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Legacy Instruments

Legacy
Rapid, Reliable, Precise Moisture Analyzers

Computrac® by AMETEK Brookfield offers fast, accurate and durable instruments for measuring moisture, solids and ash content. This page provides a detailed timeline of the evolution of our industry-proven moisture, solids and ash analyzers. Click on any of the instruments below for more information. If you have any questions regarding one of our legacy instruments, please contact us online for more information.



Computrac® Vapor Pro®

Manufactured 1997-2019; Service available
The Computrac® Vapor Pro® provides a GREEN, fast, easy, and cost-effective alternative to Karl Fischer titration methods. It is an ideal choice for companies that want to make quality products as efficiently as possible by saving time and money, improving dryer efficiencies and eliminating costly rework and downtime expenses.



 computrac vapor pro FX

Computrac® Vapor Pro® FX

Manufactured 2001-2018; Service not available
The Computrac® Vapor Pro® FX was first introduced in 2001, just 4 years after the introduction of the first Vapor Pro® in 1997. It was ideal for testing the moisture content in lubricating oils and other liquids.



computrac max

Computrac® MAX® 2000XL, MAX® 2000, MAX® 1000 & MAX® 500

Manufactured 1994-2011; Service not available
Fast, durable and easy to use, the Computrac MAX 2000XL, MAX 2000, MAX 1000 and MAX 500 moisture and solids analyzers were staples of the plastics, food, pharmaceutical, gypsum and other industries between 1994 and late 2011.



computrac max

Computrac® MAX® 50, MAX® 20 & MAX® 10

Manufactured 1982-mid 1990s; Service not available
Easy to use, reliable and versatile, the Computrac MAX 50, MAC 20 and MAX 10 moisture analyzers were used in labs across the world to help quicken and simplify moisture testing procedures as well as improve overall product quality.


MA Series Moisture Analyzers

The MA series moisture analyzers (MA-5A, MA-2A, MA-1A) use technology originally developed in the late 70’s. These units use a semiconductor junction temperature transducer, which generates an output current proportional to temperature. Like the MAX® 50 series, the MA units also place the temperature sensor above the sample position. The difference between temperature at the transducer and at the sample surface was experimentally determined and programmed into the software.

The prediction ending criteria used by all the MA series analyzers requires that the difference between predicted moisture and the actual moisture is less than 0.25%. It also requires that successive predictions agree within 0.062%. This prediction algorithm is most similar to the MAX® series’ “EC97” ending criteria.


MAX® 50 Series Moisture Analyzers

The MAX® 50 series analyzers (MAX® 50, MAX® 20, MAX® 10, and the LX-10 and the LX-50) use early 1980’s technology for heat control. These units use a soldered RTD and a “temperature offset” to compensate for the temperature difference measured between the RTD and the sample surface. This offset can be as much as 19°C depending upon the instrument’s test temperature, programming, and the sample size. The MAX®50 series units measure the resistance output from the temperature sensor based upon fixed milliampere input. Changes in resistance within the RTD circuit (such as corrosion), RTD position relative to the burner coil, electronic drift, and sample sediment on the sensor will all affect the sample’s perceived testing temperature.


MAX® 2000, MAX® 1000 Series Analyzers


The MAX® 2000 and MAX® 1000 Moisture Analyzers use state-of-the-art technology to monitor and control test temperatures to assure consistent, reliable moisture results. These units use platinum RTD (resistive temperature device) to measure the temperature generated from the heater coil. This information is relayed to an advanced microprocessor, which controls and limits the heater output to reach and maintain the programmed test temperatures without overshoot.

Factory calibration for the MAX® 2000 and MAX® 1000 Moisture Analyzers is performed using a proprietary calibration device that utilizes an NIST traceable RTD positioned at the sample height to calibrate and verify temperatures in the instruments from 60°C to 275°C (225°C in the MAX® 1000). Measured temperatures at the sample level are recorded into memory and internal constants are adjusted using sophisticated regression algorithms to correlate temperatures measured at the sample surface with the heater’s RTD and heater coil output. Thus, the temperature displayed on the display of the instrument is the temperature as measured at the sample’s height. An optional accessory for the MAX® 2000, the Temperature Calibration Module, allows the user to perform the same calibration and verification on site.

