TE Connectivity TruBlue 255 LEVEL User manual

TE CONNECTIVITY SENSORS /// TRUBLUE USER’S MANUAL 08/2016
Page 1
TruBlue User’s Manual
FOR WATER LEVEL, CONDUCTIVITY, TEMPERATURE AND BAROMETRIC PRESSURE
DATA LOGGERS
255 LEVEL
275 BARO
285 CT
555 LEVEL
585 CTD

TRUBLUE USER’S MANUAL
Water Level, Conductivity, and Barometric Pressure Data Loggers
TE CONNECTIVITY SENSORS /// TRUBLUE USER’S MANUAL 08/2016
Page 2
Contents
1
Introduction
3
2
Notice
3
3
History
3
4
TruBlue Series Overview
4
5
Using the TruWare Software
5
6
Connections and Field Installation
7
Types of Interface Cables
7
Connecting to the Field Cable
8
Connecting to a Computer or Device
9
Communication Cable Options
10
7
Sealed Construction
11
8
Internal Clock Synchronization
11
9
General Field Installation
11
10
Cable Protection
11
11
Conductivity
12
Types of Conductivity Measurement
12
Actual Conductivity
12
Specific Conductivity
12
Calibrating the Conductivity Sensor
12
12
Maintenance
14
13
Troubleshooting
15
14
Warranty and Product Return Procedures
17
15
Appendix A: TruBlue Connection Diagrams
18
850-00857 USB to Backshell Comm Cable
18
850-00855 Technicians Comm Cable
19
850-00856 USB to Hirose Comm Cable
20
850-00858 Hirose to Flying Leads Comm Cable
21
852-XXXXX Stainless Steel Suspension Wire
22
851-XXXXX Direct Read Interface Cable
23
853-XXXXX Interface Cable
24
860-00825 Anti-Fouling Screen
25
860-00100 RS-485 to SDI-12 Convertor
26

TRUBLUE USER’S MANUAL
Water Level, Conductivity, and Barometric Pressure Data Loggers
TE CONNECTIVITY SENSORS /// TRUBLUE USER’S MANUAL 08/2016
Page 3
1. Introduction
THANK YOU FOR YOUR PURCHASE
The TruBlue line of data loggers offers accuracy, versatility and extensive features. You’ve made a commitment to
quality. In return, we promise a high level of service and support to help you get the most from your investment in leading-edge
environmental monitoring instrumentation.
ABOUT TRUBLUE DATA LOGGERS
With models available to measure Liquid Level; Temperature; Conductivity; and Barometric Pressure the TruBlue
data logger family is our next generation of Environmental Resource sensors –the TruBlue data logger family combines
precision, performance, and rugged reliability like no other water level measurement instrument available today. Designed to
deliver time and time again in even the harshest conditions, TruBlue data loggers are battery powered and features welded
316 stainless steel or titanium construction in a fully sealed design. Since these units do not require onsite power or a
programmable logic controller (PLC), a terminal box isn’t necessary.
WEBSITE AND EMAIL
You can visit our website at www.te.com/usa-en/products/sensors.html for information on our latest product releases,
application notes, product specifications and certifications, and IS control installation drawings. We welcome your questions
and comments and strive to reply promptly. Please e-mail us at W[email protected]
TECHNICAL SUPPORT
While this manual provides extensive guidance for everything from setup through maintenance, we understand that
there’s nothing like getting an expert on the phone to provide quick answers and help address challenges for your particular
application. If you have questions concerning any of our products, call [phone] or 1-800-745-8008, extension 4398;
Monday through Friday between 8:00 a.m. and 5:00 p.m. Eastern Standard Time.
ORDERING PRODUCTS AND ACCESSORIES
For your convenience, orders may be placed on-line by visiting our e-commerce website,
www.LevelandPressure.com. You can also contact our Customer Service department at 1-800-745-8008 or contact your local
representative. Expedited shipping is available.
2. Notice
This user’s manual was prepared for the current firmware and software releases at the time of the manual
publication. While this document is believed to be thoroughly reliable, Measurement Specialties, A TE Connectivity Company
assumes no liability for inaccuracies. Addenda will be distributed as deemed necessary. All computer programs supplied with
your products are written and tested on available systems at the factory. Measurement Specialties, A TE Connectivity
Company assumes no liability for other computers, languages, or operating systems. We reserve the right to change the
specifications without notice. Any questions regarding firmware upgrades may be addressed to Applications Engineering.
Application software and transducer firmware revisions as well as manual addenda may be obtained from our website
www.te.com/usa-en/products/sensors.html
3. History
Version
Date
Treatment
Author
Version 1.0
August - 2016
Update to TE
SH
Version 1.1
Version 1.2

