Break the circuit open and connect the meter in series, so the current flows through the device. Connect red to the positive side of the break and black to the negative side. Turn on the circuit power to read the current. Maintenance and Battery Replacement
When the meter can no longer be adjusted to zero on the Ohm scale when the probes are touched together, the internal battery is weak. Remove the screw on the back cover of the multimeter. Carefully separate the front panel from the back housing.
End of Report
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The 22-212 was designed for simplicity and versatility in the field: Micro Precision Calibration MICRONTA 22-212 MULTIMETER - All About Circuits Forum
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Manufactured in South Korea, it features a durable build with a battery door for easy access to its power source. Essential Operations from the Manual Break the circuit open and connect the meter
Set the rotary switch to the desired range: , RX10 , or RX1k . Touch the tips of the red and black probes together.
Check the test leads for internal breaks using another meter, or verify that the internal fuse has not blown.
Read the black DC scales on the meter face. Multiply or divide the scale numbers to match your selected switch range. Measuring AC Voltage (e.g., Wall Outlets, Transformers) Maintenance and Battery Replacement When the meter can
Read the voltage using the specific scale lines on the display dial. 4. Measuring Resistance (Ohms / Ωcap omega
Adjuster: A small knob used to zero the needle when testing resistance. A red lead (+) and black lead (COM). 2. Preparing for Operation (User Manual Basics)
: Uses a single AA battery for resistance (ohms) measurements. Operating Instructions Zeroing the Meter :
attempt to measure voltage when the meter is set to the OHM or mA positions; doing so will immediately blow the internal fuse or permanently ruin the meter movement.
Check for a blown internal fuse or a dead AA battery.