Central Processing Unit (Cpu); Memory; Explosion-Proof Enclosure - Emerson FB1100 Instruction Manual

Emerson FB1100 Flow Computer Instruction Manual
D301752X012
August 2020
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Central Processing Unit (CPU)

The flow computer's CPU is a NXP
that operates at 4 to 60 MHz depending on the power mode. The CPU runs the Micrium operating
system.
1.3.1

Memory

The flow computer includes both static and flash memory.
Table 1-1: Memory
Memory
8 MB SRAM
128 MB Flash

Explosion-proof Enclosure

The FB1100 Flow Computer includes an explosion-proof enclosure made of either aluminum or
stainless steel. The enclosure consists of the main housing, two threaded covers, and four conduit
entry points.
The four conduit entry points are ¾ in NPT pipe threaded holes that permit entry of field conduit
for I/O and communication wiring. ATEX installations use a ¾ in NPT to M20 thread reducer.
Unused apertures shall be closed with suitable blanking elements.
The FB1100 Flow Computer can operate in an unprotected outdoor environment. Wiring for I/O,
communications, and power enters the enclosure through the four conduit fittings with
appropriate protective seals and connects to the terminal plate.
The front end cap (cover) provides a viewing window for the HMI module. You can access the
terminal plate by removing the rear end cap (cover).
4
Power from a DC power supply, a lithium battery, or an optional lead acid battery/solar panel
combination
Serial communication options for RS-232, RS-485 (2-wire), RS-485/422 (4-wire).
HMI module with optional display and back light for local operator interaction
Optional Wi-Fi ® transceiver (802.11 b/g) for field technician to access the flow computer
from a laptop without physical cable connection
Application software supports AGA3, AGA8, ISO 5167, ISO 6976, and API 21.1 calculations in
U.S., metric, or other natural gas standard units
Support for one-year autonomous measurement without external power (lithium battery
option)
Usage
Holds in-use configuration, current state of all variables
Holds firmware image, historical logs, configuration backup (if saved to flash),
and the executing program
® Kinetis ® K61 series CPU with an ARM ® Cortex ® M4 processor
Introduction