Need help?Do you have a question about the Ludlum Measurements 375 and is the answer not in the manual?
General| Operating Temperature | -20°C to 50°C |
|---|---|
| Detector Type | Geiger-Mueller |
| Display | LCD |
| Units | µSv/hr, mR/hr, CPM, CPS |
| Accuracy | ±15% |
| Battery Life | 200 hours |
Covers connecting external detectors and powering up the instrument.
Explains radiation units and how to check instrument parameters.
Guides on setting alarms and returning unit for service.
Details on detector compatibility, display, range, linearity, and response.
Describes alarm types (Low, High, DET Fail) and status indicators.
Covers overload, over-range, data output, relays, and RS-232.
Details on Analog, HV, Discriminator, and Battery Charge adjustments.
Explains usage of dipswitches for CAL MODE, LATCH ALARM, RANGE, and SINGLE BEEP.
Information on RS-232 output and 9-pin remote data connector.
Describes internal relays and external alarm relay box options.
Ethernet, Time/Date Stamp, and RS-232 data format details.
Sigma Alarm Modification and 4-20 mA Output Driver.
Safe operating environment, humidity, temperature, and cleaning instructions.
Explains warning symbols, shock hazards, and proper electrical handling.
Safety precautions for replacing fuses, detectors, and batteries.
Adjusting HV and setting calibration constants, alarms, and dead time.
Details on analog voltage output, discriminator threshold, and battery charge.
Lists complete units, main boards, crystals, and capacitors.
Details transistors, ICs, diodes, switches, potentiometers, and resistors.
Lists connectors, inductors, relays, transformers, and wire.
References to main circuit board and component layout diagrams.
Reference to the overall wiring diagram for the instrument.
To Next Page
