12211 Simpson, 12211 Datasheet - Page 21

• 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

5.
NOTE: When the Instrument is not in use, do not leave the range switch in the low
4.11.2
a.
b.
c.
d.
e.
f.
g.
The 260 is designed and constructed with high-quality components. By providing
reasonable care and following the instructions in this manual, the user can expect
a long service life from these Instruments.
Before opening the battery compartment cover, disconnect the test leads from live
circuits.
5.1
The batteries and 1A fuse are located inside an isolated compartment at the top-
rear of the Instrument case. To open the compartment, proceed as follows:
NOTE: If replacement of the 2A high current interrupting fuse is necessary, the
Instrument case must be removed.
a.
b.
c.
Battery replacement is necessary whenever the Instrument cannot be adjusted to
infinity (") with open test leads on the low power ohm ranges, or with shorted test
leads on the conventional ohm ranges. If these adjustments cannot be made,
replace the 1.5V D size cell. If the ohms adjustment cannot be made on the
RX10k range or the reset button does not trip on overload circuit and battery test,
replace the 9V battery.
power ohms position because power is drawn continuously from the 1.5V
battery.
Turn the range switch to the desired range and the function switch to either
the +DC or -DC position.
Plug the black test lead into the -COMMON jack and the red test lead into the
+jack.
Connect the ends of the test leads to short-circuit the Instrument’s resistance
measuring circuit.
Rotate the OHMS ADJ control to set the Instrument pointer to 0 on the black
ohms arc. If the pointer cannot be adjusted to 0, replace the 1.5V battery.
Replace the 9V battery if the RX10k range cannot be adjusted to full scale
(zero ohms). For battery replacement, refer to paragraph 5.2.
Disconnect the ends of test leads and connect to component being mea-
sured.
Read the resistance on the black ohms scale. Multiply the reading by the
factor indicated on the range switch.
Disconnect ends of test leads and return the range switch to the OFF/TRAN-
SIT position.
OPERATING SERVICING
Place the Instrument face down on a soft padded surface.
Unscrew the single captivated screw on the cover.
Remove the cover from the case and set it aside. Batteries and fuse can now
be replaced.
Battery and Fuse Replacement
Measuring Resistance: Conventional Ohm Ranges
21
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