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© Valeport Limited 

M

IDAS

 WLR Hardware Manual 

Page 6 

0730877D.doc 

2.2  MECHANICAL SPECIFICATIONS 

Materials 

Housing:

 

Titanium or acetal, as ordered 

Exceptions:

 

Temperature sensor is titanium. 

Cage: 

Stainless steel (316 grade) with polypropylene clamping brackets

 

Dimensions:

 

Instrument - 88mm Ø, 550mm long (including connector) 

Cage – 750mm long x 140mm x 120mm 

Weight (in cage):

  11.5kg (air), 8.5kg (water). 

Depth Rating:

 

Acetal 500m (unless smaller pressure sensor fitted) 

Titanium 6000m (unless smaller pressure sensor fitted) 

 

Connectors 

Instrument:

 

10 pin female Subconn bulkhead type (MCBH10F) with lock ring. 

Comms Cable:

 

Valeport 3m Y lead.  10 pin male Subconn line type (MCIL10M) to 

instrument, 2 x 4mm bunch pins to external power, 9 pin female D 

type to PC. 

Switching Plug:

  10 pin male Subconn line type (MCIL10M), with lock ring.  Note 

that the switch cap contains wiring links to activate the instrument 

It is not a dummy plug.

 

 

2.3  PERFORMANCE SPECIFICATIONS 

Memory:

 

16Mb solid state memory (upgradeable in 16Mb steps to 64Mb) 

Internal Power:

  8 x 1.5v alkaline C cells.  The unit will accept 8 x 3.6v Lithium C 

cells with no alterations required.  Do not mix battery types. 

External Power:

  Between 9 and 30v DC.     

Current Drain:

 

25mA at 12v when running, and 0.25mA when in sleep mode. 

Sampling Rate:

  1, 2, 4 or 8Hz (synchronised) 

Data Output:

 

RS232, RS485 or RS422, depending on pin selection.  Baud rate 

is user selectable from 2400 to 460800 

Summary of Contents for MIDAS WLR

Page 1: ...served to the Company This document must not be copied reprinted or reproduced in any material form either wholly or in part and the contents of this document and any method or technique available the...

Page 2: ...Valeport Limited MIDAS WLR Hardware Manual Page 2 0730877D doc...

Page 3: ...mory 7 A Note About Removable Memory 8 2 4 2 Based on Batteries 9 A Note About Rechargeable Cells 10 3 INSTALLATION 11 3 1 Communications With PC 11 3 2 Deploying the MIDAS WLR 12 3 2 1 Real Time Oper...

Page 4: ...l Transit case In addition the following components may be supplied as optional extras RS485 communications adaptor RS422 communications adaptor Bluetooth communications adaptor 19200 baud only FSK mo...

Page 5: ...ure Type Temperature Compensated Piezo Resistive Sensor Range Various available 10Bar approx 100m water depth to 600Bar approx 6000m water depth Precision 0 01 Full scale 1cm for 10Bar sensor 0 6m for...

Page 6: ...Valeport 3m Y lead 10 pin male Subconn line type MCIL10M to instrument 2 x 4mm bunch pins to external power 9 pin female D type to PC Switching Plug 10 pin male Subconn line type MCIL10M with lock rin...

Page 7: ...8Hz Memory used per second is 8 x 6 bytes 48 bytes Total memory fitted is 16 777 216 bytes Seconds before memory full is 16 777 216 48 approx 349 500 seconds This is equivalent to 97 hours This perio...

Page 8: ...to get the memory card out All memory cards are susceptible to ESD shock static electricity while being handled We take the view that the value of your data means it shouldn t be exposed to the possi...

Page 9: ...ity of 7 2Ah and will be 95 efficient total available charge 6 8Ah Continuous data sampling 8Hz At 12v the instrument draws 25mA when sampling Total charge available is 5850mAh Number of hours availab...

Page 10: ...lst this risk is small it does exist and therefore must be considered The risk could be overcome by adding an air vent to the housing but this could compromise the water tight nature of the housing Be...

Page 11: ...a 9 way D type connector which should plug directly into a spare communications port on the back of the PC If non RS232 communications are to be used via the optional RS485 RS422 or FSK methods then...

Page 12: ...for other cable types Connect the top end of the cable to a PC using the appropriate method as described above 3 2 2 SELF RECORDING OPERATION For self recording only deployments the instrument is swi...

Page 13: ...been recovered Remove any significant growth from the instrument A high pressure water jet or stiff not metal brush is suitable a hard toothbrush is ideal Remove any significant growth from the press...

Page 14: ...laced if necessary 4 1 CHANGING BATTERIES The MIDAS WLR accepts 8 x C cells of either 1 5v alkaline or 3 6v Lithium type These cells are arranged in series so the output voltage is 12v alkaline or 28...

Page 15: ...Replace the batteries 6 Check the condition of the bore seal o rings and apply a light coating of silicon grease Ensure that both they and the anti extrusion rings sit in the groove correctly and are...

Page 16: ...ified by the last 4 digits of the o ring code number O ring size 200 143 4470 Anti extrusion ring size 143 titanium housing only 4 2 1 O RINGS To help preserve the watertight nature of the equipment p...

Page 17: ...ance and are distinguishable from the o ring itself by having a square cross section with a single concave surface as illustrated These rings should be fitted into the o ring groove on the dry or low...

Page 18: ...GREEN GREEN 5 link to 1 6 8 9 RS232 Ground SCREEN SCREEN SHELL 10 YELLOW Internal Battery Enable Link to RS232 Ground 5 3 3M SWITCHED Y LEAD RS485 RS422 10 Way Male Subconn 3m Blue Polyurethane Cable...

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