Digital Radiation Survey Meter

This microprocessor-controlled instrument represents the new gold standard of survey instruments. The DSM-500 boasts an oversized digital display and a unique capability for dual probe capability. Comes standard with timed-count capability, probe-saturation and error indicators. This product can be configured with any of WB Johnson Instruments external probes.

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Product Specifications

Dose/CPM SwitchExternal Dose/CPM Switch
Input Sensitivity0.05V
Display-LCD4-Digit x .75" LCD w/LED Backlight
LCD Refresh Rate0.8-3.0 Sec in 0.2 Sec increments - adjustable
Dose Ranges0.0µR/hr-9999 R/hr
CPM Ranges0-999.9 Kcpm
Probe LinearizationInternal adjust for cal constand and dead time
Scaler Ranges0-999.9 Kcpm
Scaler Count Time Ranges10-2550 Seconds (10 second increments)
Alarms (optional)5-95% of Range
DiagnosticsLow Battery, Overrange - Audible & Visual Alarms
Range AdjustmentAuto-Ranging All Scales
Electrical Non-Linearity< 5% Full Scale
Response TimeFast - 10-2550 Seconds (adjustable) | Slow 10-250 seconds (adjustable)
Drift< 5%
Environmental-20°F[-28°C] to 140°F[60°C]| 5-95% RH IPX4 Housing
High VoltageAdjustable 300-1500 VDC | Regulation +-1%
Battery6 - "AA" Alkaline (nominal 100hrs Operation)
CircuitryDigital Microprocessor Controlled
Dimentions5.25"(14cm) H X 4" (10cm) W x 7"(18cm) L
Weight2.5 lbs. (1.2 Kilos)
ConstructionRugged, Heavy Duty Cast Aluminum & Stainless Steel
ProbesSupports All Johnson External Probes
Data Output9 Pin Serial RS-232 - Panel switch manual data extraction
Questions? Call today!
(208) 557-6945

Mailing Address
W. B. Johnson Instruments
3998 Commerce Cir.
Idaho Falls, Idaho 83401

Shipping Address
W. B. Johnson Instruments
3998 Commerce Cir.
Idaho Falls, Idaho 83401