Emerson instruction manual OCX 8800 Hart Connections and AMS Application

Instruction Manual

IM-106-880, Rev 1.0 January 2007

OCX 8800

After verifying that you have all the components, select mounting locations and determine how each component will be placed in terms of available line voltage, ambient temperatures, environmental considerations, convenience, and serviceability. Figure 1-3 shows a typical system wiring. Simplified installations for the OCX 8800 are shown in Figure 1-4.

A source of instrument air is required at the OCX 8800 for reference air, dilution air, and eductor air. Since the OCX 8800 is equipped with an in-place calibration feature, provision should be made for connecting test gas tanks to the OCX 8800 when it is to be calibrated.

NOTE

The electronics module is designed to meet NEMA 4 (IP66) and the electronic components are rated to temperatures up to 185°F (85°C).

Retain packaging in which the unit arrived from the factory in case any components are to be shipped to another site. This packaging has been designed to protect the product.

Figure 1-3. OCX 8800 HART

Connections and AMS Application

OCX 8800 with

Integral Electronics

4-20 mA Output

(Twisted Pairs)

	3 calibration	Termination in
		Control Room
	gas lines by
Instrument	customer
Air	[300 ft (91 m) max.)

HART

Model 275/375

Handheld

Communicator

Customer’s Laptop

with AMS

AMS

37390002

1-7