Model 14C Survey Meter

External and Internal Probe

Ideal for Nuclear Medicine

Model 14C Survey Meter Model 14C Control Panel

This general purpose, handheld analog ratemeter supports operating two separate radiation detectors. A switch allows the user to select between the internally mounted GM detector with an exposure range of 0 - 20 mSv/h (0 - 2000 mR/hr) or an external GM or scintillator detector of choice (see table below).

The cast aluminum instrument housing, with its separate battery compartment and accompanying metal handle, offer an industrial robustness and quality that promote long-lasting protection and instrument life. The front-panel controls include a rotary switch for selecting the five-decade range and instrument shut-off, an audio on/off switch, a fast/slow response switch, a high voltage display button, and a battery test button.

The analog meter face comes in a variety of options to support the measurement units and ranges for the additional external detector selected. A one meter (39 in.) straight type detector cable with "C" style connector is included in the price of the instrument.

Application Alpha, Beta, and Gamma surveying
Internal Detector Energy compensated GM (used with ×1000 scale only)
Range 0 to 20 mSv/hr (0 to 2000 mR/hr)
Sensitivity 200 cpm per mR/hr
Compatible External Detectors Any GM or Scintillation type operating on 900 VDC (see Compatible Detectors tab)
Detector Channels External Detector: ×0.1 through ×100 range settings
Internal GM Detector ×1000 setting
Energy Response Within 15% of true value between 60 keV to 3 MeV (internal detector only)
Linearity Reading within 10% of true value with detector connected
Meter Dial 0 - 2 mR/hr, 0 - 5 kcpm, BAT TEST
Meter 6.4 cm (2.5 in.) arc, 1 mA analog type
Controls
Rotary Selector Switch Switches between: Off; Ranges: ×0.1, ×1, ×10, ×100, ×1000
Response Switch Toggles between FAST (4 s) or SLOW (22 s) from 10% to 90% of final reading
Reset Push Button Zeroes meter
Battery Push Button Checks battery status
Audio Switch Audio on/off, built-in unimorph speaker, greater than 60 dB at 0.6 m (2 ft)
High Voltage 900 Vdc
Threshold -40 mV to 10 mV
Temperature Range -20 to 50 °C (-4 to 122 °F)
Relative Humidity < 95%
Power 2 each "D" cell batteries (housed in an externally accessible sealed compartment)
Battery Life Typically greater than 2000 hours (battery condition can be checked on meter)
Construction Cast and drawn aluminum with beige powder coat
Connector Series "C" (others available)
Size (H x W x L) 16.5 × 8.9 × 21.6 cm (6.5 × 3.5 × 8.5 in.)
Weight 1.6 kg (3.5 lb), including batteries

Ludlum Model 14C manual

Manual