm
Measurement intervals:
Automatic adjustment from 1 to 60 seconds
Adjustable in Count up mode by buttons
Display:
6-digit 7-segment LCD display plus 5-digit alphanumeric display for alarm and
status reports
Alarm thresholds: See Chapter 2.2
Alarm:
Visual and acoustic. The frequency of the beep will increase according to the
level of the alarm threshold.
Acoustic registration of impulses: Can be activated by buttons and MiniTRACE Software
Reference source:
Co-60 meeting DIN ISO 8769 (DKD certified).
Cs-137: Source number: CDC 7915
User calibration: Possible using infrared interface.
Battery life: Typically 2,000 hours
Energy supply: 2 batteries (type: LR6, AA, MN 1500), protected against changes to polarity.
Operational temperature range: -10°C to +40°C (14°F to 104°F)
Weight; Dimensions 320 g incl. batteries; 82 mm x 24 mm x 139 mm
Compatibility: IEC 60325, IEC 60846 (partially), IEC 61000-3.
Accessories (optional):
User software for change of settings by infrared communication.
Infrared reader.
Accessories for food and wipe tests
Table 5: Technical data