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THE 8400B FROM GUILDLINE INSTRUMENTS HAS BEEN THE LEADING SALINITY MEASUREMENT INSTRUMENT FOR OVER 20 YEARS.
The Guildline Instruments 8400B Salinometer utilizes a unique continuous flow system, which draws sample water under low air pressure from the original sample bottle. High-stability temperature control baths and heat exchangers allow the sample to be maintained at the precise temperature during analysis without temperature compensation. The bath has been improved so that the accuracy of the measurement is better than 0.002 Equivalent Practical Salinity Units (PSU).
This innovative continuous sampling system offers a significant increase in speed and convenience over the conventional salinometer method requiring several discrete samples for flushing and measurement.
It takes only 50 milliliters of sample water to obtain a final reading, including flushing. Semi-automatic operation provides a final digital readout of conductivity ratio in less than one minute, with a resolution of better than 0.0002 Equivalent PSU. The 8400B Salinometer has a redesigned sample bottle holder with easy access for the attachment of original sample bottles. A bottle data logging feature is built in as standard, which provides output of conductivity ratio, bottle number, bath temperature, and standardization reference number.
The temperature of the bath can be adjusted from 18 °C to 33 °C in 3 °C increments. The conductivity cell has a window for viewing the sample water flowing through it. Operating controls include conductivity range select, display function switch for zero, standby or read, bath temperature control check, standard seawater standardization set, temperature bath drain and fill controls, and a sample flow rate control which permits deep cold water samples to be measured immediately.
The 8400B Salinometer has many improvements in the design and layout of the instrument. Particular care has been taken to improve the power supply with better input filtering and a new cable harness. There is a heater failure lamp included on the front panel, and a front sub-panel reduces wear on the internal hoses, when the front door is opened for maintenance. There are also significant changes internally to improve ease of maintenance, such as access to the pumps.
