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MicroTSG (Thermosalinograph)
SBE 45

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Print version     Current manuals - SBE 45 & Interface Box  (for older manuals, click here)     Reference Sheet     Configuration options & accessories

SBE 45 MicroTSGDESCRIPTION

The SBE 45 MicroTSG Thermosalinograph is an externally powered, high-accuracy instrument, designed for shipboard determination of sea surface (pumped-water) conductivity and temperature. Salinity and sound velocity can also be computed. The MicroTSG is constructed of plastic and titanium to ensure long life with minimum maintenance.

OPERATION OVERVIEW

Communication with the MicroTSG is over an internal, 3-wire, RS-232C link, providing real-time data transmission. Commands can be sent to the MicroTSG to provide status display, data acquisition setup, data display and capture, and diagnostic tests. User-selectable operating modes include:

Calibration coefficients stored in EEPROM allow the MicroTSG to transmit data in engineering units.

SENSORS

The MicroTSG retains the temperature and conductivity sensors used in the SBE 21 Thermosalinograph, but has improved acquisition electronics that increase accuracy and resolution, and lower power consumption. The MicroTSG’s aged and pressure-protected thermistor has a long history of exceptional accuracy and stability (typical drift is less than 0.002 °C per year). Electrical isolation of the conductivity electronics eliminates any possibility of ground-loop noise.

The MicroTSG’s internal-field conductivity cell is unaffected by external fouling, and uses expendable anti-foulant devices.

OPTIONAL PN 90402 - SBE 45 POWER, NAVIGATION, and REMOTE TEMPERATURE INTERFACE BOX

An optional AC- or DC-powered Interface Box:

SOFTWARE

The MicroTSG is supplied with our powerful Win 2000/XP software package, SEASOFT© V2. SEASOFT's modular programs include:

INSTALLATION

  • MicroTSG has four 6.35 mm (1/4-inch) thru-bolt holes for mounting to the ship.
  • Housing is tapped with 3/8-inch U.S. standard NPT threads.
  • Nylon hose barb fittings for 3/8-inch tubing are provided.

 

 

System Schematic: MicroTSG

   System Schematic: MicroTSG with Optional 90402 Interface Box
and Remote Temperature Sensor

SPECIFICATIONS

 

 Conductivity Temperature
 (°C) * 		Salinity (PSU), typical
Measurement
Range 		0-7 S/m 
(0-70 mS/cm) 		-5 to 35 -
Initial
 Accuracy 		0.0003 S/m
(0.003 mS/cm) 		0.002 0.005
Typical Stability (per month) 0.0003 S/m
(0.003 mS/cm) 		0.0002 0.003
Resolution 0.00001 S/m
(0.0001 mS/cm) 		0.0001 0.0002
Calibration Range 0-6 S/m (60 mS/cm),
physical calibration over the range 2.6 to 6 S/m (26-60 mS/cm), plus zero conductivity (air) 		+1 to +32 °C -
       

* For specifications for optional SBE 38 remote temperature sensor, see SBE 38 datasheet.

Time Resolution: 1 second

Clock Stability: 13 seconds/month

Input Power: 8-30 VDC

Acquisition Current: 34 milliamps at 8 VDC; 30 milliamps at 12-30 VDC

Quiescent Current: 10 microamps

Acquisition Rate: 1 Hz maximum

Operating Pressure: 34.5 decibars (50 psi) maximum

Flow Rate: 10 to 30 ml/sec (0.16 to 0.48 gal/min)

Materials: PVC housing

Weight: 4.6 kg (10.2 lbs)

ADDITIONAL INFORMATION / LINKS:

Documentation -- manual, photos, technical papers, application notes, etc.

Sales Information -- options, accessories, cables, mount kits, spares, etc.

Software -- components of Seasoft V2

Links to Other Instruments of Interest

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Specifications are subject to change without notice.  

Last modified:26-Apr-2011

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