The Seta Salt-in-Crude Analyser is a robust and portable instrument for determining the chloride (salt) content of crude oils in full conformity to ASTM D3230, IP 265 and equivalent test methods.

The Seta Salt-in-Crude Analyser is pre-calibrated and automatically displays salt concentration measurements in g/m3 or lbs/1000bbl (pounds per thousand barrels), this avoids the need to mix salt calibration standards and makes testing a simple and fast procedure.

FEATURES

Pre calibrated for immediate use to ASTM D3230

Salt concentration values displayed automatically

No need for mixing of salt standards

Typical test time of less than 30 seconds

Moisture proof membrane touch screen with large keys

Calibration modes allow verification using user standards

RS232 - PC compatible

Fully portable, all items contained in aluminium carry case

Supplied with beaker and sensor support stands

Optional bench top stand (see photo)

Interchangeable plug-in sensor

Battery or mains power supply

Elevated salt concentrations in crude oil may result in higher corrosion rates of refining units. The measurement of salt content is made to determine if desalting of crude oil is required or to test the efficiency of the desalinisation process. Typically, the concentration is reported as pounds of NaCl per thousand barrels (PTB) of crude oil.

The compact Herzog SC 960 Salt in Crude tester automatically measures the salt content of crude oil in a solvent solution as specified in ASTM D 3230. The instrument applies a low level excitation voltage and measures the conductivity. The microprocessor compares this value to the current calibration (that has been memorised), and displays the salt content. This technique eliminates the need to work with a high voltage cell and reduces the safety risks of the operator.

Features & Benefits

• Working lower detection limit of 0.2 ptb
• Safe, low voltage design with cell isolated from electronics to reduce hazards from solvent spillage
• User settings for high low alarms
• RS-232 and analog output
• Compact design conserves valuable bench space

Advantages

• Accurate determination of salt content in crude oil
• Display of salt content in user units
• Simple and easy to use
• Multi-calibration capacity with NEW HLIS32-SC software

Operation
A 15ml crude oil sample is equilibrated with xylene and then diluted with mixed alcohol solution. The solution is then transferred into the measurement beaker and the stainless steel electrode assembly is inserted. The SC 960 automatically measures the resulting conductivity and displays the salt content corresponding after having rated this content with the inboard calibration table that has been previously developed.

Calibration
Initial and periodic calibrations for Herzog SC 960 are performed by Windows software HLIS32-SC with SC 960 connected to a computer through RS232C interface. The supplied software allows collection of new calibration data, edition of existing data and generation of the calibration tables which will be used in the instrument. Up to two calibration tables can be transferred to the analyser at a time, and the SC 960 will operate in stand alone.

SC 960 Product Brochure

Specifications