MicroR Ratemeter - Model 192
Specifications
APPLICATION: low-level (microR) gamma survey
RANGE: 0-50 µSv/h (0-5000 µR/hr)
DETECTOR: 5.1 cm diameter x 2.5 cm thick (2.0 x 1.0 in.) NaI(Tl) scintillator
SENSITIVITY: typically 6.5 cpm/μSv/h (650 cpm/µR/hr) for 137Cs gamma
ENERGY RESPONSE: energy dependent
SENSITIVITY: typically 6.5 cpm/μSv/h (650 cpm/µR/hr) for 137Cs gamma
ENERGY RESPONSE: energy dependent
LINEARITY: reading within 10% of true value
METER: 6.4 cm (2.5 in.) arc, 1 mA analog type
METER DIAL: 0-5 µR/hr, BAT TEST (others available)
ALARM: This instrument incorporates dual action, latching type alarms:
ALARM: This instrument incorporates dual action, latching type alarms:
- A fixed alarm point that can be set at any point from 10% of full scale to full scale, and is indicated by a constant audible tone, and the lamp turning on.
- A quick deviation alarm that is based on background radiation levels. When the instrument is turned on, it takes an eight-second measurement of background radiation levels and determines a deviation alarm setting. If the radiation level exceeds this setting, the alarm audio will beep every 1/8 second, and the lamp will flash.
CONTROLS:
BATTERY LIFE: typically 600 hours with alkaline batteries (battery condition can be checked on meter)- Rotary Selector: switches between instrument off, battery check, ranges: x1, x10, x100, x1000
- Response Switch: toggles between FAST (4 seconds) or SLOW (22 seconds) from 10% to 90% of final reading
- Reset Pushbutton: to zero meter, and also re-accumulate background data and recalculate the alarm point
- Audio Switch: for audio on/off, built-in unimorph speaker, greater than 60 dB at 0.6 meters (2 ft)
- Calibration Controls: accessible from front of instrument (protective cover provided)
SIZE: 22.2 x 21.6 x 21.3 cm (8.8 x 8.5 x 3.4 in.) (H x W x D) with handle
WEIGHT: 2.3 kg (5.1 lb), including batteries
WEIGHT: 2.3 kg (5.1 lb), including batteries
