Product selection guide: mA loop calibrators | Fluke
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Product selection guide: mA loop calibrators

Use our product selection guide to find the calibration tool that fits your needs best.
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Fluke 773 Milliamp Process Clamp Meter
Fluke 789 ProcessMeter™
Fluke 773 Milliamp Process Clamp MeterFluke 789 ProcessMeter™

End user

Process Technician / Engineer  
Residential / Commercial Electrician  

Mechanical, environmental and safety ratings

Category ratingsCAT II 300 V 

Measurements

DC volts  
DC current  
Voltage ac/dc1000 V 
Current ac/dc440 mA (1 A) 
Resistance40 MΩ 
Frequency20 kHz 
Duty cycle  
Pulse width  
Continuity with beeper  
Diode test  
4-20 mA loop current as % readout  

Special features

Flashlight / torch  

Display

Backlight   
Display hold  
DisplayBacklight 
Dual display  
Analog bargraph  

Specifications

Jaw opening0.177 in (4.5 mm) 
Current range DC0 - 99.9 mA 
Accuracy DC current: ± 5 counts4-20 mA is 0.2 + 5 counts 

Unit power

Auto off  

Basic features

Counts4000 
True RMS readingsAC 
Basic DC accuracy0.10 % 
Auto / manual ranging  
Digits3½ 

Category

CategorySpecialty process 

Diagnostics and data

Min-Max recording  
Auto (touch) hold  
Relative reference  
USB interface  

Other features

Source 4-20 mA loop current  
24 V loop supply  
Overmolded case, integrated holster  
Closed case calibration  
Separate battery  
Fuse access  
Automatic power off  
Low battery indication  
Operating temperature range-10 °C to +50 °C 

Warranty and safety

Warranty3 years 
EN61010-1 CAT III1000 V 
EN61010-1 CAT IV600 V