PME miniDOT Dissolved Oxygen Logger

The PME miniDOT Logger is a completely submersible instrument that logs dissolved oxygen and temperature measurements.

Features

  • Long-lasting sensor with stable calibration
  • Up to 1-year battery life with user-replaceable batteries
  • Also records time, date, and battery voltage
Your Price Call
Stock 4AVAILABLE
PME miniDOT Dissolved Oxygen Logger

Overview
The PME miniDOT is a submersible instrument that includes an optical dissolved oxygen sensor, a temperature sensor, batteries and a micro SD memory card. Data is recorded internally with a sample interval from once per minute to once per hour and can be offloaded to a computer via USB cable.

Internal Storage
The miniDOT sensor is an optode that measures lifetime-based luminescence quenching of a thin membrane. The sensing foil contains a coating with a variable fluorescence that depends on oxygen concentration in the surrounding water. The sensor can compute dissolved oxygen concentration in mg/L and record these measurements internally. Each logger is factory-calibrated at 12  dissolved oxygen concentrations, each at 8 temperatures, for a total of 96 calibration points.

Questions & Answers
How does the miniDOT measure dissolved oxygen?
The PME miniDOT determines DO in water using an optode that measures flourescence.
What software comes with the dissolved oxygen logger?
The PME miniDOT includes free Java-based Windows software for configuration the logger and offloading data. The software will also compute oxygen saturation from the miniDOT logger measurements. A USB to micro USB cable is sold separately and required to communicate with the logger.
How long will the battery last?
With a 1-minute sample interval, the logger will remain powered for approximately 1-year.
What are the recommended replacement batteries for the miniDOT logger?
PME states that Alkaline batteries are good for short deployments, where lithium batteries are best for longer deployments, or deployments in cold environments. Battery life and other options are discussed further on page 10 of manual.
Did you find what you were looking for?

Select Options

  Products 0 Item Selected
Image
Part #
Description
Price
Stock
Quantity
PME miniDOT Dissolved Oxygen Logger
7450
miniDOT dissolved oxygen & temperature logger
Request Quote
4 Available
PME miniDOT Dissolved Oxygen Logger
9190
miniDOT dissolved oxygen & temperature logger with miniWIPER anti-fouling sensor wiper & miniDOT bracket attachment
Request Quote
2 Available
  Accessories 0 Item Selected
Notice: At least 1 product is not available to purchase online
×
Multiple Products

have been added to your cart

There are items in your cart.

Cart Subtotal: $xxx.xx

Go to Checkout

In The News

Going, Going, Gone: Endangered Species Recovery and Conservation

Across the planet, biodiversity and natural habitats are declining dramatically. Countless species of flora and fauna around the world are being listed as either threatened, endangered, or extinct. According to a 2019 UN Study , around one million species are already at risk of extinction. Unless action is taken to reduce the causes of biodiversity loss, many of these species could disappear within the next few decades. Invasive species, habitat destruction, pollution, and other environmental stressors are all major causes of biodiversity decline. While high biodiversity is synonymous with places like the Amazon Rainforest and the Great Barrier Reef, it can also be found locally.

Read More

CastAway Doubts about Conductivity, Depth and Temperature Monitoring

The Sontek CastAway-CTD is a castable device that measures conductivity, temperature and depth. The instrument has been used in the field for over a decade by oceanographers, limnologists, divers, fishers and educators. There have been few changes since the first iteration in 2010, showing that the instrument is durable and accurate without requiring new models.   The CastAway is the first conductivity, temperature and depth (CTD) instrument of its kind. While other CTDs are large and cumbersome to deploy, with cages and isolated sensors, the CastAway is a small, lightweight and easy-to-use instrument. Typical CTDs utilize pumps to ensure water flows over the sensors during deployment.

Read More

Dimethyl Sulfide: A Key to Marine Sulfur Biogeochemistry

Christopher Spiese is assistant dean at the Getty College of Arts & Sciences, acting director of the school of social sciences and human interaction, and associate professor of chemistry at Ohio Northern University. He is also a marine sulfur enthusiast. Marine sulfur biogeochemistry, which involves the cycling of sulfur through aquatic biological and geological systems, is essential for the functioning of marine life. However, the exact chemistry involved is not entirely known, piquing the interest of researchers like Spiese. “I went into marine sulfur biogeochemistry during my graduate work. I completed a doctoral environmental chemistry program at SUNY College of Environmental Science and Forestry (SUNY-ESF) under David Kieber.

Read More