Geotech Interface Probe with Float Manuale utente

Rev 07/05/2016 Part # 12050096

Interface Probe

with Float

Installation and Operation Manual

Table of Contents

SECTION 1: SYSTEM DESCRIPTION .............................................................................. 4

SECTION 2: SYSTEM INSTALLATION ............................................................................. 6

SECTION 3: SYSTEM OPERATION.................................................................................. 8

SECTION 4: SYSTEM MAINTENANCE........................................................................... 10

SECTION 5: SYSTEM TROUBLESHOOTING................................................................. 10

SECTION 6: SYSTEM SPECIFICATIONS....................................................................... 12

SECTION 7: SYSTEM SCHEMATIC................................................................................ 13

SECTION 8: REPLACEMENT PARTS LIST .................................................................... 14

THE WARRANTY............................................................................................................. 17

NOTE

DOCUMENTATION CONVENTIONS

This uses the following conventions to present information:

An exclamation point icon indicates a WARNING of a situation

or condition that could lead to personal injury or death. You

should not proceed until you read and thoroughly understand the

WARNING message.

WARNING

CAUTION

A raised hand icon indicates CAUTION information that relates to

a situation or condition that could lead to equipment malfunction

or damage. You should not proceed until you read and thoroughly

understand the CAUTION message.

A note icon indicates NOTE information. Notes provide additional

or supplementary information about an activity or concept.

The following applies only to users in European countries:

This product is designated for separate collection at an appropriate collection

point. Do not dispose of as household waste.

For more information, contact the seller or the local authorities in charge of waste

management.

Notice for consumers in Europe:

This symbol indicates that this product is to be collected

separately.

Section 1: System Description

Function and Theory

The Geotech Interface Probe with Float is a portable instrument used to accurately

measure water and hydrocarbon layer thickness in monitoring wells. The unit consists of a

stainless steel and PTFE probe attached to a reel-mounted, Kynar-coated engineer’s

tape. The engineer's tape comes in standard or metric graduations, and is accurate to

1/100th of a foot, or 1 millimeter. The probe also contains a float which detects

hydrocarbon levels and a pair of stainless steel contacts for sensing conductive fluids.

The Interface Probe reel has an audible signal and a visible red LED which are activated

when the probe reaches water or product. The unit features an auto shutoff circuit to

prevent battery discharge. This auto shutoff circuit allows the instrument 10 minutes of

continuous operation before the unit shuts off.

When the probe is lowered down a well and contacts any fluid with a specific gravity of .60

or greater, the stainless steel contacts and float will activate the visible and audible

signals. If the fluid is non-conductive, the LED will be red and a solid tone will sound. If

the fluid is water or other conductive fluid, the conductive contacts will cause the LED to

turn green and the tone will oscillate. If the probe is lowered through the water layer to a

non-conductive layer (such as DNAPL) the tone will go solid again and the LED will return

to red.

The Geotech Interface Probe with Float is intended for use as a depth to water or product

measuring device. Using the Interface Probe for any other purpose may compromise

safety of the operator and/or void manufacturer’s warranty.

To avoid damage to the tape and strain relief, do not over tighten

the reel with probe when placed in storage.

System Components

Figure 1-1 –System Components

Measuring Tape

The specially coated measuring tape connects the probe with the reel assembly and

provides an accurate means of measuring the distance from the well head or tank port to

the air/water, air/oil or oil/water interface. The tape contains all the wires running between

the probe and the circuitry in the housing assembly. Engineering tape assemblies are in

decimal feet and Metric tape assemblies are in meters (down to millimeters).

Section 2: System Installation

The reel frame has a metal loop called the “hanger”. The hanger can be used to hang the

reel frame onto the well casing (as shown in Figure 2-1). The tape can then slide easily

over the side of the reel leg.

Figure 2-1 Reel frame on well casing.

If you are not able to hang the frame onto the well head, then either use the white plastic

leader guard (standard with all units), or the optional Tape Guide, to prevent the edge of

the well head from damaging the tape. Figure 2-2 is an example of the two parts.

Figure 2-2 Tape Leader Guard and Tape Guide

Do not use the tape leader guard in wells larger than 4”

(10cm), as it may fall down the well.

Section 3: System Operation

Verify Operation of the Probe

Test the battery by pressing the "ON/TEST" button. If the buzzer makes a loud signal and

the LED is visible, the battery is adequate for normal operation. Pressing the "ON/TEST"

button provides 10 minutes of operation.

Test the instrument operation. Remove the probe from the retaining clip and raise the

phenolic float. When the float switch triggers, the visible signal will be red and the audible

signal will emit a steady tone. With the float still raised, moisten your fingers and touch

the float shaft and the conductive contact. If the battery is properly charged, the visible

signal will turn green and the tone will oscillate. Successful completion of these tests will

indicate that the unit is operating properly.

Measuring Fluid Levels

Lower the probe down the well until the signals activate and then read the measurement

at the top of the well casing or other reference point. Record this figure as the first fluid

level.

Continue to lower the probe until the signals change. Record the measurement at the

reference point as the second fluid level.

To determine the product layer thickness, subtract the first reading from the second

reading.

Measuring Water Levels in Product-Free Wells

If the probe immediately emits a green light, nonconductive fluids are absent from the

surface of the water.

Storage

If the KIR is not used and is stored for longer than three (3) months, remove the battery to

prevent battery leakage, which can cause internal damage.

To avoid damage to the tape and strain relief, do not over tighten

the reel with probe when placed in storage.

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