7
WIKA operating instructions EMM Calibration Sled
PN 0019408001A 08/2018 EN
EN
Figure 3.9 A - 5 points selected
Figure 3.9 B - Reading upscale and downscale
Figure 3.9 C - Reference and reading upscale and downscale
⇒
Note: At any point these processes can be aborted and the Factory Restore button can be selected. This will revert the
calibration back to the factory settings.
2.2 Use of multiple calibration methods
⇒
Note: All entries should be followed by a carriage return for values to be accepted.
Zero or Span buttons:
■
Zero can be used to force an offset in the value shown by entering a value in the same units for example °C.
⇒
THE ZERO BUTTON SHOULD BE USED FOR SINGLE POINT CALIBRATIONS.
■
Span can be used to change the slope. This value is nominally 1. This is a multiplier such that 1 would not change the current slope. A
value of 0.9 would multiply the current slope by 0.9 or 90%. The Zero and Span window is shown in Figure 4.
Figure 2.6 - Zero and Span window
2-pt cal:
Use of the 2-pt Cal button requires the capability to apply two discrete calibration stimuli to the individual sensors.
A reference value near the zero point of the sensor should be entered. When the Enter button is selected the application will read
the sensor’s value and automatically make the correction. The same applies to the next point. It is important that the reference
stimulus be close to the “Apply” value shown. The 2-pt Cal windows are shown below.
Figure 2.7 A - Displays for both temperatures sensors
Figure 2.7 B - Displays for both barometric pressure sensors
Figure 2.7 C - Displays for both relative humidity sensors
