Ludlum- Model 14C General Purpose Survey Meter

The Model 14C general purpose, handheld analog ratemeter supports operating two separate radiation detectors. This instrument is set for 900-volt GM tube operation and is typically used with an external, thin-wall GM tube or pancake GM. Other external detectors are compatible with the Model 14C, however. An internal energy-compensated, high-range detector is used for the x1000 range only. This detector is active whenever the instrument is on and in a very high radiation field, and it will drive the meter needle to full scale, thus alerting the user. A switch allows the operator to select between the internally mounted GM detector with an exposure range of 0 to 20 mSv/h (0 to 2000 mR/hr) or an external GM or scintillator detector of choice