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Available fitting kits include:
•
1/8" compression fitting with screen and O-ring, p/n B-1562-001V
1/4" compression fitting with screen and O-ring, p/n B-1562-000V
•
6 mm compression fitting with screen and O-ring, p/n B-1562-036V
•
Gas Connections
Each X-Flow™ mass flow controller has two (2) threaded process connection ports, one (1) located
at each end of the base block. One (1) serves as the gas inlet while the other is the gas outlet.
Make certain the tubing which mates to the fitting is correctly sized, clean and is seated against the
shoulder in the body of the compression fitting, prior to tightening the connection. Tighten the fitting's
hex nut sufficiently to prevent leakage. Refer to the applicable fitting manufacturer's data for specific
recommendations regarding installation and tightening. Test joints for leaks. The inlet and outlet
fittings contain a 325 mesh (44 micron) filter screen which prevents foreign matter from entering the
instrument.
Always check your system for leaks, before applying fluid pressure. Especially if toxic,
explosive, or other dangerous fluids are used.
2.5 In-line filter usage
Fluids to be measured should be free of dirt, oil, moisture, and other particles. Fluids that are heavily
contaminated or contain particulates are detrimental to precision. If liquid phases enter the sensor
chamber, the function of the sensor and the mass flow controller may be impaired.
It is recommended to install an in-line filter or liquid separator upstream of the flow controller, and if
backflow can occur, a downstream filter is recommended too. Be aware of the pressure drop caused by
the filter.
Contact ppfinfo@parker.com for further information.
2.6 Piping requirements
Be sure that piping is clean!
DO NOT install small diameter piping on high flow rates, because the inlet jet flow will affect
the accuracy.
DO NOT mount abrupt angles direct on inlet and outlet, especially not on high flow rates, allow
at least 10 pipe diameters distance between the angle and the instrument is recommended.
DO NOT mount pressure regulators directly on the inlet of gas flow controllers, allow at least
25 pipe diameters distance between regulator and gas flow controller inlet.
2.7 Electrical connections
2.7.1 Interface
X-Flow™ instruments can be operated by means of:
1. Analog interface (0...5Vdc or 4...20mA)
2. RS232 interface with FLOW-BUS protocol
3. RS485 interface with Modbus® protocol
All above operation options are standard available in X-Flow™ instruments.
According to the pin-designation both RS232 and RS485 are assigned to the same pins. When
connecting these pins to either of the two protocols, the instrument will automatically detect which
protocol to use. When sending a frequent request to the instrument, it will be capable of recognizing the
protocol,
once the instrument detects this protocol, it will send an answer.
The instrument will remember the detected protocol while the instrument is powered. This auto detection
cannot be switched off or by-passed.
For electrical hook-up diagrams refer to document FM-1409, "Hook-up X-Flow™"
Page 11
Instruction manual Parker X-Flow
FM-1407 Rev - 11/2021
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