12391 NIST CAL CERT Simpson, 12391 NIST CAL CERT Datasheet - Page 16

• Manufacturer Part Number: 12391 NIST CAL CERT
• Description: Analog Multimeters 260-8P VOM NIST CAL CERT W/O DATA
• Manufacturer: Simpson

Specifications of 12391 NIST CAL CERT

• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

4.4
4.5
4.5.1
4.5.2
Test leads are provided with accessory screw-on alligator clips which may be
attached to the probe tips. Eliminating the need to hand-hold test prods to a circuit
for extended periods, the test clips also reduce hand proximity to a high voltage
circuit while energized. Circuit power must of course be turned off and any charged
capacitors discharged before connecting or disconnecting clips to or from the
current.
Before making voltage measurements, review the SAFETY PRECAUTIONS listed
in paragraph 4.1. Also, when using the 260 as a millivoltmeter, take care to pre-
vent damage to the indicating instrument from excessive voltage.
Before using the 250 millivolt range, use the 1.0-volt DC range to determine that
the voltage measured is not greater than 250 millivolts (or .25 volt DC).
a.
b.
c.
d.
e.
NOTE: For polarity reversing see paragraph 4.2.
a. Set the function switch at +DC (Figure
b. Plug the black test lead into the -COM-
c. Set the range switch at 1V (COMMON
d. Connect the black test lead to the nega-
e. Read the voltage on the black scale
NOTE: For polarity reversing see para-
Test Leads
DC Voltage Measurement
DC Voltage Measurement 0-250 mV Range
Set the function switch at +DC (Figure 4-1).
Plug the black test lead in the -COMMON jack and the red test lead into the
+50µAmps/250mV/10A jack.
Set the range switch at 50 µAmps (COMMON) position with 50V.
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.
Read the voltage on the black scale marked DC and use the figures marked
0-250. Read directly in millivolts.
DC Voltage Measurement 0-1V Range
4-1).
MON jack and the red test lead into
the +1V jack.
position with 10V).
tive side of the circuit being measured
and the red test lead to the positive
side of the circuit.
marked DC and use the figures
marked 0-10. Then divide the reading
by 10.
graph 4.2.
16
!
Figure 4-1. Jacks and Switch
Positions for Measuring DC Voltages,
0 through 1V Ranges
+ D.C.
- D.C.
+ D.C.
- D.C.
COMMON
-
+
10 V.
1V.
50 A.
AMPS.
ALL TERMINALS 1 V MAX
260
+1V.
+
50
250 MV.
+10A
AMPS.