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Glider Payload CTD (GPCTD)
Configuration Details

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Brochure/specifications     Manual

Note: We do not publish prices on the website. Please contact us [seabird@seabird.com or (+1) 425-643-9866] for pricing.

Part # Description Notes
GPCTD Glider Payload CTD (GPCTD) for measuring conductivity, temperature, & pressure, & optionally dissolved oxygen (with DO interface & modular SBE 43F DO sensor). Includes modular pump, AF24173 Anti-Foulant Device, Seasoft software, & complete documentation (order interface cable separately). Specify: housing & pressure range selection.  
GPCTD Housing Selections -- MUST SELECT ONE
GPCTD-1a 350 m plastic CTD housing with pump in plastic housing Pumps are rated to 600 m (plastic housing) or 10,500 m (titanium housing).
GPCTD-1b 1500 m titanium CTD housing with pump in titanium housing
GPCTD Strain Gauge Pressure Sensor Selections -- MUST SELECT ONE
GPCTD-2a 100 m strain gauge pressure sensor Pressure sensor is installed in end cap, & is not field replaceable / swappable. While highest pressure rating gives you most flexibility in using GPCTD, it is at expense of accuracy & resolution. It is advantageous to use lowest range pressure sensor compatible with your intended maximum operating depth, because accuracy & resolution are proportional to pressure sensor's full scale range. For example, comparing 100 & 2000 m sensors --
  • 100 m sensor:
    initial accuracy = 0.1 m (= 0.1% * 100 m),
    resolution = 0.002 m (= 0.002% * 100 m)
  • 2000 m sensor:
    initial accuracy = 2 m (= 0.1% * 2000 m),
    resolution = 0.04 m (= 0.002% * 2000 m)
GPCTD-2b 350 m strain gauge pressure sensor
GPCTD-2c 1000 m strain gauge pressure sensor
GPCTD-2d 2000 m strain gauge pressure sensor
GPCTD Dissolved Oxygen Interface Option
GPCTD-3 Include optional Dissolved Oxygen sensor interface board, bulkhead connector, and dummy plug for interfacing with SBE 43F Dissolved Oxygen Sensor This option is required to provide electronics & bulkhead connector interface to DO sensor, but does not include DO sensor (select GPCTD-4a or 4b below for DO sensor). If you intend to purchase and integrate DO sensor later, Sea-Bird recommends that you select GPCTD-3 now; cost for including it when you order GPCTD is small compared to retrofit cost for adding it later.
GPCTD Dissolved Oxygen Sensor Options
GPCTD-4a Integrate SBE 43F Dissolved Oxygen Sensor with 600 m plastic housing (interface cable PN 171558 included) SBE 43F is a frequency output version of our SBE 43 Dissolved Oxygen Sensor, & has same performance specifications. Select depth rating for SBE 43F compatible with depth rating of your instrument housing.

Note: GPCTD-3 electronics & bulkhead connector also required.
GPCTD-4b Integrate SBE 43F Dissolved Oxygen Sensor with 7000 m plastic housing (interface cable PN 171558 included)
GPCTD Spares & Accessories
90703 GPCTD SBE 5 pump, plastic housing, IE55W connector One pump ships with GPCTD; these are spares.
90696 GPCTD SBE 5 pump, titanium housing, IE55W connector
801542

AF24173 Anti-Foulant Device pair (spare, bagged, labeled for shipping)

 

 Anti-foulant device fits into anti-foulant device cup. One ships installed in GPCTD; these are spares.

Useful life varies, depending on several factors. We recommend that customers consider more frequent replacement when high biological activity & strong current flow (greater dilution of anti-foulant concentration) are present. Moored instruments in high growth & strong dilution environments have been known to obtain a few months of quality data, while drifters that operate in non-photic, less turbid deep ocean environments may achieve years of quality data. Experience may be strongest determining factor in specific deployment environments.
801944 Data I/O cable, 4-pin IE55 to DB-9S with power leads, 2.5 m (DN 33511) This cable is for interfacing with a computer, for GPCTD setup and data upload.
171558 Cable, SBE 43F, IE55 3-pin to 3-pin, 0.5 m (DN 32561) This cable is for connecting optional SBE 43F to standard IE-55 bulkhead connector on GPCTD.
172581 Pump cable, 2-pin IE55 to 2-pin IE55, 0.5 m (DN 33474) This cable is for connecting pump to GPCTD pump bulkhead connector. Cable is included with GPCTD; this is spare.
30388 Tygon tubing, 1/2" ID X 3/4" OD, 2 m Main plumbing between GPCTD, (optional) SBE 43F dissolved oxygen sensor, and pump.
30579 Tygon tubing, 3/8" ID X 1/2" OD, 2 m Fits over ends of optional SBE 43 plenum; main plumbing fits over this.

Product configuration options listing for all products

Cables

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