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Instruction Manual
IM-106-880C, OI
September 2009
Hazardous Area OCX 8800
3-4
Verify that the following switch settings are correct for your Hazardous Area
OCX 8800 installation:
SW3 The factory sets this switch as follows:
• Position 1 not used.
• Position 2 not used.
• Positions 3 and 4 must be set as shown for proper software control of
the device heaters.
INITIAL POWER UP Allow adequate time (approximately 60 minutes) for the heaters to begin
operation and for the Hazardous Area OCX 8800 to reach normal operating
temperature on power up. Normal operating temperature for the O
2
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.
SET TEST GAS VALUES Use Field Communicator or the optional LOI to set test gas values for
calibration. Refer to Section 4, Using the LOI or Section 6, Field
Communicator for more information.
Setting Test Gas Values with the Field Communicator
1. Use the 375 Field Communicator software to access the HART menu.
2. From the DETAILED SETUP menu, select CAL SETUP.
3. From the CAL SETUP menu, select O2 CAL PARAMS or COe CAL
PARAMS.
4. From O2 CAL PARAMS, select O2 HIGH GAS. Enter the percent O
2
used for the high O
2
test gas.
5. From O2 CAL PARAMS, select O2 LOW GAS. Enter the percent O
2
used for the low O
2
test gas.
6. From COe CAL PARAMS, select COe Test Gas. Enter the CO
concentration (ppm) used for COe test gas.
Setting Test Gas Values with Fieldbus Communicator
1. Use the 375 Field Communicator software to access the Fieldbus menu.
2. From the TRANSDUCER menu, select O2 CAL.
3. From O2 CAL menu select O2 CAL SETUP.
4. From O2 CAL SETUP, select O2 HIGH GAS. Enter the percent O
2
used
for the high test gas.
5. From O2 CAL SETUP, select O2 LOW GAS. Enter the percent O
2
used
for the low test gas
6. From the TRANSDUCER menu select COe CAL SETUP.
7. From COe CAL SETUP, select COe Test Gas. Enter the CO
concentration (ppm) used for the COe Test Gas.