Submersible oil-in water probe
August 1st 2010

Even the slightest contamination by mineral oil in industrial, process and surface water can be detected by the new FP 360 sc immersion probe from Hach Lange.

FP 360 sc uses a highly sensitive ultraviolet fluorescence method for oil detection. As most mineral oils contain polycyclic aromatic hydrocarbons (PAH), their concentration can be used to calculate the oil content of water.

When PAH are exposed to ultraviolet radiation, they emit fluorescent light at an intensity which is directly related to their concentration.

Measuring the intensity of this fluorescence is a sensitive method of determining PAH.

With a front diameter of only 1mm, the new Type 6188A combined temperature and pressure sensor is described by Kistler Instruments as a milestone in the miniaturisation of sensors. Designed primarily for precision monitoring of melt temperature and cavity pressure in injection moulding, the company expects the sensor to find many other applications in manufacturing, research, and development.

The Type K thermocouple is mounted at the front of the sensor to provide rapid response to temperature changes. The connecting wires to the thermocouple are threaded through the pressure sensor elements, which share the front face of the sensor.

The device allows the injection moulding process to be monitored to provide high-level quality assurance and zero rejects, especially when small or precision products are being produced.

The FP 360 sc immersion fluorometer is suspended directly in the measurement medium with the help of a chain mounting set.With the help of an optional flow cell, the probe can also be installed for bypass applications. The standard model is in stainless steel; a titanium housing enables the probe to be used in aggressive

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