Alat Ukur Kecepatan Arus Air - Current Meter 106 Valeport

Alat Ukur Kecepatan Air Valeport Model 106 Lightweight Current Meter

Specifications

The Model 106 Current Meter is a light weight, cost effective impeller current meter, designed for real time current measurement or short to medium term autonomous deployments.  Titanium construction ensures durability, and the optional temperature and pressure sensors increase the versatility of the instrument. Ideal for use in rivers and coastal applications, or from small boats, the Model 106 is simple to use with either the Windows based PC software supplied, or an optional dedicated display unit.

Sensor 

Speed

Type

High Impact Styrene Impeller 

Size

125 mm diameter by 270 mm pitch 

Range

0.03 to 5 m/s

Accuracy

±1.5 % of reading above 0.15 m/s

±0.004 m/s below 0.15 m/s

Direction

Type

Flux gate compass

Range

0 to 360° 

Accuracy

± 2.5° 

Resolution

0.5°

Temperature

Type

Thermistor 

Range

-5 to 35 °C 

Accuracy

± 0.2 °C

Resolution

0.01 °C

Pressure

Type

Strain Gauge Transducer 

Range

50, 100, 200 or 500 dBar

Accuracy

± 0.2 % Range. 

Resolution

0.025 % Range

Data Acquisition

The current meter works on a basic 1 second cycle, during which the impeller counts are taken and a single compass heading reading is made. From this, East and North velocity vectors are calculated, which are then summed over the averaging period. The additional parameters of temperature and pressure ( if fitted ) are sampled once every sample period, and averaged over the averaging period.

Data Recovery

Direct to PC via communications port. Maximum RS232 data rate of 19200 baud.

Switching On/Off

The meters are switched on and off through software control, either by the DataLog™ software or by using the Model 8008 CDU. However, for autonomous, self recording operation the 106 is supplied with a subconn switch cap which fits in place of a direct cable connection.

The Model 106 may be used with a dedicated display unit for real time operations allowing instrument setup and data display.

Size

244 x 193 x 94 mm, 2 kg

Protection

IP67 ( 10 secs @ 0.3 m )

Memory

512 Kbyte Solid State Memory. Each parameter record uses 2 bytes. As an example, this gives a duration of over 1 week with full parameter sampling every 10 seconds, or 220 days with sampling every 5 minutes.

Power

Internal

1 x D cell.  1.5v alkaline cell gives approximately 30 days at 10 second sample rate, or 56 days at 5 minute sample rate.  3.6v Lithium cell gives approximately 90 days at 10 second sample rate, or 180 days at 5 minute sample rate.

External

For external supply, 12-20v DC is required. Power can also be taken from the Model 8008 CDU.

Communications

Fitted with Subconn MCBH10F ( Brass ) RS232 to PC over cable lengths up to 200 m.

Digital Current Loop to Model 8008 CDU, or to PC over longer cable

lengths ( requires additional adaptor ).

Physical

Instrument

Materials

Titanium, acetal and ABS plastic

Size

640 mm x 50 mm Ø, ( tail 133 mm wide x 270 mm high )

Weight

3 kg ( air ), 2 kg ( water )

Depth Rating

500 m

Shipping

Model 106 Size

84 x 42 x 39 cm

Model 106 Weight

17 kg

50 m Cable Size

42 x 33 x 49 cm

50 m Cable Weight

11 kg

Software

System is supplied with DataLog TM  Windows based PC software, for instrument setup, data extraction and display of tabular and graphical data plots.  DataLog  is license free.

Ordering

0106001SC             

Model 106 Self Recording/Direct Reading unit, fitted with speed and direction sensors. Supplied with communications lead ( 3 m Y lead ), switch cap, set of tools, operating manual, software and system transit case.

0106003SC             

As 0106001SC plus Temperature option

0106004SCXX        

As 0106001SC plus Depth option

0106005SCXX        

As 0106001SC plus Temperature & Depth option ( XX denotes pressure transducer range )

0105005SC             

Control Display Unit set, comprising deck lead and Model 8008 CDU.