Model 375P-336 Waste Monitor

Hospital Radioactive Trash Monitoring

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Features

The Model 375P-336 Series are monitoring systems that consist of a Model 375P digital controller coupled with two lead shielded 2753 cm 3 (168 in 3 ) plastic scintillation detectors. The Model 375P-336 is designed for indoor applications, while the Model 375P-336‑1L has detectors housed in waterproof enclosures that can be mounted outdoors. The Model 375P controller is not weatherproof and must be mounted either indoors or within an environmental enclosure (available separately).

These simple and cost-effective solutions offer a system that is easy to operate and maintain. The controller supplies local alarms but can also be connected to external alarms or put onto an Ethernet network if desired. Each system has a 24-hour batter backup to keep it operational in the event power is lost.

Medical Application

The Model 375P-336 Series are ideal for monitoring personnel or laundry for possible contamination in a nuclear medicine department. The monitor may also be used as a radiation contamination triage device to alert emergency department personnel of potentially contaminated patients or equipment coming into the emergency room. In environments where equipment, carts, or other traffic may strike and damage the detectors, Ludlum Measurements encourages the use of an optional protective rail (PN 2311167).

Surface Contamination Inspection

Inspecting items using handheld instruments can be too time consuming in many cases. The Model 375P-336 Series facilitate more rapid and uniform inspections by placing two relatively large scintillation detectors in close proximity to incoming or outgoing articles undergoing inspection. Both detectors are continuously monitored by the digital controller so any contaminated item can immediately trigger an alarm. Alarm conditions can be set up to automatically halt production conveyance devices, notify the central office, and even alert key personnel to initiate an immediate response.

Also Available

Model 375P-336V & Model 375P-336-1LV: These versions include IR sensors that prevent the unit from alarming unless something is passing between the detectors and the alarm threshold has been exceeded.

Detectors 2 ea. 2753 cm3 (168 in3) plastic scintillation detectors. Each detector has 3 mm (0.125 in.) thick lead shielding on the back and sides and is supplied with a 15.2 m (50 ft) coaxial cable.
Typical Sensitivity (137Cs) 200 cps per µR/hr per detector
Display 4-digit LED display with 2 cm (0.8 in.) digits
Range 0.1 to 9999 kcps
Linearity Reading within 10% of true value
Status Indicators

Alarm Response Time 2 seconds or less, based on internal dip switch setting
Relay Output Mains (120 or 240 Vac) output on alarm, 9-pin connector providing 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)
Power 95 to 135 Vac (178 to 240 Vac available), 50–60 Hz, 6 V sealed lead-acid rechargeable battery (built-in)
Battery Life Typically 24 hours in non-alarm condition, 6 hours in alarm condition
Battery Charger Battery is continuously trickle-charged when instrument is connected to line power and turned on
Construction Electronics: aluminum housing with ivory powder-coat
Model 375P-336 Detectors: aluminum housing with ivory powder-coat
Model 375P-336-1L Detectors: weatherproof aluminum housing with ivory powder-coat
Temperature Range -15 to 50 °C (5 to 122 °F)
Size (H x W x D) Electronics: 26.2 x 24.6 x 8.4 cm (10.3 x 9.7 x 3.3 in.)
Model 375P-336 Detectors (ea.): 104.1 x 17.1 x 5.3 cm (41 x 6.8 x 2.1 in.)
Model 375P-336-1L Detectors (ea.): 104.1 x 17 x 7.6 cm (41 x 6.7 x 3 in.)
Weight Electronics: 4.2 kg (9.3 lb)
Model 375P-336 Detectors (ea.): 11.3 kg (25 lb)
Model 375P-336-1L Detectors (ea.): 14.1 kg (31 lb)

Ludlum Model 375P-336 manual

Manual