Gravimeter DGS AT1-M

Summary

Type	Gravimeter
Vendor	Not Applicable
Model	unknown
S/N	AT1M-33
ID Prefix	gravim
CORIOLIX ID	gravim000033
Class	Other
Location	Tech Shop
Condition	excellent
Configuration
Native Sample Rate	1.0 Hz
UDP Port(s)	53149 None
Enabled	True

Image Not Available

General Description

Dynamic Gravity Systems AT1 Marine Gravimeter Serial Number: 33

Data Collection Specs

Native Data Feed

Signal Type

Digital

Communication Type

RS-232

Serial Details

Baud Rate	9600
Parity	N
Stop Bits	1
Byte Size	8
Timeout (s)	None
Polled Serial Commands

Ethernet Details

MAC Address
IP Address	10.3.0.149
Protocol	udp

Source File Details

Path
Filename

Native Data Format

Native Data Description

LDS Logger ID LDS Time Stamp [UTC] QC_Gravity: Cross coupling corrected gravity in mGal. Filter = Selected sec, time shift = Selected seconds. Digits of precision=9 Units = mGal Gravity: Uncorrected gravity. Filter= 5 sec, time shift =5 second Digits of precision=9 Units= mGal Long accelerometer: long accelerometer Filter=5 sec, time shift = 5 second Digits of precision=9, Units= Gal Cross accelerometer: cross accelerometer. Filter=5 sec, time shift = 5 second, Digits of precision=9, Units= mGal Beam: beam position in the range -5 to 5 volts from top to bottom stops, Filter=5 sec, Digits of precision=9, Units= volts Sensor Temp: Sensor Temperature in deg C. Filter=Selectable (typically 100 sec), Digits of precision=9, Units= deg C STATUS: Binary codified status word. Used to monitor the state of the sensor: Bit 0 =1 Meter Clamp Bit 1 =1 Meter Unclamp Bit 2 =1 The sensor has been GPS time synchronized Bit 3 =1 Feedback is ON Bit 4 =1 R1 (Not used in marine version) Bit 5 =1 R2 (Not used in marine version) Bit 6 = AD frequency locked ON Bit 7 = Command received from host computer Bit 8 = Platform controller Nav mode 1 Bit 9 = Platform controller Nav mode 2 Bit 10 = Not used Bit 11 = Serial com with sensor fail Bit 12 = Valid GPS NMEA string connected to GPS input Bit 13 = Sensor gravity input is saturated Bit 14 = Not used Bit 15 = Not used Checksum: Integer sum of all received values, used to detect transmission errors. Pressure: Internal sensor pressure. Filter=Selectable (typically 100 sec), Digits of precision=9, Units= inHg Etemp: Electronics temperature. Filter=Selectable (typically 100 sec), Digits of precision=9, Units= deg C Ve: Cross coupling monitor. Filter=5 sec, time shift =5 second, Digits of precision=9. Ve is calculated in the sensor as Ve = Kscale * Gravity^2 where Kscale is an arbitrary scale to make the monitor Ve be in the range of 0-20 for motions with vertical accelerations in the range 0 to 100 K mGals. Units= cm/sec Vcc: Cross coupling monitor. Filter=5 sec, time shift =5 second, Digits of precision=9. Vcc is overwrited with Vmon monitor. Units=cm/sec Al: Cross coupling monitor. Filter=5sec, time shift =5 second, Digits of precision=9. The monitor al is the product of vertical acceleration and longitudinal acceleration as recorded by the long accelerometer. This monitor is also scaled. Kscale m^2/sec^4 Ax: Cross coupling monitor. Filter-5 second, time shift = 5 second, Digits of precision=9. The monitor ax is the product of vertical acceleration and cross acceleration as recorded by the cross accelerometer. This monitor is also scaled. Kscale m^2/sec^4 Latitude: Read from the GPS NMEA RMC, Digits of precision=9, Units= Degrees Longitude: Read from the GPS NMEA RMC, Digits of precisiion=9, Units= Degrees Speed: Read from the GPS NMEA RMC, Digits of precisiion=9, Units= knots Course: Read from the GPS NMEA RMC, Digits of precisiion=9, Units= Degrees VMOND: Mean vertical velocity. 60 second filter. Digits of precision=9, Units= cm/s Year: Four digits year Month: 2 digits month Day: 2 digits day of the month Hours: 2 digits hours Min: 2 digits minutes Seconds: 2 digits second NumLine: integer up to 32 bits, number of lines sent from the start of the sensor

