Fluke Victoreen 451P, Operator'S Manual

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Victoreen 451P & 451P-DE-SI
Operators Manual
1-2
1.2.2 Low Battery Indicator
There are about six hours of operation remaining when the LOW BATTERY indicator first becomes
visible. When the LOW BATTERY indicator blinks, there is less than one hour of operation remaining.
These times are for two batteries installed and from the first occurrences of these indications. If the
instrument is turned off during a low battery condition, the batteries will recover somewhat, but time of
operation remaining will be less. The LCD low battery indicator is disabled during communication mode.
Be sure to use fresh batteries when calibrating this instrument.
If chamber bias is LO, the instrument can’t measure
high radiation rates accurately. Service to the
instrument is required.
Verify the chamber bias is low. Turn the unit off and replace with new 9-volt batteries. Power up the unit.
After the self-test, if blinking low battery reoccurs the bias is low. Refer to Section 4 Maintenance.
1.2.3 Warm-up Time
The pressured ion chamber collection potential is 105 Vdc and is derived from the 5 lithium cells. The
warm-up time for an instrument that has been off 12 or more hours is about four minutes for readings less
than 20 μR/h in a 10 μR/h or less background.
1.3 Receiving Inspection
Upon receipt of the unit:
1. Check the shipping cartons(s) and their contents for in-shipment damage. If damage is evident, file
a claim with the carrier and contact Fluke Biomedical, Radiation Management Services Repair
Coordinator at 440.498.2564 or 800.850.4606 immediately.
2. Check that all items listed on the packing slip are present and in good condition. If any items are
missing or damaged, contact Fluke Biomedical, Radiation Management Services Repair
Coordinator at 440.498.2564 or 800.850.4606 immediately.
1.4 Specifications
Radiation Detected Beta above 1 MeV & gamma above 25 KeV
Operating Ranges 0 to 500 μR/hr (0 to 5 μSv/h), 0 to 5 mR/h (0 to 50 μSv/h)
0 to 50 mR/h (0 to 500 μSv/h), 0 to 500 mR/h (0 to 5 mSv/h)
0 to 5 R/h (0 to 50 mSv/h)
Accuracy ± 10% of reading between 10% and 100% of full-scale indication on any range,
exclusive of energy response (calibration source is 137Cs)
Detector 230 cc volume air ionization chamber, pressurized to 6 atmospheres
Plastic chamber wall 200 mg/cm2 thick
WARNING