Model 26 Integrated Frisker

Model 26 Integrated Radiation Frisker

Features

Frisking people and objects for alpha and beta contamination can be awkward because manipulation of the detector and the electronics requires the use of both hands. The cable-less Model 26 consolidates the electronics and the detector into one ergonomic housing. This optimized configuration incorporates a standard 15.51 cm 2 GM pancake probe, loud audio “click” output, and large auto-ranging LCD display with automatic back lighting into one convenient package, making it easier than ever to detect contamination.

Operation is kept extremely simple through the use of just two buttons. Another useful feature, especially when the display is not always directly visible, is the 'MAX' mode that captures the highest or peak count rate. The scaler mode, with a preset count time, allows the user to take a discrete measurement. This system also incorporates low power circuitry, delivering hundreds of hours of use with just two standard “AA” size batteries. The calibrator can protect parameters (cps/cpm, response time, alarm points, & scaler time) or allow the user to adjust them.

The Model 26 series may also be ordered with a standard 3 mm (1/8 in.) plug, mono headphone jack to better monitor the instrument's audible output in noisy environments (part number 4498-538). See more under the Options tab.

Detector Pancake GM detector, stainless steel screen (79% open)
Window Area Active: 15.51 cm2 (2.4 in2)
Open: 12.26 cm2 (1.9 in2)
Efficiency
Alpha
239Pu: 11%
Beta
99Tc: 18%
32P: 32%
14C: 2%
90Sr/90Y: 22%
125I: 0.2%
Gamma
5.5 cps per μSv/hr (3300 cpm per mR/hr) (137Cs)
99mTc: ≤ 1%
Display 3½ digit LCD with large 12.7 mm (0.5 in.) digits, low battery indicator
Units: cpm, cps
Range
0.1 cps to 1.99 kcps
1 cpm to 99.9 kcpm
Linearity ±10%
Backlight Built-in ambient light sensor automatically activates low-power LED backlight, or may be configured for 'Continuous On' operations (will reduce battery life)
Controls
ON / OFF / QUIET: Press to turn ON; Tap to alternate between click audio and QUIET; Hold for OFF
MODE: Alternates between NORMAL (count rate), MAX (captures peak rate), and SCALER (user-selectable preset count time from 0 to 20 min.). Each mode is separately programmable so it can be active or turned off.
Response Time User-selectable from 1 to 60 seconds, or automatic FAST or SLOW
Resolving Time Approximately 100 µs as defined by IEC 60325
Alarms Count rate and scaler alarm setpoints adjustable over the display range
Overload Protection High rate saturation protection, indicated by flashing display and audio alarm, prevents false display of lower count rates
Loss of Count Protection After 60 seconds of no pulses from detector, unit will flash a zero reading and Click Audio Greater than 60 dB at 0.6 m (2 ft)
HV Testpoint Accessible by removing battery cover, allows HV measurement and pulse injection for calibration using optional cable (PN: 8303-1044)
Temperature Range -20 to 50 °C (-4 to 122 °F)
May be certified for operation from -40 to 65 °C (-40 to 150 °F)
Environmental Rating NEMA 3 / IP 53
Power Two “AA” batteries
Battery Life Approximately 1000 hours of operations (as low as 500 hours with backlight configured for 'Continuous On'), 16-hour low battery warning
Construction High-impact plastic with separate battery compartment, wrist cuff and lanyard included
Distance from Surface Plane to Screen 0.32 cm (0.125 in.)
Size (H x W x L) 4.6 x 6.9 x 27.2 cm (1.8 x 2.7 x 10.7 in.)
Weight 0.45 kg (1.0 lb)

Ludlum Model 26 manual

Manual