The Teledyne ISCO Type 801 EM Current Meter, 2 m Wading Set (604480210) is a handheld electromagnetic instrument for measuring water velocity in open channels. Its compact flat sensor measures from -5 to +5 m/s and is supplied with a logging Control Display Unit, 2 m sensor cable, sectional wading rod and PC interface equipment.
Key Features
- Wide bidirectional velocity range, measuring water movement from -5 to +5 m/s
- High measurement accuracy, specified as ±0.5% of the reading plus 5 mm/s
- Low zero drift, remaining below 5 mm/s under the stated operating conditions
- Compact flat electromagnetic sensor, suited to open channels, shallow flows and confined measurement locations
- Minimum operating depth of 5 cm, supporting measurements where water levels are limited
- Small sensing volume, approximately 20 mm in diameter and 10 mm high
- One-second data updates, with real-time velocity shown at a resolution of 1 mm/s
- Adjustable averaging from 1 to 600 seconds, supporting fixed, moving and free-running averaging modes
- Measurement confidence information, displaying real-time speed, averaged velocity and standard deviation
- Internal storage for up to 999 averaged readings, allowing field measurements to be recorded before transfer
- PC data extraction included, using the supplied RS232 interface lead and licence-free CDUExpress Windows software
- Sectional 1.5 m wading rod, comprising three graduated 0.5 m sections with a base and direction knob
- Portable battery-powered CDU, sealed to IP67 and capable of up to 37 hours of operation using eight alkaline C cells
- Complete field package, supplied with the sensor, logging CDU, wading rod set, interface cable, operating manual, canvas rod bag and ABS transit case
Note: The system is factory calibrated by Valeport at speeds up to 1 m/s. Measurements above 1 m/s use linear extrapolation unless a specific high-speed calibration is arranged.
Benefits
- Enables direct field measurement of water velocity while the operator stands within the channel.
- Supports shallow-water and confined-space work through the sensor's small sampling volume and low minimum depth.
- Improves confidence in variable flow measurements by displaying averaged results and standard deviation.
- Reduces manual recordkeeping through internal data storage and PC-based result extraction.
- Allows the averaging method and period to be adapted to changing or turbulent flow conditions.
- Provides a transportable measurement package with protective cases and a sectional wading rod.
Why Choose the Teledyne ISCO Type 801 EM Current Meter, 2 m Wading Set (604480210)?
The Model 801 EM combines bidirectional electromagnetic velocity measurement, shallow-flow capability and field data logging in a complete handheld wading package. John Morris Group can assist with instrument selection, additional wading rod sections, calibration requirements and replacement Type 801 accessories.
