YOKOGAWA CA71 Multifunction Process Calibrator

Product Description

YOKOGAWA CA71 is a Portable Multifunction Process Calibrator designed for calibration, testing, and maintenance of industrial instrumentation. It can simultaneously source and measure voltage, current, resistance, thermocouple (TC), RTD, frequency, and pulse signals, making it suitable for commissioning and troubleshooting process control equipment.

The CA71 is a compact handheld calibrator commonly used by instrumentation engineers for verifying transmitters, sensors, controllers, and field devices in industrial plants.

Specifications

• Brand: YOKOGAWA
• Model: CA71
• Product Type: Multifunction Process Calibrator
• Application: Industrial instrument calibration and testing
• Functions:
  • Source signal output
  • Signal measurement
  • Transmitter simulation
  • Temperature measurement

Signal Generation

• DC Voltage Output: Up to 30 V DC
• DC Current Output: Up to 24 mA DC
• Frequency Output: 1 Hz to 11 kHz
• Pulse Output: Supported
• Resistance Output: Supported
• Temperature Simulation: TC / RTD simulation

Measurement

• Voltage Measurement: Up to 100 V DC
• Current Measurement: Up to 100 mA DC
• Resistance Measurement: Supported
• Thermocouple Measurement: Supported
• RTD Measurement: Supported

General Data

• Display: LCD display with backlight
• Power Supply: 4 × AA alkaline batteries or optional AC adapter
• Battery Life: Approx. 12–40 hours depending on operating mode
• Communication: RS-232 interface (optional cable)
• Operating Temperature: 0–50°C
• Dimensions: Approx. 190 × 120 × 55 mm
• Weight: Approx. 730 g (including batteries)

Advantages & Features

• Multi-function calibration capability in one instrument
• Supports voltage, current, resistance, TC, RTD and frequency signals
• Can simultaneously generate and measure signals
• Built-in reference junction compensation for temperature measurement
• Auto-step and sweep output functions simplify calibration work
• Memory function stores calibration values
• Portable handheld design for field maintenance
• High reliability for industrial instrumentation applications

Applications

• Process transmitter calibration
• Temperature controller testing
• Pressure transmitter verification
• Flow meter calibration
• Industrial automation maintenance
• DCS/PLC input-output testing
• Instrumentation commissioning
• Chemical, oil & gas, power plant maintenance

Notes

• CA71 is a calibration instrument, not a PLC module or controller
• Verify required signal type before use (mA / V / TC / RTD)
• Use correct test leads and accessories
• Check battery condition before field operation
• Calibration should be performed according to instrument accuracy requirements