The Yokogawa Process Multimeter CA450 is a portable test instrument that combines a digital RMS multimeter and a loop calibrator, allowing process technicians to efficiently perform their tasks using a single tool. The Yokogawa CA450 provides 24-Volt loop power, reducing the need for carrying a separate power supply when performing transmitter testing. And with its built-in, selectable 250-Ohm Hart resistor, it also eliminates the need for a separate resistor.
Technicians involved in industrial process maintenance must troubleshoot a variety of instrumentation in the field. This necessitates carrying a wide variety of tools and electrical equipment such as digital multimeters and calibrators/sorucing devices. Individual, single purpose devices may not have the varied functionality needed for equipment validation, in addition to being cumbersome and inefficient to carry. In these situations, a device that can source, measure, and have PC compatibility would be the perfect instrument for the task. The CA450 Process Calibrator is defined by:
Standard Accessories
Optional Accessories
See Yokogawa CA450 Manual below for complete safety and operating instructions.
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.
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.
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.