Solinst Oil/Water Interface Meters give clear and accurate measurements of product level and thickness in wells and tanks.
Determination of both light (floating) non-aqueous phase liquids (LNAPL) and dense (sinking) non-aqueous phase liquids (DNAPL) is quick and easy. The factory-sealed probe is pressure proof (up to 500 psi) and tapes are available in a range of lengths from 100 - 1000 ft (30 - 300 m).
The 5/8" (16 mm) diameter probe allows easy access through tight
spaces and into narrow wells. The probe is designed for use in various
monitoring applications. 122M Mini Interface Meters also available, see
122M Data Sheet for more information.
Hazardous Locations Use
Model 122 Interface Meters have been approved for use in explosive environments. They are suitable for use in hazardous locations Class I, Div 1, Groups C&D based on standards of the Canadian Standards Association (CSA).
The Model 122 Interface Meter with laser marked PVDF tape is now ATEX certified under directive 94/9/EC, as II 3 G Ex ic IIB T4 Gc.
Operating Principles
Product (Non-conductive liquid) = Steady light and tone Water (Conductive liquid) = Intermittent light and tone To detect liquids, Solinst Interface Meters use an infra-red beam and detector. When the probe enters a liquid the beam is refracted away from the detector which activates an audible tone and light.
If the liquid is a non-conductive oil/product the signals are steady. If the liquid is water (conductive liquid greater than 20 µS/cm), the conductivity of the water completes a conductivity circuit. This overrides the infra-red circuit, and the tone and light are intermittent.
The 122 Interface Meter sensor provides an accuracy as good as 1/200 ft or 1.0 mm. The high accuracy enables the sensor to detect the slightest sheen of oil on the surface of the water.
Accurate, Reliable, Robust
• Designed for rugged field use
• Stable electronics with automatic circuitry testing
• Laser marked PVDF flat tape is easy to decontaminate; resists stains
• Tape uses stranded stainless steel and copper coated steel conductors:
- high in tensile strength; electrical efficiency
- non-stretch; does not corrode
• Sturdy free-standing reel with carrying handle
Features
• Sensor accuracy to 1/200 ft or 1.0 mm
• Certified intrinsically safe
• 5/8" (16 mm) diameter probe
• Easy access 9V battery
• Automatic shut off after 10 minutes
• Replacement tapes are interchangeable with other Meters
Laser Marked PVDF Flat Tape
The PVDF flat tape is extremely accurate, traceable to NIST and EU measurement standards.
The easy-to-read markings on the 3/8" (10 mm) PVDF flat tape are permanently laser-marked. The dog bone shaped tape avoids adherence to wet surfaces in wells. It is resistant to most chemicals, and the smooth surface of the tape is easy to decontaminate and easy to handle.
LM3: Meters and centimeters: with markings every mm.
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