This website uses cookies to implement certain functions. If you use this website you agree to our Privacy Policy.
News and Information about the Test of Electronics in Research & Design, Production, Maintenance, and Installation.  

Newsletter

Register to our newsletter
Every two weeks -
all news at a glance
captcha 

News - Service/Maintenance Test

Yokogawa-ca450Process Multimeter with integrated Calibrator

09 February 2011 - The new Yokogawa CA450 process multimeter is an on-site measuring instrument that not only offers the functionality of a digital multimeter for basic measurements such as voltage, current, and resistance, but can also act as a calibrator for electrical and process measurements. With specialised functions for repair, maintenance, and troubleshooting of plant equipment, the CA450 is a single-unit, on-site measuring solution that reduces the engineering load and improves plant efficiency by accomplishing tasks that have traditionally required two on-site measuring instruments.

The CA450 is a true RMS digital multimeter with a basic measurement and generator accuracy of 0.05% and dedicated sensor modes for direct inputs from sensors such as AC/DC clamp probes. In addition, it incorporates a number of process-related features including loop check and 4-20 mA output generation and measurement functions.

With the loop check function, designed for tests on 2-wire transmitters, the CA450 supplies 24 VDC power to the transmitter and measures the DC output in milliamperes to an accuracy of 0.05% up to 30 mA. A HART mode with loop power and 250 ohm resistance allows HART and BRAIN communications to be tested. A transmitter simulator function allows transmitter I/O to be checked by drawing in ('sinking') designated currents from the external voltage generators of the instrumentation. The 4-20 mA generator output includes span, step, auto-step and sweep capabilities.

The CA450 can also be used to carry out operating checks and adjustments on valve positioners, including zero span adjustment, response testing using the auto-step function, and tests for hunting, sticking/slipping and valve open/close errors. Controller programs can also be verified using the CA450's 4-20 mA step generation function, which switches between 4 and 20 mA in 4mA output steps.

Electrical measurements include power supply peak-to-peak measurement with instantaneous detection in the DC voltage measurement mode, and AC/DC current measurement up to 180 A AC and 3000 A AC in sensor mode.

The CA450 can also be used to check panel meters for correct connection, reproducibility and errors.

The CA450 features a safe design with current terminal shutters to protect both the operator and the instrument against incorrect connection. It conforms to the 600 V CAT.4 and 1000 V CAT.3 standards. An optional adaptor allows the instrument to be linked with a PC, with data transferred via an infrared USB interface.

http://tmi.yokogawa.com


Related Articles:

No related articles found


Upcoming Events

Embedded World 2024
Nuremberg (Germany)
09 to 11 April
Control 2024
Stuttgart (Germany)
23 to 26 April
Automotive Testing Expo Europe 2024
Stuttgart (Germany)
04 to 06 June

  More events...
  See our Trade Show Calendar
  Click here