Hot/Cold Liquid Turbine Flow Meter
Model CWM / HWM
Woltman turbine water meter for hot or cold water in DN50–DN600 pipelines, with a vacuum-sealed dry-dial register, magnetic drive, low head loss and a removable measuring element; versions for 0 … 50 °C and 0 … 90 °C.
- Brand
- Bont Technologies
- Category
- Flow Meter, Turbine Flow Meter
Overview
About the Hot/Cold Liquid Turbine Flow Meter CWM / HWM.
The hot/cold liquid turbine flow meter is a Woltman-type turbine water meter that measures the volume of cold or hot water passing through a pipeline. A turbine measures the velocity of the water; the volume is calculated mechanically from the known cross-section and shown in cubic metres on roller counters. In this horizontal-axis design the turbine shaft runs parallel to the pipe, and its rotation passes through a worm gear and a direct magnetic drive to a dry-dial register sealed from the water. The paddle-wheel form covers a wide measuring range with low head loss and starts measuring at small flows. Sizes run from DN50 to DN600.
Features
- Dry-dial register with magnetic drive
- Vacuum-sealed register keeps the dial free of condensation and the reading clear
- Resists water hammer and pollution
- Measures cold water (CWM, 0 … 50 °C) or hot water (HWM, 0 … 90 °C)
- Inlet and outlet bearings designed to withstand hydraulic thrust
How it works
- Turbine shaft parallel to the pipeline axis
- Rotation transmitted through a worm gear to the dry-dial counter
- Volume indicated on roller counters in m³
Benefits
- Large flow capacity with small pressure loss
- Removable element for easy installation and maintenance
- Meets or exceeds ISO 4064 class B-H
- Optional pulse emitter
Applications
- Water purification and desalination
- Water distribution networks
- Effluent treatment plants
- Industrial water lines
- Wastewater systems and sewage treatment plants
LKS supplies the hot/cold liquid turbine flow meter in Malaysia, with installation, calibration and after-sales support. Contact our engineers for sizing and a quotation.
Specifications
| Model | CWM (cold water) / HWM (hot water) |
|---|---|
| Measuring principle | Woltman turbine meter |
| Nominal diameter | DN50 … DN600 (2" … 24") |
| Medium temperature | 0 … 50 °C (cold) / 0 … 90 °C (hot) |
| Water pressure | ≤ 1.0 MPa (1.6 MPa on request) |
| Maximum permissible error | Lower zone Q1 ≤ Q ≤ Q2: ±5%; upper zone Q2 ≤ Q ≤ Q4: ±2% |
| Metrological class (Q3/Q1) | R50, R63 (DN50–DN100); R80, R100 (DN125–DN300); R50 (DN350–DN600) |
| Commonly used flow Q3 | 25 m³/h (DN50) … 4000 m³/h (DN600) |
| Register | Dry dial, magnetic drive, units m³ |
| Minimum reading | 0.001 m³ (DN50–DN100), 0.01 m³ (DN125–DN300), 0.1 m³ (DN350–DN600) |
| Process connection | PN16 flange |
| Body material | Cast iron |
| Length | 200 mm (DN50) … 800 mm (DN500); 500 mm (DN600) |
| Standard | Meets or exceeds ISO 4064 class B-H |
| Options | Pulse emitter |
Lifecycle support
Installed, calibrated and maintained.
With more than two decades in valves and instrumentation across a diverse range of industries, we keep instruments accurate and valves healthy, because valve health management is vital for plant safety.
- Installation & commissioning
- Calibration & testing
- Maintenance & overhaul
- Dismantling & replacement
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