The PIT-PVT-light installation is designed to study the reservoir fluids phase behavior at conditions from reservoir to normal. Main element of the system are pumps installed in a heating cabinet and providing a fluid sample circulation in a closed circuit. The circuit includes a high-pressure and temperature densitometer, a capillary for viscosity measuring, and a high-precision differential pressure sensor. The installation includes a manual gas meter.
Research is carried out in accordance with GOST 153-39.2-048-2003.
| Hydraulic system | |
| PVT pump type | piston | 
| Maximum working pressure, MPa 21 | 21 (optional 52) | 
| PVT pump plunger volume, ml | 500 (optional 260) | 
| Maximum working temperature, °C | 200 | 
| Oil pump type | double plunger | 
| Maximum working pressure, MPa | 21 (optional 52) | 
| Pump plunger volume, ml | 500 (optional 260) | 
| Viscosity measurement | two circuits | 
| Densitometer maximum working temperature, °C | 200 | 
| Temperature maintenance system | |
| Type | heating chamber, individual heaters | 
| Operation mode | heating / cooling | 
| Working temperature range, °C | from +5 to +200 | 
| Temperature measurement accuracy, °С | no more than ±1 | 
| Temperature setting resolution, °C | ± 0,1 | 
| Heated elements | PVT pumps, supply tubes, densitometer, viscosity measurement circuits | 
| Material | stainless steel | 
| Emitted gas volume measuring system (gas meter) | |
| Control type | manual | 
| Measuring cylinders number | 2 | 
| Gas meter total volume | 3000 ml | 
| Volume resolution, ml | 0,2 | 
| Working pressure | atmospheric | 
| Fluid-contact parts material | stainless steel, glass, PEEK |