to 20mA and proceed the same way. If a calibration is not exactly accurate
the first time simply repeat the procedure until the current output reads
correct.
Using the PMH-2 as a 4-20mA Simulator
Entering
4.20
mode enables the operator to sweep the 4 to 20mA
signal current for testing, setting up or calibrating an installation for
accurate and correct performance between signal output and connected
appliance or computer interface.
4.20
mode is only a utility program to assist for testing and no modes
or values are changed or saved when using or exiting this mode.
The current output is controlled by rotating the encoder within the range
as configured in the 4mA and 20mA setup.
The displayed pH / mV generates exactly the same mA signal current
as the pH / mV input in ‘RUN’ mode. When finished with the simulator
mode exit with ‘SAVE’.
F
No modes or values are changed or saved when using 4.20 mode.
FIG 10
Calibrating 4-20mA with a multimeter.
PAGE 26
PMH-2 Instruction manual
