YOKOGAWA MuR10000 - Calibrating the Recorder

IM 04P01B01-01E
11-4
11.4 Calibrating the Recorder
Calibrate the measured value against the input.
It is recommended that the recorder be calibrated once a year to assure its measurement
accuracy.
For details regarding calibration, contact your nearest YOKOGAWA dealer.
Required Instruments
A calibration instrument with appropriate resolution is required for calibrating the recorder.
Recommended Instrument
• DC voltage standard: Model 9100 by FLUKE or equivalent
Main Specifications
Output accuracy: ±(0.005% + 1 µV)
• Decade resistance box: Yokogawa Meters & Instruments Model 2793-01 or equivalent
Main Specifications
 Accuracyofoutputrange0.1to500Ω:±(0.01%+2mΩ)
 Resolution:0.001Ω
• 0°C standard temperature device: ZC-114/ZA-10 by Coper Electronics or equivalent
Main Specifications
Standard temperature stability accuracy: ±0.05°C
For information on purchasing the calibration instruments, contact your nearest
YOKOGAWA dealer.
Calibration Procedure
1.
Wire the recorder and the calibration instrument as shown in the following figure,
and adequately warm up the instruments (the warm-up time of the recorder is at
least 30 minutes).
2.
Check that the operating environment such as ambient temperature and humidity
is within the normal operating conditions (see section 12.6).
3.
Apply appropriate input signals corresponding to 0%, 50%, and 100% of the input
range and calculate the errors from the readings.
Iftheerrorisoutsidetheaccuracyspecications,contactyournearestYOKOGA-
WA dealer.
Note
For thermocouple inputs, you must measure the temperature of the input terminal and apply a
voltage taking into account the reference junction temperature.
DC Voltage Measurement
DC voltage standard
+
–
Input terminals
+–