CP-Compact-EXPERT
Compact prover
CP-Compact-EXPERT
Fast and accurate proving and calibration of flow meters: turbine, vortex, electromagnetic, Coriolis and ultrasonic. Stationary and mobile versions, dynamic range up to 1000:1.
up to 1000:1dynamic range
< 10,000pulses per pass
2versions: stationary and mobile
Specifications
Operating principle and design
The CP-Compact-EXPERT compact prover is based on the displacement of a known volume of liquid through the calibrated section of the measuring cylinder between two optical detectors. Thanks to the pulse interpolation algorithm, a proving run is completed in less than 10,000 pulses per pass — with a smaller calibrated section volume than its analogues.
The unique design makes it possible to build a fast automatic proving system for turbine, vortex, electromagnetic, Coriolis and ultrasonic liquid flow meters.
- Proving in less than 10,000 pulses per pass
- One prover — for flow meters of different sizes and measuring points
- Mounting on a truck or trailer — any model
- Compatible with Emerson proving systems
Compact prover CP-Compact-EXPERT
Design
Solutions for high-accuracy verification and calibration across all application areas
The CP-Compact-EXPERT compact prover consists of a measuring tube with a floating piston and a coaxially arranged poppet valve. The poppet valve is located inside the piston and connected through a drive shaft to the piston drive unit. The piston is acted on by the force of the hydraulic system and the pressure of the pneumatic spring.
During a measurement cycle the poppet valve closes and the flow moves the piston by one calibrated volume. With pulsating flow or varying back pressure, it is important to keep the valve closed throughout the measurement cycle — this is ensured by the pneumatic spring system filled with nitrogen. It operates reliably even under significant pulsations.
The hydraulic system opens the poppet valve, returns the piston to its initial position and keeps the valve open — in the initial position the liquid flows through the prover freely.
Compact prover CP-Compact-EXPERT and its components.
Optical detectors
The calibrated volume of the cylinder is defined by removable optical detectors: the actuation reproducibility is ±0.0003 inch (0.0076 mm). This resolution is ensured by precision components and special materials. There are three detectors: one determines the initial piston position, the other two determine the boundaries of the displaced volume. The detector signals control the timers of the prover electronic unit.
Optical detector unit on the measuring cylinder and the operating principle.
Specifications
Compact prover parameters
The model range includes seven sizes with measuring section capacities from 20 to 650 dm³.
Model range and technical data of the CP-Compact-EXPERT compact prover
| Model designation | CP200 | CP300 | CP400 | CP500 | CP600 | CP800 | CP1000 |
|---|
| Nominal capacity of the measuring section, dm³ | 20 | 40 | 80 | 120 | 250 | 400 | 650 |
| Parameter | Value |
|---|
| Relative error, % | ±0.05 |
| Standard deviation, % | 0.02 |
| Seismic resistance | 9 points per MSK-64 scale |
| Maximum flow rate, m³/h | from 60 to 4000 |
| Min / max flow ratio | 1:1000 |
| Version | stationary, mobile |
| Measured medium | oil per GOST R 51858-2002, crude oil, petroleum products, liquefied gases, chemicals, industrial liquids, water |
| Pressure, MPa, not more than | 16 |
| Explosion protection marking | 1ExdIIBT4Gb |
| Medium temperature, °C | from minus 40 to plus 95 |
| Ambient temperature (standard version), °C | from minus 5 to plus 40 |
| Ambient temperature (special version), °C | from minus 60 to plus 40 |
| Power supply parameters | AC voltage 50±1 Hz: 230±10 %; 400±10 % |
| Average service life, years | 20 |
Specific values of the ordered configuration are stated in the product passport.
Advantages
Why it is worth considering
Proving at every transaction
Thanks to the speed and simplicity of the procedure, proving or calibration can be performed at every transaction.
Stationary and mobile versions
The compact prover is available in stationary and mobile versions — a flexible solution for proving flow meters installed in pipelines, and the best choice for proving combined with engineering.
Compact size and wide range
Small dimensions and weight allow mounting any model on a truck or trailer. Dynamic range up to 1000:1 — flow meters of a wide range of sizes are proved by the same prover.
- Small calibrated volume of the measuring section
- Lower uncertainty of the calibrated volume compared to conventional ball provers
- Proving by the transfer standard method
- Proving at multiple volumes
- Fast leak detection
- Fully sealed self-contained unit — no evaporation
- No external moving parts — mechanically safe operation
- Enhanced operator protection
- High durability
Applications
Where it is used
The CP-Compact-EXPERT compact prover is a flexible solution for any task that requires flow meter proving:
Distribution oil terminals
Crude oil and product pipelines
Floating production, storage and offloading systems
Ship and barge loading/unloading
Railcar loading/unloading
Calibration laboratories
Photos
Assembly and versions
Factory assembly, the finished unit before shipment and the mobile version on a trailer.
Accessories
Boards of our own design, fully compatible and interchangeable with Emerson prover boards.
Interface board
Interface board (24V) for the compact prover
A reliable and accurate element of the compact prover control system: it provides uninterrupted communication between the mechanical part of the prover and the workstation, processing critical signals.
- Stable 24V power supply (±15%) — improved noise immunity
- Processing of key signals from the optical piston position detectors
- Cycle control: proving run start, piston return
- Computer interface: RUN, UPSTREAM, DETECTOR signals
- Reliable design: built-in fast-acting fuse
- Interference and overvoltage protection of input and output interfaces
Purpose: installation in the prover control cabinet. A mandatory component of a modern accurate proving system. Fully compatible and interchangeable with the interface board of Emerson provers.
Divider board
Divider board PNN-1500K
Detector signal divider module. Connects the signal from the combined compact prover detectors to two separate controller inputs: detector 1 input "Start" and detector 2 input "Stop".
- Stable 24V power supply (±15%)
- Signal processing of the interface board, piston position detection
- Cycle control: two separate signals — "Start" and "Stop"
- Reliable design: built-in fast-acting fuse
Purpose: computing complexes, integrated automation systems and compact prover control systems. Fully compatible and interchangeable with the board of Emerson provers.
Need a compact prover for your application?
We will send a quotation and help you choose the version and configuration.
