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Model 108 MkIII Direct Reading Current Meter

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The Model 108 MkIII is the third generation of the successful Valeport 108 direct reading current meter, and 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. Full control and set up of the 108 MkIII and viewing of data is achieved directly via the customer's PC with Valeport's DataLog™ software or the Model 8008 Control Display Unit.

Configurations available for use from hand held measurements in the smallest streams, through experiments in the laboratory, to self-contained instruments for navigable rivers and estuaries

The Model 108MkIII and 308 are impeller based current meters measuring speed and direction, which can also have Conductivity, Temperature and Pressure parameters fitted. From these additional parameters Salinity, Density and Speed of Sound are calculated. The system is modular and instruments can be upgraded if desired.

The Model 108MkIII is a direct reading only instrument. The Model 308 is a self recording instrument, which can also be used simultaneously for real time measurements. Both units can be used directly with a PC or with the optional Model 8008 Control Display Unit. This unit has 3 data communication methods built in which offer considerable flexibility for configuration and use with a wide number of cable types and lengths.

Sampling and averaging periods are set up using a PC or 8008 CDU, and the set up is retained until overwritten. Calibration for all sensors is held within the instrument and data is provided in engineering units.

Power may be taken from its internal batteries [308 only], from the 8008 CDU or from a surface battery or power supply.

Self recording units have 128 kbyte memory as standard [1Mbyte optional]. The 128 kbyte memory can store 30,000 speed and direction records [or 12,000 speed/direction plus CTD records].

Ordering Information:
0108001 Direct reading, vector averaging current meter, speed and direction only, Control display unit with logging facility and interface cable to PC, 50m cable on hand reel, 3m deck lead, set of spare o-rings, tools, operating manual and a system transit case.

0108002 Direct reading, vector averaging current meter, speed and direction only, Control display unit with logging facility and interface cable to PC, 100m cable on hand reel, 3m deck lead, set of spare o-rings, tools, operating manual and a system transit case.

0108003 Direct reading, vector averaging current meter, speed and direction only, Control display unit with logging facility and interface cable to PC, 200m cable on hand reel, 3m deck lead, set of spare o-rings, tools, operating manual and a system transit case.

Additional Sensors
0300003 Pressure - 0.1% accuracy -specify range required (100, 200, 500 or 1000 decibar)
0300004 Temperature - PRT
0300006 Conductivity

Communications Options
0300EA4 3m "Y" lead, instrument to PC/ power supply. Use for RS232 comms to PC with up to 100m cable.
0300025 Digital Current Loop interface set, comprising Digital Current Loop adaptor, 3m Deck lead, external DC cable and interface lead to PC. Use for comms direct to PC with up to 6000m cable.
0300023 Control Display Unit set, comprising display unit, 3m Deck Lead, and interface lead to PC.
0300014 External AC/DC power supply adaptor (for use with Display Unit, 3m Y lead, RS485 adaptor or Digital Current Loop adaptor)

Model 108 MkIII Components and Spares
0108010 Direct reading fish, speed & direction only (1500)
0108011 Deep water direct reading fish, speed & direction only (2500m, Subcon connector fitted)
0300EA50CD 50 metres cable on hand reel
0300009 100 metres cable on hand reel
0300021 200 metres cable on hand reel
0150047 Additional cable (price per metre)
0300010 Deck lead, 3m long
8008001 Control display unit
8008EA2 Interface cable - display unit, current loop adaptor or RS485 adaptor to PC
TK0108/308 Set of tools for current meter (Impeller spanner, hexagonal key and screwdriver)
0108009 Set of O-rings for current meter
TC970 Transit case
0300037 Digital Current Loop adaptor
0300EA3 External DC cable
0001005 Impeller complete with nose-cone
0001006 Impeller shaft complete with nuts and washers
0108012 Reed Switch
0300039 Impeller guard assembly
0300020 Spare M5 titanium screws (price each)
0108008 Suspension assembly (complete)
0108013 Suspension clamp
0108014 Suspension clamp pin
0108015 Suspension assembly swivel
0300075 Tail fin tube
0300017 Set of tail fins (loose)
0308017 Vertical Tail fin
0308018 Horizontal Tail fin
0308019 Pair of horizontal fin clamping blocks
0308015 Tail fin lock ring
0308016 Tail fin securing o-ring
8008002 Battery Cover for CDU (yellow screw fit type)
8008024 Battery Cover for CDU (black push fit type)
8008027 Black Bezel
8008510 8008510 Battery pcb for 8008
8008512 8008512 Battery pcb for 8008
PB8008518 CDU micro board
CD100 50m/100m cable drum
CD200 200m cable drum
0150022 Bulkhead connector (current meter)
0150042 Bulkhead connector (cable reel)
0150021 Subsea cable connector (used on both cable to current meter and deck cable to cable reel)
0150044 Protective cap for bulkhead connector
0150043 Protective cap for cable connector
0300040 Spare reedswitch for Model 108 / 308