PREI Instrumentation

Tel: +27 11 867 5001
Email: [email protected]
www: www.prei.co.za
more information about PREI Instrumentation

Thermal imaging for all
November 2004, Temperature Measurement

Thermal imaging has long been seen as the domain of specialists only with prices generally in the region of R100 000 and much more. Now there is a thermal imager available at around a third of the price ...
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Intrinsically safe vibration sensor
October 2004, Sensors & Transducers

The Metrix model ST5484E from PREI Instrumentation has been rated EEx ia 11C T4 intrinsically safe and may be used in potentially explosive atmospheres. This vibration sensor is a 2-wire loop-powered ...
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Differential pH sensors
October 2004, Sensors & Transducers, Security Services & Risk Management

The compact 25,4 mm pHD sensors from PREI Instrumentation, use three measuring electrodes compared with conventional pH sensors, which use only two electrodes. This superior technology provides increased ...
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Loop-powered AC current transducers
September 2004, Sensors & Transducers, Security Services & Risk Management

A range of both cable and busbar mounted current transducers, which are locally manufactured by PREI Instrumentation is available for both cable and busbar mounted applications. These 2-wire loop-powered ...
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Preventing damage to reciprocating machines
September 2004, Maintenance, Test & Measurement, Calibration

Here is a 'new old way' of protecting reciprocating machines from catastrophic failure and reducing the cost of repairs: the impact transmitter. Reciprocating machines are unique and do not follow the ...
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Inexpensive thermometers
September 2004, Temperature Measurement

Determining the efficiency of an HVAC system is often tedious and time consuming. Today, infrared (IR) thermometers offer a faster, more effective way to diagnose duct leaks, blocked steam traps, wet ...
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New turbidity meter
September 2004, Flow Measurement & Control

The 1720 series of low range turbidity meters (began in 1976) have been regularly upgraded and the latest 1720E turbidimeter is an online instrument designed to continuously monitor turbidity in the range ...
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Miniature infrared thermometer
August 2004, Temperature Measurement

The MLE series sensor from PREI Instrumentation is only 18*#160;mm in diameter and 44 mm long, requires 24 V d.c. and its compact microprocessor-based electronics offers the features of much larger thermometers. ...
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Total organic carbon (TOC) analysers
July 2004, Analytical Instrumentation & Environmental Monitoring

Chemical manufacturers, petrochemical plants, and electric utilities all require large volumes of clean steam to produce products and services. Feedwater polishing and steam generation are very expensive ...
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Electrodeless conductivity sensors
July 2004, Sensors & Transducers

The common problems of polarisation and coating, or chemical attack and abrasion, which affect conventional electrode-type conductivity sensors, will not affect the GLI electrodeless sensors from PREI ...
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Low-cost non-contact thermometer
June 2004, Temperature Measurement

The EL Series of infrared thermometers from PREI Instrumentation provide a 4 to 20 mA, 2-wire, loop-powered signal for any span of 100°C or more within the range of 0 to 500°C. The accuracy is 1% of reading ...
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Proximity vibration monitoring
June 2004, Maintenance, Test & Measurement, Calibration

When the mass of a rotor is small (15% or less) compared to the mass of the stator, the sensitivity of seismic vibration monitoring at the bearings is poor. In such cases, and in particular for white ...
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