Deep C Meter 300 AD™ operation manual Table of contents 1 Overview 2 Documentation 3 Health and safety 4 LED readout components 4.1 Deep C Meter 300 AD™ 4.2 Articulating mount 4.3 Flying leads 5 Probe unit components 6 ROV interface 7 Calibration 7.1 Deep C Meter AD calibration...
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Table 6 - Troubleshooting quick guide Table 7 - List of spare parts 1. Overview The Deep C Meter 300 AD is a complete ROV-interfaced cathodic protection monitoring system. The system comprises five basic parts: 1.1 LED readout Triple voltmeters housed in a Delrin pressure housing.
Deep C Meter 300 AD™ operation manual 1.6 The Deep C Meter 300 AD™ has the following upgrades from previous versions: • Smaller pressure housing • Combines ROV-II™ and Polatrak EFG pressure housing • Programmable ultra-bright LED displays with brightness adjustments •...
Deep C Meter 300 AD™ operation manual 4. LED readout components The readout unit has three major sub-assemblies: The pressure housing, articulated mount and flying leads. 4.1. Deep C Meter 300 AD™ 4.1.1. Pressure housing - The pressure housing is made from Delrin and is rated for water depths of 300 meters (1,000 feet).
Deep C Meter 300 AD™ operation manual 4.2. Adjustable mount 4.2.1. The adjustable mount is designed to secure the Deep C Meter 300 AD™ to the ROV frame and provide angled adjustment to optimize camera viewing of the displays. The mount and all fixing hardware are made of Delrin.
Deep C Meter 300 AD™ operation manual 5. Probe unit components The Deep C Meter 300 AD™ utilizes the popular Polatrak ROV-II™ tip contact probe. More detailed information can be found in the ROV-II operation manual Doc. No. 354-MN01-ENG. 5.1. Housing - The housing provides protection to the reference electrode elements. It is made from a rugged thermoplastic and is designed to fit the compliant tee handle mount for convenient manipulator mounting.
7.1.2 Apply a known potential between 0.100V - 2.400V (battery or portable power supply). Measure the potential directly with a multimeter. 7.1.3 Measure the potential reading with the Deep C Meter 300 AD™. These two potentials should be within ± 3 mV. If the difference is greater, send the calibration command through the RS232 interface.
See Table 6 if communication cannot be established. 8.1.3 Find a good location on the vehicle to mount the Deep C Meter 300 AD™ and attach the articulated mount. Typically, the display unit should be in view at the same time as the probe unit to maximize efficiency.
9. Taking CP potential readings 9.1. Stab the contact probe onto the point on the structure where the reading is required; when a good contact is made, the Deep C Meter 300 AD™ will show a steady reading. CAUTIONS • Avoid stabbing painted or coated surfaces; whenever possible, try to take readings on bare steel or on spots specially designated for CP measurement.
Deep C Meter 300 AD™ operation manual 11. Maintenance and repair This section covers general operational maintenance; attempting any tasks not described in this sec- tion may result in damage to the system. 11.1 Tip replacement 11.1.1 From time to time, it will be necessary to replace the contact tip. Remove the old tip with a 7/16”...
Deep C Meter 300 AD™ operation manual 12. RS232 Functions 12.1 Data output 12.1.1 Data string structure: Stab 1, Stab 2, EFG For example: -1034, -1035, -12.2 -1034, -1036, 12.2 12.1.2 After each data set there is a line feed and carriage return present. The rate is 2 data sets per second.
Deep C Meter 300 AD™ operation manual 12.2 Control data input The following functions can be accessed by sending commands over the RS232 interface from within RUSS or through a standard serial program. Table 5: RS232 command list Action Input command...
If problem persists or is not listed, please call our hotline at (713) 983-7117 and ask for Polatrak technical support. 14. Spare parts and accessories 14.1 The Deep C Meter 300 AD is shipped in a waterproof transit case and contains the following spares and accessories. Please contact your Deepwater representative to order additional spares if required.
Deep C Meter 300 AD™ operation manual 14.1.4 O-ring lube 14.1.5 Silicone connector lube 14.1.6 Bulkhead dummy plug 14.1.7 Ag/AgCl electrode element 14.1.8 Lens back-up ring 14.1.9 Lens O-ring Table 7: List of spare parts Part No. Description No. Required No.
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Deep C Meter 300 AD™ operation manual Figure 7 Cell to Zn coupon ROV-II™ calibration wiring schematic Calibration voltmeter display at 2 Volts DC setting Seawater solution Non-metallic bucket Zn calibration coupon Step —VE DC scale Expected result Tip / Pin 1 Reference electrode 2 / Pin 3 –1.030 to –1.070...
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