Emerson Process Management 2400S manual 7DeviceNet tool Flowmeter zero procedure

Measurement Performance

Figure 10-7DeviceNet tool – Flowmeter zero procedure

Modify zero time if

required

Perform zero

Check status

Check outcome

Check zero values

Class: Calibration Object (0x65)

Instance: 1

Attribute ID: 3

Data type: UINT

Units: seconds

Service: Set

Class: Calibration Object (0x65)

Instance: 1

Service: 0x4B (perform or abort zero) Value:

·0: Abort zero calibration

·1: Start zero calibration

Class: Diagnostics Object (0x66)

Instance: 1

Attribute ID 16, Bit 0x8000

Value:

·0: Zero complete

·1: Zero in progress Data type: USINT

Class: Diagnostics Object (0x66)

Instance: 1

Attribute ID 12, Bit 0x0020

Value:

·0: Zero succeeded

·1: Zero failed Data type: USINT

Class: Calibration Object (0x65)

Instance: 1

Attribute ID 4: Zero standard deviation

Attribute ID 5: Zero offset

Data type: REAL

Units: milliseconds

Compensation

Measurement Performance

Troubleshooting

10.6Performing density calibration

Density calibration includes the following calibration points:

•All sensors:

-D1 calibration (low-density)

-D2 calibration (high-density)

•T-Series sensors only:

-D3 calibration (optional)

-D4 calibration (optional)

For T-Series sensors, the optional D3 and D4 calibrations could improve the accuracy of the density measurement. If you choose to perform the D3 and D4 calibration:

•Do not perform the D1 or D2 calibration.

•Perform D3 calibration if you have one calibrated fluid.

•Perform both D3 and D4 calibrations if you have two calibrated fluids (other than air and water).

Defaults

Configuration and Use Manual 103