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  • Ludlum Model 375 Dual Channel Area Monitor Controller
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Original price was: $4,040.00.Current price is: $2,020.00.

The Model 375-Dual is a dual-channel digital area monitor controller based on the legacy version of the Model 375. It consists of two Model 375 controllers in one wall-mount chassis, each with its own detector connection. A common application is gamma and neutron monitoring: one controller monitors gamma radiation and the other monitors neutron radiation. This instrument may also be used to monitor radiation in two separate locations when used in conjunction with appropriate external detectors.

1 in stock

SKU: 214772029-3 Product Type: Vendor:

Each controller features a four-digit LED display that is readable from 9 meters (30 feet) away. Backlit indicators on each instrument warn of low radiation alarm (yellow), high radiation alarm (red), instrument failure (red), and low battery (yellow). A green status light indicates the instrument is functioning properly. Calibration parameters are stored in non-volatile memory and protected under calibration covers on each controller.

Indicated Use Area monitoring
Compatible Detectors GM, proportional, scintillation, neutron
Display 2 each 4-digit LED displays with 2 cm (0.8 in.) character height
Display Range 000.0 to 9999
Display Units Can be made to display in µR/hr, mR/hr, R/hr, µSv/h, mSv/h, Sv/h, µrem/hr, mrem/hr, rem/hr, cpm, cps, and others
Linearity Reading within 10% of true value
Response Typically 3 seconds from 10% to 90% of final reading
Status Indicators
  • Status: green light indicates instrument is functioning properly
  • Low Alarm: yellow light (LOW ALARM) and slow beep (1 per second). Can be set at any point from 0 to 9999.
  • High Alarm: red light (HIGH ALARM) and fast beep (4 per second). Can be set at any point from 0 to 9999.
  • Detector Fail: red light (DET FAIL) and constant audible tone > 68 dB at 61 cm (2 ft). For conditions of detector overload, no count from detector, or instrument failure.
  • Low Bat: yellow light (LOW BAT). Indicates less than two hours of battery life remaining.
  • Overload: display reading of “–OL–” and audible FAIL alarm indicate detector saturation
  • Overrange: display reading of “– – – –” and activated low and high alarms indicate that the radiation field being measured has exceeded the counting range of the instrument
High Voltage Adjustable from 200 to 2500 V
Threshold Adjustable from 2 to 100 mV
Dead Time Adjustable to compensate for dead time of detector and electronics (can be read on display)
Data Output Nine-pin connector providing five-decade logarithmic output, RS-232 output, signal ground connection, FAIL, and ALARM signals (current sink), and direct connection to battery and ground
Calibration Controls Accessible from front of instrument (protective cover provided)
Remote Display Can be connected to Model 271 or Model 272 remote display units (see remote display options)
Power 95 to 135 Vac (178 to 240 Vac available), 50 to 60 Hz single phase (less than 100 mA), 6-volt sealed lead acid rechargeable battery (built in)
Battery Life Typically 18 hours in non-alarm condition
Typically 5 hours in alarm condition
Battery Charger Battery is continuously trickle-charged when instrument is connected to line power and turned on
Connector Series “C” (others available)
Construction Wall mount aluminum housing with ivory powder coat finish
Temperature Range -20 to 50 °C (-4 to 122 °F)
May be certified for operation from -40 to 65 °C (-40 to 150 °F)
Size (H x W x L) 18.8 x 45.2 x 6.4 cm (7.4 x 17.8 x 2.5 in.)
Weight 5.9 kg (13 lb)

Additional information

Weight 11 lbs
Dimensions 20 × 10 × 6 in
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