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RAM GENE-1

 
The RAM GENE-1 features the high sensitivity offered by the RAM GENE for surface contamination monitoring, plus offers the additional flexibility of area monitoring. The RAM GENE-1 is equipped with a recessed, internal GM pancake detector using a thin mica window protected by a stainless steel screen. The instrument can be quickly changed to a radiation monitor simply by inserting an aluminum attenuation disk at the front of the detector and selecting a dose unit readout

Features

Large, four digit, continuous ranging, LCD display
Simple, three key operation
Large 1.75" pancake GM detector
Suitable for alpha, beta or gamma contamination detection
Provides gamma area monitoring with aluminum attenuation plate
Unit readouts of count rate (cps or cpm) in contamination mode and (mR/h or µSv/hr) in dose mode
Units of either counts per minute or counts per second
Audible and visual (LED) count rate indication
Smart software provides fast, yet stable response
Dead time correction
Alarms for overflow, low battery and detector failure
Automatic self diagnostic routines
Durable case with splash resistant keypad

Specifications

Display:

 

Large, four digit, continuous ranging, LCD readout for diplay of count rate, dose rate, overflow, low battery, and detector failure

LED:

 

Flashing count rate indication

Audio:

 

Piezo electric element synchronized with count LED

Units:

 

Counts per second (cps) or counts per minute (cpm)
and µSv/hr or mR/hr

Controls:

 

Three key keypad with positive feedback for ON/OFF, RESET and SPEAKER. Key combinations for selecting count rate or dose rate unit displays.

Power Source:

 

Standard 9V alkaline battery - provides approximately 50 hours continuous use with speaker off. Automatic battery check under full load.

Detector:

 

1.75" Pancake GM tube - LND73118 or equivalent

Window:

 

Mica, 1.5 - 2.0 mg/cm2 protected by stainless steel mesh

Count Rate Range:

 

0 - 42,000 cps

Sensitivity:

 

Approximately 5.8 cps/µSv/hr (58 cps/mR/hr) - 137Cs

Measuring Range:

 

5µR/hr to 700mR/hr (0.05µSv/hr to 7mSv/hr)

Display Resolution:

 

0.001mR/hr (0.01µSv/hr)

Background:

 

0 - 1 cps

Temperature Range:

 

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

Humidity Range:

 

40% to 95% RH (non condensing)

Case:

 

High impact ABS

Dimensions:

 

11cm x 6.7cm x 7.4cm (4.3" x 2.6" x 2.9")

Weight:

 

0.340 Kg (0.75 lbs)
 
 

Variation of Response with Particle Energy

Emax < 0.2 MeV – 14C

Emax between 0.2 MeV and 0.5 MeV – 147Pm and 60Co

Emax > 0.5 MeV - 36Cl and 90Sr/90Y

Uncertainty

Response Factor

Instrument Indication (counts s-1)

Activity

(Bq cm-2)

Nuclide

±10%

±10%

±10%

±10%

±10%

±10%

±10%

3.92

3.78

1.63

1.05

1.00

1.26

1.30

277

135

56

19.6

143

27.2

27.9

70.55

35.84

34.62

18.65

142.64

21.57

21.54

90Sr + 90Y

36Cl

60Co

147Pm

14C

241Am

238Pu
* MDL - Minimum Detectable Level calulations are based on background readingof 1 cps and a confidence level of 99%
 

Ordering Information

RAM GENE-1 (units cpm & mR/hr) # 4-0015-01
RAM GENE-1 (units cpm & µSv/hr) # 4-0015-02
RAM GENE-1 (units cps & mR/hr # 4-0015-03
RAM GENE-1 (units cps & µSv/hr) # 4-0015-04
(includes bench stand, operatiing manual and calibration certificate)

Options:

Set of 4 Collimators # A-0050
Belt Hanger (SURF) # A-0170
Belt Hanger (GENE) # A-0180
Polycarbonate Case # A-0300

Note: Specifications subject to change without notice.



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