Introduction - Geotech IM1.1-20 Manual Del Usuario

Oil Water Interface Meter
020365 ISS.07
3.

Introduction

The Interface Meter is used to determine the thickness of floating product above the water
table. It can also detect and measure sinking layers of DNAPLs.
The Interface Meter is designed and built by experienced field engineers and hydrogeologists
who recognise and respond to the needs of the environmental monitoring market. The unit is
extremely simple to use – the probe is lowered down a borehole or well casing and on
contact with product a single tone and a steady light are triggered at the reel. When the
probe reaches water, the tone becomes intermittent and the light flashes. By carefully
recording the length of tape (from a fixed reference) to reach these two points, the product
thickness can be calculated.
The Interface Meter incorporates a number of features to ensure reliable and efficient
measurement of the oil/water interface.
The tape reel is of metal construction with stainless steel fittings. A unique hook on the frame
allows the meter to hang on a borehole casing - useful during recovery and draw-down
testing.
Electronics are fully encapsulated to protect against water and mechanical damage, ensuring
a long and trouble-free life. The electronic module is easily removed allowing de-
contamination of the unit. The meter is powered by one 9 volt battery located in the reel
module, easily removed without dismantling the reel.
Quality engineered tapes are resin-jacketed high tensile steel for strength and incorporate
two durable stainless steel conductors. Tapes are available marked in metric and imperial
units and the standard length is 30m - with longer version units made to order.
The stainless steel probe is ultra-slim - only 15mm in diameter. It is designed to be used in a
wide range of well diameters down to 19mm. The probe/tape joint is a unique Viton and steel
link which prevents excessive stress at this point.
The unit is supplied complete with the following accessories:
 Carrying Bag
 Cleaning Kit
 Instruction manual
Page 6 Geotech (UK) Limited