Deepod compact CTD

Compact CTD monitoring for distributed field campaigns.

Deepod is a compact autonomous CTD and data logger for scientific field campaigns, environmental baseline work, and distributed water monitoring. It measures conductivity, temperature, and depth while keeping deployment, calibration, and data access simple.

Deepod compact CTD product
Deepod C compact CTD with replaceable calibrated wet-end plug.

Small CTD. Replaceable calibrated plug. Traceable data.

Deepod separates the reusable electronics body from the calibrated wet-end plug. This keeps the main instrument in service while allowing the measurement-critical wet end to be exchanged, refurbished, or recalibrated between deployment cycles.

CTD measurements

Conductivity, temperature, and pressure-derived depth in one compact autonomous field unit.

Serviceable wet end

Each calibrated plug carries its own identity and calibration record, supporting replacement, refurbishment, and lifecycle tracking.

Autonomous operation

Battery operation, local storage, optional GPS, Wi-Fi offload, and browser-based configuration without phone-app dependence.

Exploded view of the Deepod modular CTD architecture
Exploded view showing the replaceable wet-end sensor plug and reusable electronics body.

Why the modular plug matters

  • The wet-end plug contains the sensing interface and calibration-critical analog components.
  • The main electronics body can remain in service across multiple refurbishment cycles.
  • Plug identity, calibration history, and deployment records remain linked to the measurements.
  • The architecture supports lower lifecycle cost and reduced material waste compared with short-life field electronics.
Deepod compact CTD held in one hand
Small size, practical mounting

Small enough to attach where larger CTDs are impractical.

Deepod is designed for practical mounting on field frames, buoys, moorings, lines, weights, vehicles, or existing research infrastructure.

  • Low handling burden for scientists, field teams, divers, and volunteers.
  • Suitable for dense deployment where multiple measurement points matter.
  • Useful as a baseline extension alongside conventional reference instruments.

Built for project-driven environmental field work.

Deepod is not intended to replace accredited reference instruments. It complements them by making broader baseline coverage practical and by adding deployment context, calibration traceability, and campaign-based data access.

Typical applications

  • Scientific CTD field campaigns
  • Low-cost distributed baseline monitoring
  • Short and medium-term coastal deployments
  • Citizen-science supported measurement programs
  • Environmental consultancy baseline extensions
  • Dense spatial surveys where reference CTDs are too sparse or costly to deploy everywhere
Deepod deployed underwater next to larger CTD instrumentation
Deepod mounted underwater next to a conventional Seabird instrument during field deployment.

Designed to work alongside existing instrumentation

Deepod is intended to complement larger and more expensive reference systems by making additional deployment points practical.

The small form factor allows the unit to be attached directly to existing research infrastructure, moorings, deployment frames, diver equipment, or larger CTD systems without significantly increasing handling burden.

Calibration visibility instead of hidden black-box measurements.

Deepod links each measurement to wet-end identity, factory calibration records, user one-point calibration history, deployment metadata, timestamps, and optional position data.

Factory multi-point calibration

Sensor plugs are factory characterized using controlled multi-point calibration workflows before delivery.

User one-point calibration

User one-point calibrations are stored as part of the plug history, allowing drift and correction trends to be reviewed over time.

Deployment-linked exports

Exported datasets can include measurements, calibration state, timestamps, position, deployment metadata, and wet-end history.

Controlled calibration workflow

Deepod plugs are calibrated in a controlled multi-point workflow using automated handling and reference liquids. The process is designed around repeatability, plug traceability, and practical long-term service handling.

Quick pre- and post-deployment checks help confirm expected sensor behavior before field use and after recovery.

Deepod factory calibration workflow
Factory multi-point characterization and calibration workflow for Deepod sensor plugs.
Deepod focuses on repeatability, calibration transparency, and deployment context. It is not positioned as an accredited compliance CTD or as a replacement for primary reference instruments where certified measurements are required.

Measurement context follows the deployment.

Deepod links measurements, wet-end identity, calibration history, timestamps, deployment metadata, and optional positioning into one deployment record rather than treating measurements as isolated files.

Wet-end identity

Each calibrated plug carries its own serial identity and calibration history, allowing measurements to remain linked to the exact sensing interface used during deployment.

Tracked calibration history

Factory characterization, user one-point adjustments, and calibration-related changes remain associated with the plug over time.

Deployment-linked exports

Exported datasets can include calibration state, deployment metadata, timestamps, positioning, and wet-end history together with the recorded measurements.

Deepod is designed around contextual field measurements where calibration state, deployment conditions, and sensor history remain visible alongside the measurement data.

Simple handling for campaigns and multi-device deployments.

Deepod is organized around deployments and campaigns rather than isolated instruments. Multiple devices can be grouped under one shared project workflow with lightweight access and export handling.

1. Configure

Project leads configure deployment profiles, sampling behavior, calibration checks, and campaign handling through the built-in web interface.

2. Deploy

Field users power on the unit and deploy it. LED feedback provides basic operational status without requiring technical interaction.

3. Offload and review

Measurements are stored locally first and transferred by Wi-Fi when available for review, campaign access, and export-oriented workflows.

Deepod avoids phone-app dependence during deployment. Optional built-in GPS and local storage support autonomous field operation in locations with poor connectivity.

Core specifications

Typical values depend on configuration and plug type. Final project suitability should be confirmed before deployment.

Measurements Conductivity, temperature, and pressure-derived depth. Optional optical and positioning features depending on configuration.
Depth rating Short-term use up to 100 m. Long-term deployment up to 30 m.
Weight Approximately 70 g depending on configuration.
Sampling Configurable from 1 Hz to long-interval RTC operation, including hourly, daily, or weekly scheduled measurements.
Communication Wi-Fi cloud offload via MQTT. Optional RS485 / Modbus variant for integration use cases.
Power Rechargeable internal Li-ion battery. Charging through external stainless charging pins and 5 V charging stand.

Data portal for campaigns and device review.

Current users can access deployment status, campaign summaries, device data, plug history, and export-oriented workflows through the Deepod web portal.

Deepod web dashboard showing campaign status, device summary, and deployment map
Deepod web dashboard with campaign status, device reporting, plug history access, and deployment map.

Existing customer access

The portal provides lightweight access for project leads and field users without requiring a dedicated phone app or account-based workflow.

Open Deepod data portal

Limited-batch supply for selected projects.

Deepod is currently available by direct contact for research groups, monitoring projects, and selected professional users. Production capacity is intentionally limited while the platform, calibration workflow, and service loop are scaled.

Contact

Sensoid Technologies AB
Snäckvägen 38
14139 Huddinge
Sweden

info@sensoid.se

Typical discussions include

  • Scientific deployments
  • Distributed monitoring campaigns
  • Citizen science projects
  • OEM or integration discussions
  • Calibration and workflow questions