Native Data Type

text

Start of Message Characters

End of Message Characters

Sample Data Message

12396.903519694097,12378.065460704620, -0.031944755548, 0.103062641986, -0.980938351266, 52.268820625000, 16730, 4078072, 28.955870658333, 1.032059166667, 0.019980000000, 0.203270000000, -0.001610000000, 0.005390000000, 60.119500100000,-149.427380616667, 0.000000000000, 69.570000000000, 0.653532424053,2023,12,16,15,24,00.31,1608915

Message Parser Format

['^(?P<qc_gravity>\d+\.\d+),\s*(?P<gravity>\d+\.\d+),\s*(?P<long_accelerometer>\-?\d+\.\d+),\s*(?P<cross_accelerometer>\-?\d+\.\d+),\s*(?P<beam>\-?\d+\.\d+),\s*(?P<sensor_temp>\-?\d+\.\d+),(?P<status>.{16}),\s*(?P<checksum>\-?\d+),\s*(?P<pressure>\-?\d+\.\d+),\s*(?P<e_temp>\-?\d+\.\d+),\s*(?P<Ve>\-?\d+\.\d+),\s*(?P<Vcc>\-?\d+\.\d+),\s*(?P<Al>\-?\d+\.\d+),\s*(?P<Ax>\-?\d+\.\d+),\s*(?P<latitude>\-?\d+\.\d+),\s*(?P<longitude>\-?\d+\.\d+),\s*(?P<speed>\-?\d+\.\d+),\s*(?P<course>\-?\d+\.\d+),\s*(?P<vmond>\-?\d+\.\d+),(?P<year>\d{4}),(?P<month>\d{2}),(?P<day>\d{2}),(?P<hour>\d{2}),(?P<minute>\d{2}),(?P<second>\d{2}\.\d+),\s*(?P<numline>-?\d+)']

