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Chapter 10 Specifications
176
Measurement Specifications
(1) Resistance Measurement Accuracy
Conditions of guaranteed accuracy
Warm-up time At least 30 minutes
Integration time Set longer than the initial "Integration Time Setting" (p. 169)
for the default PLC setting, unspecified for ms setting
Temperature and humidity
range for guaranteed accu-
racy 23±5°C, 80%RH or less
Period of guaranteed
accuracy 1 year
Temperature variation after self-calibration is within ±2°C.
Add thermal coefficient (±1/10th of measurement accuracy per °C) from 0 to 18°C and from 28 to 40°C.
Low Power OFF
Accuracy %rdg.+%f.s. (calculated as f.s. = 1,000,000dgt, or 0.001% f.s. = 10 dgt)
Low Power ON
Accuracy %rdg+%f.s. (calculated as f.s. = 1,000,000dgt, or 0.001% f.s. = 10 dgt)
*1 Negative values can be up to 10% of positive full scale.
*2 Measurement current accuracy is
±
5%
*3 Less than 20 mV when not measuring, with Pulse current mode and Contact Improver set to OFF or Pulse
(by 10-M

input-impedance voltmeter)
*4 The sum of resistances of the cables, sample, and contacts should be no larger than that calculated by (open-circuit
voltage) / (measurement current).
Example: 100 mA measurement current can be used when the sum of resistances of the cables, sample, and con-
tacts is no more than 20

.
•
f.s. (maximum display value) The maximum displayable value. This is usually the name of the currently selected
range.
•
rdg. (reading or displayed value) The value currently being measured and indicated on the measuring instrument.
•
dgt. (resolution) The smallest displayable unit on a digital measuring instrument, i.e., the input value that causes the
digital display to show a “1” as the least-significant digit.
Range Max. Display

1
FAST MED SLOW
Measurement
Current

2
Open-Terminal
Voltage
100m

120.0000 m

0.015+0.008 0.015+0.003 0.015+0.002 100 mA
20 V
MAX

3,

4
1000m

1200.000 m

0.012+0.003 0.012+0.002 0.012+0.001 100 mA
10

12.00000

0.010+0.003 0.008+0.002 0.008+0.001 10 mA
100

120.0000

0.009+0.003 0.007+0.002 0.007+0.001 10 mA
1000

1200.000

0.008+0.003 0.006+0.002 0.006+0.001 1 mA
10k

12.00000 k

0.009+0.003 0.007+0.002 0.007+0.001 1 mA
100k

120.0000 k

0.010+0.003 0.007+0.002 0.007+0.001 100

A
1000k

1200.000 k

0.010+0.003 0.008+0.002 0.008+0.001 10

A
10M

12.00000 M

0.030+0.004 1

A
100M

120.0000 M

0.100+0.020 100 nA
Range Max. Display

1
FAST MED SLOW
Measurement
Current

2
Open-Terminal
Voltage
1000m

1200.000 m

0.010 + 0.008 0.008 + 0.003 0.008 + 0.002 10 mA
20 V
MAX

3,

4
10

12.00000

0.010 + 0.008 0.008 + 0.003 0.008 + 0.002 1 mA
100

120.0000

0.010 + 0.003 0.008 + 0.002 0.008 + 0.001 1 mA
1000

1200.000

0.020 + 0.003 0.008 + 0.002 0.008 + 0.001 100

A