![background image](http://html1.mh-extra.com/html/ge/aquatrans-at868/aquatrans-at868_abridged-manual_4125785053.webp)
September 2004
4-2
Calibration
Calibration (cont.)
To calibrate the analog outputs, complete the following steps:
Accessing the Calibration
Menu
1.
Press
[ESC]
,
[ENTER]
,
[ESC]
in sequence to enter the
user program
.
2.
Press [
X
] until
CALIB
appears and press
[ENTER]
.
3.
Press [
X
] until
SLOT0
appears and press
[ENTER]
.
4.
Press [
X
] until
A
or
C
appears and press
[ENTER]
.
Calibrating the Low Point
1.
Press [
X
] to select
4 mA
and press [
ENTER
].
2.
Press [
X
] to select
UP
or
DOWN
to adjust the reading until the
ammeter reads exactly 4 mA. Press [
ENTER
].
3.
When the desired reading is achieved, select
STORE
. If the
ammeter reading cannot be adjusted with ±5.0
μ
A of the 4 mA
setting, select
ABORT
to end the calibration and contact GE for
assistance.
Calibrating the High Point
1.
Press [
X
] to select
20 mA
and press [
ENTER
].
2.
Press [
X
] to select
UP
or
DOWN
to adjust the reading until the
ammeter reads exactly 20 mA. Press [
ENTER
].
3.
When the desired reading is achieved, select
STORE
. If the
ammeter reading cannot be adjusted with ±5.0
μ
A of the 20 mA
setting, select
ABORT
to end the calibration and contact GE for
assistance.
Testing Linearity
To test the linearity of the analog outputs, complete the following
steps:
1.
Press
[ESC]
,
[ENTER]
,
[ESC]
in sequence to enter the
user program
.
2.
Press [
X
] until
CALIB
appears and press
[ENTER]
.
3.
Press [
X
] until
SLOT0
appears and press
[ENTER]
.
4.
Press [
X
] until
A
or
C
appears and press
[ENTER]
.
5.
Press [
X
] to select
Test
and press
[ENTER]
.
Summary of Contents for AquaTrans AT868
Page 7: ...Chapter 1...
Page 25: ...Chapter 2...
Page 45: ...Chapter 3...
Page 50: ...Chapter 4...
Page 56: ...Appendix A...
Page 62: ...Appendix B...
Page 63: ...Measuring P and L Dimensions Measuring P and L B 1...