Polatrak DEEP C METER 3000 AD User manual

CORROSION TESTING PROBE
Deepwater Corrosion Services Inc.
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©2023 Deepwater Corrosion Services Inc. Specications subject to change without notice
DEEP C METER 3000 AD™
ROV-MOUNTED CP PROBE
OPERATION MANUAL
ROV-interfaced
cathodic protection
monitoring system
Can output both
contact and EFG
probe readings
Digital output
RS232 standard
ASCII string
Can be used with
Polatrak’s optional
EFG probe

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2SMB-006 Deep C Meter 3000 AD Manual Rev. 2
DEEP-C METER™ MANUAL
Table of contents
1 Overview 3
2 Reference documents 4
3 Health and safety 5
4 LED readout components 5
4.1 Deep C Meter 3000 AD™ 5
4.2 Articulating mount 6
4.3 Flying leads 7
5 Probe unit components 7
6 ROV interface 8
7 Calibration 9
7.1 Deep C Meter AD™ calibration 9
7.2 Bucket calibration 10
7.3 Subsea calibrations 10
7.4 Online calibration 11
8 Operation 11
8.1 Mounting on ROV 11
9 Taking CP potential readings 13
10 Data interpretation 13
10.1 Removal from ROV 14
11 Maintenance and repair 14
11.1 Tip replacement 15
11.2 Electrode element replacement 15
12 RS232 functions 17
12.1 Data output 17
12.2 Control data input 17
13 Troubleshooting 19
13.1 General 19
14 Spare parts and accessories 21

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3SMB-006 Deep C Meter 3000 AD Manual Rev. 2
DEEP-C METER™ MANUAL
List of figures
Figure 1 - Overview 4
Figure 2 - Front of pressure housing 6
Figure 3 - Rear of pressure housing 6
Figure 4 - Articulated mount 6
Figure 5 - Flying leads 7
Figure 6 - SEACON RMG-3FS wiring diagram 15
Figure 7 - DC-II™ calibration wiring schematic 23
List of tables
Table 1 - ROV interface pin-outs 8
Table 2 - CP equipment pin-outs 9
Table 3 - Normal cathodic protection ranges
for bare carbon steel in seawater 14
Table 4 - RS232 Communication settings 17
Table 5 - RS232 Command list 18
Table 6 - Troubleshooting quick guide 20
Table 7 - List of spare parts 22
1. Overview
The Deep C Meter 3000 AD™ is a complete ROV-interfaced cathodic
protection monitoring system.
The system comprises ve basic parts:
1.1 LED readout
Triple voltmeters housed in a stainless steel pressure housing.
1.2 Contact probe
Twin element, tip contact CP probe (Polatrak® Model ROV-II™).
1.3 Flying lead
Three-meter-long umbilical that connects the probe to the readout.
1.4 Power whip
Two-meter-long umbilical that interfaces with the ROV for power
and data output.
1.5 EFG probe (optional)
Can be added as an upgrade to the standard package.

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1.6 The Deep C Meter 3000 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
• Digital output (RS232 – standard ASCII string)
• ROV 24V DC powered, which eliminates the need to open the
pressure housing to change batteries
2. Reference documents
Please see the following pages for pertinent MSDS documents; Polatrak®
manuals are available at https://stoprust.com/resources/downloads/
2.1 ROV-II Operations Manual (354-MN01-ENG)
2.2 EFG 1 Operations Manual (358-MN02-ENG)
2.3 RUSS Operation Manual (358-MN04-ENG)
2.4 Parker Seals - Parker O Lube MSDS – O-ring lubricant
https://www.parker.com/literature/O-Ring%20
Division%20Literature/SDS%20Olube.pdf
Figure 1: Deep C Meter 3000 AD™ components
Power
whip
LED
readout
Flying
lead
EFG probe
(optional)
ROV-II™
T-handle
mount
ROV-II™
contact
probe
Mount