TRUBLUE USER’S MANUAL
Water Level, Conductivity, and Barometric Pressure Data Loggers
TE CONNECTIVITY SENSORS /// TRUBLUE USER’S MANUAL 08/2016
Page 4
4. TruBlue Series Overview
TruBlue represents the leading edge of pressure sensing technology. Built with power conserving
microcomputer circuitry and offering the highest level of functionality and accuracy available, the TruBlue
series is comprised of the following data logger models:
MODEL MEASURES & LOGS SUBMERSIBLE? PRESSURE REFERENCE
255 LEVEL Level & temperature Yes Absolute
275 BARO Barometric Pressure & Temperature No Absolute
285 CT Conductivity & Temperature Yes N/A
288 CT Conductivity & Temperature Yes N/A
555 LEVEL Level & Temperature Yes Vented, Absolute
565 LEVEL Level & Temperature- High Accuracy Yes Vented or Absolute
585 CTD Conductivity, Level & Temp Yes Vented or Absolute
KEY FEATURES:
• User-friendly TruWare software included, free of charge
•Fully sealed design
•5-year permanent battery (at a 15-minute logging rate); 10 year for TruBlue 255 model
•8MB internal memory with 56 MB available internal memory for the TruBlue 255 model
•Rugged 316 stainless steel or titanium with polyurethane standard or ETFE cable for
harsh environments
• 2-year warranty against manufacturer defects
•Vented or absolute reference
•Calibration report included with each instrument when shipped
•Easy set-up and data retrieval
•Integrated temperature measurement up to ±0.1ºC accuracy
•Field upgradeable firmware
•Quick-disconnect cable assembly
•RS-485 output with SDI-12 protocol
•Optional SDI-12 for connectivity to 3rd party SDI-12 devices
• Optional auxiliary battery pack for rapid sampling measurement

TRUBLUE USER’S MANUAL
Water Level, Conductivity, and Barometric Pressure Data Loggers
TE CONNECTIVITY SENSORS /// TRUBLUE USER’S MANUAL 08/2016
Page 5
5. Using the TruWare Software
Both powerful and user-friendly, TruWare is the software program designed specifically to manage
TruBlue data loggers and the data they collect. Used together, a TruBlue data logger and TruWare are
ideal for monitoring groundwater and surface water levels in wells, open channels, lakes, streams and
reservoirs as well as general watershed management.
With its highly visual interface and powerful features, TruWare makes it easy to manage your
TruBlue data logger.

TRUBLUE USER’S MANUAL
Water Level, Conductivity, and Barometric Pressure Data Loggers
TE CONNECTIVITY SENSORS /// TRUBLUE USER’S MANUAL 08/2016
Page 6
5. Using the TruWare Software –Continued
WITH TRUWARE YOU CAN:
• Make a direct connection between a PC or laptop and one or more data loggers
•Program tests (customized data collection schedules) for connected data loggers
•Extract data from a previously initiated test
• View, save and export test data and real-time readings
• View data as a table or dynamic, self-updating graph displaying the parameters of your choice
• Check for and download firmware updates for hardware
• Calibrate the conductivity sensor (if available) for monitoring the electrical conductance (below).
For detailed instructions on using TruWare, please see the TruWare User’s
Manual that comes with the software and is also available at our website.

