LUDLUM 79/1 Stretch Scope Survey Meter (0.01 µSv ~ 0.5 mSv (1 µR/hr ~ 50 mR/h))

Detector: CsI(Tl) crystal scintillator, 18 x 18 mm (0.7 x 0.7 in.)

Detection Range: 0.01 µSv to 0.5 mSv (1 µR/hr to 50 mR/h)

Energy Response: Nonlinear (see Energy Response Curve in the Graphs tab)

Linearity: ± 15% full range (dose rate)

LCD Display: Auto-ranging, 3-digit LCD with large 13.4 mm (0.53 in.) digits, low-battery indicator, MAX, ALARM, MUTE

Units: (k)cps, (k)cpm, (k)Bq, (k)dpm, (μ)(m)R(/h), (μ)(m)Sv(/h), (μ)(m)rem(/h)

Response Time: User-selectable from 1 to 60 seconds, Auto-Response Rate FAST or SLOW, or Fixed FAST and SLOW

Alarms: Alarm setpoints adjustable over the display range

Overload: High count rate saturation protection to prevent the false display of lower count rates

Zero Protection: After a user-settable number of seconds of no pulses from detector, the instrument will flash zero reading and the alarm audio will be triggered

Dead Time Correction: Employs first and second order corrections for extended performance

Audio: Greater than 75 dB at 0.6 (2 ft), approximately 4 kHz

Click Audio Divide: x1, x10, x100, x1k

Power: Two alkaline or two rechargeable “AAA” batteries (instrument does not support in-device charging)

Battery Life: Approximately 100 hours of operation, 24-hour low battery warning

Construction: Meter: High-impact plastic with separate battery compartment

Pole: Carbon fiber, telescoping

Temperature Range: -20 to 50 °C (-5 to 122 °F)

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

Environmental Rating: NEMA rating of 4x or IP rating of 65

Size (H x W x L): 20.3 x 8.1 x 114 cm (8 x 3.2 x 45 in.) retracted, 4.5 m (177 in.) fully extended

Weight: 1.4 kg (3 lb), including batteries and shoulder strap

Datasheet

Manual

Video