Fisher 8800A Automobile Parts User Manual


 
Section
9-1
9 Electronics Verification
Electronics verification of the Model 8800C can be done by either
utilizing the internal signal simulation capability or by applying an
external signal source to the “TEST FREQ IN” and “GND” pins.
NOTE
It is not recommended to perform electronics verification while the process
is running. If both operations are performed simultaneously, the effect of
dual input frequencies may cause error in the electronics verification.
Using a F
OUNDATION fieldbus-compliant host, such as the DeltaV System
with AMSinside, the sensor can be disconnected from the electronics before
you begin. The sensor may also be manually disconnected from the
electronics as described in “Install the Foundation Fieldbus Electronics
Housing” on page 6-11.
SAFETY MESSAGES
Instructions and procedures in this section may require special precautions
to ensure the safety of the personnel performing the operations. Please
refer to the following safety messages before performing any operation in
this section.
Explosions could result in death or serious injury:
Do not remove the transmitter cover in explosive atmospheres when the circuit is live.
Before connecting a F
OUNDATION fieldbus-compliant host in an explosive atmosphere,
make sure the instruments in the loop are installed in accordance with intrinsically safe
or non-incendive field wiring practices.
Verify that the operating atmosphere of the transmitter is consistent with the
appropriate hazardous locations certifications.
Both transmitter covers must be fully engaged to meet explosion-proof requirements.
Failure to follow these installation guidelines could result in death or serious injury:
Make sure only qualified personnel perform the installation.
Remove power before removing the electronics housing.