ZTD Series Smart Displacer Level (Interface) Transmitter
ZTD series smart displacer level (interface) transmitter (hereinafter called ZTD) is Joint manufactured by PI Controls Electric Instrument Co. Ltd and Fisher Controls company. ZTD-G is multi-purpose transmitter designed for measuring level, interface,or density. Having multiple function, durability, stability, and cost-effective properties, it's welcomed by customers in petroleum line or tank, vessel or process control, etc...
ZTD series smart displacer level (interface) transmitter consists of imported original DLC3000 series smart level controller and measuring chamber, measuring mechanism, displacer and torque tube, etc. The liquid level changing triggers the change of the buoyancy to displacer, then it will be transfered into the torque tube unit. This makes the torque tube and core axle rotate synchronously.
At the same time, the magnetic steel parts that fixed at the core axle of the torque tube turn rotary displacement. The Hall-effect sensor senses the magnetic field change and converts the magnetic signals into current signals. DLC3000 series smart level controller measures process variables with a controller and relative electronic circuit, supplies current output to drive LCD and support HART communication. Controllers receives the electric signals that have been temperature-compensated and linearised. Meanwhile, compensates the liquid density change caused by the change of the process temperature, then supplies 4-20mA current output signals. LCD can indicate analog output, process variables, process temperature (if RTD is installed). degrees of the toque tube rotation and percent range of variable, etc.
