MR8740T_Quick guide_eng_20191016H.pdf - 第132页
126 Specications of the Options Guaranteed accuracy period after adjustment made by Hioki 1 year Measurement accuracy ±0.3% f.s. (with the lter set at 5 Hz) T emperature characteristics ±0.045% f.s./°C Effect of radiat…
125
Specications of the Options
Model U8978 4CH Analog Unit (The rmware of ver. 2.00 or later is
required to install the module.)
Conditions of guaranteed accuracy
Specied under the following conditions: installed in a Memory HiCorder and operated at 23°C±5°C (73°F±9°F) and
80% RH or less after a half-hour (at least) warm-up and execution of zero-adjustment.
Operating
environment
Indoors, Pollution Degree 2, Operating altitude: up to 2000 m (6562 ft.)
Operating
temperature and
humidity
0°C to 40°C (32°F to 104°F), 80% RH or less (no condensation)
Storage temperature
and humidity
−10°C to 50°C (14°F to 122°F)
For −10°C or higher but lower than 40°C (14°F or higher but lower than 104°F), 80% RH
or less (no condensation)
For 40°C or higher but lower than 45°C (104°F or higher but lower than 113°F), 60% RH or
less (no condensation)
For 45°C to 50°C (113°F to 122°F), 50% RH or less (no condensation)
Standards Safety: Model EN61010
EMC: EN61326 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 range 100, 200, 400 mV f.s., 1, 2, 4, 10, 20, 40 V f.s.
Maximum input
voltage
(Direct input) 40 V DC
(In combination with Model 9665) 400 V DC
Maximum rated
voltage to earth
(Direct input)
30 V AC, 60 V DC (between each input channel and the enclosure, between any two of
input channels)
(In combination with Model 9665)
300 V AC, DC, Measurement category II (between each input channel and the enclosure,
between any two of input channels)
Measurement
terminal
Insulated BNC terminal
Number of channels 4 channels
Frequency
characteristics
DC to 2 MHz, −3 dB
Noise 500 μV p-p (typ.), 1 mV p-p (max.) (with the highest sensitivity range and the terminals of
each input connector connected with each other)
Input type Unbalanced input (oating)
Input coupling DC/GND
Input resistance 1 M
Ω
±1%
Input capacitance 30 pF ±10 pF (at 100 kHz)
A/D resolution 16 bits (± f.s. = ±32000 data points)
Maximum sampling
rate
5 MS/s
Guaranteed accuracy
period
1 year
5
Specications
126
Specications of the Options
Guaranteed
accuracy period after
adjustment made by
Hioki
1 year
Measurement
accuracy
±0.3% f.s. (with the lter set at 5 Hz)
Temperature
characteristics
±0.045% f.s./°C
Effect of radiated
radio-frequency
electromagnetic eld
±5% f.s. (max.) at 3 V/m (with the lter set at 5 Hz)
Effect of conducted
radio-frequency
electromagnetic eld
±5% f.s. (max.) at 3 V (in the 10 V range, with the lter set at 5 Hz and 1 V DC inputted)
Common-mode
rejection ratio
80 dB or more (at 50 Hz / 60 Hz, a signal source resistance of 100
Ω
)
Low-pass lter Off, 5 ±50%, 500 ±50%, 5 k ±50%, 200 k ±50% (Hz); −3 dB
127
Specications of the Options
Model U8979 Charge Unit (The rmware of ver. 2.00 or later is required
to install the module.)
1. General specications
Operating
environment
Indoors, Pollution Degree 2, Operating altitude: up to 2000 m (6562 ft.)
Operating
temperature and
humidity
0°C to 40°C (32°F to 104°F), 80% RH or less (no condensation)
Storage temperature
and humidity
−10°C to 50°C (14°F to 122°F)
For −10°C or higher but lower than 40°C (14°F or higher but lower than 104°F), 80% RH
or less (no condensation)
For 40°C or higher but lower than 45°C (104°F or higher but lower than 113°F), 60% RH or
less (no condensation)
For 45°C to 50°C (113°F to 122°F), 50% RH or less (no condensation)
Standards Safety: EN61010
EMC: EN61326 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
Guaranteed accuracy
period
1 year
2. Specications of input, output, and measurement
-1. Common specications
Number of channels 2 channels
Measurement mode Charge, pre-amplier, voltage (selectable for each channel)
Input type Unbalanced input (oating)
In each channel, the voltage input terminal has the same-potential ground as the charge
input terminal.
Common-mode
rejection ratio
80 dB or more (at 50 Hz / 60 Hz, a signal source resistance of 100
Ω
)
Anti-aliasing lters Cutoff frequency (fc)
20, 40, 80, 200, 400, 800, 2 k, 4 k, 8 k, 20 k, 40 k (Hz)
Switchable between on and off; the instrument automatically chooses a cutoff frequency
along with the sampling rate.
Attenuation property: −66 dB or higher at a cutoff frequency of 1.5 × fc
Maximum sampling
rate
200 kS/s
A/D resolution 16 bits (± f.s. = ±25,000 data points)
Maximum rated
voltage to earth
30 V AC, 60 V DC
(between each input channel and the enclosure, between any two of input channels)
Anticipated transient overvoltage: 330 V
-2. Voltage input
Measurement range 10, 20, 40, 100, 200, 400 mV f.s., 1, 2, 4, 10, 20, 40 V f.s.
5
Specications