Geotech Keck Interface Probe User manual

Rev. 3 02/25/03 Part # 12050096
Keck Interface Probe
Installation and Operation Manual

Table of Contents
CHAPTER 1: SYSTEM DESCRIPTION..................................................................... 5
FUNCTION AND THEORY ................................................................................................ 5
SYSTEM COMPONENTS................................................................................................... 6
CHAPTER 2: SYSTEM INSTALLATION .................................................................. 7
CHAPTER 3: SYSTEM OPERATION ......................................................................... 8
KECK KIR DNAPL CORRECTION FACTORS........................................................ 9
CHAPTER 4: SYSTEM MAINTENANCE................................................................ 10
CHAPTER 5: SYSTEM TROUBLESHOOTING ..................................................... 11
TROUBLESHOOTING CONTINUED.................................................................................. 12
CHAPTER 6: SYSTEM SPECIFICATIONS............................................................. 13
CHAPTER 7: SYSTEM SCHEMATIC...................................................................... 15
CHAPTER 8: REPLACEMENT PARTS LIST......................................................... 16
THE ARRANTY ........................................................................................................ 19
EQUIPMENT RETURN POLICY............................................................................... 19
EQUIPMENT DECONTAMINATION....................................................................... 19

4
NOTE
DOCUMENTATION CONVENTIONS
T is uses t e following conventions to present information:
An exclamation point icon indicates a
WARNING
of a situation or condition t at could lead to
personal injury or deat . You s ould not proceed
until you read and t oroug ly understand t e
WARNING message.
WARNING
CAUTION
A raised and icon indicates
CAUTION
information
t at relates to a situation or condition t at could lead
to equipment malfunction or damage. You s ould not
proceed until you read and t oroug ly understand t e
CAUTION message.
A note icon indicates
NOTE
information. Notes
provide additional or supplementary information
about an activity or concept.

5
C apter 1: System Description
Function and T eory
T e Keck Interface Probe is a portable instrument capable of accurately
measuring water and ydrocarbon levels and ydrocarbon layer t ickness
in monitoring wells. T e probe consists of a stainless steel and Teflon®
probe attac ed to a reel-mounted, Tefzel* coated engineer's tape. T e
engineer's tape comes in standard or metric graduations and is accurate
to 1/100 of a foot. T e probe as a float w ic detects ydrocarbon
levels and a pair of stainless steel contacts for sensing conductive fluids.
T e probe as an audible buzzer signal and a visible lig t w ic are
activated w en t e instrument reac es water or product. T e probe
features an auto s utoff circuit to prevent battery disc arge. T is auto
s utoff circuit allows t e instrument 10 minutes of continuous operation
before t e unit s uts off.
W en t e Keck Interface Probe is lowered down a well and contacts any
fluid wit a specific gravity of .60 or greater, t e float will activate t e
visible and audible signals. If t e fluid is non-conductive, t e lig t will be
red and a solid tone will sound. If t e fluid is water or ot er conductive
fluid, t e conductive contacts will cause t e lig t to turn green and t e
tone will oscillate. If t e probe is lowered t roug t e water layer to a
non-conductive layer (suc as DNAPL) t e tone will c ange and t e lig t
will return to red.
To avoid damage to tape and strain relief, do not over
tig ten reel wit probe in storage position.

6
System Components
Figure 1 – System Components
Probe
Assembly
Reel
Assembly
Frame
Assembly
Tape
Assembly
Tape Guard
Faceplate/
Electronics
Assembly
Hanger

7
C apter 2: System Installation
T e Keck Interface Probe Frame as a metal loop, t e “ anger”, w ic
may be used to ang t e probe assembly on t e well casing. If t e
Interface Probe frame will not ang on well ead, use t e tape guard to
prevent damage to t e tape.
Figure 2 – Reel Frame

