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
Standard Service for your OxyGuard Polaris Unit. Standard Service includes
Inspection & Assessment
Replace Membrane, O-Ring and electrolyte
Probe Renovation
Calibration
Certificate of Calibration
UK Shipping of Instrument back to you.
This service is available for;
OxyGuard Polaris
OxyGuard Polaris 2
OxyGuard Polaris C
Note. Any issues/failures identified during service will be quoted for your consideration
The OxyGuard Handy Polaris TGP (Total Gas Pressure) Meter is a hand-held gas pressure meter that doubles as a dissolved oxygen meter. It can operate in three display modes- as a standard Handy Polaris dissolved oxygen (DO) meter, as a TGP meter displaying percent saturation, or as a TGP meter displaying pressures as volume percentage values. The user can choose which value is shown on the display.
DescriptionThe instrument also incorporates a data logger. Menu functions, along with an intuitive interface, make the Handy Polaris TGP/DO/Temperature meter easy to use for novice and experienced users alike. The OxyGuard Handy Polaris TGP/DO/Temperature Meter also includes a membrane kit (10 O-rings/10 membranes), 50 ml electrolyte, membrane installation tool, and cathode cleaning pad.
Technical AdvantagesMeter The Polaris 2 TGP is designed for easy use and to give accurate here-and-now measurements of both the dissolved oxygen and the dissolved rest gases - i.e. the gases that can cause decompression sickness - “the bends” - in fish. This is achieved because the instrument measures all three pressures needed - the dissolved oxygen, the total dissolved gas and the atmospheric. Maintenance is easy - the DO measurement is made using the well-known OxyGuard Handy probe, and the TGP measurement tube sensor element can easily be exchanged if necessary. Probe The OxyGuard TGP probe can be directly connected to OxyGuard Commander, Convoy and Pacific systems. It can only be used with these systems. It does not need a separate transmitter or input unit, but communicates values directly. Only one field bus data cable connection is needed - the cable has cores for both data and the 24 V DC supply needed by the probe. The TGP is designed for easy use. The measurement tube is wound on a central bobbin that is held in place by the protector. If the tube becomes fouled you simply unscrew the protector, unplug the bobbin and tube and fit a replacement. Precise measurements are obtained by placing the TGP in the air and matching - or calibrating - the TGP against the barometric pressure sensor of the DO Meter or Pacific of the system. This means that a very accurate value of the difference between the gas pressure in the water and the gas pressure in the air can be obtained. The pressure measurements can also both be calibrated against the absolute value of the barometric pressure if this is known accurately. The TGP has the same diameter as a standard OxyGuard probe so that standard mounting devices can be used.
Specifications
Dimensions: Meter 98 mm diameter x 36 mm
Probe: 58 mm x 110 mm + cable gland
Cable Length: Standard 3 m. Other on request.
Operating Conditions: Probe: -5 to +45°C, meter -20 to +60°C.
Encapsulation (meter): Short-term immersion proof to 5m depth.
Display: Graphical LCD display. Variable backlight.
Parameters measured: Oxygen partial pressure, atmospheric pressure, total dissolved gas pressure, temperature at probe.
Parameters displayed: DO in mg/l, % sat, % vol. TGP in % sat. Rest gas in % sat, % vol. Temperature in °C or °F.
Measuring range, DO: 0-60.0 ppm (mg/l), 0-600% saturation and 0-60% vol.
Oxygen Probe Type: Galvanic cell, self polarizing, self temperature compensating. DO measurement automatically compensated for temperature and barometric pressure. Manual salinity compensation between 0-59 ppt salinity. DO accuracy depends on calibration accuracy. Typically better than +/- 1% of measured value +/- 1 digit within the standard measuring range. DO measurement repeatability typically better than +/- 0.5% of measured value. Response Time (DO) 90% of end value in less than 20 seconds in water.
Measuring range, pressures: to over 200% sat, 2 bar. Accuracy +/- 2% of value
Measuring range, temp: -5 to +45°C. Accuracy +/- 0.2°C.
Self-check of: Probe function, meter function, cable, battery.
Accessories included: Storage pouch, DO probe membranes with O-rings and electrolyte, cathode cleaning pad, storage pouch.
The OxyGuard Salinity Probe is specially designed for aquaculture use. Factory calibration and automatic temperature compensation make it very easy to use. It is found in two versions. One is a 3-wire 4-20 mA sensor – connect it to 24 VDC and the output varies between 4 and 20 mA according to the salinity. The other has data bus connection for use with OxyGuard Pacific.
The probe is designed to be as trouble-free as possible, with features specially suited for aquacultural use. Inductive technology is used so that you don’t have to worry about deposits on the surface of the probe – all you have to do is ensure that the hole in the probe is open and relatively clean.
The probe measures salinity according to the internationally agreed PSS-78 scale (Practical Salinity Scale 78).
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.
The 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.
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.
The 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.
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.
The 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.
The OxyGuard Commander probe is a membrane covered galvanic cell that generates an electrical signal proportional to the oxygen pressure it senses. The probe is designed for use in applications across the aquaculture industry and is capable of measuring oxygen in clean water, waste water, and air for ambient monitoring. It requires neither an applied voltage nor microprocessor controlled electronics in order to function.
Even in the most demanding aquaculture applications the OxyGuard Commander probe can keep its calibration for about a year and operate for three to five years before membrane replacement is needed.
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!
Download Brochure
OxyGuards new optical oxygen probe is developed in cooperation with world leading experts. Based on luminescence quenching of a sensor dye immobilized on a support foil it can be used for gas measurements as well as for dissolved oxygen (DO).
The presence of molecular oxygen quenches the luminescence, changing its intensity and lifetime fully reversibly. The measurement principle is very robust. It shows virtually no interference to other gases and has very low drift. Bleaching is not an issue because low energy red light excites the sensor spot and emission is NIR.
Special features
High-accuracy measurements of oxygen in gas or water (DO)
Low drift
Long lifetime
Fast response
Digital output of all major oxygen units
Technical Data Sheet
