Includes:

Model 3 General Purpose Survey Meter
PN: 48-1605
Model 44-21 Beta-Gamma Detector
PN: 47-1560

The Model 3 is Ludlum’s best selling, general purpose, handheld, analog ratemeter known for accuracy and long-lasting dependability. It comes in a variety of measurement ranges and units to support the external radiation detector selected.

The cast aluminum instrument housing with a separate battery compartment and 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 four-decade range, instrument shut-off, and battery test, an audio on/off switch, a fast/slow response switch, and a count reset button.

A one meter (39 in.) straight type detector cable with “C” style connector is included in the price of the instrument.

Model 3 General Purpose Survey Meter:

Application	Alpha, Beta, and Gamma surveying
Compatible Detectors	GM, Scintillation
Detection Range	Dependent on detector
Linearity	Reading within 10% of true value with detector connected
Meter Dial	0 – 2 mR/hr, or 0 – 500 kcpm, BAT TEST (Meter Faces tab lists other available meter faces)
Meter	6.4 cm (2.5 in.) arc, 1 mA analog type
Controls	Rotary Selector Switch: Switches between: Instrument off; Battery check; Ranges: x0.1, x1, x10, x100 Response Switch: Toggles between FAST (4 s) or SLOW (22 s) from 10% to 90% of final reading Reset Pushbutton: Zeroes meter Audio Switch: Audio on/off, built-in unimorph speaker, greater than 60 dB at 0.6 meters (2 ft.) Calibration Controls: Accessible from front of instrument (protective cover provided)
High Voltage	Adjustable from 400 to 1500 Vdc
Threshold	Fixed at -30 mV ± 10 mV
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	Two each “D” cell batteries housed in externally accessible sealed compartment
Battery Life	Typically greater than 2000 hours with alkaline batteries (battery condition can be checked on meter)
Construction	Cast and drawn aluminum with beige powder coat
Connector	Series “C” (others available)
Size (H x W x L)	16.5 x 8.9 x 21.6 cm (6.5 x 3.5 x 8.5 in.), including handle
Weight	1.6 kg (3.5 lb), including batteries

Model 44-21 Beta-Gamma Detector:

Indicated Use	Beta; Low-energy gamma detection
Detector Type	NaI(Tl) scintillator, 2.54 cm (1 in) dia. x 0.1 cm (0.04 in) thick, adhered to plastic scintillator, 0.03 cm (0.01 in) thick
Window	3.4 mg/cm²
Window Area	Active: 5.1 cm² (0.8 in²) Open: 5.1 cm² (0.8 in²)
Efficiency (4π)	¹⁴C: 4% ³²P: 28% ¹²⁵I: 38% ¹²⁹I: 19%
Typical Background (10 µR/hr field)	450 cpm
Non-Uniformity	< 10%
Photomultiplier Tube	3.8 cm (1.5 in) diameter
Operating Voltage	500 to 1200 V (typical)
Connector	Series “C” (others available)
Construction	Aluminum housing with beige powder coat
Size (D x L)	5.1 x 18.5 cm (2 x 7.3 in) with connector cap
Weight	0.5 kg (1 lb)

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Quality

Our refurbished instruments are tested and repaired to meet factory specifications. We follow Installation Qualification, Operational Qualification, and Performance Qualification protocols (IQ, PQ and OQ).

Expertise

Our team of skilled technicians are experts at fixing analytical instruments. We have been working with Agilent, Waters, Perkin Elmer, Sciex, Shimadzu, and Thermo instruments for many years. We are constantly updating our knowledge with the latest technology and information to enable us to deliver the best support in the industry. We provide value added support and qualification/validation with all our instruments. We endeavor to develop strategic partnerships with our clients so that they consider our team as an extension of their employees. We are an affordable alternative to many normally expensive business projects.

Warranty and Support

We offer warranty on all refurbished instruments. Warranty starts at 3 months, with the option to extend the period. While your instrument is on warranty, we will provide Email (support@spectralabsci.com) and phone support and troubleshooting if you require assistance. If there is ever anything wrong with the equipment, we will replace it. Warranty begins from the date your equipment is successfully delivered. Any issues that occur during warranty should be reported immediately, describing the issues in as much detail as possible. Do not attempt to repair the equipment or involve a 3rd party without our express permission – this will result in voiding our warranty.

We will match our warranty duration with our competitors.

Installation and Training

If you purchase equipment from Spectralab Scientific, we offer installation and familiarization by our service technicians for an additional fee. If the instrument is particularly complicated, we highly recommend this service. If you’ve purchased less-complex equipment from us that you would like to install yourself, we can provide Team Viewer, email, or telephone support for no additional cost.

Large Inventory

We have a large inventory of equipment, components and parts in stock. You can find all the equipment you need for you lab in our store, as well as mix and match components for your systems.

International Shipping

We have sufficient export experience, including professional packing and proper documentation. Complementary shipping and handling can be applied upon immediate purchase. We include customs fees, brokerage, and duties for shipping to the US.

Price Matching & Discounts

Purchasing our refurbished instruments can save you anywhere from 30% to 90% compared to purchasing brand new. We will try to match or beat any price from our competitors, so feel free to inquire! Complementary shipping and handling can be applied upon immediate purchase.