Icon Scientific Pp Online Pour Point Analyzer

The pour point is the temperature at which a liquid semi-solidifies and loses its flow. The Pp analyzer cools the sample step by step in a small cell; at set temperature intervals, a stepper-motor piston gives the sample a small pulse, and a differential pressure sensor checks whether the sample has moved. When the pulse no longer creates movement, that temperature is taken as the pour point; the cell is heated and flushed.

Pour Point (Pp) features

• Results compliant with ASTM D97, D5853, D5949 and D5985.
• Auto-ranging feature that adjusts the measurement range itself when the product changes; suitable for lubricating oil blends and diesel.
• Most applications need no cooling water, purge gas or instrument air; a version with a cryo-cooler is available for very low temperatures.
• Modbus RTU (RS485), Modbus over Ethernet and 4-20 mA output; touchscreen.
• ATEX, IECEx, TIIS and ETL (Class 1 Div 1 Group CD) approvals apply according to the application.

Choosing Pour Point (Pp)

The instrument performs cooling in a sealed vacuum vessel; the vacuum is monitored and the user is warned if the sample leaks. It has automatic verification and calibration options and comprehensive internal diagnostics; it is also used to control different blends in lubricant production.

Tetra plans mounting and communication connections suited to the explosive atmosphere class, and helps on site with maintenance of the piston, pressure sensor and vacuum monitoring and with automatic verification settings.