Ludlum Model 375P-336

Radiation Waste Monitor

The Ludlum 375P-336 Radiation Waste Monitor is the latest solution to hospital radioactive waste management. The plastic scintillation detectors are much more compact and sensitive than the larger, more awkward NaI probes. For outdoor use, the system can be modified to be weather-proof. If desired, the system can be modified to be connected with the facility computer network. The basic system includes the lightweight Model 375 Electronics and two 168 in (2753 cm) Plastic Detectors with 200'(61m) cables. A 10 Ci Check Source is included to for periodic testing. Options include strobe lights, extra alarms, time/date printers, ethernet kit, software, and even cameras. For rugged environments (i.e. loading docks), consider this system with shielded 1"x3" NaI Scintillation detectors: Model 375-30.

Newer models are now available, with full color display, larger detectors, and interactive touchscreen GUI.

Model 375-336 Area Monitor System Includes:

Model 375-336 Accessories:

Date/Time Printer 
Red Alarm Strobe

Indicated Use: Area Monitoring
Detector: 2 ea. 168 in plastic scintillation detectors
Display: 4 digit LED display with 0.8" (2 cm) digits
Range: 0.1 - 9999 kcps
Linearity: Reading within 10% of true value with detector connected
Response: Typically 3 seconds from 10% - 90% of final reading
Status: (green light) instrument functioning properly
Sigma Alarm: Indicated by red ALARM light and audible tone (can be set at any point from 0.0 - 9999 kcps)
Sum Alarm: Indicated by red ALARM light and audible tone (can be set at set at any point from 0.0 - 9999 kcps)
Note: Audible alarm indicators can be configured as a single beep if desired
Det Fail: (red light and audible tone; greater than 68 dB at 2 feet) indicates detector overload, no count from detector, or instrument failure
Low Bat: (yellow) indicates less than 2 hours of battery power remaining
Overload: Senses detector saturation (indicated by display reading "-OL-")
Overrange: Indicates radiation field being measured has exceeded counting range of instrument  (indicated by display reading "____")
Relay Output: Mains (120 or 280 VAC) output on alarm
Data Output: 9 pin connector providing 5 decade logarithmic output, RS-232 output, signal ground connection, FAIL and ALARM signals (current sink), and direct connection to battery and ground
Remote (optional): Model 271 or 272 remote units
Calibration Controls: Accessible from front of instrument (protective cover provided)
Power: 95 - 135 VAC (178 - 240 VAC available), 50-60 Hz single phase (less than 100mA),
6 volt sealed lead-acid rechargeable battery (built in)
Battery Life: Typically 48 hours in non-alarm condition; 12 hours in alarm condition
Battery Charger: Battery is continuously trickle charged when instrument is connected to line power and turned on.
Construction: Aluminum housing with ivory powder coat paint
Temperature Range: 5F(-15C) to 122F(50C)
May be certified to operate from -40F(-40C) to 150F(65C)



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