8
C apter 3: System Operation
Step 1: Test t e battery. Press t e "ON/TEST" button. If t e
buzzer makes a loud signal and t e lig t is visible, t e battery is adequate
for normal operation. Pressing t e "ON/TEST" button provides 10
minutes of operation.
Step 2: Test t e instrument operation. Remove t e probe from
t e retaining clip and raise t e p enolic float. W en t e float switc
triggers, t e visible signal will be red and t e audible signal will emit a
steady tone. Wit t e float still raised, moisten your fingers and touc t e
float s aft and t e conductive contact. If t e battery is properly c arged,
t e visible signal will turn green and t e tone will oscillate. Successful
completion of t ese tests will indicate t at t e unit is operating properly.
Measuring Fluid Levels
Step 1: Lower t e Interface Probe down t e well until t e signals
activate and t en read t e measurement at t e top of t e well casing or
ot er reference point. Record t is figure as t e first fluid level.
Step 2: Continue to lower t e probe until t e signals c ange.
Record t e measurement at t e reference point as t e second fluid level.
Step 3: To determine t e product layer t ickness, subtract t e
first reading from t e second reading.
Measuring Water Levels in Product-Free Wells
If t e probe immediately emits a green lig t, nonconductive fluids are
absent from t e surface of t e water.
To avoid damage to tape and strain relief, do not over
tig ten reel wit probe in storage position.

9
KECK KIR DNAPL CORRECTION FACTORS
2nd Reading ____’ + .08’ = ____’
(total dept )
MINUS —
1st Reading ____’ - .08’ = ____’
(to product layer)
CORRECTED PRODUCT THICKNESS = ____’
Example: You find t at a sinker (DNAPL) begins at 22.36 (1st
reading) and t e total dept of your well is 23.61 (2nd reading). Use t e
above formula to get your correct product t ickness.
2nd Reading 23.61’ + .08’ = 23.69’
(total dept )
MINUS —
1st Reading 22.36’ - .08’ = 22.28’
(to product layer)
CORRECTED PRODUCT THICKNESS = 1.41’
Product t ickness can be determined by adding .15’ to t e
difference of your original measurements.

10
C apter 4: System Maintenance
Battery Replacement
Replace t e battery w en t e audible and visible signals become weak or
t e unit does not operate.
Step 1: Gently remove t e battery tray.
Step 2: Remove t e old battery and replace it wit a new one.
Cleaning
T e probe can be cleaned wit any detergent suc as trisodium
p osp ate (TSP), Alconox or Liquinox. If ot er detergents are used, take
care to select detergents t at are compatible wit Teflon®, polypropylene,
and stainless steel. T e reel s ould not be submerged in any liquid, but
may be cleaned wit a damp clot .
If t e float becomes covered wit silt or mud, remove t e float retaining
clip, slide t e float off t e s aft, and clean bot t e float and t e float
s aft. Replace t e float so t e arrow is facing t e top of t e probe and
replace t e retaining clip.
T e conductive contact can be cleaned wit detergent and a small brus .
Calibration
Be aware of t e polarity (+, -) of t e battery w en placing
t e new battery in t e tray.
THE FLOAT SHAFT AT THE BOTTOM OF THE
PROBE IS NOT DESIGNED TO BE REMOVED.

11
Field calibration of t e probe is not normally required.
C apter 5: System Troubles ooting
Problem: No signal (audible or visible) from battery test.
Solutions:
1) T e battery is disc arged.
• C eck or c ange battery.
2) T e circuit is malfunctioning.
• Consult t e manufacturer
Problem: No signal (audible or visible) from t e probe.
Solutions:
1) T e battery is disc arged.
• C eck or c ange battery.
2) T ere is an open connection in t e tape.
• Replace tape and top cap. **
3) T e float switc is malfunctioning.
• Replace t e probe. **
Problem: No indication of product.
Solutions:
1) T ere is a s ort in t e probe.
• Replace t e probe. **
2) Water is bridging at t e bottom of t e probe.
• Clean t e probe. Do not unscrew t e float switc .

