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Need more hours in your day?
Save time by NOT breaking the loop on 4-20 mA signal measurements.
Are you spending time:
- Taking mA measurements by removing a wire and breaking the loop
- Calling the control room to isolate a loop
- Testing analog input/output on a console
- Troubleshooting devices with mA inputs and outputs
- Repairing intermittent or erratic 4-20 mA loops
- Going back to the shop to get extra tools
If you need more time in your busy day take a good look at the Fluke 773 mA Clamp Meters. It’s designed to save you time, and money, by eliminating time wasting activities. Now you can troubleshoot and repair 4-20 mA loops without breaking the loop or bringing down the system.
Here are some specific ways the Fluke 773 Clamp Meters will help you:
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Milliamp Clamp Features
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Application
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How it saves time and money
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Measure mA signals for PLC and control system analog I/O without breaking the loop.
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Measures low level dc current
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Correlate process indication with real physical value
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Measure output signals from transmitters without breaking the loop
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Maintain and troubleshoot process and automation equipment without breaking the loop
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No disruption to the process
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Detachable clamp with extension cable
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Measurements in tight locations
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Enables measurements in difficult situations
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Source, simulate and measure mA signals in circuit (break the loop)
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Confirm non-contact measurement. ve the next tool in hand for troubleshooting (source simulate)
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Eliminates the need to return to the shop to get a loop calibrator for troubleshooting after finding a bad signal with non-contact measurement
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Source and measure VDC
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Troubleshoot voltage input and output devices.
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Measure presence of 24V loop power. Measure 1 to 5 or 0 to 10V process signals. Test chart recorders
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4 to 20 mA In/out
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Dual channel mA source and measurement for troubleshooting
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Source 4 to 20 mA signals into valves and mA signal conditioners and simultaneously measure 4 to 20 mA positioning output signals.
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4 to 20 mA scaled output
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Scaled mA output provides a mA signal output representative of the measured mA value
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Connect a logging DMM and log the mA signal without breaking the loop
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Loop power supply
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Power a transmitter
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Substitute testing of the installed 24V loop power supply. Power a transmitter and measure its mA output signal for troubleshooting.
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Dual backlit display with both mA measurement and percent of 4 to 20 mA span
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Clear measurement presentation
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Allows quick measurement evaluation
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Measurement Spotlight
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Illuminates hard to see wires in dark enclosures
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Measurement process is easier and quicker
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Measure up to 99.9 mA range non-contact
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Wide range of measurements
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Measures 10 to 50 mA signals in older control systems
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Automatic power off
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After 15 minutes and 2 minute automatic off for backlight and spotlight
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Saves battery life
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 The 773 mA Clamp Meter features: - Best in class 0.2 % accuracy
- 0.01 mA resolution and sensitivity
- Measure 4 to 20 mA signals without ”breaking the loop”
- Measure mA signals for PLC and control system analog I/O
- Dual backlit display with both mA measurement and percent of 4 to 20 mA span
- Measurement Spotlight illuminates hard to see wires in dark enclosures
- Detachable clamp with extension cable for measurements in tight locations
- Measure 10 to 50 mA signals in older control systems using the 99.9 mA range
- Automatically change the 4 to 20 mA output for remote testing
- Power saving features, auto-off, backlight timeout extend battery life
- Hold function captures and displays changing measurements
- Measure 4 to 20 mA signals with in-circuit measurement
- Simultaneous mA in-circuit measurement with 24V loop power for powering and testing transmitters
- Source 4 to 20 mA signals for testing control system I/O or I/Ps
- mA output linear ramp or 25% step output
- Automatically change the 4 to 20 mA output for remote testing
- DC voltage measurement to verify 24V power supplies or voltage I/O signals
- Source DC voltage to test input devices that accept a 1-5V or 0 to 10V signals
- Scaled mA output provides a continuous mA signal that corresponds to the 4 to 20 mA signal measured by the mA clamp
- Enables milliamp signal logging to a separate logging device without breaking the loop
- Output mA signal enables a logging DMM or other device to record the 4- to 20 mA signal without breaking the loop
- mA in/out: simultaneously measure the mA signal with the clamp and source a mA signal
- Apply a mA input signal to a device and measure its’ 4-20 mA output on devices such as valves or mA isolators
- Voltage output linear ramp or 25% step output
- Automatically change the voltage output for remote testing
What’s the difference between the 77X models?
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Environmental Specifications |
| Diameter of measurable conductor |
0.177” or 4.5 mm max |
| Operating temperature |
-10 to 50 ºC |
| Storage Temperature |
-25 to 60ºC |
| Operating Humidity |
< 90% @ <30 ºC, < 75% @ 30 to 55ºC |
| Operating Altitude |
0 to 2000 m |
| IP Rating |
IP 40 |
| 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
Note: For current measurement w/ JAW, add 1mA to
specification for EMC field strengths of 1V/m up to 3V/m. |
| Temperature Coefficient |
0.01% ºC
(<18ºC or > 28ºC) |
| 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) 771/772/773
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Resolution and Range: 0 to 20.99 mA
Accuracy: 0.2%+2 counts
Resolution and Range: 21.0 mA to 100.0 mA
Accuracy: 1% + 5 counts |
mA measurement
(Measured in series with test jacks) 772/773
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Resolution and Range: 0 to 24.00 mA
Accuracy: 0.2% + 2counts |
mA source (Maximum mA Drive:
24 mA into 1,000 ohms)
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Resolution and Range: 0 to 24.00 mA
Accuracy: 0.2% + 2counts |
mA simulate
(Maximum voltage 50 V dc)
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Resolution and Range: 0 to 24.00 mA
Accuracy: 0.2% + 2counts
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| Voltage source (2 mA maximum drive current) |
Resolution and Range: 0 to 10.00 V dc
Accuracy: 0.2% + 2counts |
| Voltatge Mesaure |
Resolution and Range: 0 to 30.00 V dc
Accuracy: 0.2% + 2counts |
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