Two of the most common flow technologies in process plants are the Coriolis mass flowmeter and the electromagnetic (mag) flowmeter. They solve different problems: Coriolis measures mass directly and works with gases, while electromagnetic measures volume and only works with conductive liquids. This guide compares the Endress+Hauser Promass F 100 and Promag P 100 to help you choose.
At a Glance: The Short Answer
Choose the Coriolis (Promass F 100) when you need mass flow, high accuracy (±0.10%) or gas/liquid/slurry measurement. Choose the electromagnetic (Promag P 100) when you measure conductive liquids (water, acids, slurries) and want a lower-cost, no-pressure-drop meter with ±0.5% accuracy.
Side-by-Side Comparison
| Feature | Coriolis (Promass F 100) | Electromagnetic (Promag P 100) |
|---|---|---|
| Measures | Mass flow (kg/h, direct) | Volumetric flow (m³/h) |
| Accuracy | ±0.10% mass | ±0.5% |
| Media | Liquids, gases, slurries | Conductive liquids only (>5 µS/cm) |
| Density & temperature | Measures both | No |
| Pressure drop | Small | None (full bore) |
| Cost | Higher | Lower |
| Best for | Custody transfer, batching, gas, high-value media | Water, wastewater, chemicals, slurries |
When to Choose the Coriolis (Promass F 100)
The Promass F 100 Coriolis Flowmeter is a high-accuracy mass flowmeter (±0.10% mass flow accuracy, integrated HART) that measures liquids and gases directly by mass. Choose it when:
- You need mass flow (kg/h or t/h) rather than volume — essential for batching, custody transfer and dosing.
- You measure gases, which electromagnetic meters cannot handle.
- You also need density and temperature as process diagnostics.
- The fluid value or accuracy requirement justifies the higher price.
When to Choose the Electromagnetic (Promag P 100)
The Promag P 100 Electromagnetic Flowmeter is a compact, full-bore meter (±0.5% accuracy, PTFE liner) for conductive liquids. Choose it when:
- Your fluid is conductive (water, acids, alkalis, slurries) — the only hard requirement.
- You want zero pressure drop across the meter.
- Budget favours a lower-cost volumetric meter.
Complementary Process Instruments
For a complete process loop, Glorient also supplies the full Endress+Hauser range:
- Cerabar PMC51B — pressure transmitter (±0.1%, HART).
- Micropilot FMR62 — 80 GHz radar level for harsh environments.
- iTHERM TM131 — Pt100 RTD temperature probe (−50 °C to +450 °C).
- Liquiline CM44 — multi-parameter liquid analyzer (pH, ORP, conductivity, DO).
Decision Guide
- Need mass flow or gas measurement? → Coriolis (Promass F 100).
- High-accuracy custody transfer / batching? → Coriolis (Promass F 100).
- Conductive liquid, budget-sensitive? → Electromagnetic (Promag P 100).
- Water / wastewater / slurry? → Electromagnetic (Promag P 100).
Get a Quote
Glorient supplies both Promass F 100 and Promag P 100, plus the full Endress+Hauser pressure, level, temperature and analyzer range. Send us your fluid, flow range and accuracy requirement and we will confirm the correct technology. Request a quotation and we will respond within 24 hours.