RelayDoc User Manual
Page 25
Version 1.25
Filename: RelayDoc User Manual v1.25.docx
© MRD Rail Technologies Pty Ltd
14Sep2017
COMMERCIAL IN CONFIDENCE ©2016 MRD RAIL TECHNOLOGIES PTY LTD WWW.MRD.COM.AU +61 7 3821 5151
C
ALIBRATION
Caution: RelayDoc Calibration requires the use of a certified Calibration Kit. The Calibration Kit
resistor values must be transposed to the Web Server Calibration tabs before RelayDoc calibration is
attempted. Failure to update the resistor values will result in a loss of traceability, and reduction in
testing confidence.
9.9.1
Contact Resistance
Double click a row to adjust the value. Calibration points include:
•
Theoretic value (fixed)
•
Practical value (the measured value of the calibration tool kit)
Contact resistance calibration points are:
0R (0Ω)
; 1R (1
Ω)
; 4.7R (
4.7Ω)
;
22R (22
Ω)
; 47R (47
Ω)
; 270R (270
Ω)
; 470R (470
Ω)
.
9.9.2
Coil Resistance
Double click a row to adjust the value. Calibration point includes:
•
Theoretic value (fixed)
•
Practical value (the measured value of the calibration tool kit)
Coil resistance calibration points are: 0R (0
Ω)
; 270R
(270 Ω)
; 470R
(470
Ω)
; 1K (1000
Ω
); 2K7 (2700
Ω
); 4K7 (4700
Ω
); 9K1 (9100
Ω
)
9.9.3
Voltage
Up to four Voltage calibration points are typically set to cover from zero
to the normal operating voltage of the Relays being tested. The spread
should be equal, or at commonly used voltages.
A typical voltage setup is shown right: The maximum anticipated Voltage
is 50V, and 5, 12, 24V are common operating voltages.
Maximum allowable voltages
RelayDoc
50V
RelayDoc HV
130V
9.9.4
Current
Current calibration points are typically set to cover from zero to the
normal operating current of the Relays being tested. The spread should
be equal, or at commonly used currents. For example, if the maximum
expected current is 1A, the spread might be set at 200mA; 400mA;
600mA; 800mA and 1000mA.
9.9.5
Calibration Report
This tab lists the Calibration Reports stored on the RelayDoc. This is the
complete calibration history since new.