Amprobe AC75, User Manual

4 

Introduction 

The AC75B digital clamp-on multimeter, is a fully featured meter that also 
measures temperature using a Type K probe (included). The AC75B has full 
Category safety ratings and is CAT III, 600 V. 

Making Measurements 

Measurement Functions 

•

AC and DC Volts (

V

/

v

)  

See Figure 

-4-

•

Resistance (

O

) See 

Figure 

-5-

•

Diode/Continuity (

G

/

C

) See 

Figure 

–6-

•

DC Current (DC 

μ

A) See 

Figure 

–7-

•

Capacitance (

P

) See 

Figure 

–8-

•

Temperature (

°

C/

°

F) See 

Figure 

–9-

•

AC Current (

a

) See 

Figure 

–11-

Additional Features 

Auto Power Off/Auto Power Off Disable 

See Figures 

-2- and –3-

The meter will automatically shut itself off after approximately 10 minutes 
after power is turned on, or no activity has occurred with the meter. The 
meter will beep when it turns off. Turn the rotary dial to reactivate the 
meter. 
The Auto Power Off feature can be disabled to keep the meter from going to 
sleep. Press the 

BACKLIGHT

 button and then switch the rotary knob to 

power on the meter. 

Backlight 

 See 

Figure 

-12-

The AC75B backlight illuminates the entire display for easy measurement 
viewing in dark work environments. The backlight is activated for 60 
seconds once the button is pressed. 

HOLD Measurements

 See 

Figure 

-10-

The 

HOLD

 button allows the meter to capture and continuously display a 

measurement reading. To use the 

HOLD

 feature, make a measurement, 

when the reading has stabilized, press the 

HOLD

 button. The measurement 

value will be captured on the display. Press the 

HOLD

 button again to 

release the value. 

Product Maintenance 

Maintenance 

Do not attempt to repair this meter. It contains no user serviceable parts. 
Repair or servicing should only be performed by qualified personnel. 

Cleaning 

To clean the meter, periodically wipe the case with a soft moistened cloth. 
To avoid damage to the plastic components do not use benzene, alcohol, 
acetone, ether, paint thinner, lacquer thinner, ketone or other solvents to 
clean the meter.