Steam Flow Meters (SFMc-150)


The SFMc-150 Steam Flow Meter System is engineered to suit your requirement. It has no moving parts and no wiring connections are required during installation.

The mass flow rate of Saturated and Superheated steam is calculated by measuring the differential pressure across the orifice plate and instantaneous density. Online density compensation is possible because of the online pressure and temperature measurement.

In conventional system of measurement, the differential pressure generated by orifice plate is measured by DP transmitter. The output of from DP transmitter after square rooting is accepted as proportional to flow rate. This assumption is true only when the density is constant.

Unfortunately density of compressible fluid is never constant. The density of compressible fluid changes with line pressure and line temperature. Thus, introducing errors in flow rate measurement.

steam flow meters (SFMc-150)

Specifications :

• Size: 1 inch to 10 inch
• Type of flow element: Differential flow element
• Accuracy: ±2.5% to 3% of actual reading
• Typical turndown: 10:3 (standerd), 10:1 (Contact to factory)
• Density compensation: Online monitoring and compensation of density
• Communication protocol: MODBUS, RTU
• Communication port: RS485, RS232 (optional)

PRINCIPAL ADVANTAGES :


1. Online density compensation possible because of the online pressure and temperature measurement.
2. Various sizes of orifice assemblies available with accurate design calculations, with or without IBR approval as per application.
3. Sturdy, rugged field mounting type pressure transmitter is supplied with standard end connection.
4. Online display of compensated mass flow rate, density, temperature & output of DP transmitter is offered.LED indication for status of steam (saturated or superheated) is provided.
5. User friendly. No need to feed all the complicated orifice constants since the system is intelligent enough to calculate.
6. Isolated 4-20mA dc output proportional to compensated flow rate.
7. Disconnection of DPT, PT and Temperature sensor is indicated by error message.
8. Complete system engineered to suit your requirement.
9. Standard System and highly reliable.
10. Calibration of RTD, DP transmitter, pressure transmitter is easy and inexpensive.
11. No moving Parts.
12. No wiring connections are required during installation.
13. Installation is easy and suitable.

FEATURES OF STEAM FLOW METER :

• Easy user friendly programming
• Password protected for all modes except display mode.
• Computer/Printer Interfacing with RS 232/RS 485 port with MODBUS RTU
• Fault indication indicated by different error codes
• Overflow indicated by blinking display up to 3000 readings (for more readings consult factory)
• Data logging facility with 3445/ 6890 number of reading is available
• Linear or square root operation
• Universal power supply
• Suitable for Saturated &/or Superheated Steam
• Two alarm setting configured on pressure input
• Steam status indication (Saturated/ Superheated)
• Pressure and temperature offsets generated by site condition can be compensated
• Mass flow calculation as per ASME algorithm

Specifications :

1. Service

:

Saturated, superheated steam and thermic fluid in closed Pipes.

2. Size

:

1” to 10”

3. Type of flow element

:

Differential flow element.

4. MOC of flow element

:

SS 316

5. End Connection

:

SORF flange

6. MOC of flanges

:

M.S/C.S/S.S

7. Flange Rating

:

Class 150 (OTHER ON REQUEST)

8. Orifice Flange assembly

:

WNRF Class 300

9. DPT

:

With Display

10. Data logging

:

4900 readings or 9800 readings (optional).

11. Comm. Port

:

RS485, RS232 (optional).

12. Comm. Protocol

:

MODBUS , RTU

13. Design Standard

:

BS: 1042/ ISO : 5167

14. Accuracy

:

±2.5% to 3% of actual reading

15. Typical turndown

:

10:3 (standerd)
10:1 (Contact to factory)

16. Density compensation

:

Online monitoring and compensation of density

17. Gas Temperature

:

Up to 70°C

18. Power Supply

:

85 to 265 VAC @ 50Hz

* Specifications are subjected to change without prior notice