72-7222 TENMA, 72-7222 Datasheet - Page 20

• Manufacturer Part Number: 72-7222
• Description: MULTIMETER, DIGITAL, CLAMP, 3-1/2 DIGIT
• Manufacturer: TENMA

Specifications of 72-7222

• Dmm Type: Clamp
• Voltage Measuring Range Dc: 200mV To 600V
• Voltage Measuring Range Ac: 2V To 600V
• Current Measuring Range Ac: 2A To 400A
• Temperature Measuring Range: -40°C To +1000°C

Measurement Operation(5)
D.Testing Diodes
To avoid damage to the Meter or to the devices under
test, disconnect circuit power and discharge all the
high-voltage capacitors before testing diodes.
Use the diode test to check diodes, transistors, and other
semiconductor devices. The diode test sends a current
voltage drop across the junction. A good silicon junction
drops between 0.5V and 0.8V.
To test the diode out of a circuit, connect the Meter as
follows:
through the semicondutor junction, then measure the
1. Insert the red test lead into the
2. Set the rotary switch to
3. For forward voltage drop readings on any semiconductor
the black test lead into the COM terminal.
button to select
component, place the red test lead on the component’s
anode and place the black test lead on the component’s
cathode.
Warning
(see figure 6)
measurement mode.
19
Model 72-7222: OPERATING MANUAL
and press SELECT
red
V terminal and
black