Valeport BFM 108 MkIII Current Meter

Available as:
  • Rental
  • Sale (ex rental)

Valeport BFM 108 MkIII Current Meter – Available for rental, hire and ex-rental purchase from Ashtead Technology.

A direct reading, vector averaging current meter with surface readout unit and 200m cable. The unit can also be operated via a short lead, over an ROV umbilical. The Model has been developed to meet the needs of oceanographers, hydrographers and surveyors. Speed and Direction sensors are fitted as standard, with optional Conductivity, Temperature and Depth sensors.

Data Acquisition - The vector average is based on a 5 second period during which impeller counts are measured and a single mass compass reading is made, and the vector average is built up over the averaging period set. Averaging period is any multiple of 5 seconds, up to a maximum of 30 minutes. For the optional parameters, the sample is taken at the end of each sample period, and averaged over the averaging period. Real time display is updated at the end of each averaging period.

Key features

  • Low power consumption allows for extended deployment periods
  • Titanium construction gives excellent durability
  • Depth Rating 2000 metres

Technical specifications

SENSORS
Speed
TypeImpeller [0.27m pitch x 125mm ø]
Range0.03 to 5.0 m/s
Accuracy<0.15m/s, ±0.004m/s or >0.15m/s, ±1.5% reading
Resolution0.001m/s
Direction
TypeFlux gate compass [± 25º gimbal]
Range0-360º
Accuracy± 0.25º
Resolution0.25º
Temperature
TypePRT
Range-5 to 35ºC
Accuracy± 0.02ºC
Resolution0.002ºC
Conductivity
TypeInductive coils
Range0.1 to 60mS/cm
Accuracy± 0.05 ms/cm
Resolution0.003mS/cm
Pressure
TypeStrain Gauge
Range100, 200, 500 or 1000 dBar
Accuracy± 0.1% FS
Resolution0.005% FS
COMMUNICATIONS
RS232Standard, up to 100m cable direct to PC
Digital Current LoopStandard fit, used by 8008 CDU, this is a 2 wire method suitable for real time communications over cable lengths up to 3000m (requires an ad
SOFTWARE
SoftwareSupplied with Valeport's own Windows based DataLog software, which allows the user to set up intrument sampling regime and display data.
CONTROL DISPLAY UNITUsed in real time with Valeport's 8008 Control Dsiplay Unit (CDU). This features an LCD grpahics display of all parameters and allows full s
Power8 x 1.5v "C" cells (also powers instrument)
ProtectionIP67 (10 secs @ 0.3m)
POWER
External10 - 18vDC, <1W. May be taken from 8008 CDU
PHYSICAL
Depth Rating2000m
MaterialsTitanium & Acetal
Suspension100kg

Dimensions

Descriptionmminchkglbs
Unit76mmÿ x 880mm3ÿ x 34.6""11kg24.2lbs
CDU244 x 193 x 94mm13.5 x 7.6 x 3.7",2kg "4.4lbs
Shipping950 x 430 x 480mm (inc 50m cable and CDU)37.4 x 17" x 18.9""40kg88.2lbs