Save time and money by measuring output signals without shutting down the system. The Fluke 773 Milliamp Process Clamp Meter is an accurate, versatile, and highly portable tool designed to measure 4–20 mA signals five times faster than traditional multimeters, all without breaking the loop. This means you can troubleshoot live devices without powering down, ensuring you don't miss any critical process information.
Key Features
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Non-Intrusive Measurements: Measure 4–20 mA signals without breaking the loop.
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Versatile Troubleshooting: Ideal for transmitters, valves, and programmable logic controllers (PLCs) in process plants.
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Detachable Clamp: Remote jaw with extension cable for measurements in tight spaces.
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Advanced Loop Troubleshooting: Measure and source mA signals, apply mA inputs, and measure outputs on devices like valves or mA isolators.
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Integrated Measurement Spotlight: Illuminate hard-to-see wires in dark enclosures.
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Dual Backlit Display: Simultaneously shows mA measurement and percent of 4 to 20 mA span.
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Hold Function: Capture and record measurements easily.
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Battery Life Optimization: Automatic power-off features conserve battery life.
Product Overview
The Fluke 773 allows you to connect to a mA loop in a traditional series workflow to measure, source, or simulate a control system. It measures up to 99.0 mA non-contact, including 10 to 50 mA signals in older control systems. Additionally, it sources and measures DC voltage, making it useful for troubleshooting voltage input and output devices that accept a 1-5 V or 0 to 10 V signal.
You can detach the clamp section of the meter and use it as a remote jaw, connected by an extension cable, to make measurements in tight or hard-to-reach spaces.
Advanced Loop Troubleshooting
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mA Scale Feature: Measure a mA signal without breaking the loop and output that signal to another device for recording.
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Simultaneous Measurement: mA in-circuit measurement with 24 V loop power for powering and testing transmitters.
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Signal Application: Apply a mA input signal to a device and measure its 4-20 mA output on devices such as valves or mA isolators.
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Output Functions: Offers mA or voltage output linear ramp or 25% step output.
Specs
| Parameter |
Value |
| Diameter of Measurable Conductor |
0.177" or 4.5 mm max |
| Operating Temperature |
-10°C to 50°C |
| Storage Temperature |
-25°C to 60°C |
| Operating Humidity |
< 90% @ <30°C, < 75% @ 30°C to 55°C |
| Operating Altitude |
0 to 2000 meters |
| IP Rating |
IP40 |
| Size |
44 x 70 x 246 mm (2 7/8 x 5 ¾ x 11 5/8 in) |
| Weight |
410 g (14.4 oz) |
| Vibration |
Random 2 g, 5 to 500 Hz |
| Shock |
1-meter drop test (except the jaw) |
| EMI/RFI |
Meets EN61326-1 |
| Temperature Coefficient |
0.01% per °C (< 18°C or > 28°C) |
| Power, Battery Life |
(4) AA 1.5 V Alkaline, IEC LR6, 12 hours in mA source into 500 ohms |
| Warranty |
Three years for electronics; One year for cable and clamp assembly |
Functional Specifications
| mA Measurement (Measured by Clamp) |
| Function |
Range/Resolution |
Accuracy |
| mA Measurement |
0 to 20.99 mA |
±0.2% + 5 counts |
|
21.0 mA to 100.0 mA |
±1% + 5 counts |
| mA Measurement (Measured In Series with Test Jacks) |
| Function |
Range/Resolution |
Accuracy |
| mA Measurement |
0 to 24.00 mA |
±0.2% + 2 counts |
| mA Source (Maximum mA Drive: 24 mA into 1,000 ohms) |
| Function |
Range/Resolution |
Accuracy |
| mA Source |
0 to 24.00 mA |
±0.2% + 2 counts |
| mA Simulate (Maximum Voltage 50 V DC) |
| Function |
Range/Resolution |
Accuracy |
| mA Simulate |
0 to 24.00 mA |
±0.2% + 2 counts |
| Voltage Source (2 mA Maximum Drive Current) |
| Function |
Range/Resolution |
Accuracy |
| Voltage Source |
0 to 10.00 V DC |
±0.2% + 2 counts |
| Voltage Measure |
| Function |
Range/Resolution |
Accuracy |
| Voltage Measure |
0 to 30.00 V DC |
±0.2% + 2 counts |
