Support
Thermistor string downloads
Essential for orders
01 / Order configuration
Complete this form before requesting a quotation.
The 2W request form records the cable lengths, measuring-point positions, sensor types, accuracy and interface needed to calculate and manufacture your string. A completed form is essential for quotation and order processing.
Email the completed PDF to GeoPrecision for EU / Asia or CryoGeeks for USA / Canada.
Download 2W request form (PDF)
Current · Type 41002 / SDI-12 interface
Convert the native 2Wire bus to SDI‑12.
The string itself uses a digital two-wire protocol. The POM-housed OSX node Type 410 connects directly to that string and provides an SDI-12 V1.3 interface for the data logger.
It can be used with any SDI-12-capable logger; GEOprecision LTX loggers are optimised for this setup. Bluetooth Low Energy provides local access for configuration and diagnostics through BlueShell or the browser-based BLX Dashboard.
Type 410 data sheet
2Wire in · SDI-12 out03 / Complete signal path
Keep the logger choice open.
The sensor string connects to Type 410 over its native two-wire bus. On the other side of the converter, the exposed leads carry power, ground and the standard SDI-12 data signal to the selected logger.
If a separate converter is not required, choose the direct connection to a compatible GEOprecision minilogger in a stainless-steel or POM housing.
Compare both versions04 / Files
Current forms and documentation.
Current Type 410 information stays separate from manuals, firmware and software for discontinued hardware.
2W Thermistor String request form
Required for calculation, quotation and order processing · PDF
SDI-12 Converter Type 410 · 2Wire to SDI-12 data sheet
PDF · SDI-12, Bluetooth, topology and system limits
LTX logger overview
Online documentation · SDI-12 logger platforms, housings, storage and communication options
Open-SDI12 sensor catalogue
Online documentation · OSX sensor and interface node types, including Type 410
Legacy systems
Manuals, firmware and Windows software for discontinued converter and logger generations.
Match every manual, firmware package and application to the exact model and hardware revision. Contact GEOprecision with the model and serial number if the generation is unclear.