LUDLUM 78-9 Stretch Scope Survey Meter (3.7 m; 000.0 - 999.9 cps µSv/h)

Indicated Use: Beta-gamma survey with telescoping detector, 3.6 m (12 ft) fully extended

Detectors: Halogen-quenched GM pancake

Energy Response: Energy dependent (see Model 44-9)

Display: 4-digit LCD display with 1.3 cm (0.5 in.) digits

Display Range: 000.0 - 999.9 with indicators of cps and µSv/h

Backlight/Reset: Temporary action 2-position toggle switch to turn backlight on for preset time, or to zero meter and display

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

Response: Dependent on number of counts present. Typical times: FAST 4 to 25 s, or SLOW 4 to 60 s, from 10% to 90% of final reading

Angular Response: Within 30% as detector is rotated from 0 to 90 degrees (calibration reference is with radiation field parallel to the long axis of the detector)

Geotropism: Referenced to the unit in horizontal position with the display up, the indication will not vary more than 2% of the full-scale reading with the unit in any other direction

Working Environment: Indoor/outdoor (splashproof shields for outdoor use), environmental rating IP 52

Temperature Range: -15 to 50 °C (5 to 122 °F)

May be certified for -40 to 65 °C (-40 to 150 °F)

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

Battery Life: Typically 250 hours with alkaline batteries (low battery indicated on display)

Headphone Jack: Size 0.32 cm (1/8 inch)

Construction: Aluminum housing with beige powder coat paint, and polished stainless steel telescope assembly

Size (H x W x L): 18 x 10.1 x 114 cm retracted, 396.2 cm fully extended (7 x 4 x 45 in. retracted, 156 in. fully extended)

Weight: 2.9 kg (6.4 lb), including batteries

Datasheet

Manual