The Model 193-6 is a highly sensitive gamma microR survey meter with an extended reach capability.
A very sensitive 15.2 x 2.5 cm thick (6 x 1 in.) plastic scintillator detector is mounted at the end of a
1.2 m (4 ft) long pole to facilitate reaching elevated areas.
Attached to the user-end of the pole is a four-range analog ratemeter employing a cast aluminum
instrument housing with a separate battery compartment and accompanying metal handle. The overall
design delivers industrial robustness and quality that promote long-lasting protection and instrument
The ratemeter front-panel controls include a rotary switch for selecting one of the four ranges,
instrument shut-off, and battery test; an audio on/off switch; a fast/slow response switch; and a
pushbutton for count reset. This instrument supports two types of alarms: a user adjustable fixed point
alarm, and a deviation alarm that activates at levels above a floating background. Multi-turn
potentiometers are located under a removable front panel calibration cover (removed for clarity in
image). An alarm light is mounted to the front panel and is accompanied by an audio signal.
Application Low level (microR) gamma survey
Detector (D x L) EJ-212 plastic scintillator, 15.2 x 2.5 cm (6 x 1 in.)
Sensitivity (137Cs gamma) Typically 2500 cps per μSv/h (1500 cpm per µR/hr)
Energy Response Energy dependent
Linearity Reading ± 10% of true value
Meter Dial 0 – 1 µR/hr, BAT TEST
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