Prowirl (Steam)

1 General

The Prowirl 200 is a flowmeter. We use the Prowirl 200 on lines with steam heating to measure the steam flow. For accurate results of the steam flow, you need to take the pressure in the system into account. The Prowirl 200 can read the system pressure from an external source. We use the Cerabar M to measure the pressure and send it to the Prowirl 200.

2 Commissioning

2.1 Device Settings

Adjust the parameters on the device as shown below.

Menu [E]
Language
english
Setup
	Tag Device
	Prowirl
	Medium Selection	Fix Prog Pressure
	Steam	any value > 0 (this activates Active pressure compensation for more accurate results)
	Current Input	Pressure Unit	Temp Unit	Density Unit	Current Span	4 mA Value	20 mA Value	Failure Mode
	Pressure	bar	°C	kg/m^3	4-20 mA NAMUR	0.0 bar	25.0 bar \*	Alarm
	Current Output 1	Assign Current	Energy Flow Unit	Current Span	4 mA Value	20 mA Value	Failure Mode
		Energy Flow	kW	4-20 mA NAMUR	0.0 kW	MDO: 1600 kW TDO:4000 kW	Min
	PFS Output	Operation Mode	Assign Pulse	Mass Unit	Value per Pulse	Pulse width	Failure Mode	Invert Outp. sig.
		Pulse	Mass flow	kg	1.0 kg	100 ms	No pulse	No
	Display	Format Display	Value 1 Display	0% bargraph 1	100% bargraph 1	Value 2 Display	Value 3 Display	0% bargraph 3
		4 Values	Energy Flow	0 kW	10.000 kW	Mass flow	temperature	0 °C
		100% bargraph 3	Value 4 Display
		200 °C	pressure

\* Depends on the range of the pressure sensor. Range can be found in the device settings of the pressure sensor. Default is 0-25 bar.

2.1.1 Hints

• For more accurate results, we use the option pressure compensation. To activate it, the Fix Prog Pressure must be set to a value greater than 0. The value itself does not matter, because the Prowirl 200 gets the actual value from the pressure sensor.
• The value per pulse (pulse valency) says how many kg have passed the sensor when one pulse is triggered. The FacMul in the WinCC parameter panel must be set to the same value as the pulse valency (see below).
  
• Usually the steam measuremnt Device is intsalled on ground level and the steam pipe is above on TDO top level. Since The water condensate and water pressure has an additional pressure of 1bar/10meters we have to compensate that.
  

Detailed information about the parameters can be found in the manual Prowirl 200 Device Parameters.

2.2 WinCC Parameters

We receive two values from the Prowirl 200:

• power in kW send via 4-20mA signal
• mass flow in kg send via pulse signal

The 4-20mA signal is scaled in the WinCC by the measuring range, as usual. The mass flow is calculated in the SCL-code and needs to be scaled by the pulse valency that was set on the sensor before (see above).

We do not need to set any Warnings or Alarms.

Attention: FacMul for steam power differ between MDO and TDO, because the flowmeters on MDO and TDO have different measuring ranges.

2.2.1 MDO

Steam Power

• FacMul = 1600 (depends on measuring range of flowmeter)
• FacDif = 27648

Steam Flow

• FacMul = 1.0 (depends on pulse valency set on sensor)
• FacDif = 1.0
• Filter PT1 = 10.0 sec

2.2.2 TDO

Steam Power

• FacMul = 4000 (depends on measuring range of flowmeter)
• FacDif = 27648

Steam Flow

• FacMul = 1.0 (depends on pulse valency set on sensor)
• FacDif = 1.0
• Filter PT1 = 10.0 sec