Dissolved Oxygen Sensor

Black cylindrical sensor device with a blue lever inside a protective ring at one end.

SPOTTER PLATFORM

Dissolved Oxygen
Sensor

Add a compact, long-dwell dissolved oxygen sensor to your Spotter Platform to monitor dissolved oxygen concentration and saturation in real time.

An integrated anti-fouling wiper and ultra-low power solar-rechargeable battery enables extended deployments and continuous access to water quality insights.

Explore Configuration

Sensor Specifications

Download the Spec Sheet

Sensor

PME MicroDot Plus (DO + Temperature)

Sensor Type

Optical

Dissolved Oxygen

Accuracy: ±5% or ±0.3 mg/L
Resolution: 0.001 mg/L (1 µg/L)
Range: 0 – 150% saturation

Temperature

Accuracy: ±0.1°C
Resolution: 0.001°C
Range: 0°C – 35°C

Oxygen Response Time

~30s to 90% step change

Sampling Rates

5 s to 24 hr interval, user-set

Calibration Method

96-point factory calibration

Maximum Depth

50 m

Power Supply

Spotter’s Li-ion battery (solar-rechargeable)

Size (Dia. x Len.)

~76 mm × 203 mm

Weight

0.34 kg (< 0.75 lb)

Interface Standard

Bristlemouth-native (plug-and-play)

Anti-Fouling Wiper

Close-up of a cylindrical black device with a blue lever and metal screws, showing mechanical detail.

This submersible, self-contained device uses a rotating brush to sweep the sensor surface, reducing organism growth and preventing biofouling. After each pass, the brush retracts to avoid interference, ensuring accurate, continuous monitoring.

Deployment & Best Practices

Configuration Options
Ideal for moored coastal deployments with one Spotter or a network.Integrate up to two more devices (e.g. pressure/current) per Smart Mooring (max 3 total).

Mounting and Maintenance
Mount sensor horizontally; avoid sediment or bubble interference. Rinse sensor with fresh water after retrieval. Clean sensing foil periodically; verify calibration annually.

Remote Configuration & Controls
Direct control via Spotter Dashboard, binary/ASCII commands, and Sofar remote support.

Explore Configuration

Data Access & Analysis

Dashboard of oceanographic data from Pier 40 SPOT-8468 for March 22-24, 2025 showing subsurface temperature and dissolved oxygen concentration graphs, wave spectrum, map location, wind speed and direction, Beaufort number, significant wave heights for bulk, sea, and swell, sea surface temperature, barometric pressure, and current sensor data.

Spotter Dashboard
View real-time data and insights

API Access
Retrieve data programmatically with our secure API

Onboard Storage
Download data via SD card for offline analysis

Transmission
Satellite and cellular options

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