Telstor Launch 'Advance'
22 October 2008
Lee-Dickens, the UK instrumentation specialists, has released the 80 Series Telstor Advance capacitive level transmitter, a new two-wire 4-20mA device for continuous level measurement over the range 160mm to 25m.
The Telstor Advance is suitable for all liquids and is especially accurate for foams, hydrocarbon liquids gases and other liquids of a low di-electric constant.
The Series 80 family is capacitance-based and aimed at applications ranging from solids handling to process control. Series 80 devices are already well known for their dependability, robustness and cost-effectiveness. They also offer considerable customisation potential in terms of materials, length and size.
The new 80 Series Telstor Advance is non-processor-based and therefore very reliable. Formerly the probe had a separate external box for electronics. The electronics have been reduced in size and are positioned within the head itself. This simplifies installation and cuts costs. The 80 Series Telstor Advance is backwardly-compatible with existing installed 80 Series products, making it ideal for replacement or upgrading.
The 80 Series Telstor Advance offers non-interactive span and zero calibration to calibrate the device at the push of a button at tank full and tank empty states. Standard recalibration techniques often require tanks to be emptied four of five times, which is costly and not environmentally-friendly. The Telstor device only requires the tank to be filled once to calibrate the probe, reducing commissioning costs by 40%.
Various electrodes are available, ranging from rigid versions made from stainless steel and, depending on the application, can be covered, or part covered, with PTFE or PVDF. Flexible rope electrodes can be used in systems where the electrode length exceeds 4.0m and in applications involving solid material which would damage a rigid electrode.
The operating temperature of the sensor electronics is -40°C to 55°C. If required, a heat sink can keep high temperatures away from the head mounted electronics.
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