Pressure comparison pumps are used for generating pressure for the testing, adjusting and calibrating of mechanical and electronic pressure measuring instruments by means of comparison measurements. These pressure tests can be carried out in laboratories, workshops or on site at the set measuring point.
When the device under test and a reference measuring instrument with an adequate accuracy are connected to the test pump, the same pressure will act on both measuring instruments after actuating the pump. A calibration or an adjustment can be carried out by comparing the two measured values at any pressure value.
In order to enable an accurate generation of the measuring points, the pressure comparison pump LR-Cal LSP 1200 is provided with a fine adjustable spindle pump. In addition, the LR-Cal LSP 1200 feature a spindle which only runs withing the pump body. Thus there is no adverse bending moment acting on an outstanding spindle, and particularly for field use this has the advantage that the dimension of these pressure comparison pumps will not change when the spindle is turned during operation. The LR-Cal LSP 1200 needs only little force to generate also high pressures.
|Pressure generation||[bar]||0...1,200 (17,400 psi)|
|Medium||Mineral oil based hydraulic fluids or destilled water|
|Pressure ports||2 x 1/2" BSP female, rotating, incl. O-ring seal|
|Spindle stroke||[cm³]||approx. 3.9 (per turn approx. 0.1)|
|Needed force||[Nm]||at 250 bar: 2.0; at 500 bar: 4.0; at 1,000 bar: 8.0|
|Materials||Stainless steel, aluminium, brass, Plexiglass, ABS, Viton and NBR|
|Distance of pressure ports||[mm]||200|
|Dimensions||[mm]||L 300 x D 600 x H 240 (without spindle star)|
|Stationary fixing||Rigid base plate|
|BLINDSTOPFEN-G12-MS||Blind plugs for both pressure ports (1/2" BSP), two pcs. required.|
|LSP-DOV||Spare O-rings for pressure ports (1/2" BSP), bag with 10 pcs.|
Set of stainless steel adapters for pressure ports
|CPB5000-WA90||90° angled adapter 1/2" BSP, needed for test items with
|CPB5000-FLUID||Operating fluid (mineral oil based hydraulic fluid)
Bottle with 1 l content
Little video about usage of the LR-Cal LSP pressure comparison pumps: