Emerson 3000 instruction manual World Class, Instruction Manual, 3-4SETTING THE O2 ALARM SETPOINTS

Instruction Manual

IB-106-300NH Rev. 4.3 May 2005

World Class 3000

automatic calibrations, set the Auto Cal pa- rameter to Yes.

f.The Output Tracks setting determines whether the analog output tracks the oxy- gen reading during a calibration. Setting Output Tracks to No locks the analog output value to the last measured oxygen reading until the calibration is complete.

g.The Cal Interval parameter sets the time in hours and days between automatic calibra- tions. When Auto Cal is set to NO, this pa- rameter is set to OFF.

h.The Next Cal parameter displays the time until the next scheduled automatic calibra- tion. If automatic calibration is not enabled, this parameter displays Disabled.

i.The Gas Time parameter sets the amount of time that calibration gas flows during an automatic calibration before a reading is taken. This value is not used for semiauto- matic calibrations.

j.The Purge Time parameter sets the amount of time after an automatic calibration before the system is returned to normal operation. This allows time for the calibration gases to clear the lines and the system to return to the process gas concentration. This value is not used for semiautomatic calibrations.

k.The Res Alarm parameter displays the set- point for the Res Hi alarm. Do not change this parameter unless directed by a qualified Rosemount Analytical Service Engineer.

l.Press the ESC key twice to return to the Main menu.

3-4 SETTING THE O2 ALARM SETPOINTS

The IFT has a high and low O2 alarm. To change the alarm setpoints, press the SETUP key on the GUI keypad and select the O2 Alarms sub-menu.

The Hi Alarm and Lo Alarm values are the set- tings for the high and low oxygen concentration

alarms, respectively. The Alarm DB parameter allows the setting of an alarm dead band. When a dead band is set, the O2 value must change by the dead band value before the alarm will re- set. For example, if the Hi Alarm is set to 8.00% and the dead band is set to 0.25%, the O2 con- centration must drop to below 7.75% before the O2 alarm will clear. This prevents the alarms from continually activating and clearing when the oxygen value is near the alarm setpoint.

3-5 CONFIGURING EFFICIENCY CALCULATIONS

To enable efficiency calculations and set the ef- ficiency constants, press the SETUP key on GUI keypad, and select the Efficiency Calc sub- menu. The Enable Calc selection turns effi- ciency calculation on and off. Enter the K1, K2, and L3 constant values in the appropriate fields. Efficiency constant values are listed in Table 5-6 for oil and gas for the US and Europe.

3-6 CONFIGURING THE RELAY OUTPUTS

The IFT has two relays that can be individually configured. Each relay can be triggered by three separate events selected from a list of eight events. Use the following procedure to configure the relay outputs.

a.Press the SETUP key on the GUI keypad. Select the Relay Outputs sub-menu.

b.Select K1 Setup or K2 Setup to configure relay one or relay two, respectively.

c.Set Event 1, Event 2, and Event 3 to the desired triggering event. The relay will be energized when any of the three events oc- curs. If you do not want a relay to trigger on three events, set the desired trigger or trig- gers and set the remaining events to Off.

Note that the TG Low event will only func- tion if the system includes an MPS 3000 Multiprobe Test Gas Sequencer.

d.Press the ESC key and select the other re- lay. Configure the relay as described above.

e.Press the ESC key three times to return to the Main menu.

3-2 Setup Rosemount Analytical Inc. A Division of Emerson Process Management