Marlin is a single-channel measurement transmitter instrument explicitly designed for use in aquaculture.
One of the critical advantages of Marlin is its water resistance, which means it can be used in various wet environments without fear of damage.
You can order Marlin with the probe of your choice to meet your specific needs:
Dissolved oxygen (electrochemical or optical)
Carbon Dioxide (CO2)
pH/Redox
Total Gas Pressure (TGP)
Temperature
Salinity
Ozone
Any other probe with 4-20 mA input (e.g. Model 420)
Compatibility:
Marlin features a 4-20mA output and MODBUS/TCP for PLC/SCADA compatibility, making integrating your existing systems easy.
It is also Cobália compatible, ensuring seamless communication with the Cobália digital management system.
Whether running a commercial aquaculture operation or simply monitoring the water quality in your backyard pond, Marlin is the perfect tool!
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The Model 420 is a membrane covered galvanic oxygen probe with built-in two-wire 4-20 mA transmitter. The probe is connected to a DC supply and draws a current of between 4 and 20 mA corresponding to the oxygen concentration.
There are only two wires to connect, and there is no limit to cable length. The output signal is galvanically isolated from the built-in electronics and the process fluid. Interference between the Model 420 and other equipment can never occur!
The OxyGuard Model 420 can therefore be connected directly to a wide range of equipment that can accept a 4-20 mA input, such as alarms, indicators, controllers, recorders, PLC’s, PC systems with A/D input etc.
The Model 420 can also be used to measure gaseous oxygen concentration.
D033 OxyGuard Model 420 DO Probe for 4-20mA
OxyGuard's developed ozone sensor is designed specifically for use in aquaculture. The sensor uses an entirely new innovative technology, and the partial pressure of ozone is measured directly without the use of electrolyte, reagents, light, or other traditional methods. As a result, there is almost no maintenance, the probe is exceptionally stable, and the response time is extremely fast.With the possibility to measure ozone content in the water down to only a few μg/L, it is possible to ensure safe conditions for the stock.
Unit of Measurement: ppm (mg/l) Measuriing Range (Low): 0-0.8mg/l (best between 0 and 0.5) Mesauring Range (High): 0.5-8mg/l Operating Temperature: 0-40C Dimensions: 40 x 104mm Cable Legnth: 7m Response Time: 90% in less than 45s (for the low range type) Medium: Water Installation: For use with Pacific or Marlin
G20 OxyGuard Ozone Sensor Data Sheet
The OxyGuard Standard Probe – the probe that revolutionised oxygen monitoring.The probe that you can purchase today is even better than the probe introduced in 1987 that helped revolutionize fish farming and make modern aquaculture the industry it is today. Today’s OxyGuard Standard Probe is hermetically sealed. If needed you can open it to replace the membrane and renovate it completely, but this should not be needed for many years.
DescriptionThe measurement stability of the OxyGuard Standard Probe is also very high indeed. A probe measuring in air will maintain accuracy even when subjected to a sudden 20 degree celcius temperature change. The sensitivity of a probe measuring in clean air at room temperature will remain the same for at least 3 years. This proves that the OxyGuard probe is not, like some other probes, affected by “ageing”. OxyGuard believe that the OxyGuard Standard probe is more accurate, needs less attention and maintenance and has a lower total cost of ownership than any other oxygen or dissolved oxygen probe offered to the aquaculture industry today. *Accessories are shipped with every OxyGuard probe. You will thus be able to change the membrane if you manage to damage it during installation. Otherwise the accessories can be enough for up to 5 years’ use.
These OxyGuard probes consist of an electrode and an impedance converter inside a twopart housing held together by a threaded collar. There is extra sealing so that the connections at the top of the electrode remain dry even when the probe is completely submersed. The impedance converter immediately over the electrode eliminates electrical noise problems and permits the use of ordinary cable to connect the probe. Either lightduty or heavy duty OxyGuard pH or redox electrodes with flange fittings can be used.
As standard probes are manufactured from PVC (for temperatures up to 60°C), but on request they can be supplied in other materials, e.g. PP for up to 10 bar at 25 °C, 4 bar at 90 °C, or PVDF for up to 6 bar up to 100°C, 2 bar at 120°C.
There are three basic designs, one for free mounting, one with a 3/4″ tee for flow-through use, the third designed to be screwed into a pipe, flange or other suitable fixture. The probes can be ordered with a 1″ thread at the top of the top part for mounting purposes. OxyGuard also manufacture probes to customer specification, so please ask if you cannot use a standard design. As standard the probes have 7m cables.
