Operator Manual

748223-K June 2002

Model 7003M

3-4

Run Mode ..............................................................................................................................

3-10

 

a.

Display Oxygen Concentration/Sensor Temperature .....................................................

3-10

 

b.

Acknowledge Alarms ......................................................................................................

3-10

 

c.

Access Other Modes.......................................................................................................

3-10

3-5

Setup Mode ...........................................................................................................................

3-11

 

a.

Security Code..................................................................................................................

3-13

 

b.

Current Output Range - 0-20mA or 4-20mA................................................................

3-13

 

c.

Range Endpoint Adjustments .........................................................................................

3-13

 

d.

Zero Offset Adjustment ...................................................................................................

3-15

3-6

Alarm Mode vs. ON/OFF-Control Mode ................................................................................

3-16

 

a.

Relay Configured as Alarm .............................................................................................

3-16

 

b.

Relay Configured as ON/OFF-Controller........................................................................

3-16

 

c.

Relay Contacts................................................................................................................

3-18

 

d.

Fail Safe Operation .........................................................................................................

3-18

 

e.

Relay Reset Upon Fatal Error.........................................................................................

3-18

 

f.

Pressure Effects on Alarms ............................................................................................

3-18

 

g.

Setting Alarm and ON/OFF-Controller Relays................................................................

3-18

 

h.

Setting Alarm Setpoints ..................................................................................................

3-18

 

i.

Setting Alarm ON and OFF Levels .................................................................................

3-19

4-0

CALIBRATION AND ADJUSTMENTS.................................................................................

4-1

4-1

Frequency of Calibration .......................................................................................................

4-1

4-2

Calibration mode ...................................................................................................................

4-1

 

a.

Zero Calibration...............................................................................................................

4-1

 

b.

Span Calibration..............................................................................................................

4-1

 

c.

Pressure Compensation - Correction for Constant Pressure Differences ......................

4-4

4-3

Hold Mode .............................................................................................................................

4-5

4-4

Diagnostics Mode ..................................................................................................................

4-8

 

a.

Raw Sensor Voltage .......................................................................................................

4-8

 

b.

Test Current Output ........................................................................................................

4-8

 

c.

Linearizing Current Output..............................................................................................

4-8

 

d.

Test Alarm Relays...........................................................................................................

4-10

4-5

Adjustments And Settings .....................................................................................................

4-10

5-0

THEORY................................................................................................................................

5-1

5-1

Principles Of Operation .........................................................................................................

5-1

 

a.

Electrochemical Theory ..................................................................................................

5-1

5-2

Effects of Sample Conditions ................................................................................................

5-1

 

a.

Barometric Pressure .......................................................................................................

5-1

 

b.

Humidity ..........................................................................................................................

5-1

 

c.

Sample Temperature ......................................................................................................

5-1

 

d.

Interfering Gases.............................................................................................................

5-2

5-3

Circuit Descriptions................................................................................................................

5-2

 

a.

Signal Board....................................................................................................................

5-2

 

b.

Power Supply Board .......................................................................................................

5-2

 

c.

Microprocessor Board.....................................................................................................

5-2

 

d.

Alarm Circuits..................................................................................................................

5-2

6-0

ROUTINE SERVICING AND TROUBLESHOOTING...........................................................

6-1

6-1

Routine Servicing ..................................................................................................................

6-1

6-2

Troubleshooting.....................................................................................................................

6-1

 

a.

Symptoms .......................................................................................................................

6-1

ii Contents

Rosemount Analytical Inc. A Division of Emerson Process Management