Data Processing

Data Processing Script

NoTransformation

Data Rates

Native Sample Rate

1.0 Hz

Shipboard Network Packet Rate

None Hz

Ship to Shore Rate

None Hz

Data Storage & Access

Raw Data Ethernet Distribution

IP Address	10.3.0.255
Port	53149
Packet Size	None

Transformed Data Ethernet Distribution

IP Address
Port	None

Archive to Database

False

Transmit Real-time Data to Shore

False

Time Source

Source

local_time_server

Parameters

Quantity	Gravity Corrected (mGal)	Gravity Uncorr (mGal)	Sensor Temp (degrees_C)
Plot Color
Parameter Full Name	Cross Coupling Corrected Gravity	Gravity Uncorrected	Sensor Temperature
Parameter Short Name	Gravity Corrected	Gravity Uncorr	Sensor Temp
Parameter Standard Name	GRAVFLDX	GRAVFLDX	XXXXXX
SAMOS Data Category
Description	Cross coupling corrected gravity in mGal. Filter = Selected sec, time shift = Selected seconds. Digits of precision=9 Units = mGal	Uncorrected gravity. Filter= 5 sec, time shift =5 second Digits of precision=9 Units= mG	Sensor Temperature in deg C. Filter=Selectable (typically 100 sec), Digits of precision=9, Units= deg C
Processing Status	internally derived	internally derived	raw
Processing Symbol	qc_gravity	gravity	sensor_temp
Diagnostic	False	True	True
IOOS Category	Other	Other	Other
Units	mGal	mGal	degrees_C
Data Type	double	double	float
Gross Minimum Value	None mGal	None mGal	None degrees_C
Gross Maximum Value	None mGal	None mGal	None degrees_C
Recommended Minimum Value	None mGal	None mGal	None degrees_C
Recommended Maximum Value	None mGal	None mGal	None degrees_C
Global Minimum Value	None mGal	None mGal	None degrees_C
Global Maximum Value	None mGal	None mGal	None degrees_C
Local Minimum Value	None mGal	None mGal	None degrees_C
Local Maximum Value	None mGal	None mGal	None degrees_C
Lower Detection Limit	None mGal	None mGal	None degrees_C
Saturated Value	None mGal	None mGal	None degrees_C
Bad Data Value	None mGal	None mGal	None degrees_C
Resolution	None mGal	None mGal	None degrees_C
Accuracy	+/- None mGal	+/- None mGal	+/- None degrees_C
Precision	None mGal	None mGal	None degrees_C
Binning Type	linear	linear	linear
Online Display Format	8.4f	8.4f	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	excellent
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	Sikuliaq
Vessel Location	Tech Shop
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
Feb 14 2024 21:14:14	Nahorniak, Jasmine	sensor specs update	model changed from [] to [unknown]
Feb 01 2024 15:41:16	Greto, Carmen	sensor specs update	model changed from [unknown] to []
Jan 26 2024 22:18:06	Nahorniak, Jasmine	sensor specs update	processing_script changed from [] to [NoTransformation]
Jan 26 2024 22:18:06	Nahorniak, Jasmine	sensor specs update	model changed from [] to [unknown]
Jan 26 2024 22:18:06	Nahorniak, Jasmine	sensor specs update	sensor_prefix changed from [] to [gravim]
Jan 20 2024 16:11:57	Greto, Carmen	sensor specs update	sensor_name changed from [Gravimeter DGS_33] to [Gravimeter DGS AT1-M_33]
Jan 20 2024 16:11:29	Greto, Carmen	sensor specs update	last_cal_date changed from [2022-01-26 00:00:00+00:00] to [None]
Jan 20 2024 16:11:29	Greto, Carmen	sensor specs update	maintenance_C_text changed from [test001] to []
Jan 20 2024 16:11:29	Greto, Carmen	sensor specs update	maintenance_B_text changed from [Zero Damp and Tilt/Pitch Table Tests] to []
Jan 20 2024 16:11:29	Greto, Carmen	sensor specs update	packet_rate_hz changed from [1.0] to [None]
Jan 20 2024 16:11:29	Greto, Carmen	sensor specs update	transmit_port changed from [53108] to [53149]
Jan 20 2024 16:11:29	Greto, Carmen	sensor specs update	use_level changed from [] to [primary]
Jan 20 2024 16:11:29	Greto, Carmen	sensor specs update	location_text changed from [] to [Tech Shop]
Jan 20 2024 16:11:29	Greto, Carmen	sensor specs update	vessel changed from [] to [Sikuliaq]
Jan 20 2024 16:11:29	Greto, Carmen	sensor specs update	enabled changed from [False] to [True]
Jan 20 2024 16:11:29	Greto, Carmen	sensor specs update	condition changed from [] to [excellent]
Jan 20 2024 16:11:29	Greto, Carmen	sensor specs update	current_status changed from [] to [in use]
Jan 20 2024 16:11:29	Greto, Carmen	sensor specs update	current_location changed from [no longer in possession] to [installed]
Jan 20 2024 16:11:29	Greto, Carmen	sensor specs update	acquire_date changed from [None] to [2023-11-28 00:00:00+00:00]
Jan 20 2024 16:11:29	Greto, Carmen	sensor specs update	text_regex_format changed from [['^(?P<interface_cou ... s+(?P<status>\d+)$']] to []
Jan 20 2024 16:11:29	Greto, Carmen	sensor specs update	sample_data_message changed from [04:025409 00] to [grav_grav-dgs-33-pro ... ,15,24,00.31,1608915]
Jan 20 2024 16:11:29	Greto, Carmen	sensor specs update	native_data_description changed from [Example Data Line: ... and sensor not valid] to [LDS Logger ID L ... start of the sensor]
Jan 20 2024 16:11:29	Greto, Carmen	sensor specs update	sensor_ip changed from [10.3.0.108] to [10.3.0.149]
Jan 20 2024 16:11:29	Greto, Carmen	sensor specs update	description changed from [The BGM-3 system con ... stabilized platform.] to [Dynamic Gravity Syst ... er Serial Number: 33]
Jan 20 2024 16:11:29	Greto, Carmen	sensor specs update	vendor changed from [Bell Aerospace ] to [Not Applicable]
Jan 20 2024 16:11:29	Greto, Carmen	sensor specs update	sensor_name changed from [Gravimeter BGM-3_S222] to [Gravimeter DGS_33]
Jan 20 2024 15:55:03	Greto, Carmen	new sensor	Copied sensor metadata from gravim000222 with modified serial number AT1M-33.

Calibration & Maintenance

Frequency	Last Completed	Next Due
Maintenance A: Gravity Tie

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	other
Responsible Party	UAF Marine Technicians
Purchase Date
Acquire Date	Nov 28 2023
Acquire Condition
End/Lost Ownership Date

Vendor Support

Support Type	Details
Company
Website
Phone
Email
Shipping

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