- Difference between step 7 micro win 1.0 and 4.0 serial#
- Difference between step 7 micro win 1.0 and 4.0 full#
- Difference between step 7 micro win 1.0 and 4.0 series#
In the software, on the mimic diagram, set the 'Mode' to 'Series' by selecting the appropriate radio button. Rename this new results sheet to 'Series'. Create a new results sheet using the (New) icon. After taking the final set of data, fully open the gate valve. Continue to close the gate valve to give incremental changes in flow rate, recording the sensor data each time. Close the gate valve to reduce the flow by a small amount. Select the (Go) icon to record the sensor readings and pump settings on the results table of the software. In the software, on the mimic diagram, set the 'Mode' to 'Single' by selecting the appropriate radio button. Close pump 2 outlet valve and open pump 1 outlet valve. If results are not available then proceed as follows: 4ĥ Single pump performance: a.
Difference between step 7 micro win 1.0 and 4.0 full#
If results are already available for a single pump across its full flow range, load those results into the software now and jump to the section of this exercise using two pumps. Allow water to circulate until all air has been flushed from the system. As the speed of pump 2 is fixed at its design operational point, pump 1 should be set to match - select 80% for a 50Hz electrical supply, or 100% for 60 Hz. Both pumps must be used at the same setting in this experiment to ensure identical performance. Check that 'IFD: OK' is displayed in the bottom right corner of the screen and that there are values displayed in all the sensor display boxes on the mimic diagram. Ensure the interface device is connected to an appropriate mains supply, and switch on the supply. The red and green indicator lights on the interface device should both be illuminated. Ensure the equipment is connected to the interface device and the interface device is connected to a suitable PC. Ensure the inlet valve and gate valve are both fully open. Check that both pumps are fitted with similar impellers (the impellers may be viewed through the clear cover plate of each pump). If necessary, fill the reservoir to within 10cm of the top rim.
Difference between step 7 micro win 1.0 and 4.0 series#
3Ĥ Figure 3: Pump curve for two pumps in series Equipment Set Up: If the equipment is not yet ready for use, proceed as follows: 1. The combined pump headcapacity curve is found by adding the heads of the single pump curves at the same capacity. When two pumps operate in series, the flow rate is the same as for a single pump but the total head is increased. Two pumps may be connected in series, so that water passes first through one pump and then through the second. Combining two pumps increases the pumping capacity of the system.
Exercise A (Series pumps) Theory: A single pump may be insufficient to produce the performance required. Pump 2 is an identical model but is run at its design speed, which is equivalent to a setting of 80% on the variable-speed pump for a 50Hz electrical supply, or 100% for a 60 Hz supply. On pump 1, the speed of the motor is adjustable to give a range of 0 to 100%, allowing operation as a single pump for pump performance analysis. Single Pump: 2ģ Series Pumps: Parallel Pumps: The two pumps are motor-driven centrifugal pumps. The software should also be set to the corresponding flow path to ensure that the correct calculations are performed. The system valves are as shown: Valves should be set to configure the system as follows. Figure 1: Series and parallel pump demonstration unit 1Ģ Figure 2: Interface of one of the suitable softwares Setting the flow path The system may be configured to drive flow using single, series or parallel pumps. Series and parallel pumps demonstration unit (Figure 1).
Purpose: To investigate the result on discharge and total head of operating pumps in series and in parallel. Signals from these sensors are sent to a computer via an interface device, and the unit is supplied with data logging software as standard. The unit is fitted with electronic sensors which measure the process variables. The apparatus consists of a tank and pipework which delivers water to and from two identical centrifugal pumps. The experimental unit provides the determination of the characteristic behavior for single operation and interaction of two pumps.
Difference between step 7 micro win 1.0 and 4.0 serial#
In serial operation the heads of the pumps are added and in parallel operation the flow rates (capacities) of the pumps are added. Two typical options include parallel and series configurations of pumps which require a specific performance criteria. For some piping system designs, it may be desirable to consider a multiple pump system to meet the design requirements. 1 Introduction: Centrifugal pumps are often used together to enhance either the flow rate or the delivery pressure beyond that available from the single pump.
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