10
Conditions of guaranteed accuracy
•
Temperature & humidity: 23 ˚C ±5 ˚C, 80% rh or less (non-condensating)
•
From 0°C to 18°C and from 28°C to 40°C, add (temperature coefficient
±[1/10 measurement accuracy] / °C).
•
Guaranteed Accuracy Period: 1 year
•
RM3545 only: Warmup time of 60 min. or greater (If less than 60 min.,
double figures in the accuracy table to obtain the measurement accuracy.)
•
RM3545 only:
self-calibration AUTO
*When using manual self-calibration, temperature fluctuations after performing calibration must be within ±2°C, and the calibration interval must be within 30 min.
Measurement accuracy
RM3544
RM3545
t
0
: Reference temperature. [ºC]
t : Ambient temperature. [ºC]
Δt : Temperature. measurement
accuracy
α
t
0
: Temperature. coefficient at t
0
is
[1/ºC]
-
α
t
0
Δt
1
+
α
t
0
×
(
t
+
Δt
-
t
0
)
×
100 [%]
* During temperature correction, the value calculated below is added to
the rdg. error for resistance measurement accuracy:
Accuracy = ±(% rdg. + % f.s.)
LP OFF
• f.s. = calculated 1,000,000 dgt., where 0.001% f.s. = 10 dgt.
•
For 100 MΩ and greater ranges with 100 MΩ range high-precision mode off, calculate as f.s. = 10,000 dgt. and 0.01% f.s. = 1 dgt.
Range
100MΩ
range high-
precision
mode
Max.
measurement
display
*1
Reso-
lution
Accuracy %rdg. + %f.s.
*2
Measurement
current
*3
Additional
accuracy
without
0ADJ
%f.s.
*2
Max open-
terminal
voltage
FAST
MED
SLOW1
SLOW2
Switching
10mΩ
–
12.000 00 mΩ
10 nΩ
0.060+0.050
0.060+0.020
0.060+0.020
–
1A
0.020
5.5V
*4
(0.060+0.015)
(0.060+0.002)
(0.060+0.001)
( – )
100mΩ
120.000 0 mΩ
100 nΩ
0.060+0.010
0.060+0.010
0.060+0.010
High
1A
0.002
(0.060+0.003)
(0.060+0.001)
(0.060+0.001)
( – )
0.014+0.050
0.014+0.020
0.014+0.020
Low
100mA
0.020
(0.014+0.015)
(0.014+0.002)
(0.014+0.001)
( – )
1000mΩ
1200.000 mΩ
1 μΩ
0.012+0.010
0.012+0.008
High
100mA
0.002
(0.012+0.003)
(0.012+0.001)
( – )
0.008+0.050
0.008+0.020
Low
10mA
0.020
(0.008+0.015)
(0.008+0.002)
( – )
10Ω
12.000 00 Ω
10 μΩ
0.008+0.010
0.008+0.008
High
10mA
0.002
(0.008+0.003)
(0.008+0.001)
( – )
0.008+0.050
0.008+0.020
Low
1mA
0.020
(0.008+0.015)
(0.008+0.002)
( – )
100Ω
120.000 0 Ω
100 μΩ
0.007+0.005
0.007+0.002
0.007+0.001
High
10mA
–
(0.007+0.005) (0.007+0.001)
(0.007+0.001)
( – )
0.008+0.010
0.008+0.010
Low
1mA
0.002
(0.008+0.003)
(0.008+0.001)
( – )
1000Ω
1200.000 Ω
1 mΩ
0.007+0.005
0.006+0.002
0.006+0.001
–
1mA
–
(0.007+0.005) (0.006+0.001)
(0.006+0.001)
( – )
10kΩ
12.000 00 kΩ
10 mΩ
0.008+0.005
0.007+0.002
0.007+0.001
1mA
–
20V
100kΩ
120.000 0 kΩ 100 mΩ 0.008+0.005
0.007+0.002
0.007+0.001
100μA
1000kΩ
1200.000 kΩ
1 Ω
0.015+0.005
0.008+0.002
0.008+0.001
10μA
10MΩ
12.000 00 MΩ
10 Ω
0.030+0.005
0.030+0.002
0.030+0.001
1μA
100MΩ
ON
120.000 0 MΩ
100 Ω
0.200+0.005
0.200+0.002
0.200+0.001
100nA
OFF
120.00 MΩ
10 kΩ
10.00MΩ or less : 0.50+0.02
10.01MΩ or more : 1.00+0.02
Max.
1μA
1000MΩ
OFF
1200.0 MΩ 100 kΩ
100.0MΩ or less : 1.00+0.02
100.1MΩ or more : 10.00+0.02
*1
For negative values, to -10% f.s. The maximum display range is 9,999,999 dgt. or 9 GΩ. (An over-range error will be indicated when the maximum measurement range is exceeded, even
if the maximum display range is not exceeded.)
*2 Measurement accuracy figures reflect accuracy after zero-adjustment. If not performing zero-adjustment, add the figures shown in the “Additional accuracy without 0ADJ” column.
Figures shown in parentheses on the second line indicate the additional accuracy with OVC on.
*3 Measurement current accuracy is ±5%.
*4 When using an external trigger source or performing measurement with continuous measurement set to off (other than free-run), the open-circuit voltage from 1 ms after the completion
of measurement (INDEX = ON) to the start of the next measurement (TRIG = ON) is limited to 20 mV or less.
LP ON
• f.s. = calculated 100,000 dgt., where 0.001% f.s. = 1 dgt.
Range
100MΩ
range high-
precision
mode
Max.
measurement
display
*1
Reso-
lution
Accuracy %rdg. + %f.s.
*2
Measurement
current
*3
Additional
accuracy
without
0ADJ
%f.s.
*2
Max open-
terminal
voltage
FAST
MED
SLOW1
SLOW2
Switching
1000mΩ
–
1200.00 mΩ
10 μΩ
0.200+0.010
0.200+0.010
0.200+0.005
0.200+0.003
–
1mA
–
20mV
*5
10Ω
12.000 0 Ω
100 μΩ
0.200+0.005
0.200+0.005
0.200+0.003
0.200+0.002
500μA
100Ω
120.000 Ω
1 mΩ
0.200+0.005
0.200+0.005
0.200+0.003
0.200+0.002
50μA
1000Ω
1200.00 Ω
10 mΩ
0.200+0.005
0.200+0.005
0.200+0.003
0.200+0.002
5μA
*1 For negative values, to -10% f.s. The maximum display range is 9,999,999 dgt. or 9 GΩ. (An over-range error will be indicated when the maximum measurement range is exceeded, even
if the maximum display range is not exceeded.)
*2 Measurement accuracy figures reflect accuracy after zero-adjustment. LP values apply only when OVC is on.
*3 Measurement current accuracy is ±5%.
*5 When the contact check function is off (when the contact check function is on, 300 mV)
Resistance measurement accuracy
RM3545
RM3545
(
Example) 0.006 + 0.001 ....... 0.006
%
rdg. + 0.001
%
f.s.
