C-Star

Data | Plots

Summary

Type	Transmissometer
Vendor	Sea-Bird Scientific (WET Labs)
Model	WET Labs {Sea-Bird WETLabs} C-Star CST-25-DR transmissometer
S/N	2405
ID Prefix	transm
CORIOLIX ID	transm002405
Class	Flowthrough
Location
Condition
Configuration
Native Sample Rate	8.0 Hz
UDP Port(s)	30319 None
Enabled	True

Image Not Available

General Description

PR- C-STAR G4 25 cm. Measures beam attenuation.

Data Collection Specs

Native Data Feed

Signal Type

Digital

Communication Type

Ethernet

Serial Details

Baud Rate	19200
Parity	N
Stop Bits	1
Byte Size	8
Timeout (s)	None
Polled Start Commands
Polled Serial Commands

Ethernet Details

MAC Address
IP Address
Protocol

Source File Details

Path
Filename

Native Data Format

Native Data Description

Native Data Type

text

Start of Message Characters

End of Message Characters

Sample Data Message

$transm002405,CST-2405PR 11531 15780 15783 -0.087 544

Message Parser Format

['^\Wtransm\d{6},CST-(\d+)PR\s+(?P<reference>\d+)\s+(?P<signal>\d+)\s+(?P<corrected>\d+)\s+(?P<transmittance>\-?\d+\.\d+)\s+(?P<thermistor>\d+)$']

Data Processing

Data Processing Script

CStar

Data Rates

Native Sample Rate

8.0 Hz

Shipboard Network Packet Rate

1.0 Hz

Ship to Shore Rate

1.0 Hz

Data Storage & Access

Raw Data Ethernet Distribution

IP Address	192.168.0.255
Port	30319
Packet Size	None

Transformed Data Ethernet Distribution

IP Address
Port	None

Archive to Database

True

Transmit Real-time Data to Shore

True

Time Source

Source

Parameters

Quantity	c650 (1/m)	Transmittance (%)	Transmittance (counts)
Plot Color
Parameter Full Name	Beam attenuation	Beam Transmittance	Beam Transmittance
Parameter Short Name	c650	Transmittance	Transmittance
Parameter Standard Name	ATTNMS01	POPTBR01	NCNTATT1
SAMOS Data Category
Description	Flowthrough measurement of beam attenuation or beam c (1/m) at an excitation of 650nm.	Flowthrough measurement of beam transmittance (%) at an excitation of 650nm.	Flowthrough measurement of the C-Star transmissometer at an excitation of 650nm in the native format of Counts.
Processing Status	post processed	post processed	raw
Processing Symbol	beamc	transmittance	signal
Diagnostic	False	False	False
IOOS Category	Other	Other	Other
Units	1/m	%	counts
Data Type	double	double	double
Gross Minimum Value	None 1/m	None %	None counts
Gross Maximum Value	None 1/m	None %	None counts
Recommended Minimum Value	None 1/m	None %	None counts
Recommended Maximum Value	None 1/m	None %	None counts
Global Minimum Value	0.0 1/m	None %	0.0 counts
Global Maximum Value	34.0 1/m	None %	16380.0 counts
Local Minimum Value	None 1/m	None %	None counts
Local Maximum Value	None 1/m	None %	None counts
Lower Detection Limit	None 1/m	None %	None counts
Saturated Value	None 1/m	None %	None counts
Bad Data Value	None 1/m	None %	None counts
Resolution	None 1/m	None %	None counts
Accuracy	+/- 0.003 1/m	+/- None %	+/- None counts
Precision	None 1/m	None %	None counts
Binning Type	linear		linear
Online Display Format	4.1f	3.0f	4.1f
Logging Modes

Physical Sensor Specs

Operating Limits
Input Power	None - None V AC
Ideal Power	None V AC
Operating Current	None - None mA @ None V AC
Analog Output	None - None
Operating Flow Rate	None - None ml s-1
Ideal Flow Rate	None ml s-1
Operating Depth	None - None m
Operating Temperature	None - None degree_C
Lamp Life	None days
Response Time	None seconds
Additional Time Offset	None seconds
Physical Status
Current Location	installed
Current Status	in use
Physical Condition
Physical Configuration
Software Version
Software Configuration
Data Acquisition Device ID
Data Acquisition Device Serial Port
Data Acquisition Device Analog/Digital Port(s)
Data Acquisition Device Modbus Unit	None
Sensor Use Level	primary
Enabled	True
Vessel Installation Location
Vessel	sav
Vessel Location
Location Coordinates (meters)
Sensor Orientation
Height Above Waterline (meters)	None
Zero Line Reference (degrees from bow)	None
Receives Filtered Water	False

