Emerson FB1100, Instruction Manual

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Emerson FB1100 Flow Computer Instruction Manual
D301752X012
August 2020
4 Introduction

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)
Central Processing Unit (CPU)
The flow computer’s CPU is a NXP ® Kinetis ® K61 series CPU with an ARM ® Cortex ® M4 processor
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 Usage
8 MB SRAM Holds in-use configuration, current state of all variables
128 MB Flash
Holds firmware image, historical logs, configuration backup (if saved to flash),
and the executing program
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).