Ludlum Model 78 Monthly Rental

$402.00
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$402 monthly/$134 weekly

Non-routine instrument setup and/or calibration requests will incur a one-time setup/calibration charge in addition to rental rate noted above.  When this applies, you’ll be informed of the amount of the additional charge at time of order or, if requested, prior to placement of order.

  • Dual Analog and Digital Display
  • 2 Position Range Switch mR/hr (0 - 1,000 mR/hr) & R/hr (0 - 1,000 R/hr)
  • Detector mast extends up to 13 feet
  • Built In Audio with ON/OFF Switch

INDICATED USE:
High activity gamma survey with telescoping detector

WORKING ENVIRONMENT:
Splash proof shields for outdoor use

DETECTORS:
Two energy compensated G-M tubes

ENERGY RESPONSE:
Within plus or minus 15% of true value from 60 keV - 3 MeV

DISPLAY:
4 digit LED display with 0.5"(1.3cm) digits and separate range indicators, and low battery

DISPLAY RANGE:
000.0 - 9999 with indicators of mR/hr and R/hr

BACKLIGHT/RESET:
Temporary action 2 position toggle switch to turn backlight on for predetermined time frame or zero meter and display

METER DIAL:
0 - 1k R/hr 4 decade logorithmic

RANGE SELECTION:
A 2 position toggle switch to select between mR/hr, and R/hr

LINEARITY:
Reading within plus or minus 10% of true value

AUDIO:
Built in click-per-event audio with ON/OFF switch

RESPONSE:
Dependant on counts present. Typical times FAST 4 - 25seconds, or SLOW 4 - 60seconds from 10% to 90% of final reading

POWER:
2 each "D" cell batteries (housed in sealed handle)

BATTERY LIFE:
Typically 250 hours with alkaline batteries (battery failure indicated on display)

METER:
3" (7.6cm) arc, 1 mA analog type

CONSTRUCTION:
Aluminum housing with beige polyurethane enamel paint, and polished stainless steel telescope assembly

TEMPERATURE RANGE:
-4° F(-20° C) to 122° F(50° C)

SIZE:
7"(18 cm)H X 4"(10.1 cm)W X 45"(114 cm)L retracted; 156"( 396.2 cm)L fully extended

WEIGHT:
6.4 lbs(2.9 kg) including batteries