12211 Simpson, 12211 Datasheet - Page 15

• Manufacturer Part Number: 12211
• Description: MULTIMETER, ANALOG, 7 FUNCTIONS
• Manufacturer: Simpson

Specifications of 12211

• Voltage Measuring Range Dc: 250mV To 1000V
• Voltage Measuring Range Ac: 2.5V To 1000V
• Current Measuring Range Dc: 50µA To 5A
• Current Measuring Range Ac: 250A
• Range Selection: Manual
• Accuracy: +/- 2 %
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

screw located in the meter cover below the center of the dial. Use a small screw-
driver to turn the screw slowly clockwise or counterclockwise until the pointer rests
freely over the zero mark at the left end of the scale. This procedure will avoid
disturbances to the zero setting by subsequent changes in temperature, humidity,
vibration and other environmental conditions.
4.4
When making DC measurements with the test leads connected to the + and –
COMMON jacks, polarity can be reversed with the function switch without revers-
ing the test leads. When making measurements of the 50 µA/250 mV range, or 5A
range, polarity can be corrected only by reversing the test leads.
Change the range switch or function switch positions only when the power to the
circuit being measured is turned off or when the test leads are disconnected. In
addition to ensuring safety, this practice will eliminate arcing at switch contacts
and prolong the life of the Instrument.
4.5
a.
b.
c.
d.
If the reset button trips, the 9V battery is in good condition.
No damage will occur as a result of this test.
4.6
Prior to making voltage measurement, review the SAFETY PRECAUTIONS listed
in paragraph 4.2.
4.6.1
a.
b.
c.
d.
e.
f.
4.6.2
a.
b.
Rotate the range switch to the RX10k position.
Set the function switch to the - DC position.
Plug the black test lead into the –COMMON jack.
Touch the other end of the black test lead to the 50 µA/250 mV jack.
Set the function switch to + DC.
Plug the black test lead into the –COMMON jack and the red test lead into the
+50 µA/250 mV jack.
Set the range switch to the 25V (50 µA) position.
Connect the black test lead to the negative side of the circuit being measured
and the red test lead to the positive side of the circuit.
Turn power on and read the voltage on the black scale marked DC and use
the figures marked 0-250. Read directly in millivolts.
Turn the power off and disconnect the test leads. Return the range switch to
the OFF/TRANSIT position.
Set the function switch to +DC.
Plug the black test lead into the –COMMON jack and the red test lead into the
+ jack.
Polarity Connection
Overload Protection Circuit and Battery Test
DC Voltage Measurement
Measuring DC Voltage: 0-250 mV
Measuring DC Voltage: 0-1 through 0-500V
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