MR8740T_Quick guide_eng_20191016H.pdf - 第137页
131 Specications of the Options Effect of radiated radio-frequency electromagnetic eld ±0.1% f.s. (max.) at 3 V/m (in the 1 V f.s. range) Effect of conducted radio-frequency electromagnetic eld ±0.1% f.s. (max.) at 3 …
130
Specications of the Options
Model U8991 Digital Voltmeter Unit
Conditions of
guaranteed accuracy
Specied under the following conditions: operated at 23°C±5°C (73°F±9°F) and 80% RH
or less after a half-hour (at least) warm-up (when installed in a Memory HiCorder)
Operating
environment
Indoors, Pollution Degree 2, Operating altitude: up to 2000 m (6562 ft.)
Operating
temperature and
humidity
Temperature: 0°C to 40°C (32°F to 104°F)
Humidity: 80% RH or less (no condensation)
Storage temperature
and humidity
Temperature: −10°C to 50°C (14°F to 122°F)
Humidity: 80% RH or less (no condensation)
Standards Safety: EN 61010
EMC: EN 61326 Class A
Dimensions Approx. 106W ×19.8H × 196.5D mm (4.17″W × 0.78″H × 7.74″D)
Mass Approx. 250 g (8.8 oz.)
Product warranty
period
3 years
Measurement item DC voltage
Measurement range
Measurement range Effective input
range*
Resolution Input resistance
1 V f.s. −1.2 V to 1.2 V 1 µV
100 M
Ω
or more
10 V f.s. −12 V to 12 V 10 µV
100 V f.s. −100 V to 100 V 100 µV 10 M
Ω
±1%
*: Guaranteed range of measurement accuracy
Maximum input
voltage
100 V DC
Maximum rated
voltage to earth
100 V AC, DC (between each input channel and enclosure, between any two of input
channels)
Without a measurement category rating, anticipated transient overvoltage: 500 V
Measurement
method
Delta-sigma modulation method
Measurement
terminal
Insulated BNC terminal
Number of channels 4 channels
Input type Unbalanced input (oating)
Integration time 20 ms × NPLC (power frequency: 50 Hz), 16.67 ms × NPLC (power frequency: 60 Hz)
(NPLC can be chosen from among 1, 10, and 100)
High-speed
response
The high-speed response can be switched between on and off.
Guaranteed accuracy
period
1 year
Guaranteed
accuracy period after
adjustment made by
Hioki
1 year
Measurement
accuracy
±0.02% rdg. ±0.0025% f.s.
Temperature
characteristics
(±0.002% rdg.±0.00025% f.s.)/°C
131
Specications of the Options
Effect of radiated
radio-frequency
electromagnetic eld
±0.1% f.s. (max.) at 3 V/m (in the 1 V f.s. range)
Effect of conducted
radio-frequency
electromagnetic eld
±0.1% f.s. (max.) at 3 V (in the 1 V f.s. range)
Common-mode
rejection ratio
100 dB or more (at 50 Hz / 60 Hz, a signal source resistance of 100
Ω
)
5
Specications
132
Specications of the Options
Model MR8790 Waveform Generator Unit
Conditions of
guaranteed accuracy
Specied under the following conditions: operated at 23°C±5°C (73°F±9°F) and 80% RH
or less after a half-hour (at least) warm-up (when installed in a Memory HiCorder)
Product warranty
period
3 years
Guaranteed accuracy
period
1 year
Guaranteed
accuracy period after
adjustment made by
Hioki
1 year
Number of output
channels
4 channels (isolated between enclosure and output, and between every channel)
Self-diagnosis
function
Available (with the voltage and current monitors)
Switchable between
the voltage and
current monitors
Resolution: 5 µA (current monitor), 10 mV (voltage monitor)
Monitor accuracy: ±3.0% f.s. (f.s. = 10 V: voltage monitor, f.s. = 5 mA: current monitor)
Maximum output
current
±5 mA
Allowable load
resistance
2 k
Ω
or more
Output terminal SMB terminal
Output conguration Waveform output / open / short-circuit
Output relay
switching time
5 ms or less
Output protection The output current is limited to 40 mA (when the output terminals are are connected with
each other)
Maximum rated
voltage to earth
33 V rms AC or 70 V DC (between each output channel and enclosure, between any two
of output channels)
Anticipated transient overvoltage: 330 V
Withstanding voltage 350 V AC (sensitivity current: 1 mA) (between each output channel and enclosure,
between any two of output channels)
Operating
temperature and
humidity
Consistent with the specications of Memory HiCorder in which Model MR8790 is installed.
Operating
environment
Consistent with the specications of Memory HiCorder in which Model MR8790 is installed.
Storage temperature
and humidity
−20°C to 50°C (−4°F to 122°F), 90% RH or less (no condensation)
Dimensions Approx. 106W × 19.8H × 196.5D mm (4.17″W × 0.78″H × 7.74″D) (excluding protrusions)
Mass Approx. 230 g (8.1 oz.)
Standards Safety: EN61010
EMC: EN61326 Class A
Effect of radiated
radio-frequency
electromagnetic eld
±3% f.s. (max.) at 3 V/m (f.s. = 10 V)
Effect of conducted
radio-frequency
electromagnetic eld
±1% f.s. (max.) at 3 V (f.s. = 10 V)