LR-Cal LPP 40
Pressure test pump
Manual test pressure generation -0,95...+40 bar


- Portable
- Pneumatic (with ambient air)
- Test pressure generation up to 40 bar (580 psi), switchable to
- Vacuum generation up to -0.95 bar (-28 inHg)
- Simple generation, precise fine adjustment
Application + Description
LR-Cal LPP 40 Application + Description
The LR-Cal LPP 40 handheld pressure test pump (also known as a calibration test pump, calibration pump, or hand pump) is a pneumatic test pressure source for positive pressure up to 40 bar (580 psi) and vacuum (negative pressure) down to -0.95 bar (-28 inHg). It is used for testing, adjusting, and calibrating electronic and mechanical pressure measuring devices (pressure transducers, transmitters, pressure gauges, pressure switches) through comparative measurement. The operating medium is ambient air. Tests can be performed on-site at the measurement location or in a stationary setup in a laboratory or workshop.
Procedure for a Comparative Measurement
- The reference pressure gauge is mounted directly on top of the pump (hand-tight, without tools and without additional seals). LR-Cal pressure calibrators (and digital pressure gauges) or analog reference pressure gauges (see Accessories: LPP-MANO) are suitable as references.
- The test unit is attached to the open end of the standard pressure hose (length 0.5 m, 1/4" BSP female free rotating thread), hand-tight and without tools. Adapter sets (BSP, NPT, metric) are available as accessories for other thread types. This creates a closed-loop calibration circuit with a low volume.
- When the pump is activated, the same pressure acts on both the reference gauge and the test specimen. The hand lever generates the pre-pressure, while the volume variator generates the high pressure. By switching modes, the LR-Cal LPP 40 also generates a vacuum.
- The user sets the desired test pressure using the fine-adjustment valve (volume variator). It alters the volume of the calibration circuit only slightly, allowing for precise pressure adjustment. The Volumentool accessory (LPP-VOLUMEN-TOOL) further facilitates high-pressure generation and fine adjustment.
Specification
LR-Cal LPP 40 specification
| Description | Value |
|---|---|
| Pressure generation: | 0 to 40 bar = 0 to 580 psi, switchable to |
| Vacuum generation: | 0 to -0,95 bar = 0 to -28 inHg |
| Pressure ports (standard version): |
For reference pressure instrument: 1/2" BSP female, freely rotating, with integr. O-ring, on the top of the pump For test item: 1/4" BSP female, freely rotating, with integr. O-ring, at the pressure test hose of the pump |
| Materials: | Aluminium, brass, ABS, NBR |
| Priming pressure: | Hand lever |
| High pressure: | Volume adjustment valve |
| Fine adjustment: | Volume adjustment valve (fine adjustment, large volume) |
| Dimension: | approx. 220 x 105 x 63 mm |
| Weight: | approx. 510 g |
| Order-Code: | LPP-40 |
Special version with reference pressure port 1/4" BSP female rotating: Order-Code LPP-40-G14
Special version with reference and test item pressure ports 1/4" NPT female: Order-Code LPP-40-N14
Scope of standard supply
LR-Cal LPP 40 scope of standard supply
- Pressure test pump LR-Cal LPP 40 with reference instrument connection 1/2" BSP female (free-running) on top of the pump and with test item connection 1/4" BSP female (free-running) on the test item connection hose
- Test pressure hose, length 0.5 meter
- Operating manual DE+EN
LR-Cal LPP 40 accessories + spare parts
Volume tool for even easier handling

Accessory:
Tool (made of aluminum) for attaching to the fine adjustment valve. It increases the diameter and makes high pressure generation and fine pressure adjustment even easier.
Transport and storagecase

Accessory:
Rigid transport and storage case with molded foam insert
Set of thread adapterBSP

Accessory:
Set of BSP thread adapter incl. set of suitable O-ring seals for test item port of the pump
- 1/4" BSP m x 1/8" BSP female
- 1/4" BSP m x 3/8" BSP female
- 1/4" BSP m x 1/2" BSP female
- 1/4" BSP m x 1/2" BSP male
O-ring seals forBSP adapter

Accessory:
Spare part for thread adapter set code LPP-ADAPTER-BSP:
Set of O-rings
Set of thread adapterNPT (self-sealing)

Accessory:
Set of NPT adapter including suitable O-ring seals for test item port of the pump
- 1/4" BSP m x 1/8" NPT female
- 1/4" BSP m x 1/4" NPT female
- 1/4" BSP m x 3/8" NPT female
- 1/4" BSP m x 1/2" NPT female
Set of thread adaptermetric + "Minimess"

Accessory:
Set of metric adapter and "Minimess® 1620", including suitabel O-ring seals for test item port of the pump
- 1/4" BSP m x M 12 x 1,5 female
- 1/4" BSP m x M 20 x 1,5 female
- 1/4" BSP m x Minimess® 1620 female
Reference gauge DS 63Accuracy ±1.0% FS

Accessory:
Analog reference pressure gauge
DS 63, accuracy ±1.0% FS
LPP-MANO-0002: 0...2 bar/psi
LPP-MANO-0011: 0...11 bar/psi
LPP-MANO-0025: 0...25 bar/psi
LPP-MANO-0040: 0...40 bar/psi
LPP-MANO-0000: -1...0 bar/inHg
LPP-MANO-0039: -1...+39 bar/psi
Reference gauge DS 100Accuracy ±0.6% FS

Accessory:
Analog reference pressure gauge
DS 100, accuracy ±0.6% FS
LPP-MANO-0004-K06: 0...4 bar
LPP-MANO-0025-K06: 0...25 bar
LPP-MANO-0040-K06: 0...40 bar
LPP-MANO-0000-K06: -1...0 bar
LPP-MANO-0039-K06: -1...+39 bar
Maintenance kit for LR-Cal LPP 40

Spare part:
Maintenance set with
circlip, sealing washers, countersunk screws, quad ring and O-rings
Pressure test hosewith 1/4" BSP F port

Spare part:
Assembly
Test item connection hose with test item connection 1/4" BSP female free-running internal thread.
The following lengths are available:
LPP-SCHLAUCH-S-0050: 0.50 m
LPP-SCHLAUCH-S-0075: 0.75 m
LPP-SCHLAUCH-S-0100: 1.00 m
LPP-SCHLAUCH-S-0150: 1.50 m
LPP-SCHLAUCH-S-0200: 2.00 m
LPP-SCHLAUCH-S-0250: 2.50 m
LPP-SCHLAUCH-S-0300: 3.00 m
LPP-SCHLAUCH-S-0500: 5.00 m
Reference pressure port1/2" BSP female

Spare part:
Assembly reference device connection with 1/2" BSP free-running female thread
Reference pressure port1/4" BSP female

Spare part:
Assembly reference device connection with 1/4" BSP free-running female thread
Fine adjustment andrelief valve

Spare part:
Assembly
Fine adjustment and pressure relief valve




