YOKOGAWA MuR10000, Manual

Page: 257 / 272

12-21
IM 04P01B01-01E
Specifications
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App
Index
Item Specifications
Measuring accuracy and recording accuracy in case of square root computation
A: Voltage measurement accuracy (digits)
B: Voltage span (digits)
C: Scaling span (digits, upper limit of scaling – lower limit of scaling)
Input Range Computed Value Accuracy Equation (Digits),
Rounded up to the decimal place
Recording Accuracy
0% or more, less than 1.5%
*
±(0.1 × C + 2) Left value + 0.3% of
recording span
1.5% or more, less than 6.25% ±(A / B × C × 5 + 2)
6.25% or more, less than 25% ±(A / B × C × 2 + 2)
25% or more, 100% or less ±(A / B × C + 2)
* 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)
Reference junction compensation
Internal/External selectable for each channel
Reference junction compensation accuracy
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
Maximum input voltage ±10 VDC (continuous) for ranges of 200 mV or less, TC, RTD, and DI ranges
±60 VDC (continuous) for 2 VDC or higher ranges
Input resistance Approximately 10 MΩ or more for ranges of 200 mV or less and TC
Approximately 1 MΩ for 2 VDC or higher ranges
Input source resistance Volt, TC: 2 kΩ or less
RTD input: 10 Ω or less per wire (The resistance of all three wires must be equal).
Bias current 10 nA or less (except when burnout detection function is enabled)
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 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): Filter time constant is 2 s, 5 s, or 10 s
Moving average (dot model): The number of samples is 2 to 16.
12.6 General Specifications