Yantrika DWT 300, Инструкция по эксплуатации

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"Process Instruments and Calibrators"
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Instruction Manual
Union Connectors: The gauge connector on the gauge block is a union connector which may be rotated in
any direction even after the gauge is tightened on it. The connector has soft seating washers that allow hand
tightening of the gauge on them. There is no need to use teflon tape on the union connector or the BSP
adaptors. Teflon tapes are useful only when tightening gauges on NPT adaptors as the sealing in NPT threads
is on the thread, while the sealing in BSP threads is on the washer and gauge bottom face. Use of teflon tape is
to be avoided on the union connector as loose tape may clog the tubing in the system.
Set of Weights: The top face of each weight including carriers are marked with the pressure equivalent of the
weight and the serial number of the tester for which it is calibrated. The weights have a projection on the top
face and a recess on the bottom face to maintain concentric stacking of the weights on the carrier or
elsewhere.
Release Valve: The release valve is the only user operable valve in the system. It should be left open during
storage or dis-use of the tester. The valve should normally be closed after the screw pump handle has been
withdrawn all the way back by rotating it counter-clockwise. The valve is kept closed during normal testing.
Electrical Power Rotation ( if ordered): The rotation of the PCU is accomplished by the electrical system
provided. The mechanism is designed to transmit only torque and no vertical or horizontal forces. The rotation
is designed for approximately 30 rpm. The motors run on standard mains 220VAC single phase supply.