Sea-Bird Electronics, Inc. E-mail: seabird@seabird.com
1808 136
th
Place NE, Bellevue, Washington 98005 USA Telephone: (425) 643-9866
Website: http://www.seabird.com Fax: (425) 643-9954
Submersible Pump SBE 5T (titanium) & SBE 5P (plastic)
The pump module is a compact unit consisting of a centrifugal pump head and a
long-life, brushless, DC, ball-bearing motor. The pump impeller and electric drive
motor are coupled magnetically through the housing, providing high reliability by
eliminating moving seals. The 5T has a 10,500-meter (34,400-ft) titanium housing;
the 5P has a 600-meter (1960-ft) plastic housing. The operational characteristics
of the 5T and 5P are identical.
APPLICATIONS
The pump is a primary component in the SBE 9plus CTD and 25 SEALOGGER
CTD. It is also used as optional equipment on SBE 16plus V2, 16plus-IM V2, and
19plus V2 SEACAT CTDs. The pump flushes water through the conductivity cell at
a constant rate, independent of the CTD's motion, improving dynamic
performance. It may also be suitable for custom applications, where pressure
heads are less than 300 cm of water and flow rates are less than 100 ml/sec.
CONFIGURATION
The pump is configured by selecting standard or low voltage, and one of several motor speed options. Speed options
of 1300, 2000, or 3000 rpm have been established to meet flow requirements for Sea-Bird applications. Other speeds
can be set by adjusting a potentiometer.
• #3 winding, low voltage, 2000 rpm –
typical for SBE 25
• # 3 winding, standard voltage, 2000 rpm –
typical for SBE 16plus V2, 16plus-IM V2, or
19plus V2 with pumped auxiliary sensor(s)
• #3 winding, standard voltage, 3000 rpm –
typical for SBE 9plus
OPERATION
Motor speed and pumping rate remain nearly constant
over the entire input voltage range (less than 1% change
in speed for a 1-volt change in supply voltage). The
unrestricted flow rate with no head is approximately
100 ml/second at 2000 rpm. Flow changes are nearly
linear with changes in speed. With unlimited supply
current, turn-on surge is approximately 1.8 Amps
(maximum), which drops to steady state in
approximately 0.25 seconds. If power supply current is
limited to approximately 200 milliAmps, the motor comes
up to speed in approximately 0.30 seconds. A series
diode is installed in the input power line to prevent
damage if wires are accidentally reversed. Pumping
rates and motor current for various applications are
shown on the next page.
SPECIFICATIONS
Input Voltage:
Standard input range
(#3 winding; 1300 - 3000 RPM):
10 - 18 VDC
Low input range
(#3 or #5 winding; 1300, 2000 RPM only):
6 - 16 VDC
Weight:
SBE 5T - 0.7 kg (1.5 lbs) in air, 0.3 kg (0.7 lbs) in water;
SBE 5P – 0.5 kg (1.0 lb) in air, 0.1 kg (0.2 lbs) in water
SBE
5T
SBE
5P
SBE
5T
SBE
5P
145
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