Baker Hughes Panametrics Sentinel LCT8, User Manual

Page: 80 / 138

IMPORTANT
Make sure the ammeter used is properly calibrated.
1. Refer to Primary pages on page 26 and navigate to
page 7: CAL .
2. Connect an ammeter to the Sentinel LCT8 analog output
terminals.
3. With 4-20 loop highlighted, press the [

] key twice to
confirm your choice.
4. With mode highlighted, press the [

] key to confirm your
choice.
5. Choose one of the following options:
• Use the [

] and [

] keys to highlight normal and press
the [

] key twice to confirm your selection and return
to the previous screen. After completing an analog
input calibration, the mode should always be reset to
normal using this step.
• Use the [

] and [

] keys to highlight test (trim) and
press the [

] key twice to confirm your selection and
proceed to the next screen. Continue to the next step.
6. Use the [

] and [

] keys to highlight base trim and press
the [

] key to confirm your selection and proceed to the
next screen.
a. If the
base trim value is not 4 mA, set it to 4 mA.
b. Enter the value read on the ammeter into the base
trim screen.
c. Verify that the ammeter now reads 4 mA ±0.02 mA.
If necessary, repeat these steps until the reading is
correct. Then, press the [

] key to save the value and
return to the previous screen, or press the [

] key to
cancel the trim and return to the previous screen.
7. Use the [

] and [

] keys to highlight span trim and press
the [

] key to confirm your selection and proceed to the
next screen.
a. If the
span trim value is not 20 mA, set it to 20 mA.
b. Enter the value read on the ammeter into the span
trim screen.
c. Verify that the ammeter now reads 20 mA ±0.02 mA.
If necessary, repeat these steps until the reading is
correct. Then, press the [

] key to save the value and
return to the previous screen, or press the [

] key to
cancel the trim and return to the previous screen.
8. Use the [

] and [

] keys to highlight percent and press
the [

] key to confirm your selection. If the value is not
already at 100%, set it to 100%. Then, press the [

] key to
save the value and return to the previous screen, or press
the [

] key to cancel and return to the previous screen.
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