Calibrator Multimeter Accuracy 0.1% Process Multimeter for Measurement, Output, and Loop Testing 77+

1. More Than a Multimeter – A True Process Multimeter

The 77+ is not just an ordinary multimeter; it is a dedicated Process Multimeter engineered for industrial calibration, loop troubleshooting, and instrument maintenance. While standard multimeters can only measure, this Process Multimeter combines high-accuracy measurement with flexible analog output, 24V loop power, and waveform generation. Whether you are testing a transmitter, simulating a sensor, or validating a control loop, the 77+ Process Multimeter delivers everything you need in one handheld device.

2. High-Accuracy Measurement You Can Trust

As a professional Process Multimeter, the 77+ offers a maximum measurement accuracy of 0.1% with a 4-digit display. Measurement functions include:

• DC voltage: -51.00V to 51.00V (0.1% + 0.04V)
• AC voltage: 0.0V to 510.0V (1% + 1V)
• DC current: -50.00mA to 50.00mA (0.1% + 0.04mA)
• Resistance: 0–5.100kΩ / 0–510.0Ω (0.1% accuracy)
• Diode test and continuity beeper (buzzer at ≤50Ω)

This Process Multimeter also features VFC (Variable Frequency Voltage Measurement) for accurate readings on variable frequency drives – a common requirement in modern motor control systems. The data hold function lets you freeze readings for easy recording, making this Process Multimeter ideal for both panel and field use.

3. Flexible Analog Output – Simulate Any 4–20mA Loop

Unlike basic multimeters, the 77+ Process Multimeter includes powerful sourcing capabilities:

• DC voltage output: -1.00V to 11.00V (0.2% + 0.04V)
• DC current output (active): 0.00–22.00mA (0.2% + 0.04mA)
• DC current output (passive / SIMULATE): 0.00–22.00mA (0.2% + 0.04mA)

The passive (simulate) mode allows this Process Multimeter to act as a 2-wire transmitter, enabling it to be inserted directly into an existing loop without an external power supply. The output current can be selected as 0–20mA or 4–20mA, with a built-in percentage display mode for quick reference. This makes the 77+ the most practical Process Multimeter for calibrating valve positioners, I/P converters, and pressure transmitters.

4. Manual Step & Automatic Waveform Output

When sourcing DC current, this Process Multimeter provides both manual stepping and automatic waveform output functions. Manual step includes:

• 25% step – ideal for quick linearity checks of 4–20mA loops
• 100% step – for full-span testing and valve stroke verification

Automatic waveform output supports auto-step, sawtooth wave, and triangular wave with fully configurable parameters. This turns the 77+ Process Multimeter into an automated test tool, allowing you to simulate process upsets, ramp testing, and periodic sensor drift without constant manual intervention.

5. Built-in 24V Loop Power Supply

One of the most valuable features of this Process Multimeter is the internal 24V loop power supply (accuracy ±10%). With this, you can power a 2-wire transmitter directly from the 77+ while simultaneously measuring its output current. No external bench supply or battery pack is needed. This single feature transforms the 77+ from a simple measurement tool into a complete loop diagnostic station, saving time and reducing equipment clutter.

6. Designed for the Field – Rugged & Practical

The 77+ Process Multimeter is built for real-world working conditions. Key practical features include:

• Flashlight for illuminating dark cabinets and junction boxes
• Backlight on the LCD display for low-light environments
• Auto power-off to conserve battery life
• Low battery indication so you are never caught unprepared
• Data hold to capture and freeze readings

Powered by 3×1.5V AA batteries, weighing approximately 500g, and measuring 185mm × 90mm × 54mm, this Process Multimeter is compact enough for a tool bag yet substantial enough for daily industrial use. Standard accessories include test leads, alligator clips, a fuse, and a manual.

7. VFC & Waveform Output – Advanced Capabilities

The VFC (Variable Frequency Voltage Measurement) function allows this Process Multimeter to accurately measure voltage in noisy environments with variable frequency drives, eliminating false readings caused by harmonics. The waveform output capability (auto-step, sawtooth, triangle) further distinguishes the 77+ from ordinary multimeters, giving you the ability to generate dynamic signals for testing control system responses, chart recorders, and data loggers.