Model 26-2

Integrated Frisker

Part Number: 48-4044

Features

• Integrated, Lightweight Design Simplifies Frisking
• High-Impact Plastic Housing with Water-Resistant Rubber Seals
• Employs Standard 15.5 cm² GM Pancake Detector
• RATE, MAX, and TIMED FRISK Operating Modes
• Simple Two-Button Operation
• Three Levels of Count Rate Alarms with Daylight-Visible Green & Red LEDs to Indicate Alarm Level
• Automatic Display Backlight
• Comfortable Non-Slip Grip
• Detector Cover, Wrist Strap & Lanyard Included

Unlike other meter and detector combinations that require two-handed operation, the Model 26-2 combines the meter electronics and detector into a single, easy-to-use tool, simplifying the process of detecting radioactive contamination on people and objects. This optimized configuration incorporates a standard 15.5 cm² pancake GM probe and a large, auto-ranging LCD with automatic backlighting into an ergonomic housing with “click” audio and two button controls, allowing for one-handed operation.

Three modes of operation are available – RATE, MAX, and TIMED FRISK – which can be selected by pressing the MODE button. RATE mode displays the current count rate in either cps or cpm units. MAX mode captures the highest count rate detected; this is useful for finding a peak rate or for frisking when the display is not visible. TIMED FRISK mode allows the user perform a contamination frisk for a predetermined time, up to 20 minutes. When performing a timed frisk, the display will alternate between showing the current count rate and the remaining frisk time.

Up to three count rate alarms can be configured, which are automatically evaluated from lowest to highest values. Four LEDs show the current alarm status: a green LED for no alarm and three red LEDs which work in combination to signify the alarm level.

The instrument body is made of high-impact plastic, and water-resistant construction allows the instrument to be used outdoors. A wrist strap and lanyard are included for keeping the instrument close and secure. The instrument is powered by two alkaline AA batteries with a battery life of up to 250 hours.

• Specifications
• Graphs
• Options
• Documents

• Specifications
• Graphs
• Options
• Documents

Specifications

Detector	Pancake GM detector, stainless steel screen
Window Area	Active: 15.51 cm2 Open: 12.26 cm2
Efficiency (4π)	Alpha: 239Pu - 11% Beta: 99Tc - 14%; 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%
Energy Range	16.3 keV to 1.3 MeV
Display	3½ digit LCD with large 12.7 mm (0.5 in. ) digits, low-battery indicator, MAX, ALARM Units: (k)cps, (k)cpm
Display Range	0.1 cps to 1.99 kcps 1 cpm to 99.9 kcpm
Linearity	± 10%
LEDs	Daylight-visible green LED for "OK" 3 red LEDs for 3 levels of alarm
Backlight	Built-in ambient light sensor automatically activates low-power LED backlight. May be configured for 'Continuous On' operation (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 RATE (count rate), MAX (captures peak rate), and TIMED FRISK (user-selectable preset count time from 0 to 20 min.)
Response Time	User-selectable from 1 to 60 seconds or auto-response rate FAST or SLOW
Resolving Time	Approximately 110 µs as defined by IEC 60325
Alarms	Up to three count rate alarm setpoints, adjustable over the display range
Overload Protection	High count rate saturation protection prevents false display of lower count rates, indicated by flashing display and audio alarm
Loss of Count Protection	After 60 seconds of no pulses from detector, unit will flash a zero reading and trigger alarm audio
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 (see Options)
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 250 hours of operation, 16-hour low battery warning
Construction	High-impact polycarbonate plastic with water-resistant rubber seals and separate battery compartment
Distance from Surface Plane to Grill	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)

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Graphs

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Options

Option	Description	Part Number
Protective Cover with Tether	Adds tether to the detector protective cover to keep attached to instrument when cover is not in use.	4519-041
Headphone Jack	Adds headphone jack to instrument.	4498-538
Canvas Holster	Canvas holster with belt clip for Model 26 Series instruments.	2312577
Model 180-28	Sample holder for Model 26-Series friskers.	47-3948
Calibration Cable	Allows HV measurement and pulse injection into any Model 26 family of instruments (excluding the Model 26S) from 2019 and later. 99 cm (39 in.) long, C to test pin.	8303-1044
Extendable Pole	A lightweight pole with 5 telescoping sections and an adjustable clamp to hold a Model 26 Series Frisker. Useful to access high, low, or other hard to reach places. Length: 0.55 m (1.8 ft) collapsed, 1.5 m (4.92 ft) fully extended	4519-077
Transport & Storage Case for Model 26 and Extendable Pole	Rugged, waterproof, airtight, hard-shell case with dense foam padding to hold Model 26 and extendable pole.	2311064

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Documents

• Data Sheet
• Product Manual
• Model 26 Series Comparison Table

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