12
Troubles ooting continued...
Problem: No indication of water.
1) T e conductive contact is dirty.
• Clean t e contact.
2) T ere is an open connection in t e tape.
• Replace tape and top cap. **
3) T e circuit is malfunctioning.
• Consult t e manufacturer.
Problem: T e signal (audible or visible) is intermittent.
1) T ere is an open connection in t e tape.
• Replace tape and top cap. **
2) T ere is a loose connection in t e circuit or t e probe.
• Repair t e connection. **
3) T e float is damaged or missing.
• Replace t e float.
**For Tec nical Assistance, Call Geotec 1-800-275-5325

1
C apter 6: System Specifications
Probe
Material: Stainless Steel & Teflon®
Weig t: 19.75 oz. 560 g
Diameter: 1.5 Inc es 3.8 cm
Lengt : 8.9 Inc es 22.6 cm
Conductivity T res old
(detects water at) : >6.7 µS
Minimum detectable ydrocarbon: .01 foot
Tape
Material: Tefzel coated stainless steel
Lengt /Weig t: 100 foot / 30 meters = 9 lbs
200 foot / 60 meters = 11 lbs
300 foot / 100 meters = 14 lbs
Accuracy: 100t of a foot/100’
Per Federal Specification
GGG-T-106E
Reel/Frame
Material: Polypropylene & Aluminum
Size: 13” H x 11” W x 7” D
Unit
Battery: 9 volt alkaline
Self s ut – off time: 10 minutes
Output tone: 500 Hz
Modulation (water detected): 3.5 Hz

14
Operating temperature range: 32 – 140 °F 0 – 60 °C
Storage temperature range: -40 – 158 °F -40 – 70 °C
Response time: <10 milliseconds

15
C apter 7: System Sc ematic
Figure 3 – Front and Side View

16
C apter 8: Replacement Parts List
Figure 5 – Frame, Reel, & Control Assembly Parts List
ITEM # PARTS DESCRIPTION PARTS LIST
1 FRAME ASSEMBLY 52050027
2 REEL ASEMBLY, 100ft/ 0m 52050029
REEL ASEMBLY, 200ft/60m 520500 0
REEL ASEMBLY, 00ft/100m 520500 1
CONTROL ASSEMBLY 520500 6
4 CLAMPING KNOB 12050524
5 RETAINING CLIP 12050001
6 BREAK SCREW 12050525
7 CLAMPING NUT 17500129
MANUAL 12050096
TAPE GUARD 12050060
CARRYING CASE (OPTIONAL) 12050059

17

18
Figure 6 – Tape/Probe Parts List
Notes

19
T e Warranty
For a period of one (1) year from date of first sale, product is warranted to be free
from defects in materials and workmans ip. Geotec agrees to repair or replace,
at Geotec ’s option, t e portion proving defective, or at our option to refund t e
purc ase price t ereof. Geotec will ave no warranty obligation if t e product is
subjected to abnormal operating conditions, accident, abuse, misuse,
unaut orized modification, alteration, repair, or replacement of wear parts. User
assumes all ot er risk, if any, including t e risk of injury, loss, or damage, direct
or consequential, arising out of t e use, misuse, or inability to use t is product.
User agrees to use, maintain and install product in accordance wit
recommendations and instructions. User is responsible for transportation
c arges connected to t e repair or replacement of product under t is warranty.
Equipment Return Policy
A Return Material Aut orization number (RMA #) is required prior to return of any
equipment to our facilities, please call 800 number for appropriate location. An
RMA # will be issued upon receipt of your request to return equipment, w ic
s ould include reasons for t e return. Your return s ipment to us must ave t is
RMA # clearly marked on t e outside of t e package. Proof of date of purc ase
is required for processing of all warranty requests.
T is policy applies to bot equipment sales and repair orders.
FOR A RETURN MATERIAL AUTHORIZATION, PLEASE CALL OUR
SERVICE DEPARTMENT AT 1-800-833-7958 OR 1-800-275-5325.
Model Number: ________________
Serial Number: ________________
Date: ________________
Equipment Decontamination
Prior to return, all equipment must be t oroug ly cleaned and
decontaminated. Please make note on RMA form, t e use of equipment,
contaminants equipment was exposed to, and decontamination
solutions/met ods used.
Geotec reserves t e rig t to refuse any equipment not properly
decontaminated. Geotec may also c oose to decontaminate equipment
for a fee, w ic will be applied to t e repair order invoice.

NOTES