Page 18
PTFM 1.0 Portable Transit Time Flow Meter
SIMULATION
Exercises the 4-20mA.
Test
Select
Maximum
and press
to simulate maximum Flow or Velocity
and to output 20mA to the analog channel.
Select
Minimum
and press
to simulate minimum Flow or Velocity
and to output 4mA to the analog channel.
To simulate measurements between minimum and maximum set
Test
to
Actual
and then enter for the flow measurement. The analog output
will respond to the simulated value.
SLEEP MODE
Logging in sleep mode requires a minimum sample time of 30 seconds. Selecting
sleep mode for 10 second sampling rate is indicated by a flashing display.
BACKLIGHT
Three levels of backlight are selectable to conserve power.
CHARGING
A flashing battery indicates charging.
A solid battery indicates fully charged.
--Simulation--------
Test
Actual
Flow
0
.
00USG
/
m
4-20mA Flow
4
.
00
}