TRUBLUE USER’S MANUAL
Water Level, Conductivity, and Barometric Pressure Data Loggers
TE CONNECTIVITY SENSORS /// TRUBLUE USER’S MANUAL 08/2016
Page 7
6. Connections and Field Installation
There are several types of cable that may be used in deploying your TruBlue data logger—Which you
choose will depend on the data logger’s pressure format (vented or absolute) and communications needs.
THE 853 INTERFACE CABLE ASSEMBLY
PART NUMBER (853-XXXXX)
Includes power and communications conductors as well
as a reference pressure vent tube. Cables are available
in configurable lengths from 5-999 feet. It should be
used with all vented TruBlue data loggers.
THE 852 STAINLESS STEEL SUSPENSION
WIRE PART NUMBER (852-XXXXX)
Is a low-cost suspension solution intended for use only
with absolute transducers. Wire is available in
configurable lengths from 0-999 feet. Since there is no
vent tube or desiccant filter, maintenance is minimal. On
the other hand, the fact that there are no
communications conductors in the cable means that, in
order to communicate with the level data logger, it will
need to be removed from its measurement location.
THE 851 DIRECT READ INTERFACE
CABLE PART NUMBER (851-XXXXX)
Is a low-cost solution intended for use only with
absolute or CT data loggers. It Includes power and
communications conductors to provide the ability to
communicate with the data logger without extracting it
from its measurement location. Since there is no vent
tube or desiccant filter, maintenance is minimal.

TRUBLUE USER’S MANUAL
Water Level, Conductivity, and Barometric Pressure Data Loggers
TE CONNECTIVITY SENSORS /// TRUBLUE USER’S MANUAL 08/2016
Page 8
6. Connections and Field Installation - Continued
CONNECTING THE DATA LOGGER TO THE FIELD CABLE
• Inspect the two O-rings (C) on the open (connecting) end of the data logger. Make sure they are clean
and not damaged. (Figure 6.2)
• Look inside the open (connecting) ends of the data logger and the cable to see how the two mate
together. Note the two “keys” in the data logger and cable assemblies and the fact that they are different
sizes to ensure proper alignment. (Figure 6.1)
• Gently insert the data logger housing into the cable backshell (knurled assembly). Hold the data logger
in one hand and the cable in the other near the backshell. While applying slight pressure to push the two
parts together, slowly rotate the data logger assembly in the backshell until the keys align. When that
happens the housing will slip into the backshell assembly an additional inch and you will no longer be
able to rotate the level data logger while holding the cable.
• Now that the keys are aligned and seated, grasp the data logger in one hand and the knurled backshell
in the other. While applying slight pressure to push the two parts together, screw the backshell onto the
data logger housing. Continue threading the parts together until they are fully mated, leaving no visible
gap where the backshell meets the data logger housing.
FIGURE 6.1: CABLE MATING KEY
Figure 4.1:
(A) Data logger /cable
mating key
(B) the open
(connecting) end of
the cable assembly is
also sometimes
called the “backshell”
(C) Data Logger O-Rings
FIGURE 6.2: DATA LOGGER + CABLE ASSEMBLY

TRUBLUE USER’S MANUAL
Water Level, Conductivity, and Barometric Pressure Data Loggers
TE CONNECTIVITY SENSORS /// TRUBLUE USER’S MANUAL 08/2016
Page 9
6. Connecting to a Computer or Other Device
WITH A SUSPENSION CABLE -
852 Stainless Steel Suspension Cable
WITH AN INTERFACE CABLE ASSEMBLY -
851 Direct Read Interface Cable
Designed for our non-vented data logger models the opposite end of the 851 Direct Read Interface Cable
assembly provides simple yet elegant TruBlue connection to the above-ground environment. Assembled
with a compact overmolded Hirose electrical connection the 851 Direct Read Interface Cable connects to
the device via a communications cable. For this there are several options (See Page 10):
853 Interface Cable
The opposite end of the 853 Interface Cable assembly provides simple yet elegant TruBlue connection to
the above-ground environment. The assembly incorporates an innovative vent filter that provides lifetime
moisture protection for vented gage water level data loggers. A GORE-TEX plug prevents water droplets
from entering the filter while allowing air to pass freely to the internal silica gel desiccant. The filter,
housed in corrosion-resistant grade 316 stainless steel, provides surge protection, and features a
compact Hirose electrical connector. The 853 Interface Cable connects to the device via a
communications cable. For this there are several options (See Page 10):
NOTE: When deploying a data logger with an Interface Cable Assembly, it is
very important to make sure the electrical connector is covered with the
supplied cap.
Absolute dataloggers typically use the 852 Suspension
Wire when deployed (unless the ability to communicate
without extraction is desired, in which case an interface
cable can be used. Connecting an absolute data logger to
a computer requires an 850-00857 USB to Backshell
communications cable. This cable has a design that
allows easy connection once you remove the logger’s
backshell.
HIROSE CONNECTOR WITH CAP
GORE-TEX FILTER
850-00857 USB to Backshell Communication Cable

