TF1100-CH transit-time handheld flowmeter manual
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PART-3 HOW TO USE MENU OPERATION
3.1 HOW TO JUDGE WHETHER THE INSTRUMENT WORKS
PROPERLY
Generally speaking, when ‘R’ is displayed in the lowest right corner of LCD display, the
instrument is working properly.
If an ‘H’ flashes on that place, there could be poor signal received. Please refer to the
chapters on diagnosis.
If an ‘I’ is displayed, it means that there is no signal detected.
If a ‘J’ is displayed, it means that the hardware of this instrument could be out of order. Refer
to the chapter on diagnosis.
3.2 HOW TO JUDGE THE LIQUID FLOWING DIRECTION
(1)
Make sure that the instrument works properly
(2)
Check the flow rate for the indication. If the displayed value is POSITIVE, the direction
of the flow will be from the RED transducers to the BLACK transducers; if the displayed
value is NEGATIVE, the direction will be from the BLACK transducers to the RED
transducers.
3.3 HOW TO CHANGE THE UNITS SYSTEMS
Use menu window M30 for the selection of unit system in English or Metric system.
3.4 HOW TO SELECT A REQUIRED FLOW RATE UNIT
Use menu window M31 to select the flow unit first and then the timing unit.
3.5 HOW TO USE THE TOTALIZER MULTIPLIER
Use window M33 to select a proper totalizer. Make sure that the totalizer pulse is
appropriately speeded. It should not be too fast and neither too slow. A speed of producing a
pulse in several seconds or minutes is preferable.
If the totalizer multiplier is too small, there can be a loss of accumulation pulse because the
output device can output only one pulse in a measurement period (500milliseconds)
If the totalizer multiplier is too large, the output pulse will be too fewer for the devices that
are connected with the instrument for a quicker response.
3.6 HOW TO OPEN OR SHUT THE TOTALIZERS
Use M34, M35 and M36 to turn on or turn off the NET, POS, or NEG totalizer respectively.
