2016 Pricing

MONITOR 4 w/case PRICE    $375

MONITOR 4EC w/case

PRICE    $415
NIST CALIBRATION PRICE    $  77
OBSERVER SOFTWARE + SERIAL CABLE
For Monitor 4 and Monitor 4EC
ORDER HERE
SI METER OPTION - ON REQUEST PRICE    N/C
DOWNLOAD MANUAL HERE
NOTE:
The USB versions of the Monitor 4 and Monitor 4EC have been discontinued.  The current versions of Monitor 4 and Monitor 4EC have standard serial output ports, such that data can be displayed on a computer using the optional Observer Software adn Cable.

Monitor 4 & 4EC Handheld Radiation Alert« Detector
a y x
New ergonomic design. The Monitor 4 and Monitor 4 EC are compact, general purpose survey meters capable of detecting alpha, beta, gamma, and x-rays over 3 selectable ranges. A red count light flashes and a beep sounds with each event detected. The Monitor 4EC offers a more linear reading for gamma and x-rays (above 40 keV).

Specifications

Detector
Monitor 4: Halogen-quenched uncompensated GM tube with thin mica window 1.5-2.0 mg/cm2 thick. Monitor 4EC: Halogen-quenched GM tube, energy compensated sidewall 2mm tin filter. Thin mica window 1.5-2.0 mg/cm2 thick.

Display

Analog Meter holds full scale in fields as high as 100X max reading.
Operating Range
0-50 mR/hr and 0-500, 0-5,000, 0-50,000 CPM or 0-500 ÁSv/hr

Range Switch
X1, X10, X100.

Monitor 4 Energy Sensitivity

Monitor 4 detects alpha down to 2.5 MeV; typical detection efficiency at 3.6 MeV < 80%. Detects beta at 50 keV with 35% efficiency. Detects beta at 150 keV with 75% efficiency. Detects gamma and x-rays down to 10 keV through the window, 40 keV minimum through the sidewall. Normal background is approximately 10-20 CPM.

Monitor 4EC is the Same as Monitor 4 except the energy response for gamma and x-rays through the detector sidewall is flat within +61% or -26% over the range of 40 keV to 100 keV, and within +35% or -17% over the range of 100 keV to 1.3 MeV.

Gamma Sensitivity: Operating Range
1000 CPM/mR/hr (referenced to Cs-137)
Energy Sensitivity for the 4EC is the Same as Monitor 4 except the energy response for gamma and x-rays through the detector sidewall is flat within +61% or -26% over the range of 40 keV to 100 keV, and within +35% or -17% over the range of 100 keV to 1.3 MeV.
0-.5, 0-5, 0-50 mR/hr
0-500, 0-5,000, 0-50,000 CPM or 0-500 ÁSv/hr
0-50 mR/hr.
Range Switch
X1, X10, X100, Battery Check.
Accuracy
Typically ▒15% of reading (referenced to Cs-137)


Monitor 4


Monitor 4EC

 

Accuracy
▒15% of full scale (referenced to Cs-137)


Audio

Internally mounted beeper (can be turned
off for silent operation).
Power Requirements
9-volt alkaline battery up to 2,000 hrs at
normal background
Temperature Range
-20░ C to 55░ C (-4░ F to 131░ F).

Weight
Monitor 4: 223.9 grams (7.9 oz) without battery
Monitor 4EC: 245.7 grams (8.7 oz) without battery
Outputs
1/8 inch headphone jack with pulse out.
Size
210 x 70 x 48 mm (8.25 x 2.75 x 1.875 in.)

Accessories
Observer Software,  SI Meter Option, NIST Calibration

 
 

Warranty
1 year limited warranty

                            RADIOACTIVE MINERALS


Copyright 1998-2016 by Mineralogical Research Co.
All rights reserved.