Model 2241-3RK Response Kit

Model 2241-3RK Response Kit

Auto-ranging Digital Display
Display in CPM and mR/hr
4 Complete Detector Setups
Scaler
Alpha Beta Gamma Pancake G-M Detector
1" X 1" NaI(Tl) Gamma Scintillator
High Range Energy Compensated G-M
Check Source with holder

PART NUMBER:48-3189

DETECTORS: Model 44-9 Pancake G-M, Model 44-2 Gamma Scintillator, Model 133-7 High Range Energy Compensated G-M
CONTROL SWITCH: A 5 position rotating switch to allow for quick change between four detector setups
CONNECTOR: Series "C" (others available on request)
AUDIO: Built in unimorph speaker with ON/OFF switch (greater than 60 dB at 2 feet)
ALERT/ALARM: Indicated by enunciator on display and audible tone
DISPLAY: 4 digit LCD display with 0.5"(1.3cm) high digits, separate enunciators for display units, alert, alarm, low battery, detector overload, counting overflow, and scaler counting
BACKLIGHT: Push-button to activate
RATEMETER: Can display in R/hr, Sv/hr, cpm, or cps when control switch is in RATEMETER position
DISPLAY RANGE: Auto ranging from 0.0 microR/hr - 9999 R/hr; 0.000 microSv/hr - 9999 Sv/hr; 0 cpm - 999k cpm; or 0 cps - 100k cps
LINEARITY: Reading within plus or minus 10% of true value with detector connected
SCALER: Activated by push-button in handle (count time adjustable from 1 - 9999 seconds in 1 second intervals)
CALIBRATION CONTROLS: Accessible from front of instrument (protective cover provided)
HIGH VOLTAGE: Four independent controls; each adjustable from 200 - 2500 volts
DISCRIMINATOR: Adjustable from 2 - 100 mV
OVERLOAD: Indicated by OVERLOAD on display (adjustable depending on detector selected)
RESET: Push-button to zero display, acknowledge and/or reset alarm
POWER: 2 each "D" cell batteries (housed in sealed compartment that is externally accessible)
BATTERY LIFE: Typically 200 hours with alkaline batteries (low battery indicated on display)
CONSTRUCTION: Cast and drawn aluminum with beige polyurethane enamel paint
TEMPERATURE RANGE: -4° F(-20° C) to 122° F(50° C)
May be certified for operation from -40° F(-40° C) to 150° F(65° C)
SIZE: 6.5"(16.5cm)H X 3.5"(8.9cm)W X 8.5"(21.6cm)L
WEIGHT: 3.5 lbs (1.6kg) including batteries

If special calibration requirements are not initially specified, calibration will be made based on the default settings shown below:

Det#1 Det#2 Det#3 Det#4

                   Color Dot:
               Probe model:
           Units/Timebase:
                 Rate Alarm:
                   Rate Alert:
               Scaler Alarm:
         Scaler count time:

Red
44-9
cpm
50 kcpm
20 kcpm
85000
12 sec.

Yellow
44-2
R/hr
50 µR/hr
20 µR/hr
85000
12 sec.

Blue
133-7
R/hr
5 R/hr
2 R/hr
85000
12 sec.

White
44-9
R/hr
5 mR/hr
2 mR/hr
85000
12 sec.

The following parameters are adjusted by removable switchboard. Once initial setup and calibration have been completed the switchboard can be removed without affecting normal operation of the instrument (Model 2241-2 may be ordered without switchboard)