TRUBLUE USER’S MANUAL
Water Level, Conductivity, and Barometric Pressure Data Loggers
TE CONNECTIVITY SENSORS /// TRUBLUE USER’S MANUAL 08/2016
Page 10
6. Connecting to a Computer or Other Device - Continued
COMMUNICATION CABLE OPTIONS –
THE 850-00855 TECHNICIANS
COMMUNICATION CABLE
An all-in-one adapter enabling connection to a
computer, modem or PDA. It features built-in
conversion to RS-232 and USB as well as a DC
input connector. (See Figure A-1 in Appendix.)
THE 850-00856 USB TO HIROSE
COMMUNICATION CABLE
The 850-00856 cable is the best choice for quick
data logger connections in the field. It features
the Hirose connector to quickly link to the vent
filter connector, and unique USB/RS-232
conversion connector at the opposite end. This
same cable also provides external power to the
data logger allowing faster sampling rates during
configuration
THE 850-00858 HIROSE TO FLYING
LEADS COMMUNICATION CABLE
The best choice to connect an interface cable to
terminals requiring flying leads, such as, an
external data logger.
THE 850-00857 USB TO BACKSHELL
COMMUNICATION CABLE
The 850-00857 cable is the best choice for
programming or extracting data from the data
logger, when not deployed in the field.
THE 860-00100 RS-485 TO SDI-12
CONVERTOR
Converts Serial RS-485 to SDI-12 protocol and
is used to communicate with a third party SDI-12
device such as an external data logger

TRUBLUE USER’S MANUAL
Water Level, Conductivity, and Barometric Pressure Data Loggers
TE CONNECTIVITY SENSORS /// TRUBLUE USER’S MANUAL 08/2016
Page 11
7. Sealed Construction
Because of the TruBlue data logger’s sealed design (which improves durability by eliminating moisture
intrusion), the unit’s batteries cannot be removed, replaced or recharged. The two 3-volt lithium ion
batteries that are built into the unit will last more than 5 years when logging 1 reading every 15 minutes.
For applications where data must be recorded at a higher frequency we offer additional Auxiliary Battery
Packs and Backshells as accessories. The Auxiliary Battery Pack provides an additional 7.2V Lithium
battery that is field installable and replaceable. To accommodate the additional battery pack, Auxiliary
battery pack backshells are offered in both 316 Stainless Steel and Titanium.
8. Internal Clock Synchronization
When received from the factory, your TruBlue data logger’s internal calendar/clock will be set to Eastern
Standard Time. The internal clock can be quickly and easily synchronized to your local clock and time
zone using TruWare. Please refer to the TruWare User’s Manual for details.
9. General Field Installation
The TruBlue is calibrated for operation in a vertical, upright position with the cable extending up. Although
it may be operated in any orientation, anything other than this vertical position will result in a slight zero
offset in the measured data. If the data logger will be operated in a known, non-vertical orientation this
zero offset error may be easily calibrated out.
10. Cable Protection
•Cable damage is one of the most common causes of vented data logger failure. Here are a few
precautions you should take in order to extend the life of your TruBlue data logger:
• When working with your data logger cable, make sure the cable does not drag over sharp edges. This
could nick or cut the cable outer jacket. A cut in the outer jacket could allow water into the data logger
electronics causing permanent damage.
• Our polyurethane jacketed cables are quite flexible; however, care needs to be taken to avoid crimping
the vent tube inside the cable when bending the cable to suit your installation. To avoid this, do not bend
your cable tighter than a radius of 3 inches.
• If you use a compression fitting or strain relief to secure the cable as it enters a junction box, be careful
not to over-tighten the fitting to the extent that it damages the cable or crushes the internal vent tube.
WARNING. Crimping the vent tube with tight bends or crushing it within the cable can block the
reference pressure port of the water level data logger. This will prevent the reference from
registering atmospheric or temperature-related pressure changes, resulting in measurement
offset errors

