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Catalog · Data Sheets

Instrumentation Catalog (.pdf format)

Instrumentation Catalog

DescriptionRevision:Date:
Full-color instrumentation catalog containing the primary GEOKON product lines Rev. D.1 10.2025

Product Data Sheets (.pdf format)

New and recently updated (within the last 6 months) files are shown with shaded background and bold revision, date and size.

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Strain Gauges

Model Number/DescriptionRevision:Date:
4000 Vibrating Wire Arc Weldable Strain Gauge Rev. H.4 07.2025
ST-350 Dynamic Strain Transducer Rev. C 05.2023
4100 Series Vibrating Wire Spot-Weldable Strain Gauges Rev. I.4 07.2025
4200 Series Vibrating Wire Concrete Embedment Strain Gauges Rev. K.2 07.2025
4435 Vibrating Wire Soil Extensometer Rev. C.3 07.2025
4911/4911A Vibrating Wire Rebar Strain Meters (“Sister Bars”) Rev. G 03.2023

Displacement Transducers

Model Number/DescriptionRevision:Date:
4400 Series Vibrating Wire Displacement Transducers Rev. P.3 03.2024
4415 3D Crackmeter Rev. C.3 05.2023
4430 Vibrating Wire Deformation Meter Rev. D.2 07.2025
4435 Vibrating Wire Soil Extensometer Rev. C.3 07.2025

Extensometers

Model Number/DescriptionRevision:Date:
1100 Rod Type Borehole Extensometer Rev. B 07.2025
1300 (A-9) Retrievable Extensometer Rev. H 10.2023
1610 GEOKON/Ealey Tape Extensometer Rev. F 09.2023
1800 Telltales Rev. A.4 11.2023
1900 Magnetic Extensometer Rev. I.2 01.2024
1950 Settlement Points (Borros Type) Rev. E.1 11.2024

Piezometers

Model Number/DescriptionRevision:Date:
4500 Series Vibrating Wire Piezometers and Pressure Transducers Rev. O.5 07.2025
4500CR Corrosion Resistent Piezometers and Pressure Transducers Rev. A.5 08.2024
4500HT • 4500HHT High Temperature Piezometer and Pressure Transducers Rev. H 10.2023
4500MLP Multilevel Piezometer Rev. H 10.2023
4590 Casagrande Standpipe Piezometer Rev. E 05.2023
4675LV Vibrating Wire Weir Monitor Rev. E.1 05.2024

Settlement Sensors

Model Number/DescriptionRevision:Date:
4600 Series Vibrating Wire Settlement Systems Rev. O 04.2022
4625 Settlement Plate Rev. C 07.2022
3655 • 4655 Multipoint Settlement Systems Rev. D 05.2025
4675OC Precision Settlement Monitoring System Rev. C 11.2022

Pressure Cells

Model Number/DescriptionRevision:Date:
4800 Series Earth Pressure Cells Rev. J 12.2023
4815 Series Pressure Cells, Granular Soils Rev. B 04.2019
4850 NATM Style Shotcrete Stress Cell Rev. M 11.2022

Load Cells

Model Number/DescriptionRevision:Date:
3000 Series Electrical Resistance Type Load Cells Rev. C 05.2023
4900 Series Vibrating Wire Load Cells Rev. K.1 04.2022
4910 Vibrating Wire Instrumented Rockbolt Rev. E 05.2023
4915 Tension Load Cell Rev. C 08.2023

Inclinometers

Model Number/DescriptionRevision:Date:
GK-604D MEMS Digital Inclinometer | Spiral Indicator System Rev. H.4 06.2025
6140 Vertical In-Place Inclinometer String Rev. A.5 05.2025
[FR] 6140 Chaîne IPI Verticale Rev. A.4 09.2024
[DE] 6140 Vertikaler IPI-Strang Rev. A.4 09.2024
[PT] 6140 Inclinômetro In-Place String Vertical Rev. A.4 09.2024
[SP] 6140 Cuerda IPI Vertical Rev. A.4 09.2024
6180 Vertical In-Place Inclinometer System Rev. A.7 05.2025
6185 Horizontal In-Place Inclinometer System Rev. A.2 05.2025
6300 Vibrating Wire In-Place Inclinometer Rev. H 03.2023
6400 Glue-Snap ABS Inclinometer Casing Rev. F 06.2024
6500 Fiberglass Inclinometer Casing Rev. F 09.2023
6650 Inclinometer Casing Rev. B 10.2025

