Operating Instructions - CPC6050
37
Modular Pressure Controller
CPC6050
6.4.1.8 Operating Mode Selection
The operating modes are permanently displayed on bottom of the Home App. The CPC6050 has three
operating modes: Measure, Control and Vent. After the system has switched on, the instrument will au-
tomatically be placed in Vent mode. The user can switch from one mode to the other by using the mode
selection keys
i
Notice
When switching from Control mode to Measure mode, the system will not be vented and the
last applied pressure will be locked in the system by means of a solenoid valve.
Measure Mode: In Measure mode the CPC6050 acts like a precision pressure measuring instrument
and measures the pressure applied at the Measure/Control port. If the Control mode was the last used
mode before switching into Measure mode, the last controlled pressure is held in the test assembly.
Control Mode: In Control mode the CPC6050 provides a controlled pressure at the Measure/Control
port equal to the setpoint value. It is activated by pressing the Control button. In order to ensure smooth
operation in the control mode, following measures must be taken and respective parameters must be set.
• In order to control pressures close to or below atmospheric pressure, a vacuum pump should be con-
nected to the Exhaust port
• The control speed can be set in the Control Settings App [
]. The Control rate can be set between
0.001% of range/sec to 10% of range/sec.
• Control limits can be set in the Control Settings App [
].
Vent Mode: The Vent function will vent the system to the atmosphere, including the test assembly con-
nected to the Measure/ Control port. The Vent mode can be activated from the Measure or Control mode
by pressing the Vent button. The rate at witch the pressure is released in vent mode is set in page 2 of the
Control Settings App [
].
Warning
!
WARNING! Venting will cause a loss of pressure at the vent rate in the system and the
plumbing connected to the Measure/Control port. Care must be taken that the device
under test is not damaged during venting.