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Telephone: +1 (713) 983 7117
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Email: [email protected]
©
2015 Deepwater Corrosion Services Inc. Specifications subject to change without notice
Deep C Meter 300 AD™
operation manual
13
SMB-001 Deep C Meter 300 AD 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 Modifier
Response
Result
Example
LED intensity
SI<intensity>!
Where intensity
is a hex number
between 0
and F
Sets the intensity
of the LED display.
The brightness is set
according to the hexa-
decimal value placed
in the intensity value
location.
There is no
response for
this protocol
The display will
change intensity
in real time with
no effect on the
streaming data.
Lowest intensity
Command: SI0!
Half intensity
Command: SI8!
Full intensity
Command: SIF!
Data stream
delimiter
SD<delimiter>!
Sets the output
delimiter in the data
stream to the user’s
preference. Separate
with commas or tabs:
(-1020, -1020, 0.1)
(-1020 -1020 0.1)
There is no
response for
this protocol
The delimiter char-
acter in the data
stream will change
to the Comma or
Tab character in
real time.
Comma separator
Command: SD,!
Tab separator
Command: SDHT!
Analog
polarity
command
SP<polarity>!
Sets the polarity of
analog voltages being
measured by the ADC.
There is no
response for
this protocol
Positive character
sets the common
analog ground to
the negative side of
the converter.
Positive
Command: SP+!
Negative
Command: SP-!
Online
calibration
Cal!
Re-calibrates the
internal AD, which
takes approximately
20 seconds
There is no
response for
this protocol.
The data stream
will be interrupted
during the calibra-
tion process.
Command: Cal!
NOTE: Do not include brackets <> when inputting commands.
13. Troubleshooting
13.1 General
13.1.1
If the top and middle display lines are not within 5 mV check the following:
• Repeat the bucket calibration check (section 7.2). The electrode with the more positive reading
is probably in error.
• Remove the reference electrode elements and replace with spares, being careful not to touch
the silver/ silver chloride pellet with bare or greasy hands. Please see section 11.2 for details. Soak
for 30 minutes with new elements.
13.1.2
If the tip wire is damaged, a temporary soft-splice repair can be made using ScotchKote®
sealant (not included) and splicing tape. However, prolonged operation in this manner is not rec-
ommended. Order a new nose cone assembly as soon as possible.
13.1.3
After any replacement or repair, recalibrate the instrument by performing a bucket test as
described in section 7.2.