Experimental Investigations on Leakages in Positive Displacement Machines

Table 4

The details of the equipment/instruments used in experimentation.

Equipment/instrument	Model	Make	Uncertainty	Specification
Twin-screw compressor	RS22-7-AC	Ingersoll Rand	—	Oil flooded twin-screw compressor; 22 kW, 7 bar, 140 CFM
Air receiver—horizontal	272 liter	Ingersoll Rand	—	272-liter air receiver
Data acquisition system (DAS)	34980A	Agilent	—	140 channel universal input and connectivity to lap top for real time monitoring and capturing the readings
Pressure transducer	245 series	Viatran	±0.1%	Measuring range—0 to 300 psig
T type thermocouple	TQSS-18 U-6	Omega	0.5^0 C	Measuring range—200 to 350°C
Barometric pressure gauge	CPG2400	Mensor	0.03%	Measuring range—8-17 psia
CAV pressure gauge	CPG2400	Mensor	0.03%	Measuring range—0-100 psig
Globe valve with actuator	GX + FIELDVUE DVC6200	Emerson	±0.5%	Minimum recommended supplied pressure: 0.3 bar (5 psig) higher than maximum actuator requirements; Maximum: 10.0 bar (145 psig) or maximum pressure rating of the actuator, whichever is lower; Medium: Air or natural gas; Independent linearity; Typical value: ±0.50% of output span