Yokogawa CA450 Process Multimeter

Overview Yokogawa CA450 Process Multimeter

The Yokogawa CA450 Process Multimeter is a professional-grade handheld instrument designed for loop checking, transmitter simulation, and precision signal measurement in industrial process environments. Developed by Yokogawa, the CA450 combines the functionality of a loop calibrator and a digital multimeter into one compact, rugged tool.

It supports simultaneous 24 V loop power and mA measurement, making it ideal for commissioning, maintenance, and troubleshooting of control loops in DCS, PLC, and field instrumentation systems.

Features and Performance

- Loop Check & Transmitter Simulation
Supports SIMULATE (SINK) mode to emulate transmitters and verify loop integrity.
- 24 V Loop Power with mA Measurement
Power the loop while measuring current simultaneously, simplifying field testing.
- 4–20 mA Output Functions
Span, step, auto-step, and sweep output for fast and accurate loop testing.
- HART Mode Support (250 Ω Resistor)
Built-in resistance setting for HART-compatible loop checks (without full HART communication).
- High-Accuracy Signal Measurement
DC mA accuracy up to 0.05%, measuring signals up to 30.000 mA with confidence.
- Handheld DMM Capabilities
Measures voltage, resistance, and frequency, reducing the need for multiple tools.
- Peak / Hold Function
Ideal for detecting DCS power fluctuations and peak-to-peak measurements.
- Safety-Oriented Design
Current terminal shutter minimizes incorrect connections and reduces electric shock risk.

Why You Should Buy it

- Combines process loop testing and DMM functions in one device
- Ideal for 4–20 mA loop commissioning and maintenance
- High measurement accuracy trusted in industrial environments
- Supports HART loop testing requirements via resistor mode
- Compact, lightweight, and field-ready design
- Backed by 36-month Yokogawa warranty