The MAX® 2000 and MAX® 1000 Moisture Analyzers have programmable ending criteria which permit the end-user to select the optimum test conditions for their test sample. The available programs are “predict,” “rate,” and (for the MAX® 2000) “time.” The Computrac patented “predict” ending criteria ends the test when the difference between the predicted and the actual moisture content agree within a certain value. In the automatic mode, this value is based upon the moisture content of the sample. The “rate” ending criteria ends the test when the moisture evolved from the sample in a minute’s time falls below the programmed threshold. The “time” ending criteria runs a fixed time test to determine moisture content (similar to a standard oven-drying test).

MAX® 5000 Moisture Analyzer (V2.21 Or Earlier)

The Delete Stored Data function is described on p. 39 of the MAX® 5000 User Manual, rev 2.21. If the user deletes over 200 single Stored Data records during one day by pressing the Delete soft key individually or continuously, it is possible to cause a “DB Full” error on the instrument. This error is not recoverable, and if “DB Full” appears on the display, the instrument must be returned to the factory for service.

To prevent this rare occurrence, the preferred delete procedure is to select a group of records to delete by using the arrow keys to highlight, followed by pressing the [ENT] key to add each record to the group designated by the triangle symbol at the left of the data item, and then use the DELETE key (and press “yes” to confirm the delete prompt) to delete the entire group in one step. Alternatively, if all records are to be deleted first select all records using the SEL ALL key, and then press the DELETE key.


Jerome® 411 & 511

Gold Film Mercury Vapor Analyzers
No longer manufactured; Service not available

Accurate, rugged and easy to use, the Jerome® 411 and 511 mercury vapor analyzers were manufactured from 1977 until 1992. They utilized Jerome’s industry proven gold film sensor technology, which eliminated particulate interference common to atomic absorption mercury analyzers.

The portable Jerome 411 was able to detect between 0.003 mg/m3 and 1.999 mg/m3 mercury in air and was commonly used for mercury exclusion testing, mercury surveys, hazardous waste monitoring and for applied research projects. The Jerome 511 was designed as a dedicated lab instrument and provided accurate analysis of mercury in water, wastewater and urine between 0 and 100 ng.

Jerome® 471

Atomic Absorption Mercury Vapor Analyzer
No longer manufactured; Service not available
Rugged, portable and easy to use, the Jerome® 471 was manufactured from 2006 until 2009. It utilized atomic absorption to detect ultra low levels of mercury vapor in air. It was the first analyzer from Arizona Instrument LLC to incorporate a touch screen, boasted a battery life of 16 hours, and came fitted with a padded shoulder strap and detachable probe to increase comfort during exended use situations.

The Jerome 471 was capable of detecting as little as 0.030 µg/m3 mercury vapor in air, making it ideal for use at hazardous waste facilities and for mercury exclusion testing, mercury spill response and cleanup, and fluorescent lamp disposal and recycling, among others.

Jerome® 431-X

Gold Film Mercury Vapor Analyzer
Durable, dependable and easy to use – the Jerome® 431-X mercury vapor analyzer utilizes our proprietary gold film sensor to detect low levels of mercury vapor. With just the touch of a button, the 431-X can detect mercury in air from 0.003 mg/m3 to 0.999 mg/m3 in seconds. It is built tough for use in the field or in the lab and is ideal for industrial hygiene monitoring, mining, regulatory compliance, emergency response and more.

MAX® 5000 Moisture Analyzer (V2.21 Or Earlier)

The Delete Stored Data function is described on p. 39 of the MAX® 5000 User Manual, rev 2.21. If the user deletes over 200 single Stored Data records during one day by pressing the Delete soft key individually or continuously, it is possible to cause a “DB Full” error on the instrument. This error is not recoverable, and if “DB Full” appears on the display, the instrument must be returned to the factory for service.

To prevent this rare occurrence, the preferred delete procedure is to select a group of records to delete by using the arrow keys to highlight, followed by pressing the [ENT] key to add each record to the group designated by the triangle symbol at the left of the data item, and then use the DELETE key (and press “yes” to confirm the delete prompt) to delete the entire group in one step. Alternatively, if all records are to be deleted first select all records using the SEL ALL key, and then press the DELETE key.


Check back soon for more information about our other legacy instruments.
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