PREI Instrumentation

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

AC current transducer
November 2002, Sensors & Transducers

Transducers that look like CTs can provide a 2-wire, 4 to 20 mA DC signal for monitoring AC currents from 10 to 2500 A. No auxiliary power is required, and the device operates from a loop power supply ...
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Water quality monitor
October 2002, Analytical Instrumentation & Environmental Monitoring

One of the best ways to quantify the quality of water is to use a continuous turbidity monitoring system. The GLI Accu 4 is the latest generation of turbidity monitoring equipment. By using a 4-beam method ...
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Miniature infrared sensor
September 2002, Sensors & Transducers

A noncontact temperature sensor that is small and inexpensive, is available from PREI Instrumentation. The Raytek CI (compact infrared) sensor is housed in a threaded stainless steel cylinder, only 87 ...
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IR thermometers for HVAC
September 2002, 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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High temperature thermometers
September 2002, Temperature Measurement

New solutions to temperature measurement problems in traditional industrial markets such as steel, heat treatment and glass can now be provided by the Marathon series of infrared thermometers from PREI ...
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Vibration monitoring instruments
August 2002, Sensors & Transducers

There has to be a good reason why so many of South Africa's large organisations are careful about which vibration monitoring instruments they adopt. It does not take many false alarms for plant operating ...
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Ross Cell technology
August 2002, Analytical Instrumentation & Environmental Monitoring

The three-electrode, polargraphic Ross Cell for monitoring dissolved oxygen (DO) consists of a platinum working electrode (cathode), a platinum counter electrode (anode) and a silver reference electrode. ...
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Miniature infrared sensors
July 2002, Sensors & Transducers

A noncontact temperature sensor that is small and cost-effective is available from PREI Instrumentation. The Raytek CI (compact infrared) sensor is housed in a threaded stainless steel cylinder, 87 mm ...
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Glass and metal temperature sensors
June 2002, Temperature Measurement

Raytek has added two new sensors to the MID range of noncontact thermometers. One is specifically for glass processing applications, having a spectral response of 5 microns and a range of 150 to 850°C. ...
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Gas detectors
May 2002, Analytical Instrumentation & Environmental Monitoring

International Sensor Technology (IST) which manufactures instrumentation to detect more than 150 different toxic and/or combustible gases, has awarded its representation to PREI Instrumentation. These ...
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New pH sensors
May 2002, Sensors & Transducers

PREI Instrumentation has recently launched the new compact 1" pHD sensors from GLI International, which still uses GLI's field-proven differential electrode technology. The new sensors use three measuring ...
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Measuring pH in the textile industry
May 2002, Maintenance, Test & Measurement, Calibration

The purity and the colour tone of the textiles depend on the accurate measurement of the dye pH value. By controlling the pH value, undesirable reactions may be avoided and a highly defined product obtained. Azo-dyes ...
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