Micro Motion RFT9709 Instrukcja Obsługi Pobierz pdf (Strona 191)

Using ProLink

Software with Micro Motion

Transmitters

177

Appendix C Temperature Coefficients for

Flow and Density

C.1 Flow temperature

coefficient

The flow temperature coefficient represents the percent change in the

rigidity of the flow tubes around the twist axis per 100°C.

The flow temperature coefficient is derived from the last three digits and

second decimal point in the flow calibration factor that appears on the

sensor serial number tag.

• Sensor serial number tags vary in appearance, depending on the

manufacturing date.

• Use a HART Communicator, Modbus protocol, or ProLink software to

enter the flow temperature coefficient into the transmitter memory.

C.2 Density temperature

coefficient

The density temperature coefficient represents the percent change in

the elasticity of the flow tubes around the bend axis per 100

The density temperature coefficient is derived from values that appear

on the sensor serial number tag.

• If the tag shows a 13-digit density calibration factor, derive the

density temperature coefficient from the last three digits of the

density calibration factor.

• If the tag shows K1, K2, and TC values, derive the density

temperature coefficient from the TC value.

• Sensor serial number tags vary in appearance, depending on the

manufacturing date.

Use a HART Communicator, Modbus protocol, or ProLink software to

enter the flow temperature coefficient into the transmitter memory.

CAUTION

Entering incorrect flow and density temperature

coefficients can cause measurement error.

Do not enter flow and density temperature coefficient

values that are listed in the instruction manual.

Make sure flow and density temperature coefficients

entered into the transmitter and peripheral device are

equivalent to the coefficients on the sensor serial

number tag.

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Micro Motion RFT9709 Instrukcja Obsługi Strona 191