Emerson instruction manual Initial Power UP, OCX 8800 Defaults

Instruction Manual

IM-106-880, Rev 1.0 January 2007

OCX 8800

Figure 3-1. OCX 8800 Defaults

2

O

Switch	21.1 mA
Default Postions
Shown	3.5 mA

1

Open SW3

Closed 1 2 3 4

COe

Open

Closed

2 3 4

O2 21.1 mA/3.5 mA: O2 4-20 mA Signal

Rail Limits:

Open High - 21.1 mA

Closed Low - 3.5 mA

COe 21.1 mA/3.5 mA: COe 4-20 mA Signal

Rail Limits:

Open High- 21.1 mA

Closed Low - 3.5 mA

1 2 3 4

Internal:		External:	Internal:		External:
COe 4-20 mA		COe 4-20 mA	O2 4-20 mA		O2 4-20 mA
is Internally
		Requires an External	is Internally		Requires an External
Powered		Power Supply
	SW2		Powered	SW1	Power Supply
		(Default)
					(Default)

37390026

INITIAL POWER UP

Allow adequate time (approximately 60 minutes) for the heaters to begin operation and for the OCX 8800 to reach normal operating temperature on power up. Normal operating temperature for the O2 cell is 736°C. Normal operating temperature for the combustibles cell is 300°C. The normal sample line temperature is 170°C. During this time the eductor air solenoid will remain closed so no sample is pulled through the analyzer. When the OCX reaches operating temperature the solenoid will energize, eductor air will begin to flow, and the unit will begin normal operation.

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