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Example:
To setup Channel 1 as a model 4000 VW Strain Gage with a Zero Reading of 490
digits, a Gage Factor of –0.0015 and a Gage Offset of 0, enter:
G1/L/3/490/-0.0015/0
<ENTER>
The LC-2x16 will return:
CH 1: ENABLED
GT: 3 ZR: 490.0000 GF: -0.00150 GO: 0.00000
*Note
: If selecting Gage Type 0 to disable the channel, the LC-2x16 will only return ‘*’. Use the
MXS
command (Section 3.18) to view the disabled channels.
When using linear conversion (L) of the instrument reading, the G command is used to select the
gage type and enter the gage zero reading, gage factor, and gage offset.
Linear Conversion is described further as follows:
szzzzzz
represents the zero reading for the transducer being read,
sffffff
represents the multiplier
(calibration or gage factor) that will be applied to the reading to convert to engineering units and
soooooo
is the offset that will be applied to the gage reading. The zero reading, gage factor and
offset can be entered with a sign and decimal point. The maximum number of digits, including
sign and decimal point is 15. The entered value will display to a maximum of five places to the
right of the decimal point.
For vibrating wire instruments (Gage Types 1-6), manufactured after November 2, 2011 and for
all dataloggers (8002-16-X) with a firmware revision of 3.1.X and up, the basic formula for
calculation of displayed and stored values is as follows;
Display
((CurrentReading - ZeroReading)
Multiplier) + Offset
Equation 1 - Displayed Gage Reading using Linear Conversion
NOTE: In Equation 1 (above), the “
CurrentReading
” is frequently referred to as
R1
while
the “
ZeroReading
” is referred to as
R0
NOTE:
It is possible that a new datalogger might be used with an older sensor or vice versa and because
of equation differences the output might be negative. As of LogView version V2.1.1.X, an additional
sensor configuration parameter is now required, allowing LogView to compensate for old versus new
sensor/datalogger combinations. This new parameter:
Output Calculation
, determines whether the
sensor was calibrated using the formula:
G x (R0 – R1)
or
G x (R1 – R0).
As with the gage factor, this
information is available from the calibration certificate supplied with each sensor. Please see the
LogView User’s Guide or the online help section, “Sensor Settings” available while running LogView.
Содержание LC-2x16
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