Impulse Line Inegrity Test System

ILITS-3

• Mass flow control of test gas - accuracy unaffected by line pressure or gas temperature.

• Clogging or leakage of impulse lines detected by
change in back pressure.

• Supplied with UKAS (ISO 17025) calibration.

Originally built to test impulse lines on gas cooled reactors, ILITS-3 is designed to detect minor changes in impulse line conductance caused by clogging or corrosion. Safety life cycle testing is now
a requirement in many industries to prevent plant failure and potentially hazardous releases to atmosphere.

Testing is done by injecting a constant known gas flow though a line and measuring the pressure head required to maintain this flow. The test set has an adjustable regulator on the rear panel to
set the input pressure to the internal mass flow controller, the flow command to the mass flow controller is user selectable from the front panel. Output of the mass flow controller is injected into
the line to be tested and the output port pressure is monitored by an internal capacitance manometer.

Both pressure head and mass flow are clearly displayed on the LED front panel displays, and analogue or digital outputs are available for data logging.

As the test set is designed for field applications, it is housed in a portable instrument case fitted with an adjustable carry handle / desk stand. Use with a clean dry inert test gas is ideal, but the unit is fitted with an inlet filter and pressure regulator to allow it to be used from a compressed air supply.

Test gas flow accuracy is assured by the use of a mass flow controller, which is not affected by line pressure or temperature changes. Similarly a capacitance manometer with accuracy of 0.3% of reading and resolution of 0.01% of full scale is used to provide the pressure measurement sensitivity required. UKAS (ISO17025) calibration certificates are included, and Chell Instruments are able to perform the recommended annual recalibration.