Quantcast Figure 4-6. Reading the Ohm Scale.

 

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Figure 4-5. Testing Resistance
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TM-5-6640-214-14 Petroleum Base Laboratory Assembly NSN
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Figure 4-7. DC Volts Scale (AN/URM-105) (Sheet 1 of 3).
TM 5-6640-214-14
(e) Read the meter (fig. 4-6). If the meter switch is on the "RX1" or "X" range, the reading is taken
directly from the top scale If the meter switch is on a different range, multiply the reading on the scale according to the
table below:
Ohms
Switch
Setting
X1 or RX1
Read number on scale
X10 or RX10
Multiply reading by 10
X100 or RX100
Multiply reading by 100
X1K or RX1K
Multiply reading by 1000
X10K or RX10K
Multiply reading by 10,000
Remember: K=1000
c. Using the DC Volts Scale (fig. 4-7). The dc volts scale is used to measure all voltage on the equipment except
the 115 ac and 220 ac voltage.
(1) Before using the multimeter to measure dc voltage, do the following steps that match the multimeter you
have:
(a) AN/URM-105. Set meter switch to dc volts range given in TM (To measure 24 volts dc, set switch on
"100 dc VOLTS" range).
Figure 4-6. Reading the Ohm Scale.
1. Set FUNCTION switch to "DIRECT". (RANGE switch can be at any position).
2. Put black lead in "DC/+AC/UHMS" jack.
4-9

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