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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 coefcient

±[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 gures in the accuracy table to obtain the measurement accuracy.)

• RM3545 only: self-calibration AUTO

*When using manual self-calibration, temperature uctuations after performing calibration must be within ±2°C, and the calibration interval must be within 30 min.

Measurement accuracy

RM35 44RM35 45

t0 : Reference temperature. [ºC]

t : Ambient temperature. [ºC]

t : Temperature. measurement

accuracy

t0 : Temperature. coefficient at t0 is

[1/ºC]

-α

t0 × (t+

t- t0)

×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

Reso-

lution

Accuracy %rdg. + %f.s.

Measurement

current

Additional

accuracy

without

0ADJ

%f.s.

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

(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

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

Reso-

lution

Accuracy %rdg. + %f.s.

Measurement

current

Additional

accuracy

without

0ADJ

%f.s.

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

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.)