 Ludlum Model
9-7
High Range
Radiation Ion Chamber
 Features
Standard
"D" Size Batteries
Separate
Battery Compartment for Field
Replacements
Eliminated Mechanical Switch
Backlit LCD
Introduction
The Ludlum Model 9-7 Radiation Ion Chamber Display
Unit is a digital readout and control unit that can be attached to any
compatible ion chamber (sold separately). This instrument is a direct
replacement for the discontinued Eberline Model RO-7 and will work with any
of the existing Eberline RO-7 series detectors, extensions and cables.
This instrument provides remote monitoring in high
range beta and gamma radiation fields. The gamma measurement range is .001
R/hr to 20,000 R/hr covered by three separate detectors. The 9-7
automatically recognizes which detector is connected so no recalibration or
adjustment is required whenever switching detectors. These ion chambers can
either be connected directly to the instrument or via rigid extensions,
flexible cables or both to facilitate the length required. The detectors
will remain functional with extensions/cables up to 500’ in length.
The instrument display and controls are very similar
to the original RO-7 to minimize any procedural changes or re-training. The
backlit LCD display presents three large 0.5” sized characters together with
a floating decimal point to indicate the measurement along the R/hr scale.
When connected to the highest range detector, a separate kR/hr indicator is
prominently illuminated to warn the operator of the higher scale in use. A
rotary switch for selecting instrument On/Off and battery status, a LCD
backlight switch, and zero adjust knob are the extent of the external
operator controls.
Specifications
PART NUMBER:
48-3689
DISPLAY:
Liquid Crystal Display (LCD), 3 1/2 digits,
0.5”High
(1.3cm). Includes, decimal point and minus
sign. Backlit
illumination provided by activating separate user-controllable switch.
RESPONSE TIME:
Approximately 2.5 seconds to 90 percent of
final reading on all ranges
EXTERNAL
CONTROLS:
-
3 position
rotary switch for instrument off, battery test and instrument on
-
Zero control
-
Display
backlight on/off switch
INDICATORS:
-
Low Battery
Alert
-
kR/h Range
Active
BATTERY
COMPLEMENT: Two “D” cell batteries
BATTERY LIFE:
160 hours.
CONSTRUCTION:
Painted aluminum case with separate battery
compartment and accompanying front access door. Includes folding tripod stand
and carrying handle.
SIZE:
9.3” H x 4.1” W x 8.75” L (23.6 x 10.4 x 22.2 cm)
WEIGHT:
2.7 lbs. (1.2 kg)
TEMPERATURE:
-4 to 1300 F (-20 to 550 C)
COMPATIBLE
DETECTORS:
-
Ludlum
Models: 9-7-LD, 9-7-BM, 9-7-BH
-
Eberline
Models: RO-7-LD, RO-7-BM, RO-7-BH
Available Detectors
Model 9-7-LD
Low Range Detector (Gamma only)
Part Number:
47-3693
Range: 0.001 to
1.999 R/hr
Resolution:
0.001 R/h (1 mR/hr)
Linearity: ± 5
percent
Size: 1.5” Dia
x 8.2” Long (3.8 cm x 20.8 cm)
Chamber Volume:
50 cm3
Model 9-7-BM
Mid-Range Detector (Beta/Gamma)
Part Number:
47-3694
Range: 0.1 to
199.9 R/hr
Resolution: 0.1
R/h (100 mR/hr)
Linearity: ± 5
percent
Size: 1.5” Dia
x 4.6” Long (3.8 cm x 11.7 cm)
Chamber Volume:
7 cm3
Model 9-7-BH
High Range Detector (Beta/Gamma)
Part Number:
47-3695
Range: 0.01 to
9.99 kR/hr
Resolution:
0.01 kR/hr (10 R/hr)
Linearity: ± 10
percent
Size: 1.5” Dia
x 4.6” Long (3.8 cm x 11.7 cm)
Chamber Volume:
7 cm3
Options
-
Model 9-7-C15 15 ft. Flexible Cable
(8293-689-15)
-
Model 9-7-C30 30 ft. Flexible Cable (8293-689-30)
-
Model 9-7-C60 60 ft. Flexible Cable
(8293-689-60)
-
Model 9-7-RX2 2 ft. Rigid Extension
-
Model 9-7-RX5
5 ft. Rigid Extension
-
Model 9-7-UWH
Underwater Housing with 60 ft cable
Technical Information
Other Ludlum Products
Ludlum Information
For more information or to request a quotation,
please contact us
by phone at: (865)
947-5123 or by email at:
sales@deqtech.com.
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