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2.5 Dow Corning – 4 Electrical Insulating Compound MSDS – con-
nector sealant
https://3eonline.com/ImageServer/ImageVieweraspx?id=Ri81UOMdRx
GgoF4FuEjOkN0P3wEfJ3v7z4erMlZ0sppEvgQ6PDo5m1aHMUQjBI
HhdsvNZb983T3iNcJosE42sHXQec8cyVyFu525heZiq3Y%3d
PLEASE CONTACT YOUR DEEPWATER REPRESENTATIVE FOR
ANY QUESTIONS AND/OR ISSUES REGARDING THIS MANUAL.
3. Health and safety
It is the intention of Deepwater Corrosion Services that all proce-
dures will be carried out in a safe manner in accordance with the
Health and Safety At Work Act and any other relevant legislation.
If required by the client, Deepwater personnel will attend any site
safety induction courses before carrying out work on site.
4. LED readout components
The readout unit has three major sub-assemblies: The pressure housing,
articulated mount and ying leads.
4.1. Deep C Meter 3000 AD™
4.1.1. Pressure housing - The pressure housing is made from
316 stainless steel and is rated for water depths of 3,000 meters
(10,000 feet).
4.1.2. Lens - One end of the housing contains an acrylic lens that
seals on the pressure housing with o-rings. Four stainless-steel
screws keep the lens seated in the pressure housing. Access to the
inside of the pressure housing is gained by pulling the lens. Remov-
ing the lens in the eld should be avoided whenever possible.
4.1.3. Bulkhead connector - The back end of the pressure housing
is sealed with three bulkhead connectors. These connectors thread
into the back of the pressure housing and also seal with o-rings. It
should not be necessary to remove these connectors during nor-
mal maintenance. Blank (dummy) plugs are provided and should
be in place whenever the mating connector is removed.
4.1.4. Voltmeter module - The digital voltmeter module is
located within the pressure housing. The module contains three
independent LED displays. Default factory range is ± 2499 mV DC

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DEEP-C METER™ MANUAL
on the top two display lines.
The lower display line is set
to ± 199.9mV DC. The meter
is powered by 24VDC nomi-
nal power but will function
between 8-36VDC.
4.2. Articulating mount
4.2.1. The articulating mount
is designed to secure the
Deep C Meter 3000 AD™ to
the ROV frame and provide
angled adjustment to opti-
mize camera viewing of the
displays. The mount and all
xing hardware are made of
316 stainless steel.
EFG
MCBH-3F connector
Uses male end of
cable #UWC0043
ROV-II
MCBH-3M connector
Uses female
end of cable
#UWC0042
Power, 24 VDC
and RS232
MCBH-4M connector
Uses female end of
cable #UWC0032
Figure 2: Front of pressure housing Figure 3: Rear of pressure housing
Figure 4: Meter mount (UWC0001)

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4.3. Flying leads
4.3.1. There are three leads supplied per kit, each serving a
unique function.
4.3.2. A full wiring diagram can be found in section 6.0.
Figure 5: Flying leads
ROV-II meter side
(Female 3 pin)
EFG probe side
(Female 3 pin)
Pin 1 Black +24V
Pin 2 White GND
Pin 3 Red RX
Pin 4 Green TX
EFG meter side
(Male 3 pin)
Two types of cables for EFG:
UWC0047 Both sides male
DCM0061 One side male, one
female (as shown above)
Power lead
(Female 4 pin)
ROV-II
probe side
(Male 3 pin)
5. Probe unit components
The Deep C Meter 3000 AD™ utilizes the popular Polatrak ROV-II™ tip con-
tact probe. More detailed information can be found in the ROV-II™ opera-
tion 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 t the compliant tee handle mount for convenient
manipulator mounting. The holes in the side allow the body to
become free-ooding and are specically engineered to allow for
accurate potential measurements.
UWC0049
UWC0041

