www.lakeshore.com Model 425 Gaussmeter

Model 425 Gaussmeter Field ranges from 350 mG to 350 kG DC measurement resolution to 4¾ digits (1 part of ±35,000) Basic DC accuracy of ±0.20% DC to 10 kHz AC frequency USB interface Large liquid crystal display Introduction Designed to meet the demanding needs of the permanent magnet industry, the Lake Shore Model 425 gaussmeter provides high end functionality and performance in an affordable desktop instrument. Magnet testing and sorting have never been easier. When used in combination with the built in relay and audible alarm features, the Model 425 takes the guesswork out of pass/fail criteria....

Measurement Features Instrument Probe Features The Model 425 offers a variety of features to enhance the usability and convenience of the gaussmeter. The Model 425 offers the best measurement performance when used along with Lake Shore Hall probes. Firmware-based features work in tandem with the probe’s calibration and programming to ensure accurate, repeatable measurements and ease of setup. Many of the features require probe characteristics that are stored in the probe connector’s non-volatile memory. Autorange: In addition to manual range selection, the instrument automatically chooses an...

Display and Interface Features The Model 425 has a 2-line by 20-character liquid crystal display. During normal operation, the display is used to report field readings and give results of other features such as max or relative. When setting the instrument parameters, the display gives you meaningful prompts and feedback to simplify operation. Keypad Computer interface The instrument keypad has 14 keys with individual keys assigned to frequently used features. Menus are reserved for less frequently used setup operations. The keypad can be locked out to prevent unintended changes of instrument...

Hall Probe Selection Listed below are the probes that you can choose from to include with your Model 425. Our experts can guide you through the probe selection process. Other standard probes are available at an additional cost. Lake Shore prides itself on making every attempt to satisfy customer requests for special probes. If you need a custom probe, contact Lake Shore for availability. Axial probes L (in) D (in) A (in) HMNA-1904-VR 4 ±0.125 0.187 dia ±0.005 HMMA-2502-VR 2 ±0.063 0.25 dia ±0.006 HMNA-1904-VF 4 ±0.125 0.187 dia ±0.005 HMMA-2502-VF 2 ±0.063 0.25 dia ±0.006 0.005 ±0.003 0.015 ±0.005...

Model 425 Specifications (Does not include probe error, unless otherwise specified) General measurement Input type: Single Hall effect sensor Maximum update rate: 30 rdg/s Probe features: Linearity compensation, probe zero, and hot swap Measurement features: Autorange, max hold, relative mode, and filter Probe connector: 15-pin D-sub socket DC measurement Probe type Ranges HST probe 350 kG 35 kG 3.5 kG 350 G HSE probe 35 kG 3.5 kG 350 G 35 G UHS probe 35 G 3.5 G 350 mG Filter on 4¾-digit resolution Filter off 3¾-digit resolution 000.01 kG 00.001 kG 0.0001 kG 000.02 G 000.1 kG 00.01 kG 0.001 kG...

Front panel General Display: 2-line × 20-character LCD display module with 5.5 mm high characters and LED backlight Display units: Gauss (G), tesla (T), oersted (Oe), and ampere per meter (A/m) Display update rate: 3 rdg/s Display resolution: To ±4¾ digits Units multipliers: µ, m, k, M Display annunciations: DC — DC measurement mode; RMS — AC RMS measurement mode; MAX — Max hold value; — Alarm on Keypad: 14-key membrane Front panel features: Display contrast control and keypad lock-out The Model 425 is the replacement for the Model 421 with a new software command set. Ambient temperature: 15...

Lake Shore Cryotronics, Inc. 575 McCorkle Boulevard Westerville, OH 43082-8888 USA Tel 614-891-2244 Fax 614-818-1600 e-mail [email protected] www.lakeshore.com Established in 1968, Lake Shore Cryotronics, Inc. is an international leader in developing innovative measurement and control solutions. Founded by Dr. John M. Swartz, a former professor of electrical engineering at the Ohio State University, and his brother David, Lake Shore produces equipment for the measurement of cryogenic temperatures, magnetic fields, and the characterization of the physical properties of materials in temperature...