Model 122 Interface Meters

Solinst Oil/Water Interface Meters give accurate measurements of product level and thickness in wells and tanks.

Determination of both floating non-aqueous liquids (LNAPL) and sinking non-aqueous liquids (DNAPL) is quick and easy. The factory-sealed probes are pressure proof and tapes are available in a range of lengths up to 1,500 ft. (450 m).

The 5/8" (16 mm) diameter P1 probe allows easy access through tight spaces and into narrow wells, making this the Interface Probe of choice for most applications. The 1.5" (38.1 mm) P2 probe has a glass cylinder covering the optics which is resistant to all chemicals. The extra weight of the P2 probe is useful on longer tape lengths and when DNAPL is being measured to ensure that the probe continues to hang straight in the well.

High Quality Design

The state-of-the-art electronics includes automatic circuitry testing when the 'On' button is used; extended battery life; clear signals; and high accuracy.

Infra-red refraction is used to detect liquids and conductivity to distinguish water. Both optical and electronic sensors are precisely at the zero point. A steady light and tone indicate product. Water is indicated by intermittent signals.

The factory sealed probes do not need to be accessed by the user, and the sensors of the P1 probe are protected by the user, and the sensors of the P1 probe are protected by an integral stainless steel shroud, which allows easy cleaning. The P2 probe has the emitter and detector protected behind a chemically resistant glass cylinder. Power is supplied by 2 standard 9V batteries, located in easy access drawers in the reel.