Metravi 771+ Digital Milliamp Process Clamp Meter

The Metravi 771+ Digital Milliamp Process Clamp Meter is a specialized tool designed for accurate measurement of low current signals in process control loops. It is ideal for troubleshooting and calibrating 4-20mA current loops without breaking the circuit, making it a valuable tool for instrumentation technicians and engineers. Below are the detailed specifications and features of the Metravi 771+:

Key Specifications:

• Model: 771+
• Brand: Metravi
• Measurement Type: True RMS (T-RMS) for accurate readings of both AC and DC current.

Measurement Capabilities:

• Current Measurement Range:
  • DC Current: 0-20mA, 0-100mA (High precision for 4-20mA loops)
  • AC Current: 0-20mA, 0-100mA (True RMS)
• Resolution: 0.01mA, enabling precise measurements of low current signals.
• Accuracy: Typically ±0.2% for DC current measurement, ensuring reliable readings.
• Loop Current Measurement: Specially designed for measuring 4-20mA signals without breaking the loop.

Features:

• Clamp Jaw Design: The clamp meter is designed to measure current by clamping around the wire, making it easy to measure current in tight spaces without interrupting the circuit.
• True RMS Measurement: Ensures accurate readings even when dealing with non-linear loads or distorted waveforms.
• Data Hold: Allows freezing the current reading on the display for easy data recording.
• Auto Ranging: Automatically adjusts the range for measurements, simplifying the process.
• Backlit Display: Large, backlit LCD for easy reading in low-light conditions.
• Auto Power Off: Conserves battery life by turning off automatically after a period of inactivity.
• Low Battery Indication: Alerts the user when the battery is running low, ensuring uninterrupted operation.

Power Source:

• Battery Operated: Uses standard alkaline batteries, making it portable and convenient for field use.
• Battery Type: Typically 9V battery for extended usage.

Safety and Compliance:

• Safety Rating: CAT III 300V, suitable for industrial environments and providing safety for the user during measurements.
• Overload Protection: Protects the meter from potential damage due to excessive current, enhancing its durability.
• Certifications: Conforms to international standards like IEC 61010-1 for safe and reliable operation.

Physical and Design:

• Compact and Lightweight: Ergonomic design makes it easy to handle during field work.
• Color: Typically available in a durable blue or black finish.
• Warranty: One year against manufacturing defects.

Applications:

The Metravi 771+ Digital Milliamp Process Clamp Meter is particularly well-suited for:

• 4-20mA Process Loop Testing: Non-intrusive testing for instrumentation loops.
• Troubleshooting PLC and DCS Systems: Ideal for maintenance and verification of current signals.
• Control Valves and Transmitter Calibration: Verify the output signal from field instruments.
• Industrial Automation: Ensures accurate readings in automation and control processes.