Martel Electronics 135 - Manual (Page 54)

Turbine Meter Calibration Using the Totalize Function
For flow transmitters designed for very low flow levels, it is frequently
more convenient to calibrate using the Totalize function. This involves
counting the number of pulses from the turbine when a known volume
of liquid is passed through it.
1.
Connect the frequency or pulse output leads of the flow
transmitter to the frequency input terminals of the Model
130/135 calibrator as shown in Figure 4.
2.
Press the Tot key and the calibrator will display:
3.
Press the Tot key again and the calibrator will display:
4.
Open the flow valve and verify that the calibrator is counting the
turbine pulses, then close the valve. Press Tot again to put the
calibrator back into the Holding mode and press CE to clear the
count to zero.
5.
Press Tot again and the calibrator will return to Counting mode
and is ready to totalize the turbine pulses.
6.
Open the flow valve and allow a measured amount of liquid into
the proof vessel. When the level reaches the desired mark, press
the Tot key again to hold the current count. The displayed count
indicates the total number of pulses from the turbine for the
measured volume of liquid.
Application Notes
130/135 50
Holding SELECT
OUTPUT
Counting SELECT
OUTPUT