HP-290
9
GM Probes
This is a higher range GM probe with
energy compensation, providing reli-
able exposure rate measurement.
Used for Beta/Gamma exposure sur-
veys. This probe can be matched with
Thermo's portable survey meters,
such as the ASP-2, E-600, RM-25,
Surveyor or Electra/Delta series.
• Detector range: 60 R/h (with Dead
time correction)
• Operating voltage: 550 V ±50V
• Wall material: Stainless
steel
• Wall thickness: 90
mg/cm² (tube only)
• Operating temp:
-40 ºC to 63 ºC
(-40 ºF to 146 ºF)
• Housing: ABS plastic
• Connector: BNC
This hand probe pro-
vides a sensitive beta
detector, featuring a
"Pancake" GM tube with
a thin mica window. It is
designed for contamina-
tion surveys on person-
nel, table tops, floors,
equipment, etc. This probe can be matched
with Thermo's portable survey meters, such
as the ASP-2, E-600, RM-25, Surveyor or
Electra/Delta series. Please also refer to the
ECPGM and PGM probes
• Application: Alpha/Beta/Gamma surveys;
frisking
• Operating voltage: 900 V ±50V
• Beta/Gamma efficiency: 22%
137
Cs, 16%
60
Co
• Operating temp: -30 ºC to 60 ºC
(-22 ºF to 140 ºF)
• Housing: ABS Plastic
• Connector: BNC
A high range energy compensated
GM probe for Ambient Dose
Equivalent fitted with a priming
source, multiway cable and Fischer
connector. (Operates at +575V).
This probe can only be used with
Thermo's portable survey meter, the
Selectra.
• Operating HV: 550 V
• Sensitivity: 33 s
-1
per mSvh
-1
• Energy range: ±10%
HP-360
IGP24A/Sv
•
Sensitivity:
140 cps per mSv/h,
137
Cs
The MC71 a sensitive, energy compen-
sated GM detector with a low intrinsic
background, used for low level sur-
veys. This probe can be matched with
Thermo's portable survey meters,
such as the ASP-2, E-600, RM-25,
Surveyor or Electra/Delta series.
The MINI 6-80 Environmental Gamma
Radiation Meter is a portable counting
system for the determination of low
level gamma radiations. It consists of
the high sensitivity, MC71 GM tube, 6-
80 Scaler Ratemeter, cable, mounting
tripod and carrying case. It is used
extensively by nuclear plants and
local authorities as a reliable means of
measuring environmental gamma lev-
els. The MINI 6-81 is a weatherproof
version.
• Sensitivity figures:
137
Cs, 15.7 s
-1
µGy
-1
4h;
226
Ra, 18.5 s
-1
µGy
-1
h
• Inherent background count rate:
0.25 s
-1
(typ)
• Energy range, 55 keV to >1.2 MeV
• Statistical accuracy: ±3% measuring
0.06 µGyh
-1
over 1000 s.
• Meter: 75 mm, logarithmic, scaled
0.05 µGyh-1 to 75 µGyh
-1
• Scaler: LCD display, 6 digits plus
overflow and count in progress indi-
cation
• Timer: 7 presettable periods, 10 s to
1,000 s, plus no limit
• Recorder output: analog, 0–0.5 V at 1
mA
• Battery life: 400 h at 4 h per day
MC71/MINI 6-80 and 6-81
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