MR8740T_Quick guide_eng_20191016H.pdf - 第145页

139 Specications of the Options Output accuracy DC voltage 5 V range ±0.035% of setting ± 800 µV T emperature coefcient Add the following value when operating the instrument in temperature ranges of 0°C to 18°C and of …

138

Specications of the Options

Measurable range DC voltage 5 V range −0.200 00 V to +5.500 00 V

0.5 V range

(for resistance

output function

only)

−0.200 000 V to +0.500 000 V

DC current 5 mA range −5.500 00 mA to +5.500 00 mA

(Fixed at 5 mA range for voltage output function)

1 mA range −1.000 000 mA to +1.000 000 mA

250 µA range −250.000. 00 µA to +250.000 µA

50 µA range −50.000. 0 µA to +50.000. 0 µA

AC voltage 5.500 0 mA p-p (xed at 5 mA range)

Measurement

method

Delta-sigma method

Integration

time of voltage

measurement

and current

measurement

1 PLC (20 ms for a power frequency of 50 Hz, 16.67 ms for a power frequency of 60 Hz)

Number of channels 8 channels (isolated between any two of channels)

Output terminal D-sub 25 pin

Maximum rated

voltage to earth

25 V

Anticipated transient overvoltage: 25 V

Conditions of

guaranteed accuracy

Guaranteed accuracy period: 1 year

Guaranteed accuracy period after adjustment made by Hioki: 1 year

Temperature and humidity for guaranteed accuracy: 23°C ±5°C (73°F ±9°F), 80% RH or

less

Warm-up time: 30 minutes or more

*When outputting a resistance

• The product of the set resistance value and output current is 30 mV or more.

• The response coefcient of the resistance generation stands at 0.0002.

139

Specications of the Options

Output accuracy

DC voltage 5 V range ±0.035% of setting ± 800 µV

Temperature

coefcient

Add the following value when operating the instrument

in temperature ranges of 0°C to 18°C and of 28°C to

40°C.

[0.1 × (output accuracy)] /°C

Output resistance 100 m

or less

Overshoot When an output changes from 0% to 100% of a setting

value

Less than 5% (reference value with resistance load)

Output settling time Time an output signal takes to settle within 0.1% of the

range value when the signal changes from 0% to 100%

of the range

5 ms (reference value with no load)

DC current 5 mA range ±0.050% of setting ± 4.0 µA

Temperature

coefcient

Add the following value when operating

the instrument in temperature ranges of

0°C to 18°C and of 28°C to 40°C.

[0.1 × (output accuracy)] /°C

1 mA range ±0.050% of setting ± 800 nA

Temperature

coefcient

Add the following value when operating

the instrument in temperature ranges of

0°C to 18°C and of 28°C to 40°C.

[0.1 × (output accuracy)] /°C

250 µA range ±0.050% of setting ± 200 nA

Temperature

coefcient

Add the following value when operating

the instrument in temperature ranges of

0°C to 18°C and of 28°C to 40°C.

[0.1 × (output accuracy)] /°C

50 µA range ±0.050% of setting ± 40 nA

Temperature

coefcient

Add the following value when operating

the instrument in temperature ranges of

0°C to 18°C and of 28°C to 40°C.

[0.1 × (output accuracy)] /°C

Overshoot When an output changes from 0% to 100% of a setting

value

Less than 5% (reference value with resistance load)

Output settling time Time an output signal takes to settle within 0.1% of the

range value when the signal changes from 0% to 100%

of the range

5 ms (reference value with short-circuited load)

Resistance Current generation

range

Voltage measurement 0.5 V range Voltage measurement 5 V range

Percent of output

Floor [

]

Percent of output

Floor [

]

5 mA range

0.09 + 0.4000 /

0.10 /

+ 0.1 0.09 + 0.0040 /

0.70 /

+ 0.1

1 mA range

0.09 + 0.0800 /

0.10 /

+ 0.1 0.09 + 0.0800 /

0.70 /

250 µA range

0.09 + 0.0200 /

0.10 /

0.09 + 0.0200 /

0.70 /

50 µA range

0.09 + 0.0040 /

0.10 /

0.09 + 0.0040 /

0.70 /

Current values

are represented in milliamperes.

Output settling time Time an output signal takes to settle within 200% of

the accuracy specication centered on the nal value

(A setting resistance and an output resistance of a

connected object are in a ratio 1:1, with no capacitive

load)

When connected-object presumption is not performed:

1.5 s or less (response coefcient of resistance

generation: 0.0002)

When connected-object presumption is performed: 100

ms or less

Specications

140

Specications of the Options

Measurement

accuracy

voltage

5 V range ±0.030 % of rdg. ± 700 µV

Temperature

coefcient

Add the following value when operating the

instrument in temperature ranges of 0°C to 18°C

and of 28°C to 40°C

[0.05 × (measurement accuracy)] /°C

5 V range

(for resistance

output function

only)

±0.030 % of rdg. ± 100 µV

Temperature

coefcient

Add the following value when operating the

instrument in temperature ranges of 0°C to 18°C

and of 28°C to 40°C

[0.05 × (measurement accuracy)] /°C

current

5 mA range ±0.040 % of rdg. ± 900 nA

Temperature

coefcient

Add the following value when operating the

instrument in temperature ranges of 0°C to 18°C

and of 28°C to 40°C

[0.05 × (measurement accuracy)] /°C

1 mA range ±0.040 % of rdg. ± 180 nA

Temperature

coefcient

Add the following value when operating the

instrument in temperature ranges of 0°C to 18°C

and of 28°C to 40°C

[0.05 × (measurement accuracy)] /°C

250 µA range ±0.040 % of rdg. ± 45 nA

Temperature

coefcient

Add the following value when operating the

instrument in temperature ranges of 0°C to 18°C

and of 28°C to 40°C

[0.05 × (measurement accuracy)] /°C

50 µA range ±0.040 % of rdg. ± 10 nA

Temperature

coefcient

Add the following value when operating the

instrument in temperature ranges of 0°C to 18°C

and of 28°C to 40°C

[0.05 × (measurement accuracy)] /°C

Effect of radiated

radio-frequency

electromagnetic eld

1% f.s. (Max.) at 3 V/m (for DC voltage output function)

Effect of conducted

radio-frequency

electromagnetic eld

1% f.s. (Max.) at 3 V (for DC voltage output function)

No accuracy is specied for AC voltage output and AC current measurement.