Emerson Rosemount OCX8800 User Manual

Instruction Manual
IM-106-880C, OI
Section 1: Description and
Specifications
April 2017
System
Features
5
1.3.4 System Features
1. The O
2
cell output voltage and sensitivity increase as the oxygen concentration decreases.
2. HART or Foundation Fieldbus communication is standard. To use this capability, you must
have either:
a. Model 375 Field Communicator.
b.AMS software for the PC.
3. Oxygen cell and heater/thermocouple assembly are field replaceable.
4. Electronics are automatically configured for line voltages from 100 to 240 VAC.
5. An operator can calibrate and diagnostically troubleshoot the Hazardous Area OCX 8800 in
one of two ways:
a. LOI. The LOI is mounted to the end of the electronics module and allows local
communications with the electronics. Refer to Section 4, Using the LOI, for
more information.
b. HART or Foundation Fieldbus interface. The Hazardous Area OCX 8800's output line
transmits a digital signal with the detected oxygen or combustible levels encoded
in a digital format. This information can be accessed through the following:
• Model 375 Field Communicator - The handheld field communicator requires
Device Description (DD) software specific to the Hazardous Area OCX 8800. The
DD software will be supplied with many Model 375 units, but can also be
programmed into existing units at most Emerson service offices. Refer to
Section 6, Field Communicator, for additional information.
• Personal Computer (PC) - The use of a personal computer requires AMS software
available from Emerson.
• Selected Distributed Control Systems - The use of distributed control systems
requires input/output (I/O) hardware and AMS software which permit HART or
Foundation Fieldbus communications.
6. When the transmitter is configured without the LOI an operator must calibrate and
diagnostically troubleshoot the Hazardous Area OCX 8800 using the HART or Foundation
Fieldbus Interface.
7. Optional Blowback System. The blowback system periodically blows instrument air back
through the sample line filter and out the sample tube. This clears out particulate and keeps
the sample line filter from clogging.

Emerson Rosemount OCX8800 Specifications

General

Brand	Emerson
Model	Rosemount OCX8800
Category	Transmitter
Language	English