Condensate / Water Flow Meter
Orifice Plate Based Water Flow Metering System — complete assembly with impulse piping, manifold, transmitter & totalizer
Condensate / Water Flow Meter
The Orifice Plate Water Flow Metering System is a complete, ready-to-install differential pressure (DP) flow measurement package designed for accurate and reliable measurement of water and other clean or lightly contaminated liquids. Operating on the Bernoulli principle, a precision-machined orifice plate installed in the flow line generates a differential pressure proportional to the flow rate, which is transmitted and displayed through a fully engineered impulse piping and instrumentation assembly.
The scope of supply covers the entire measurement loop as a single, coordinated package — from the primary element through to final flow indication. This includes the orifice plate assembly, root valves mounted directly at the tapping points, impulse tubing, tube fittings/connectors, a 3-valve/5-valve manifold for transmitter isolation and calibration, a DP transmitter, and a flow totalizer/indicator for local rate and totalized volume display. Supplying the complete assembly as a pre-engineered package ensures correct component sizing, compatible materials of construction, and proper impulse line routing — reducing site engineering effort, minimizing installation errors, and ensuring the integrity of the DP signal from tap point to readout.
This complete system approach simplifies procurement, installation, and commissioning for EPC contractors and end users, while ensuring consistent measurement accuracy and long-term reliability.
Specifications
- Eccentric / segmental orifice options for condensate with entrained impurities.
- Venturi tubes for high turndown and low-loss feed-water measurement.
- Air-vented manifold mounting to keep impulse lines liquid-filled and accurate.
- Hydrostatic testing and EN 10204 3.1 material certification on request.
Technical specifications.
| Parameter | Specification |
|---|---|
| Metering principle | Differential pressure, orifice-based (ISO 5167-2 / ASME MFC-3M) |
| Service | Process / raw / cooling / utility water |
| Line size | DN25 – DN600 (1"–24") |
| Output | 4–20 mA with HART, pulse or Modbus RTU + totalizer |
| Supply | Complete loop: orifice, root valves, tubing, manifold, transmitter, totalizer |
| Measuring principle | Differential pressure; Bernoulli’s principle (ISO 5167-2 / ASME MFC-3M) |
| Fluid type | Water (process / raw / cooling / utility water) |
| Line size range | DN25 to DN600 (1" to 24") — customizable |
| Orifice plate material | SS316 / SS316L (standard); other alloys on request |
| Tapping type | Flange tap / corner tap / D & D/2 tap |
| Design pressure | Up to 100 bar (g) |
| System accuracy | ±1% to ±1.5% of reading (overall, application dependent) |
| Repeatability | ±0.1% |
| Rangeability | Up to 4:1 |
| Output signal | 4–20 mA with HART, pulse, or digital (Modbus RTU) |
| Enclosure protection | IP65 / IP67 |
| Area classification | Weatherproof / flameproof (Ex d) — as per Ex requirement |
Key features engineered in.
- Complete DP flow measurement package — single-source scope of supply
- Orifice assembly, root valves, impulse tubing, manifold, transmitter & totalizer engineered as one coordinated system
- Correctly matched component sizing and materials across the full measurement loop
- Reduces site engineering, procurement coordination, and installation errors
- Simplified commissioning — pre-defined impulse line routing and tubing layout
- Suitable for new installations and retrofit projects
- Low maintenance with long-term measurement stability
Applications we serve.
- Process and utility water flow measurement
- Cooling water circuit monitoring
- Raw water intake and treatment plant metering
- Water balance studies and audits
- Boiler feed water measurement
- Skid-mounted or package unit metering requiring complete loop supply
Need help with your flow measurement challenge?
Share your fluid properties, line size, flow rate and operating conditions � our engineers respond with sizing, drawings and a quotation.