OSSB1 Universal Current MeterOSSB1 Universal Current MeterOSSB1 Universal Current MeterOSSB1 Universal Current MeterOSSB1 Universal Current MeterOSSB1 Universal Current Meter
OSSB1 Universal Current Meter

OSSB1 Universal Current Meter

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The OSSB1 universal current meter is a field-proven instrument for measuring the velocity of water in open and closed channels. It is used for point measurement of flow velocity in vertical profiles and covers a flow velocity range from 0.025 to 10 metres per…  Read more

Brochure
Fan / Propeller Specifications (The choice of fan/propeller depends on the specifics of the site such as discharge and the geometry of the riverbed or channel. Please contact us for advice.)
Fan No. Diam. x Pitch Start Velocity (m/sec) Max. Velocity (m/sec) Component Effect
A 100 mm x 0.125 m 0.025 5 +/-45 °
1 125 mm x 0.250 m 0.025 10 +/-5 °
2 125 mm x 0.500 m 0.040 10 +/-5 °
4 80 mm x 0.125 m 0.025 4 +/-5 °
Calibrated Accuracy +/-1 % (stated accuracy will only be maintained when serviced and calibrated regularily)
Calibration
  • Each current meter individually calibrated in accordance with ISO 3455: 2021 
  • Compliant with AS 3778.6.1-2022 and ISO 2537:2007 
  • Calibration certificate provided with each current meter
Scope of delivery (basic kit)

In durable waterproof carrying case: 

  • OSS-B1 Body assembly
  • OSS-B1 counter connecting lead
  • Body key
  • Propeller type A
  • 2x screwdrivers (short and small)

Spare parts kit including: 

  • 2x spare bearings SC058-12
  • 1x O-ring SC024-09 for contact cover
  • 1x O-ring SC024-12 for propeller carrier
     
  • 1x O-ring SC024-11 for body/contact cover 
  • 1x O-ring SC024-14 for connecting lead
  • 1x reed switch assembly
  • 1x cleaning container 
  • 1x ground post to suit a propeller 
  • 1x 250 ml bottle of oil 
  • Rating tables 

In canvas carrying bag: 

  • 1x Wading Rod Set 1.8 m long 

in 3 Sections (3 × 0.6 m), Ø 20 mm
Packed Dimensions & Mass (basic kit)
  • Kit in carry case: 500 x 400 x 200 mm; 8 kg
  • Wading rods (1.8 m in canvas carry bag): 700 x 100 mm; 2 kg
Accessories
  • Current Meter Counter: PVD200
  • Fans: type 1, 2 and 4 (for details see above)
  • Tail Fin Stem Assembly
Accessories must be ordered separately. Please contact us for further information.
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    OSSPC1 Miniature Current Meter

    …

The OSSB1 universal current meter is a field-proven instrument for measuring the velocity of water in open and closed channels. It is used for point measurement of flow velocity in vertical profiles and covers a flow velocity range from 0.025 to 10 metres per second.

The OSSB1 is made from durable corrosion resistant stainless steel and it is suitable for use in the most extreme environments. It has been designed for lifetime trouble-free operation under normal use and when properly maintained.

The OSSB1 can be deployed from

  • a standard 20 mm diameter wading rod (rods are provided in a standard kit)
  • a boat or bridge using a single drum gauging winch (e.g. WS250) and winch board (e.g. SAN22SS)
  • a bridge using a single drum gauging winch (e.g. WS250) and bridge crane (e.g. 3WBC or 4WBC)
  • a cableway using a double drum winch or Hornet Plus system with a suitable gauging weight

The current meters are modular systems: You can tailor the perfect solution for your application with a choice of several fans, rods, accessories, etc. For example, with the optional tail fin assembly directional stability during suspended measurements is controlled. The full range of equipment needed for successful stream gauging is available from KISTERS.
Please contact us for advice!

Alternative Model for Shallow Waters

KISTERS’ miniature current meter OSSPC1 is used for point measurement of flow velocities for discharge calculation in wadeable flowing water.

  • Corrosion resistancy:
    • Body: polished stainless steel
    • Fans: polished stainless steel and hand balanced
  • Precise and reliable measurements: Encapsulated magnetic reed switch ensuring reliability and a ‘clean’ contact signal
  • Direct results: Velocity displayed directly with KISTERS’ counters CMCsp, CMC20A, PVD200, or with the paperless stream gauging tablet application HydroTab
  • Easy deployment on standard wading rods (supplied with the basic kit) or single drum gauging winches

The OSSB1 is especially suitable for manual discharge measurements from low flow (i.e. wadable streams) to high flow (i.e. flood conditions). Thanks to its low start velocity of only 0.025 m/s, the OSSB1 shows correct results even in very slow flowing channels.