Process Multimeter CA450

See Yokogawa CA450 Manual below for complete safety and operating instructions.

Yokogawa CA450 Manual Excerpt:

4.3.1     AC Voltage Measurement

1) Turn the function switch to the “ ” or “mV” position.
2) If you turned the function switch to “mV,”
press SELECT. (“ ” is displayed.)
3) Insert the test leads into the input terminals.
4) Connect the test leads to the circuit under
measurement, and then read the value
when it stabilizes.

4.3.2     DC Voltage Measurement

1) Turn the function switch to the “ ” or “mV” position.
2) Insert the test leads into the input terminals.
3) Connect the test leads to the circuit under
measurement, and then read the value
when it stabilizes.

4.3.3     Measuring Using Sensors (SENSOR)

You can use this function to measure the output of a current sensor or other type of
sensor that converts its measured values into voltages, to convert the voltages
into the original measured values, and to display the converted values.
Before you perform measurement, you need to configure unit, conversion,
and other settings.
See section 4.6.2 “SENSOR Mode Input, Display, and Unit Settings.”
1) Turn the function switch to the “mV” position.
2) Press SHIFT+SELECT to switch to DC SENSOR mode.
To switch to AC SENSOR mode, press SELECT again.
The input voltage appears in the subdisplay.
In the main display, the value converted using the settings configured in
section 4.6.2 “SENSOR Mode Input, Display, and Unit Settings.”

3) Connect the sensor that you will use to the input terminals.
4) Read the value when it stabilizes.
To return to normal mV measurement, press SHIFT+SELECT again.