Yokogawa Standalone MW100 - Manual (Page 207)

4-15 IM MW100-01E
Troubleshooting and Maintenance
1
2
3
4
5
App
Index
• When calibrating the RTD or resistance range of the 6-CH, Medium-Speed Four-Wire
RTD Resistance Input module
Short the input terminal
of CH3 (connect 0 Ω)
When calibrating the RTD (1 mA)
20 mV range, connect 20 Ω to the
input terminal of CH4.*
* When calibrating the RTD (1 mA) 60 mV range, connect 60 Ω to the input terminal of CH5.
When calibrating the RTD (1 mA) 200 mV range, connect 200 Ω to the input terminal of CH6.
When calibrating the RTD (1 mA) 600 mV range, connect 300 Ω to the input terminal of CH4.
When calibrating the RTD (0.25 mA) 600 mV range, connect 2400 Ω to the input terminal of CH5.
When calibrating the RTD (0.25 mA) 1 V range, connect 3000 Ω to the input terminal of CH6.
Resistance standard
C
A
I
C
A
B
I
B
• When calibrating the range of the 4-CH, Medium-Speed Strain Module (-B12, -B35,
and -NDI)
The clamp terminals (-B12, -B35) and NDIS terminal (-NDI) are connected using the
4-gauge method (see below or next page). Use a resistance of 120 Ω for resistors R1
through R3, and connect a resistance to R4 equivalent to the Zero or Full value.
To correctly calibrate the range, do so in the order Zero, then Full.
Measurement Range
to Be Calibrated
Registors R1,
R2, and R3
Registor R4 Resistance value
accuracy ZERO FULL
ZERO 120.000 Ω 120.000 Ω 120.000 Ω ±0.005%, ±0.3 ppm/°C
2000 µSTR (strain) 120.000 Ω 120.000 Ω 117.154 Ω ±0.005%, ±0.3 ppm/°C
20000 µSTR (strain) 120.000 Ω 120.000 Ω 113.010 Ω ±0.005%, ±0.3 ppm/°C
200000 µSTR (strain) 120.000 Ω 120.000 Ω 80,000 Ω ±0.005%, ±0.3 ppm/°C
* The Full calibration value of the 2000 µStrain range is equivalent to 12000 µStrain.
The Full calibration value of the 20000 µStrain range is equivalent to 30000 µStrain.
The Full calibration value of the 200000 µStrain range is equivalent to 200000 µStrain.
Setting switch (CH1 to CH4)
ON OFF
No.1
No.2
No.3
No.4
No.5
For -B12, -B35
No.1
OFF
No.2
OFF
No.3
OFF
No.4
OFF
No.5
ON
Connect CH2
only
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
A(+)
B(L)
C(-V)
D(H)
R2
R4
R3
R1
4.4 Calibration