For Heavy Duty use in very dirty environments probes can be supplied with a probe cleaning system. This has, for example, proved effective when measuring agricultural slurry – add “C” to ordering number. Several types of mounting device are also available. These are described in separate brochures.
K01 OxyGuard Static pH / Redox Probe
High-quality pH7 calibration solution
Oxyguard pH7 Buffer is the ideal choice for calibrating and testing pH meters and probes. This premium calibration solution ensures accurate results every time, giving you peace of mind during your experiments or testing procedures. With a pH level of 7.00, this buffer solution is formulated to bring your pH meter back to its original factory settings, ensuring precise and reliable measurements.
Easy-to-use formula for hassle-free calibration
With Oxyguard pH7 Buffer, calibrating your pH meter is quick and effortless. Simply immerse your probe into the solution and adjust the readings accordingly to achieve accurate results. This buffer solution is easy to use, making it perfect for both beginners and experienced professionals in the field. Say goodbye to complicated calibration procedures with our convenient pH7 buffer solution!
Reliable and consistent results guaranteed
When it comes to pH calibration and testing, trust Oxyguard pH7 Buffer to deliver reliable and consistent results. Our high-quality formula ensures that your pH meter remains accurate and precise, providing you with the confidence you need in your lab or testing environment. Whether you are conducting research or performing routine measurements, Oxyguard pH7 Buffer is the perfect solution for all your calibration and testing needs.
The OxyGuard Polaris C CO2 Portable is a reliable and easy to use instrument that measures the free dissolved carbon dioxide concentration directly in the water. The CO2 concentration is shown on the display, and there is an analogue output.
The OxyGuard Polaris C CO2 measures the free dissolved CO2 directly and is not affected by carbonates or other dissolved substances. It is the free dissolved CO2 – in other words the CO2 gas partial pressure – that affects the fish. The OxyGuard Polaris C CO2 thus gives simple, continuous and direct measurements of the amount of carbon dioxide in the water that will affect the fish.
The analyser is easy to calibrate using the front panel “slope” and “zero” adjustments – after which you just put the probe in the water and measure. There is a salinity adjustment. Calibration intervals are long, and the OxyGuard CO2 does NOT need regular maintenance.
Hand-held oxygen and temperature meter with NFC tags and Bluetooth technology for easy data transfer to Cobália.
The Polaris C DO meter is a high-performance, low-cost and almost maintenance-free meter for measuring dissolved oxygen and temperature. The meter is sturdy, easy to use and has an extensive longevity making it ideal for harsh conditions.
Polaris C DO can store up to 2500 complete data sets, including time and date stamps. The logged data is stored in the meter or can be transferred to Cobália using Bluetooth.Scan the Cobália NFC tag of the tank and all data will be uploaded to your “digital farm”. Tank specific data assigned to the tags will be stored in Cobália for analyses on temporal variations, multivariable analyses on performance and for the generation of graphs.
The meter has a built-in self-check of all hardware, automatic barometric pressure compensation and a notably short response time. With this meter, you get the high-quality associated with OxyGuard technology and a product that will serve you well for many years.
Instruction Manual
The OxyGuard Polaris C MaxiTemp is a small electronic thermometer specially designed to meet the demands of fish farmers and other professional people for a rugged, reliable and accurate thermometer with data logging function. It has a measuring range of -5 to +45°C with an accuracy of +/- 0.1°, and will measure up to +60°C with an accuracy of +/- 0.2°C. The probe is manufactured in plastic and sea-water resistant stainless steel, and is connected to the display with a 1.5 m cable. Both probe and display are sealed and waterproof.
Values can be stored either automatically at preset time intervals, or manually. You can group values according to the place of measurement. Stored values can be transferred to a PC using the Polaris Link, which connects to the PC via a USB cable.
The Polaris C pH is a hand-held, pocket-size pH hand-held meter designed for use in demanding, wet environments. The meter itself and the electrode assembly are waterproof. This instrument does not suffer from the classical problems associated with pH meters – the Polaris C pH is sealed so that water cannot enter the top of the electrode or the electronics. You can drop it into the water without damaging it. In the Polaris C pH these advantages are combined with microprocessor technology to provide an instrument that is exceptionally easy to use.
Measuring Range: -1 to 15 pH
