RS485 Fluorescence Dissolved Oxygen Sensor (Seawater)

SKU: SEN0681 Brand: DFRobot

Measure DO in seawater with this RS485 fluorescence sensor. IP68, maintenance-free, and ModBus-ready. Ideal for mariculture and ocean monitoring...

$357.30 AUD, inc GST

$324.82 AUD, exc GST

Available with a lead time
Expect dispatch between Nov 27 and Dec 01

This RS485 Fluorescence Dissolved Oxygen Sensor is an advanced monitoring instrument specifically engineered for high-salinity applications. It operates on the principle of fluorescence quenching to provide stable, accurate readings across a 0-20 mg/L (0-200% saturation) range. Unlike traditional electrochemical sensors, this method eliminates the need for electrolytes and avoids electrode polarization, ensuring long-term reliability with minimal maintenance. Featuring an industrial-standard RS485 ModBus-RTU interface, a wide 10-30V DC power supply, and automatic temperature compensation, this sensor is designed for easy integration and dependable performance in demanding marine environments.

Probe of RS485 Fluorescence Dissolved Oxygen Sensor

Optimized for Saline Environments

This seawater version is specifically designed for high-salinity waters. It utilizes specialized calibration and advanced algorithms to accurately compensate for the effects of salinity on dissolved oxygen measurement, ensuring reliable data integrity in oceans and marine aquaculture farms.

Stable Fluorescence Measurement

The sensor measures the phase difference between an excited red light and a reference light, a value inversely proportional to the oxygen concentration. This fluorescence-based method does not consume oxygen during measurement and requires no electrolyte replacement, drastically reducing operating costs and service frequency.

Stable Fluorescence Measurement of S485 Fluorescence Dissolved Oxygen Sensor

Robust IP68 Stainless Steel Construction

Built to withstand harsh marine conditions, the probe is constructed from 316 stainless steel. It features an overall IP68 waterproof rating, providing excellent resistance to corrosion, salt, and alkali. This durable design ensures continuous operation in submerged, high-pressure (up to 0.6MPa) environments.

RS485 ModBus-RTU Interface

Equipped with an RS485 communication interface supporting the standard ModBus-RTU protocol, the sensor is easily integrated into PLCs, data loggers, and other industrial monitoring systems. A built-in temperature sensor provides real-time data and enables automatic temperature compensation, further guaranteeing measurement accuracy.

Specification

Power Supply: DC10-30V

Power Consumption: 0.2W

Communication Interface: RS485 (Standard ModBus-RTU Protocol)

Measurement Principle: Fluorescence

Measuring Range: 0-20mg/L, 0-200% Saturation

Measurement Error: ±3% FS; ±0.5°C (25°C)

Resolution: 0.01mg/L; 0.1%; 0.1°C

Response Time: =60s

Operating Temperature: 0-40°C

Fluorescent Film Lifespan: 1 year under normal use

Waterproof Rating: IP68

Pressure Resistance: 0.6MPa

Cable Length: 5m

Casing Material: Corrosion-Resistant Plastic

Documents

Product wiki

Product Comments

Start the conversation

Exact shipping can be calculated on the view cart page (no login required).

Products that weigh more than 0.5 KG may cost more than what's shown (for example, test equipment, machines, >500mL liquids, etc).

We deliver Australia-wide with these options (depends on the final destination - you can get a quote on the view cart page):

$3+ for Stamped Mail (typically 10+ business days, not tracked, only available on selected small items)
$7+ for Standard Post (typically 6+ business days, tracked)
$11+ for Express Post (typically 2+ business days, tracked)
Pickup - Free! Only available to customers who live in the Newcastle region (must order online and only pickup after we email to notify you the order is ready). Orders placed after 2PM may not be ready until the following business day.

Non-metro addresses in WA, NT, SA & TAS can take 2+ days in addition to the above information.

Some batteries (such as LiPo) can't be shipped by Air. During checkout, Express Post and International Methods will not be an option if you have that type of battery in your shopping cart.

International Orders - the following rates are for New Zealand and will vary for other countries:

$12+ for Pack and Track (3+ days, tracked)
$16+ for Express International (2-5 days, tracked)

If you order lots of gear, the postage amount will increase based on the weight of your order.

Our physical address (here's a PDF which includes other key business details):

40 Aruma Place
Cardiff
NSW, 2285
Australia

Take a look at our customer service page if you have other questions such as "do we do purchase orders" (yes!) or "are prices GST inclusive" (yes they are!). We're here to help - get in touch with us to talk shop.

Have a product question? We're here to help!

Write Your Own Review