Emerson FB1100 - Removing;Replacing the SRAM Battery

FB1100 Flow Computer Instruction Manual
D301752X012
November 2023
Service and Troubleshooting 61
10. Replace the end cap. Screw the end cap clockwise (eight full turns) until it is tightly
sealed to the enclosure. Re-attach the retaining clamp, if applicable (see Section
2.6.1).
4.6 Removing/Replacing the SRAM Battery
A lithium coin cell battery provides backup power for the SRAM and the real time clock.
The SRAM backup battery can last for up to 10,000 hours of cumulative operation and
runs only if the main power system fails. In a non-hazardous area, you do not need to
power down the unit to replace the SRAM backup battery.
Important
• If the unit is ever powered down without the SRAM battery installed, SRAM data is
lost. Always back up your data before you remove the SRAM battery if you know that
main power will also be off.
• Replacement SRAM backup batteries must be either the Rayovac
®
Model BR2335 or
the Panasonic
®
Model BR2330.
DANGER
Ensure the flow computer is in a non-hazardous area. Never remove end caps in a
hazardous area.
DANGER
Do not disconnect equipment unless power has been removed or the area is known to
be non-hazardous.
DANGER
EXPLOSION HAZARD: Substitution of any components may impair suitability for Class I,
Division 1 or Class I, Division 2.
DANGER
EXPLOSION HAZARD: Do not replace batteries unless power has been switched off or the
area is known to be non-hazardous. Batteries must only be changed in an area known to
be non-hazardous.
1. Remove the retaining clamp from the front end cap (if present). (See Section 2.6.1)
2. Remove the front end cap.