YOKOGAWA MuR10000 Manual page 257

Item
Measuring accuracy and recording accuracy in case of square root computation
Reference junction compensation
Reference junction compensation accuracy
Maximum input voltage
Input resistance
Input source resistance
Bias current
Common mode rejection ratio 120 dB (50/60 Hz ± 0.1%, 500 Ω unbalanced, between the minus terminal and ground)
Normal mode rejection ratio 40 dB or more (50/60 Hz ± 0.1%)
Noise rejection
IM 04P01B01-01E
Specifications
A: Voltage measurement accuracy (digits)
B: Voltage span (digits)
C: Scaling span (digits, upper limit of scaling – lower limit of scaling)
Input Range
*
0% or more, less than 1.5%
1.5% or more, less than 6.25% ±(A / B × C × 5 + 2)
6.25% or more, less than 25%
25% or more, 100% or less
* Includes case when:
(input voltage – lower limit of the specified voltage range) / used range × 20000 < 256.
If the specified range is, for example, 1–5 V, the lower limit of the specified voltage range is 1.
Use a measurement range that is as close to the measurement span as possible.
Example: Assuming that
• range type: 6 V
• measuring span: 1.000 to 5.000 V
• scaling span: 0.000 to 2.000 Then,
A = A calculated value shown below
B = 5.000 V - 1.000 V = 4.000 V (4000 digits)
C = 2.000 – 0.000 = 2.000 (2000 digits)
<Measuring accuracy>
(1) When the input is 1.24 V (6% input)
A = ± ( 0.1% × 1.240 V + 2 digits ) = ±( 0.00124 V(2 digits) + 2 digits ) = ±4 digits
Measuring accuracy = ± ( 4/4000 × 2000 × 5+2) = ±12 digits
(2) When the input is 5 V (100% input)
A = ± ( 0.1% × 5.000 V + 2 digits ) =±( 0.005 V(5 digits) + 2 digits ) = ±7 digits
Measuring accuracy = ± ( 7/4000 × 2000+2 )= ±5.5 = ±6 digits (rounded up)
<Recording accuracy>
Measuring accuracy± 0.3 mm (0.3% of 100 mm)
Internal/External selectable for each channel
Above 0°C with input terminal temperature balanced (60 minutes after power on)
Type R, S, B, W, WRe: ±1.0°C
Type K, J, E, T, N, L, U: ±0.5°C
±10 VDC (continuous) for ranges of 200 mV or less, TC, RTD, and DI ranges
±60 VDC (continuous) for 2 VDC or higher ranges
Approximately 10 MΩ or more for ranges of 200 mV or less and TC
Approximately 1 MΩ for 2 VDC or higher ranges
Volt, TC: 2 kΩ or less
RTD input: 10 Ω or less per wire (The resistance of all three wires must be equal).
10 nA or less (except when burnout detection function is enabled)
By the integrating A/D converter: The integration time is 16.7 ms, 20 ms, or 100 ms (dot model)
Low-pass filtering (pen model):
Moving average (dot model):
Computed Value Accuracy Equation (Digits),
Rounded up to the decimal place
±(0.1 × C + 2)
±(A / B × C × 2 + 2)
±(A / B × C + 2)
Filter time constant is 2 s, 5 s, or 10 s
The number of samples is 2 to 16.
12.6 General Specifications
Recording Accuracy
Left value + 0.3% of
recording span
12-21
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App
Index