Maintenance & Support

Sensor Log

Date (UTC)	Submitter	Event Type	Details
Mar 12 2025 17:15:37	King, Tristan	sensor specs update	enabled changed from [False] to [True]
Mar 06 2025 18:35:42	King, Tristan	sensor specs update	current_location changed from [] to [installed]
Mar 06 2025 18:06:51	King, Tristan	sensor specs update	current_status changed from [] to [in use]
Mar 05 2025 23:11:59	King, Tristan	sensor specs update	model changed from [WETLabs C-Star transmissometer] to [WET Labs {Sea-Bird W ... 5-DR transmissometer]
Mar 03 2025 23:19:00	King, Tristan	sensor specs update	enabled changed from [True] to [False]
Feb 27 2025 21:02:54	King, Tristan	sensor specs update	processing_script changed from [NoTransformation] to [CStar]
Feb 27 2025 20:54:07	King, Tristan	sensor specs update	enabled changed from [False] to [True]
Feb 27 2025 20:52:52	King, Tristan	sensor specs update	logging_modes changed from [] to [file/db]
Feb 27 2025 20:52:52	King, Tristan	sensor specs update	transmit_rate_hz changed from [None] to [1.0]
Feb 27 2025 20:52:51	King, Tristan	sensor specs update	packet_rate_hz changed from [None] to [1.0]
Feb 27 2025 20:52:51	King, Tristan	sensor specs update	processing_script changed from [CStar] to [NoTransformation]
Feb 27 2025 20:52:51	King, Tristan	sensor specs update	text_regex_format changed from [] to [['^\Wtransm\d{6},CST ... P<thermistor>\d+)$']]
Feb 27 2025 20:52:51	King, Tristan	sensor specs update	sample_data_message changed from [] to [$transm002405,CST-24 ... 780 15783 -0.087 544]
Feb 27 2025 20:52:51	King, Tristan	sensor specs update	native_type changed from [] to [text]
Feb 27 2025 20:52:51	King, Tristan	sensor specs update	sample_rate_hz changed from [None] to [8.0]
Feb 27 2025 20:52:51	King, Tristan	sensor specs update	serial_bytesize changed from [] to [8]
Feb 27 2025 20:52:51	King, Tristan	sensor specs update	serial_stop_bits changed from [] to [1]
Feb 27 2025 20:52:51	King, Tristan	sensor specs update	serial_parity changed from [] to [N]
Feb 27 2025 20:52:51	King, Tristan	sensor specs update	serial_baud_rate changed from [] to [19200]
Feb 27 2025 20:52:51	King, Tristan	sensor specs update	comm_type changed from [] to [Ethernet]
Feb 27 2025 20:52:50	King, Tristan	sensor specs update	signal_type changed from [] to [Digital]
Feb 27 2025 16:51:04	King, Tristan	sensor specs update	transmit_port changed from [30307] to [30319]
Nov 08 2024 22:24:25	Romsos, Chris	sensor specs update	enabled changed from [True] to [False]
Nov 07 2024 19:14:24	Romsos, Chris	sensor specs update	enabled changed from [True] to [False]
Nov 06 2024 23:48:21	Romsos, Chris	sensor specs update	transmit_port changed from [None] to [30307]
Nov 06 2024 23:48:21	Romsos, Chris	sensor specs update	transmit_ip changed from [] to [192.168.0.255]
Nov 06 2024 23:48:21	Romsos, Chris	sensor specs update	location_text changed from [Forward Machinery Room] to []
May 06 2024 16:08:05		sensor specs update	processing_script changed from [] to [CStar]
Apr 29 2024 19:24:13		sensor specs update	vendor changed from [Sea-Bird Scientific] to [Sea-Bird Scientific (WET Labs)]
Apr 29 2024 18:58:39		sensor specs update	description changed from [Beam attenuation] to [PR- C-STAR G4 25 cm. Measures beam attenuation.]
Apr 29 2024 18:47:25		new sensor	Initial submission of sensor metadata.

Calibration & Maintenance

Frequency	Last Completed	Next Due
Maintenance A:

Maintenance B:

Maintenance C:

Calibration

Recommended Replacement

Warranty

Calibration Files

Date	Version	Author	Type	Document	Access

User Guides & Documents

Date	Version	Author	Type	Document	Access

Ownership

Quantity	Value
Owner
Responsible Party
Purchase Date
Acquire Date
Acquire Condition
End/Lost Ownership Date

Vendor Support

Support Type	Details
Company	Sea-Bird Scientific (WET Labs)
Website	https://www.seabird.com
Phone	+1 425 643 9866 x3
Email	techsupport@seabird.com
Shipping

Copyright Notice: All sensor-specific images and documentation on this page are copyright of the vendor.