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GM-10 Detector

The GM-10 detector is designed for efficient surface monitoring of alpha, beta and gamma radiation contamination on skin, clothing, shoes, laboratory bench tops, floors, equipment etc. It is an ideal detector for maintaining the highest safety standards in laboratory environments, nuclear medicine, molecular biology, radiochemistry, transport of nuclear materials and storage facilities.

A low voltage interface connects the RAM DA 2000 monitor with the probe.The GM-10 uses a pancake GM detector with a thin mica window. This is encased in a rugged, splash proof housing for protection against shock, vibration and humidity. The probe also contains a high voltage power supply, pulse shaper, GM saturation indicator, detector identifier and malfunction detection circuitry. This configuration minimizes noise, improving sensitivity and stability.

Specifications

GM Type:

 

Pancake LND 73118 or equivalent

Window:

 

Mica 1.5 - 2.0 mg/cm2 protected by a fine stainless steel wire mesh

Sensitivity (137Cs):

 

Approximately 350cpm/µSv/hr (3500cpm/mR/hr)

Accuracy:

 

±15% of reading

Count Rate Range:

 

0 - 42kcps

Output Signals:

 

TTL pulses.
Detector status: ID, OK, malfunction, GM saturation

Temperature Range:

 

Operation: -10oC to +50oC (15oF - 122oF)
Storage: -20oC to +60oC (-5oF - 140oF)

Humidity Range:

 

40% to 95% RH (non condensing)

Dimensions:

 

260mm (10.2") length, 70mm (2.8") width, 75mm (2.9") height

Weight:

 

370g (0.8lbs)

Casing:

 

Aluminum, splash proof
 
Performance (surface sensitivity - in contact) Beta Emitting Isotopes

Isotope

Emax (keV)

2p Effic (%)

Sensitivity cpm/Bq/cm2

MDL* Bq/cm2

14C

156

3

15

5

35S

167

8

40

2

147Pm

224

15

75

1

99Tc

290

20

100

0.8

90Sr + 90Y

580 + 2280

50

500

0.2

67GA

900

48

235

0.35

123I

1000

55

280

0.3

36Cl

714

45

210

0.4

210Pb

1160

50

250

0.3

32P

1710

70

330

0.3

51CR

325

0.2

1

75

99mTc

140

5.3

25

3

125I

35

0.5

2.4

32

131I

610

40

190

0.4

230Th

4600

14

65

1.1

241Am

5400

14

65

1.1

*MDL - Minimum detectable level calculations are based on background readings of 1 cps and a confidence level of 99%

Ordering Information

GM-10 - 2" Pancake BAK-1170


Note: Specifications subject to change without notice.



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