Connect the equipment as shown in Figure4.10 and switch on the SL1
Set the balanced DC supply to 5V.If necessary,zero the meter using the SL103 and meter SET ZERO.
Use the SL1 Low Voltage Power Supply control and the SL30 pressure release valve to set the pressure to 100kPa,as indicated by the SL30 pressure gauge.
Reduce the pressure and record the corresponding values of pressure against meter reading,in steps as indicated in the table provided.