The Polaris 2 TGP is designed for easy use and to give accurate here and now measurements of the Total dissolved Gas Pressure. The instrument also has a dissolved oxygen and temperature sensor and can display values of Total Gas, Dissolved Oxygen and Residual Gas, i.i. gas other than oxygen. These can be shown as % saturation values or as volume % values.

The Handy TGP can also be used as a standard Polaris 2 DO meter.

Maintenance is easy. The DO measurement is made using the well-known Handy Probe, and the TGP measurement tube sensor element can easily be exchanged if necessary.

 

• Dimensions, meter: Diameter 98mm, height 36mm
• Dimensions, probe: Diameter 58mm, length 110mm + cable gland
• Cable length: Standard 3m, other on request
• Operation 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 ranges: DO 0-60.0 ppm (mg/l), 0-600% saturation and 0-60% vol Temperature -5 to +45°C, Pressures to over 200% sat, 2 bar
• Accuracy: DO accuracy depends on calibration accuracy. Typically better than +/- 1% of a measured value +/- 1 digit within the standard measuring range. Pressure measurement accuracy +/- 2% of value. Temperature measurement accuracy +/- 0.2°C
• Repeatability: DO measurement, typically better than +/- 0.5% of measured value
• Oxygen Probe Type: Galvanic cell, self-polarising, self-temperature compensating
• Compensation: DO automatically compensated for temperature and barometric pressure, manually compensated for salinity
• Self-check of: Probe function, meter function, cable, battery
• Accessories included: Storage pouch, DO probe membranes with O-rings, electrolyte, cathode and cleaning pad.