For enhanced functionality, the sensor can be equipped with an optional pressure cell for automatic level measurement and precise sensor positioning, further increasing its versatility and accuracy. When the sensor is placed in flowing water, it generates a magnetic field that creates a voltage detected by electrodes embedded within the sensor. The voltage, which is proportional to the water velocity surrounding the sensor, is processed by the smart sensor’s microprocessor and digitally transmitted through the cable to a portable meter display, such as the FH950, which is sold separately.
Available in two versions—one that measures velocity only, and another that measures both velocity and level—the EM950 sensor is a robust solution for a wide range of applications.
Available with either Velocity or Velocity and Level capabilities, the EM950 electromagnetic sensor has no moving parts and never requires mechanical maintenance, making it one of the lowest maintenance solutions on the market
With an innovative and compact sensor shape with intelligently-designed flow characteristics, the EM950 sensor delivers reliable measurements at low velocities, in very shallow water, and in turbulent flow conditions. It even takes accurate readings in sediment, weed or organic debris-choked water. Plus, with an optional pressure cell for automatic level measurement and sensor positioning, the Hach EM950 sensor with FH950 hand-held meter is known for having as much brain as it has brawn.
Compact and ergonomically shaped, making it easier to install in tight spaces and less prone to clogging or buildup
The sensor maintains its accuracy and reliability, especially in environments with challenging flow conditions, such as wastewater or industrial processes.
| Accuracy | ± 2% of reading ± 0.05 ft/s (± 0.015 m/s) through the range of 0 – 10 ft/s (0 – 3.04 ms/s); ± 4% of reading from 10 – 16 ft/s (3.04 – 4.87 m/s) |
|---|---|
| Cable Length | Options from 6.5 to 100 ft |
| Probe Type | Velocity |
| Range | 0 – +20 |
| What's included? | 1 each portable velocity/depth sensor |
| File Name | Category | Language | Size | Date | Edition | |
|---|---|---|---|---|---|---|
| FH950 Handheld Flow Meter | Data Sheets | English US | 2 MB | 2024-09 | Sept24 | |
| Basic User Manual: FH950 | Manuals | English UK, German, French, Italian, Portuguese, Spanish | 2 MB | 2025-08 | Ed11 | |
| User Instructions : FH950 Adjustable Meter Mount | Manuals | English US, English UK | 603 KB | 2024-10 | Ed3 | |
| User Instructions : FH950, EM950 Support Brackets | Manuals | English UK, English US | 368 KB | Ed2 | ||
| User Instructions, MF PRO, EM950 Support Brackets | Manuals | English UK, English US | 359 KB | Ed1 | ||
| User Instructions: EM950.XXXX – FH950 Sensor Mount | Manuals | English US, English UK | 281 KB | 2024-10 | Ed4 | |
| Basic User Manual: FH950 (English US) | Manuals | English US | 2 MB | 2025-08 | Ed11 |
1 each portable velocity/depth sensor
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