the LTH CMC8 Series                 

A.C.P.S Quad Loop Isolator_________    

LTH have designed a series of low cost insertion conductivity cells, which are ideal for use in small water applications where cost and size are the most important factors. This is the CMC8 Series.

This conductivity cell is injection moulded in polypropylene and uses two stainless steel coaxial electrodes. The principal advantage of this construction is that sample volume or the proximity of any pipe work does not affect the cell constant. It has a cell constant of K=0,0135 and is suitable for use on low pressure, low temperature pure water applications. The cell is supplied complete with an integral two meter connection cable and features built in PT100 temperature compensation.

The CMC8 Series conductivity cells are non-temperature compensated and can be supplied with a 0,5"BSP tee as the constant is affected by the sample volume. The CMC8/01 conductivity cells have a cell constant of K=0,1 and two protruding electrodes, and the CMC8/10 conductivity cells have a cell constant of K=1,0, flush electrodes and is suitable for readings of up to 1000 mS/cm.

These cells require no initial or periodic calibration and the only maintenance required is to keep the electrode surface clean. The conductivity cells can be supplied with traceable certification.

For any of the above queries and further information please contact Andy Brown of Temperature Controls on (011) 791 6000 or e-mail him at: andyb@tempcon.co.za

Williamson's Pilot Eye System continuously monitors the presence of pilot flames on flare stacks. This proven and unique system eliminates the worries about a power failure going undetected.

In petrochemical plants and steel mills, flare stacks burn off a variety of hazardous gases that are vented during normal and emergency conditions. If the flare stack pilot flame is out, then these hazardous gases can be vented accidentally into the environment.

This results in damaged equipment, environmental pollution, and even possible human fatality. Consequently, the continuous verification of the presence of the pilot flame is a critical safety requirement that is often regulated.

Typically, the presence of the pilot flame is monitored using a thermocouple device mounted at the top of the flare stack at the pilot tip. While the system is relatively inexpensive and it operates effectively, it can be unreliable difficult to maintain due to unpredictable flames and the corrosive effects of the outdoor environment. When a thermocouple failure does occur, the area is at high risk without the safety status of the pilot flame.

This often requires labor intensive maintenance procedure to expedite the repair or the replacement of the failed thermocouple.

By comparison, the Pilot Eye is a non-contact sensing device that is conveniently mounted at ground level, for continuous, dependable and virtually maintenance-free operation. This provides a cost effective method for meeting safety and regulatory requirements with a high degree of confidence.