Instruction Manual
SPS 4001B
REFERENCE AIR FLOW SETUP
CALIBRATION GAS FLOW SETUP
AUTOMATIC
CALIBRATION
If instrument air is to be used as the reference gas, set the reference air pressure regulator to 20 psig (138 kPa gage) and set the reference air flow meter to 2 scfh. Refer to the Reference Air Package in the Oxymitter 4000 Instruction Manual for more information.
After installing the SPS 4001B as described in Section 2, Installation, calibrate the Oxymitter 4000 to verify SPS 4001B operation and the communication link between the sequencer and Oxymitter 4000.
1.Verify that both calibration gases are connected to the SPS 4001B. Also verify that the pressure regulators on both calibration gas bottles are set to 20 psi (138 kPa).
2.Initiate a
NOTE
Set the calibration gas flow meter only upon initial installation and after changing the diffusion element in the Oxymitter 4000. Refer to the flow meter adjustments in Section 4, Maintenance and Service for more information.
3.As the Oxymitter 4000 and SPS 4001B apply the first calibration gas, set the calibration gas flow meter to 5 scfh. When the second calibration gas is applied, verify that the flow meter reads 5 scfh. If not, adjust the pressure regulator on the second calibration gas bottle so the 5 scfh flow is provided.
Automatic calibrations require no operator action and can be performed through the Oxymitter 4000 CAL RECOMMENDED feature or through scheduled time intervals that can be programmed through the HART/AMS for the Oxymitter 4000. In addition, the calibration gases must be permanently piped to the Oxymitter 4000.
CAL RECOMMENDED
If the Oxymitter 4000 is configured for handshake mode with the SPS 4001B, the Oxymitter 4000 can initiate a calibration by sending a signal to the sequencer when the CAL RECOMMENDED LED activates. To enable handshake mode, the Oxymitter 4000 logic I/O must be set for mode 8 or mode 9 (handshake).
The handshake mode is configured at the factory or can be accessed through HART/AMS. Refer to the logic I/O information in the HART/AMS section of the Oxymitter 4000 Instruction Manual for more information.
Timed Interval
An automatic calibration can also be programmed to occur at a specific time interval, in hours, using the HART communicator or AMS software. Refer to the HART/AMS section of the Oxymitter 4000 Oxygen Transmitter Instruction Manual for this procedure.
