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Settlement Sensors

Multipoint Settlement Systems (Semiconductor, VW) | Model 3655 · 4655

Model 3655/4655 Multipoint Settlement Systems.
  • Model 3655/4655 Multipoint Settlement Systems.
  • Model 3655/4655 Multipoint Settlement System dimensions
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Model 3655 · 4655

The Model 3655 and 4655 are Multipoint Settlement Systems comprising a series of sensitive Semiconductor Pressure Transducers (3655) or Vibrating Wire Pressure Transducers (4655) connected together with a special Nylon tube filled with de-aired water or, where necessary, a de-aired water/antifreeze mixture. The string of sensors is connected to a common reservoir with a large liquid capacity. In use any change in elevation of a sensor will result in a change in the pressure measured by that sensor. Since all the sensors share the same liquid line and are referenced to the same liquid elevation in the reservoir, changes in the sensor elevations, relative to one another can be measured.

Specifications

Range (3655)
7 kPa (0.68 m) H2O
10 kPa (1.02 m) H2O
17 kPa (1.73 m) H2O
35 kPa (3.57 m) H2O
Range (4655)
70 kPa (7.14 m) H2O
Resolution
3655 | depends on readout
4655 | 0.025% F.S.
Accuracy¹ (3655)²
±0.15% F.S. (7 kPa)
±0.1% F.S. (10, 17, 35 kPa)
Accuracy¹ (4655)
±0.1% F.S.
Temperature Range³
−20 °C to +80 °C
Liquid Tubing
½" Nylon
Vent Tubing
¼" Polyethylene

¹Accuracy established under laboratory conditions.

²0-5 V, 4-20 mA (please contact GEOKON for mV/V accuracies).

³Other ranges available on request.

Compatible Readouts and Dataloggers

*Please Note: The Model 3655 Multipoint Settlement System (comprising a series of sensitive Semiconductor Pressure Transducers) is compatible only with the Model 8600 Series Dataloggers.

Please Note: GEOKON maintains an ongoing policy of design review and reserves the right to amend products and specifications without notice. Various instruments are discontinued over time and replaced with new, updated models.

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