Monitor 200

The Monitor 200 measures alpha, beta, gamma, and x-rays. Its digital display shows readings in your choice of CPM, CPS, μSv/hr, mR/hr, or in accumulated counts. It has a digital display, a red count light, and a beeper that sounds with each count detected. Other features include an adjustable timer, and selectable alert. With the free Observer USB Software Family, you can set computer alarms, and download your collected data from the internal memory for easy reporting!

Operation Manual English | Español | PDF Quick Specs | Quick Start Guide (Ranger)

Contact For Pricing and Availability

 

Detector

Halogen-quenched GM tube with thin mica end window. Mica window density 1.5-2.0 mg/cm2. Effective window diameter is .360 inch. Side wall is .012 inch thick.

Operating Range

mR/hr – .001 (1µR) to 200 mR/hr
µSv/hr – .01 to 2000
CPM – 0 to 235,400
CPS – 0 to 3923
Total Counts – 1 to 9,999,000 counts

Accuracy

Monitor 200 Detector Window

Typically ±15% from factory, ±10% (NIST)Energy Sensitivity1070 CPM/mR/hr referenced to Cs137
Detects alpha down to 2.5 MeV; typical detection efficiency at 3.6 MeV is greater than 80%.
Detects beta at 50 keV with typical 35% detection efficiency.
Detects beta at 150 keV with typical 75% detection efficiency.
Detects gamma and x-rays down to 10 keV typical through the window, 40 keV minimum through the case.

Anti-Saturation

Readout will OVERRANGE in radiation fields as high as 100 times the maximum reading.

Selectable Alert Set Range

mR/hr .001 – 100 and CPM 1 – 350,000. Pulsating beeper sounds the alert. Adjustable alert levels are used for mR/hr / CPM, and µSv/hr / CPS. 70db @ 1m. Alarm will sound when in Timer Mode when set alarm threshold is reached.

Monitor 200 & Monitor 4 Energy Response To Gamma Cs137

Outputs


USB for use with Free Observer USB Software for PCs
Bluetooth for use with the Observer BLE app for Android OS

Display

Graphic LCD with Backlight.

Includes

Carrying Case, Xtreme Boot, Lanyard, Stand, Batteries, Mini-USB Cable, Observer USB Software Download, Certificate of Conformance

Options

NIST Calibration

Limited Warranty

1 year limited warranty

Count Light

Red LED flashes with each count.

Audio Indicator

Sounds with each count (can be switched off for silent operation)

Power Requirements

Two AA alkaline batteries (included). Approx. 800 hrs @ background.

Temperature Range

-10° to 50°C (14° to 122°F)

Size

140 X 68 X 33 mm (5.5 X 2.7 X 1.3 in.)

Weight

181 g (0.4 lbs.)

 

Accessories / For The Ranger Radiation Detector, Survey Meter, and Geiger Counter