12391 NIST CAL CERT Simpson, 12391 NIST CAL CERT Datasheet - Page 17

• 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

4.5.3
4.5.4
a.
b.
c.
NOTE: When in doubt as to the voltage
present, always use the highest voltage
range as a protection to the Instrument. If
the voltage is within a lower range, the
switch may be set for the lower range to
obtain a more accurate reading. Be sure
power is off in the circuit being measured
and all capacitors discharged.
d.
e.
f.
NOTE: Turn off power to the circuit and wait until the meter indicates zero before
disconnecting the test leads.
Use extreme care when working with high
voltage circuits. Do not touch the Instrument
or test leads while power is on in the circuit
being measured.
Before proceeding with the following steps,
review the Safety Precautions in Paragraph
4.1.
a.
b.
c.
d.
DC Voltage Measurement 0-2.5 Through 0-250V Range
Set the function switch at +DC (Figure
4-2).
Plug the black test lead into the -COM-
MON jack and the red test lead into
the + jack.
Set the range switch at one of the five
voltage range positions marked 2.5V,
10V, 25V, 50V or 250V.
Connect the black test lead to the nega-
tive side of the circuit being measured
and the red test lead to the positive
side of the circuit.
Turn on the power in the circuit being
measured.
Read voltage on the black scale
marked DC. For the 2.5V range, use the 0-250 figures and divide by 100. For
the 10V, 50V, and 250V ranged, read the figures directly. For the 25V range,
use the 0-250 figures and divide by 10.
DC Voltage Measurement 0-500V Range
Set the function switch at +DC (Figure
4-3).
Set the range switch at the 250V/550V/
1000V Position.
Plug the black test lead into the -COM-
MON jack and the red test lead into the
500V jack.
Be sure power is off in the circuit being
measured and all capacitors dis-
!
17
Figure 4-2. Jacks and Switch
Positions for Measuring DC
Voltages, 0-250V Range
Figure 4-3. Jacks and Switch
Positions for Measuring DC
Voltages, 0-500V Range
+ D.C.
+ D.C.
- D.C.
- D.C.
COMMON
COMMON
-
-
+
250 V.
500 V.
I000 V.
2.5 V.
10 V.
1V.
25 V.
50 A.
250 V.
500 V.
I000 V.
AMPS.
ALL TERMINALS 1 V MAX
ALL TERMINALS 1 V MAX
260
260
+
A.C. D.C.
50
1000 V.
250 MV.
+10A
AMPS.