The LFM-2 is specifically designed to monitor hospital wastes in a simple, easy-to-use radiation monitor. Temperature resistant, rugged detectors will alert the user of contaminated waste before it reaches the waste disposal site.
Product Detail
The LFM-2 is designed to maximize sensitivity, with a minimum of nuisance alarms, at an affordable price. Except for its larger, more sensitive detectors, the LFM-2 is the same as the many (over 200) Thermo Scientific systems in use at landfills, incinerators and hospitals.
The system consists of two shielded, 50.8 mm (2 in.) diameter, Nal(TI) scintillation detectors shock mounted in separate, weatherproofed PVC housings. Cables connect the detectors to an easy-to-read digital readout electronics package. The detectors are constructed to withstand temperature extremes. They also have low mass housings to detect low energy gamma isotopes, as well as those with medium and high energies.
Detectors
Radiation Detected: Low, medium and high energy gammas and X-rays (>20 keV), including 125I and 99mTc as well as 67Ga, 137Cs, 60Co and 226Ra. Sensitivity: Will detect a 75 mCi 137Cs source at 10? from a detector within 15 seconds in a constant 10 mR/h background. Detector Complement: 2 each, 2? diameter, Nal(TI) scintillation detectors with low mass housings, constructed to withstand temperature extremes; they are also thermally insulated, lead-shielded and shock-mounted within special housings. Detector Housings: Weatherproofed, painted PVD housings with liquid-tight, strain relief connectors; suitable for outdoor use (ref. drawing #109300).
0-200,000 cpm in two linear ranges. Factory set for 20,000 cpm full scale
Accuracy :
Within 5% of reading above 20% of full scale
Response Time :
Signal - continuously adjustable from 2 to 20 seconds; LCD display - less than 2 seconds in Alarm Set, Bat, and HV modes; and 6 seconds in Rate mode
Power Requirements :
10-125V AC, 50-60 Hz
Battery :
Rechargeable gelled cell that provides 12 hours (minimum) of backup operation between charges
Recharge :
Regulated, 16 hours when batteries have reached 10.0V DC on the LCD display; charging automatic whenever unit is connected to AC line
Battery Dependence :
Less than 10% change in reading from fully charged to 10.0V DC
LCD Display :
3 1/2 digit display (1999) with 0.7" (1.8 cm) high digits
High Voltage :
Factory set for 900V DC; supplied to all detectors
Detector Status :
Two green LCDs illuminate whenever detector activity is sensed; one LED is assigned to each detector. LED turns off if corresponding detector does not produce any activity for a 15 second period; non-latching
Switch selectable to provide an audible "click" for each detector pulse and an audible alarm above the alarm set point, an audible alarm only, or disable audio output
Audio Volume :
Adjustable when audio switch is in the "pulse" position; disabled (full volume) whenever an alrm condition occurs, or when audio switch is in the "alarm" position
Alarm :
Audible, non-latching rate alarm with front panel adjustment from 10% to 30% of full scale with readout on the LCD display; red LED alarm indicator on front panel
Display Reset :
Pushbutton switch that quickly zeroes the LCD display; red LED alarm indicator on front panel
Recorder Output :
Rear panel BNC connector; provides 100 mV signal for a full scale (20 kcpm or 200 kcpm) LCD display reading. The output will drive 100 kohm loads
Temperature :
Operational from +4oF to +122oF (20oC to 50oC)
Size :
Ten inches wide x 2.8" high x 7.8" deep (25.4 x 12.2 x 19.8 cm) including casetop handle, excluding all probes and cables
Weight :
5.5 lb (2.5 kg) excluding all probes and cables
Construction :
All aluminum case with textured polyurethane paint finish and silkscreened nomenclature
Detector Connectors :
2 MHV on back panel for the scintillation detectors
0 Items 
