Yamatake SDC35, User Manual

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Cautions before starting the calibration
When calibrating the unit, strictly observe the following cautions. Failure to do so
may cause inaccuracy:
• Before starting the calibration, supply the power to this unit for at least 1 hr.
• The ambient temperature of the calibration place must conform to the standard
conditions specified in the unit specifications.
• Do not calibrate the unit in a place where it is in contact with the wind or during
ambient temperature fluctuation.
• Do not calibrate the unit with the measuring instruments having lower
specifications stated in the next section,
■
Measuring instruments required for
calibration
.
■
Measuring instruments required for calibration
■
Calibration procedures
●
I/O check
(1) Select the
[I/O Check]
tab.
(2) Select a desired item from the check contents.
(3) Click
[Execute]
.
The input system (key and digital input) is shown on the personal computer screen
while the input status (ON/OFF) of this unit is being read continuously.
For the output system (control output and event output), the status (ON/OFF) you
have checked on desired check boxes is output from the output terminal of this
unit.
●
PV input calibration
(1) Select the
[PV Calibration]
tab.
(2) Select the model, [4: C25/26/35/36 T/C], [5: C25/26/35/36 RTD], or [6:
C25/26/35/36 LIN].
(3) Select the gain No. in the ascending order and perform the operation from step
(4).
(4) Click [Read] .
(5) Apply the voltage, current, and resistance values written next to the gain No. to
the PV input terminal.
11-2
Chapter 11. CALIBRATION
Measuring instrument Specifications
Reference current/ Accuracy: ±0.1% or less,
voltage generator Minimum resolution: 100 µV or less (voltage),
Minimum resolution: 100 µA or less (current)
Resistor Accuracy: ±0.1% or less,
Minimum resolution: 0.1
Ω
or less
Ammeter Accuracy: ±0.1% or less,
Minimum resolution: 1µA or less
Voltmeter Accuracy: ±0.1% or less,
Minimum resolution: 1mV or less
Thermometer Accuracy: ±0.1˚C or less,
Minimum resolution: 0.1˚C or less