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