Equipment  Aquatic Survey  Flow Meters 

Hach FH 950 Handheld Flow Meter

  • Measures depth and velocity
  • Real time velocity graphed on display
  • Lightweight rugged design
221887 | Availability: Expected dispatch within 3-4 days Details
NHBS Price: £5,360.00 inc VAT $6908/€5886 approx

About this product

The Hach FH 950 is lightweight, battery powered flow meter is designed to provide accurate velocity measurements in rugged field environments. Multiple user-friendly features designed into the FH950 allow you to quickly and easily determine stream velocities for required discharge measurements, calibrate area velocity flow meters, or verify primary devices such as weirs and flumes. The FH 950's ability to store and download velocity and entered depth information with the meter, minimizes field time. Discharge calculations are automatically calculated by the meter and collected data are downloaded to a PC via the USB connection, eliminating the need for labor intensive manual data transfer. The electromagnetic sensor has no moving parts and never requires maintenance. Turbulent, noisy and low velocities are easily metered. When the sensor is placed in flowing water, it's magnetic field creates a voltage that is sensed by electrodes embedded in the sensor. The signal is electronically processed by the smart sensor’s microprocessor and is digitally transmitted to the portable meter display. A 6.1m sensor cable is also included.



Method:  Electromagnetic
Accuracy:  ±2% of reading ±0.05 ft/s (±0.015 m/s) through the range
0 to 10 ft/s (0 to 3.04 m/s); ±4% of reading from 10 to 16 ft/s.
(3.04 to 4.87 m/s)
Zero Stability: ±0.05 ft/s (± 0.015 m/s)
Resolution: 0.01 value <100; 0.1 value <1000; 1.0 value ≥1000
Range: 0 to +20 ft/s (0 to +6.09 m/s)

Method Diaphragm type: Absolute pressure with single point calibration
Accuracy (static): The larger of ±2% of reading or ±0.504 in (0.015 m). Steady state temperature and static non-flowing water.
Range: 0 to 10 ft (0 to 3.05 m)
Resolution: 0.01 value <100; 0.1 value <1000; 1.0 value ≥1000
Minimum Water Level: 1.25 in (3.18 cm)

Material:  ABS, glass-filled
Environmental Rating: IP68
Dimensions of Sensor: (L) 119 mm x (W) 43 mm x (H) 63mm
Cable Material: Polyurethane jacketed
Cable Length: 6.1m

Portable Meter
Material: Polycarbonate with a thermoplastic elastomer (TPE) overmold
Environmental Rating: IP67
Dimensions: (L) 221.4m x (W) 94.3mm x (D) 53.8mm
Storage Temperature: -4 to 140°F (-20 to 60°C)
Operating Temperature: -4 to 131ºF (-20 to 55ºC)
Battery Charge Temperature Range: 32 to 104°F (0 to 40°C)
Battery Type: Lithium-Ion, rechargeable
Battery Life Gauge: 5 segment bar graph
Battery Life: 18 hours heavy typical day use†; 68°F (20°C) (†Defined as 30 minutes of set up, 6 one-hour periods of continuous use with sensor active and display at maximum brightness, 30 minutes of sleep mode between use periods, data download and power off.)
Battery Charger: AC wall outlet charger
USB Connector Type: Mini-B, 5-pin (rated to IP67 when capped)

Graphics Display: Color, LCD; 3.5" QVGA, transflective (readable in direct sunlight)
Measurement Resolution: 0.01 value <100; 0.1 value <1000; 1.0 value ≥1000
Keypad: Alpha-numeric
Operating Modes: Real-time, Profiling
Profiling Types: Stream, Conduit
Conduit Shapes: Circular, Rectangular, Trapezoidal, 2/3 Egg, Inverted 2/3 Egg
Stream Entries: Fixed, Non-Fixed Stations
Firmware: Sensor and portable meter firmware are field upgradeable via USB
Noise Rejection: User selectable 50Hz, 60Hz
Units of Measure: Velocity: ft/s, m/s, cm/s, mm/s Flow: ft3/sec, million gal/day, gal/day,gal/min,m3/sec, m3/min, m3/hour,m3/day, liters/s, liters/min Level: in, ft, m, cm, mm
Stream Flow Calculation: Mean-section, Mid-section
Diagnostics: Self test, keypad, display, event log
Conduit Profile Methods: 0.9 x Vmax, 0.2/0.4/0.8, velocity and level integrator, 2D
Stream Profile Methods: 1, 2, 3, 5 and 6 point (Velocity method - USGS and ISO)
File Types: Real-time, Profiling, Event Log
Profiles: Data storage for up to 10 profiles with 32 stations per profile.
Maximum Number of Real-Time Files: Three each with up to 75 readings captured by the user.
Language Support: English, Bulgarian, Chinese, Czech, Danish, Dutch, Finnish, French, German, Greek, Hungarian, Italian, Japanese, Korean, Polish, Portuguese, Romanian, Russian, Slovenian, Spanish, Swedish, Turkish.

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