BACKLIGHT "ON" TIME: 5, 30, 60, 90, 180, or 240 seconds for the backlight to stay "ON" when activated.
SET MINIMUM DISPLAY: Allows lower limit of auto-ranging display to be fixed. For example, display can be set to not show values less than 1 R/hr.
RS-232 DATA DUMP MODE: Enables or disables dump mode to RS-232 port. When enabled data will be dumped every 2 seconds
RS-232 DETECTOR SETUP MODE: Allows for detector parameters to be input by RS- 232 port
BAUD RATE: 150, 300, 600, 1200, 2400, 4800, 9600, or 19200 bps.
DEAD TIME: Adjustable from 0 - 9999 seconds
CALIBRATION CONSTANT: Adjustable from 0.001 - 280 X 109 counts/display unit
DISPLAY UNITS: Can read in R/hr, Sv/hr, cpm, or cps
TIME BASE: Can read in seconds or minutes
AUDIO DIVIDE: 1, 10, 100, or 1000 events-per-click
RESPONSE:
FIXED: FAST response time adjustable from approximately 2 - 50 seconds. SLOW response is 5 times fast setting
VARIABLE: Dependent on number of counts present. Typical times FAST - 4 - 25 seconds, SLOW - 4-60 seconds
(All times stated from 10% to 90% of final reading)
RATEMETER ALERT/ALARM: Set at any point corresponding to pre-selected ratemeter range
SCALER ALARM: Adjustable from 1 - 999999 counts
SCALER COUNT TIME: Adjustable from 1 - 9999 seconds

Model 44-9 Detector

INDICATED USE: Alpha beta gamma survey; Frisking
DETECTOR: Pancake type halogen quenched G-M
WINDOW: 1.7 plus or minus 0.3 mg/cm² mica
WINDOW AREA:
Active - 15 cm²
Open - 12 cm²
EFFICIENCY(4pi geometry): Typically 5%-C-14; 22%-Sr-90/Y-90; 19%-Tc-99; 32%-P-32; 15%-Pu-239
SENSITIVITY: Typically 3300 cpm/mR/hr (Cs-137 gamma )
ENERGY RESPONSE: Energy dependent
DEAD TIME: Typically 80 microseconds
COMPATIBLE INSTRUMENTS: General purpose survey meters, ratemeters, and scalers
OPERATING VOLTAGE: 900 volts
CONNECTOR: Series "C" (others available )
CONSTRUCTION: Aluminum housing with beige polyurethane enamel paint
TEMPERATURE RANGE: -4° F(-20° C) to 122° F(50° C)
May be certified for operation from -40° F(-40° C) to 150° F(65° C)
SIZE: 1.8" (4.6 cm)H X 2.7" (6.9 cm)W X 10.7" (27.2 cm)L
WEIGHT: 1 lb (0.5kg)

Model 44-2 Detector

INDICATED USE: High energy gamma detection
SCINTILLATOR: 1" (2.5 cm) diameter X 1" (2.5 cm) thick sodium iodide (NaI)Tl scintillator
SENSITIVITY: Typically 175 cpm/microR/hr (Cs-137)
COMPATIBLE INSTRUMENTS: General purpose survey meters, ratemeters, and scalers
TUBE: 1.5:(3.8cm) diameter magnetically shielded photomultiplier
OPERATING VOLTAGE: Typically 500 - 1200 volts
DYNODE STRING RESISTANCE: 100 megohm
CONNECTOR: Series "C" (others available )
CONSTRUCTION: Aluminum housing with beige polyurethane enamel paint
TEMPERATURE RANGE: -4° F(-20° C) to 122° F(50° C)
May be certified for operation from -40° F(-40° C) to 150° F(65° C)
SIZE: 2" (5.1 cm) diameter X 7.3" (18.5 cm)L
WEIGHT: 1 lb (0.5kg)

Model 133-7 Detector

INDICATED USE: High range gamma measurements
DETECTOR: Halogen quenched G-M
LINEAR RANGE: 25 mR/hr - 100 R/hr
SENSITIVITY: 4.2 cpm/mR/hr (Co-60 gamma)
ENERGY RESPONSE: Within ±15% of true value
CONSTRUCTION: Anodized aluminum housing
TEMPERATURE RANGE: -4° F(-20° C) to 122° F(50° C)
May be certified to operate from -40° F(-40° C) to 150° F(65° C)
SIZE: 1" (2.5 cm) diameter X 4" (10.2 cm)L
WEIGHT: 0.2 lb (0.07kg)

Model 2241-3 Display