Fluid Components International MT86_MT86HT Manual Operation - Manual

Doc. No. 003162 Rev. F 3 - 1 Models MT86, MT86HT
CHAPTER 3 - OPERATION FLUID COMPONENTS INTL
Introduction
The flowmeter has been configured and calibrated to custom specifications. Each flowmeter contains distinct
operating limits and units of measurement. This chapter will show how to determine and manipulate the
configuration of the flowmeter.
Caution: The flow transmitter contains electrostatic discharge (ESD) sensitive devices. Use standard ESD
precautions when handling the flow transmitter. See Chapter 2, Installation, for ESD details.
Apply Back-Up Battery Power
There is a totalizer option for the flowmeter. This option has a backup battery that keeps power applied to the
memory that holds the accumulated count during loss of power. There is a jumper on the back of the totalizer and
display board that needs to be repositioned to the ON position. See Figure 3-1 for the jumper location. The
estimated life of the battery is 3 years of power off operation. The battery power is drained only when the operating
power is off and the battery power is on. During shipment and storage, the battery jumper is OFF to conserve power.
Apply Power
Warning: When an open flowmeter has power applied, the operator assumes all responsibility for
conformance to safety standards and safe practices.
Verify the wiring, then apply power to the flowmeter. There are no special instructions for shutdown of the
flowmeter; just remove the operating power.
Wait a minimum of 5 minutes for flowmeter to stabilize. The display will indicate the current media flow. There are
no operator actions needed because the flowmeter operates from the factory settings.
If the display is blank, is out-of-range for the expected values or is obviously not right then turn off the power and go
to Chapter 5 - Troubleshooting, to find the problem.
Operator Interaction
There is little need for interaction between the operator and flowmeter. The flowmeter is fully automatic when it
operates in the monitor mode. Setting the output signal and switch point relay closures as well as other options
depend on individual applications. FCI advises the use of factory default settings that the flowmeter was ordered
with. Do not reset the flowmeter's operating values by trial and error. Standard output options, such as a switch
point relay closure, operate automatically as a function of the output signal level.
A calibration table can be found in the back of this manual. The table shows a listing of the actual mass flow values
as indicated by the output signal. For example: using the standard 4-20 mA output signal, if the signal is 12.0 mA,
find 12.0 in the milliamp row and read across to the next column for the measured flow.
The display provides an instant readout of mass flow. The display shows only the flow rates between the upper and
lower limits of the calibrated range. For zero-based instruments the display will show zero whenever the flow rate is
below the calibrated lower limit. For non-zero-based instruments the display will read the minimum specified
flow rate.
3. Operation