Model 19

microR Survey Meter

Part Number: 48-1615

Features

• High Sensitivity to Gamma
• Range: 0 to 5000 μR/hr
• Rugged
• Splashproof Protection for Outdoor Use
• 2000 Hour Battery life
• Meter Light

The Model 19 is a highly sensitive gamma microR meter employing an internally housed, 2.5 x 2.5 cm (1.0 x 1.0 in.) NaI detector. The measuring range is 0 to 5000 µR/hr. (For µSv/h, use Model 19 Series 8, P/N: 48-2582.) The cast aluminum instrument housing with a separate battery compartment and accompanying metal handle offer an industrial robustness and quality that promote long lasting protection and instrument life.

The front-panel controls include a rotary switch for selecting the five-decade range and instrument shut-off, an audio on/off switch, a fast/slow response switch, and pushbuttons for activating the meter lamp, high-voltage display, battery test, and count reset. The Model 19 is a complete turn-key system and includes two "D" cell batteries.

Note: While the detector used in this instrument is sensitive and is often used for detection of near-background levels of radiation, its nonlinear energy response means that dose and exposure measurements may be over/underreported.

• Specifications
• Meter Faces
• Options
• Documents
• Replacement Parts
• Video

• Specifications
• Meter Faces
• Options
• Documents
• Replacement Parts
• Video

Specifications

Application	Low-level (microR) gamma survey
Detector (D x L)	NaI(Tl) scintillator, 2.5 x 2.5 cm (1 x 1 in.)
Detection Range	0 to 5000 μR/hr (for µSv/h, see note below)
Sensitivity (137Cs gamma)	Approximately 175 cpm per μR/hr
Energy Response	Energy dependent (see Energy Response Curve)
Linearity	Reading ± 10% of true value
Meter Dial	0 - 25 µR/hr, 0 - 50 µR/hr, BAT TEST, High Voltage Test
Meter	6.4 cm (2.5 in.) arc, 1 mA analog type
Controls	Rotary Knob Selector: Switches between: 0 to 25, 0 to 50, 0 to 250, 0 to 500, 0 to 5000 μR/hr, Instrument Off Response: Toggle switch for FAST (4 s) or SLOW (22 s) from 10% to 90% of final reading Audio: Built-in unimorph speaker with ON/OFF switch (greater than 60 dB at 0.6 m [2 ft]) High Voltage: Pushbutton to display HV setting on meter Battery: Pushbutton checks battery voltage Reset: Pushbutton to zero meter Lamp: Pushbutton to activate meter light Calibration Controls: Accessible from front of instrument (protective cover provided)
Working Environment	Splashproof shields for outdoor use
Temperature Range	-20 to 50 °C (-4 to 122 °F) May be certified for operation from -40 to 65 °C (-40 to 150 °F)
Power	2 each “D” cell batteries (housed in sealed compartment that is externally accessible)
Battery Life	Typically 2000 hours with alkaline batteries (battery condition can be checked on meter)
Construction	Cast and drawn aluminum with beige powder coat finish
Size (H x W x L)	15.2 x 8.9 x 21.6 cm (6.0 x 3.5 x 8.5 in.) without handle
Weight	2.04 kg (4.5 lb), including batteries

Note: For µSv/h, use Model 19 Series 8 (P/N: 48-2582).

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Meter Faces

This table lists the most commonly used meter faces.

 

Meter Face	Image (click to view larger)	Description
202-1070		0 - 50 µR/hr 0 - 25 µR/hr BAT TEST

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Options

Option	Description	Part Number
Overload Indicator Option	Adds Overload indicator (does not include light).	4464-153
Detector Clips	Stainless steel clip attaches to instrument handle or case facilitating one-handed carrying of instrument and detector.	Depends on detector.
Lighted Handle	Handle with LED to illuminate the instrument display.	4464-154
Shoulder Strap	Adjustable nylon shoulder strap.	4363-413
Transport & Storage Case - Small	Rugged, dust- and waterproof transport and storage case.	2311062
Plastic Disk Check Sources	General purpose check sources used to check instrument response.	Depends on source material and activity.

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Documents

• Data Sheet
• Product Manual
• CE Certificate
• Energy Response

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Replacement Parts

Description	Part Number
NaI(Tl) Scintillator glued to PMT, Non-Based with Voltage Divider	2004-033
NaI(Tl) Scintillator with PMT, Non-Based with Voltage Divider	40-5154
Detector Assembly (Includes 2004-033)	47-1574

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Video

Model 19 Operating Instructions

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