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CAUTION
Do not cover or modify the existing holes or add additional holes
in the body.
5.2 Tail assembly - The tail assembly attaches to the main body
section with two (2) stainless steel ¼”-20 allen head cap screws.
The ROV-II ying lead passes through this unit and has a spiral
strain relief tting. The tail unit includes one male connector for
the contact tip and two female connectors for each of the reference
electrodes.
5.3 Nose cone w/ tip - The nose cone assembly is screwed into the
main body section. The cone houses the replaceable contact tip; it
also includes the female connector that attaches to the male pin on
the extension cable from the tail unit. Tips are made from stain-
less steel and plated with nickel; the nose cone is fabricated from a
rugged thermoplastic.
5.4 Reference electrode element - Two plug-in silver/silver chlo-
ride elements are included.
Electrode elements are accurate to ± 5 mV. See the operations and
maintenance section for instructions on electrode replacement.
CAUTION
Never handle electrode elements with bare hands or expose ele-
ments to a liquid other than fresh water or seawater, as perma-
nent damage may result.
RS232 cable (serial)
DB9 female connector pin out
Pin Polarity Cable color
2RX 232 Red
3TX 232 White
5Signal GND Black
Pin
1. Data carrier detect
2. Receive data
3. Transmit data
4. Data terminal ready
5. Signal ground
6. Data set ready
7. Request to send
8. Clear to send
9. Ring indicator
GND
DTR
TxD
RxD
DCD
RI
CTS
RTS
DSR
9
8
7
6
4
5
3
2
1
6. ROV Interface
Table 1: ROV interface pin outs

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7. Calibration tests
With all the parts connected, the probe(s) should be tested in a non-me-
tallic bucket as described in section 7.2 to verify that all components are
within calibration prior to deploying the ROV.
7.1. Deep C Meter 3000 AD™ calibration
7.1.1 Power-on the unit and allow approximately 5-10 seconds
for the automatic boot-up calibration process to complete.
7.1.2 Apply a known potential between 0.100V - 2.000V (battery
or portable power supply). Measure the potential directly with a
multimeter.
7.1.3 Measure the potential reading with the Deep C Meter 3000
AD™. These two potentials should be within ± 5 mV. If the dif-
ference is greater, send the calibration command through the
RS232 interface. Please see section 12.2 for further details.
4-pin bulkhead - MCBH-4M
(MCIL-4F male
connector)
Pin Polarity Wire color
1+24 Power VDC Black
2 Pwr/Signal GND White
3RX 232 Red
4TX 232 Green
42
3
1
Uses female
Polatrak cable
#UWC0032
ROVII - MCBH-3M (Male bulkhead)
(MCIL-3F connector)
Pin Polarity Meter Wire color
1Tip White
2Element 1 Top Black
3Element 2 Middle Green
Table 2: CP equipment pin outs
EFG - MCBH-3F (Female bulkhead)
(MCIL-3M connector)
1 3
2
13
2
Uses female
Polatrak cable
#UWC0042
Uses male
Polatrak cable
#UWC0043
Pin Polarity Meter Wire color
1 N/A White
2Element 1 Bottom Black
3Element 2 Bottom Green
Table 1: ROV interface pin outs (continued)

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7.2. Bucket calibration check (Please see figure 7 on page 23)
Contact calibration check
7.2.1 Fill a clean, non-metallic bucket or container with seawa-
ter approximately 16 –18 inches deep. Ensure that the bucket has
been completely degreased and rinsed.
7.2.2 Place the probe in the bucket with the tip at an angle to ll
the body with seawater. The entire probe, including the tip, must
be immersed. Ensure there is no trapped air in the unit.
7.2.3 Attach or stab the zinc coupon rmly onto the probe tip. The
upper two display lines on the LED readout should read between
(-) 1.030V and (-) 1.070V and be within 0.005V of each other.
NOTE: If the probe has not been used in the past 24 hours, it
may take 15-30 minutes for the probe to reach equilibrium.
EFG™ calibration check (only applicable if using the EFG™ probe)
7.2.4 Ensure both sets of holes on the EFG™ probe are sub-
merged. Ensure there is no trapped air in the probe. If the bucket
is too short, remove the tail assembly and place the electrode
directly in the water.
7.2.5 The bottom display line should be less than ± 2 mV. If not,
one of the electrodes may need replacing.
7.2.6 Activate the zinc coupon by removing a small section of
oxide lm with a le or rasp.
7.2.7 Place the zinc coupon directly in front of the probe.
7.2.8 The bottom display line should become more negative.
7.2.9 Remove the zinc coupon. The bottom display line should
return to the original value in step 7.2.5.
7.3. Subsea calibrations
7.3.1 While approximately 30 feet away from surrounding struc-
tures / assets, stab the isolated zinc ROV calibration coupon with
the probe’s contact tip.
7.3.2 The upper two display lines on the readout should read be-
tween (-) 1.030V & (-) 1.070V and be within 0.010V of each other.
Make note of this difference for future readings.