Tiltmeters • Pendulums

Model Number/DescriptionRevision:Date:
6190 MEMS Tilt Sensors Rev. A.4 05.2025
6195 Triaxial MEMS Tilt Beam Rev. A.2 05.2025
6350 Vibrating Wire Tiltmeter Rev. I 03.2023
6850 Pendulum Readout Rev. G.1 07.2024

Readouts

Model Number/DescriptionRevision:Date:
GK-404 Vibrating Wire Readout Rev. F 05.2023
404 Intrinsically Safe Vibrating Wire Readout Rev. C 06.2024
GK-406 Vibrating Wire Analyzer Rev. B.1 10.2023
FPC-3 Field PC Rev. A 03.2024
GK-502 Load Cell Readout Rev. C.1 05.2025
4999 Terminal Box Rev. E 05.2024
4999-12L/E LAB3 Surge Module Rev. F 02.2021

Data Loggers • Software

Model Number/DescriptionRevision:Date:
8032 Multiplexer (MUX) Rev. H 05.2024
8600 Series Data Loggers Rev. C.1 05.2024
8800 • 8900 Series GeoNet Wireless Mesh Data Loggers + Data Hosting System Rev. A.8 01.2025
8910 GeoNet Wireless LoRa® Data Acquisition System Rev. B 09.2025
[FR] 8910 Système D’acquisition De Données Sans Fil Lora GeoNet Rev. A.3 07.2025
[DE] 8910 GeoNet Drahtlos Lora Datenerfassungssystem Rev. A.3 07.2025
[PT] 8910 Sistema De Aquisição De Dados Lora Sem Fio GeoNet Rev. A.3 07.2025
[SP] 8910 Sistema De Adquisición De Datos GeoNet Wireless Lora Rev. A.3 07.2025
8920 • 8930 • 8950 Series GeoNet Network Data Loggers + Data Hosting System Rev. D.1 10.2025
8940 Series GeoNet Data Loggers Rev. B.1 09.2024
8960 Series GeoNet Digital Vibrating Wire Interfaces Rev. A.2 04.2024
Agent Software (8800-GNA) Rev. A 10.2024
8020-30 Addressable Vibrating Wire Interface Rev. D 06.2024
8020-38 Addressable Bus Converter Rev. A.1 01.2025
8020-59 Vibrating Wire Frequency to Analog Converter Rev. D 06.2025

Time Domain Reflectometry

Model Number/DescriptionRevision:Date:
Time Domain Reflectometry Cable Rev. A 09.2025

Stressmeters

Model Number/DescriptionRevision:Date:
3200 Hydraulic Borehole Pressure Cells Rev. F 02.2021
4300 Vibrating Wire Stressmeters Rev. D 01.2021
4350 Biaxial Stressmeter Rev. D 05.2023
4370 Concrete Stressmeter Rev. E 06.2024
5000 Borehole Deformation Gauge Rev. D 05.2023

Distributed Fiber Optic Sensors

Model Number/DescriptionRevision:Date:
DFOS Distributed Fiber Optic Sensors Rev. INIT 02.2025

Temperature

Model Number/DescriptionRevision:Date:
3800 Thermistor Probe Rev. A.2 10.2023
3810 Thermistor String Rev. C.1 05.2025
3810B Addressable Thermistor String Rev. C.1 05.2025
4700 • 4700LT • 4700HT Vibrating Wire Temperature Sensors Rev. G 04.2024

Miscellaneous

Model Number/DescriptionRevision:Date:
2100 Nold DeAerator™ Rev. E 06.2024
Instrumentation Cables Rev. H.4 08.2025

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