
Page 10 of 24
Pmag - Quick start-up
7. QUICK START-UP
7.1 Transmitter
Check that the analog range of the transmitter matches the analog range in the control system.
7.2 Flowtube
1. For horizontal flow installations, ensure that the electrodes are in a plane such that they remain covered by process
fluid.
2. For vertical or inclined installations, ensure that process fluid is flowing up into the flowtube to keep the electrodes
covered by process fluid.
3. Ensure that the grounding straps on the flowtube are connected to grounding rings, lining protectors, or the adjacent
pipe flanges. Improper grounding will cause erratic operation of the system.
7.3 Process Fluid
1. The process fluid conductivity must be greater than 5 microS.
2. Process fluid must be free of air and gasses.
Completed the mechanical installation and electrical connections, the PMAG is ready to start. May still be necessary
to verify the units ("Units PV" / "Total Units") and the 100% flow value (Qmax (m3 / h) ") in accordance with plant
requirements.
8. LOCAL OPERATOR INTERFACE (LOI)
The LOI option is an operator communications center for the Pmag. Through the LOI, the operator can access any
transmitter function for changing configuration parameter settings, checking totalized values, or other functions.
8.1 SAFETY MESSAGES
Instructions and procedures in this section may require special precautions to ensure the safety of the personnel performing
the operations. Information that raises potential safety issues is indicated by a warning symbol: .
Please refer to the following safety messages before performing an operation preceded by this symbol.
8.2 WARNINGS
Explosions could result in death or serious injury
- Verify that the operating atmosphere of the flowtube and transmitter is consistent with the appropriate hazardous
locations certifications.
- Do not remove the transmitter cover in explosive atmospheres when the circuit is alive.
- Before connecting a HART-based communicator in an explosive atmosphere, make sure the instruments in the loop
are installed in accordance with intrinsically safe or non-incendive field wiring practices.
- Both transmitter covers must be fully engaged to meet explosion-proof requirements.
Failure to follow safe installation and servicing guidelines could result in death or serious injury
- Make sure only qualified personnel perform the installation.
- Do not perform any service other than those contained in this manual unless qualified
High voltage that may be present on leads could cause electrical shock
- Avoid contact with leads and terminals
8.3 LOI FEATURES
The LOI option contains a four-line, 16-character liquid
crystal display (LCD) that is back-lit and visible from
any angle. There are four touch keys on the pad,
and a infrared decoder to receive keys that on the
remote encoder.Table 3-1 lists and details the
functions of the LOI keys.