Furnace oil flow meter

1) Standard for flowmeter flange:

l Standard for flanges: GB/T9115.1~9115.4-2000 standard

Flanges meeting special requirements can be supplied to user demand.

2) Installation of normal temperature type flowmeter:

l Flowmeter is normally installed horizontally, with display part above pipeline. According to actual operating conditions, vertical and upside down installation can also be used.

l To ensure accurate metering by flowmeter, front and rear straight pipe segments are normally required. To ensure system operation not affected by inspection and replacement of flowmeter, bypass pipeline shall be provided as much as possible.

The installation is shown below:

Flowmeter installation

1) Standard for flowmeter flange:

l Standard for flanges: GB/T9115.1~9115.4-2000 standard

Flanges meeting special requirements can be supplied to user demand.

2) Installation of normal temperature type flowmeter:

l Flowmeter is normally installed horizontally, with display part above pipeline. According to actual operating conditions, vertical and upside down installation can also be used.

l To ensure accurate metering by flowmeter, front and rear straight pipe segments are normally required. To ensure system operation not affected by inspection and replacement of flowmeter, bypass pipeline shall be provided as much as possible.

The installation is shown below:

1·2·3 are front valve, rear valve and bypass valve respectively. 4 is the flowmeter. L≥10D and L≥5D are lengths of front and rear straight pipe segments respectively. If limited by installation conditions, these lengths can be reduced to L≥5D or L≥5D for front segment and L≥3D for rear segment, with D as pipeline nominal diameter.

l For high temperature flowmeter of operating temperature lower than 200°C, the same installation mode as that of normal temperature flowmeter can be adopted.

l Flowmeter used for gas, liquid and steam etc. of operating temperature higher than 200°C shall adopt upside-down installation.

Note: Upside-down means flowmeter display part (sensor part) below pipeline. This installation mode does not affect metering performance of flowmeter.

4) Other

l Vertical installation can be adopted due to need by process. Measured media can flow up-down or down-up, but this shall be described to supplier when ordering.

l Process dimensions of pipeline connected to flowmeter shall be the same as those of the flowmeter, so as to reduce resistance due to difference in this regard, resulting in interference to flow and error of metering.

l For installation of flange type and clamped mounting type flowmeter, note if inside diameter of sealing gasket between flanges is the same as that of flowmeter and process pipeline, and coaxial, so as to avoid interference affecting metering accuracy.

l For newly completed process pipeline, preliminary purging shall be carried out before flowmeter installation.

l The direction pointed by the arrow on external wall of measurement tube is the direction of flow of measured media.

5) Special warning

It is not permitted to directly install valve, elbow and other parts that will greatly change flow state at front or rear end of flowmeter measurement tube.

If it is required to install parts such as valve and elbow on pipeline before and after the flowmeter, lengths of front and rear straight segments of pipe