TRUBLUE USER’S MANUAL
Water Level, Conductivity, and Barometric Pressure Data Loggers
TE CONNECTIVITY SENSORS /// TRUBLUE USER’S MANUAL 08/2016
Page 12
11. Conductivity
WHAT IS CONDUCTIVITY
Conductivity, or conductance, is the degree to which a material conducts electric current. In water, high
conductivity often indicates the presence of a high concentration of dissolved salts and minerals.
Conductivity measurements can be valuable for detecting and monitoring saltwater intrusion, surface
water infiltration and mixing, and certain pollutants and contaminants.
TYPES OF CONDUCTIVITY MEASURMENTS
The TruBlue 585 CTD water level data logger can calculate and record the following parameters:
ACTUAL CONDUCTIVITY
UNITS: - microsiemens per centimeter (μS/cm), default
- millisiemens per centimeter (mS/cm)
SPECIFIC CONDUCTIVITY
UNITS: - microsiemens per centimeter (μS/cm), default
- millisiemens per centimeter (mS/cm)
A means of expressing what the actual conductivity of a solution would be at a standard reference
temperature (25°C). Calculated from actual conductivity and temperature. The factory default coefficients
calculate specific conductivity per Standard Methods 2510B.
CALIBRATING THE CONDUCTIVITY SENSOR
STEP 1. GATHER SUPPLIES. YOU WILL NEED
• Calibration solution set close to your expected conductivity level
• A clean beaker for calibration solution
STEP 2. RINSE THE SENSOR
A. Dry the body of the unit if is wet, and invert to remove any liquid inside the conductivity sensor
B. Before opening the solution bottle, invert it a few times, then pour into beaker/cup
C. Insert the TruBlue logger into the solution in the test beaker, making sure the conductivity “slot” is completely
submerged, and gently stir the solution with the datalogger.
D. Remove the TruBlue logger and discard the solution
E. Ideally, repeat steps A-D
… (Cont’d.)

TRUBLUE USER’S MANUAL
Water Level, Conductivity, and Barometric Pressure Data Loggers
TE CONNECTIVITY SENSORS /// TRUBLUE USER’S MANUAL 08/2016
Page 13
11. Conductivity - Continued
STEP 3. EQUALIZE THE TEMPERATURE
A. Fill the beaker with enough calibration solution
B. Insert the TruBlue into the solution and gently stir the solution with the datalogger to insure there are no
bubbles formed on the conductivity sensor. Allow at least 30 seconds for sensor and solution temperatures to
equalize
STEP 4. CALIBRATE WITH TRUWARE
The CTD datalogger should be connected to your computer with TruWare open and a Meter View window
displaying a conductivity reading:
A. With the TruBlue inserted in the calibration solution, hold the mouse pointer over the conductivity reading and
“right click” to get to the “Conductivity Calibration” window.
B. Enter the conductivity level of the calibration solution in the first row and column of the calibration window
under “User Input” labeled “Point 1.” Example: 47,600 uS.
C. Click on “Read Conductance for Point 1”
D. After about 28 seconds the remaining values will populate in the remaining columns. The Cell Constants
should be ~0.5000.
E. Select Save. Remove the CTD datalogger from the solution. Close the “Conductivity Calibration” window.
F. Take a reading in solution; it should be near or around 47,600 uS. It may take a few readings to collect before
reaching your target level.

TRUBLUE USER’S MANUAL
Water Level, Conductivity, and Barometric Pressure Data Loggers
TE CONNECTIVITY SENSORS /// TRUBLUE USER’S MANUAL 08/2016
Page 14
12. Maintenance of Your CTD (Conductivity, Temperature, Depth) Device
GENERAL MAINTENANCE PRINCIPLES
Conductivity meters and cells should be calibrated to a standard conductivity solution, this should only be
done when the device is clean. Selecting standards is very important; you should always choose one that has the
approximate conductivity of the solution environment to be measured (stream, ocean, etc.). Sometimes users like
to have a second calibration point either above or below the main calibration point, which is useful for measuring
applications that have greater conductivity spans. Conductivity sensors, like any other sensor installed in a
process, will eventually succumb to contamination from the process. Regular cleaning of the conductivity sensor
will assure long, reliable and accurate service. Careful examination of the electrodes should be performed to
make sure they have not been chemically attacked, eroded or physically altered. A slow degradation of the sensor
is hard to spot until it’s too late. Cleaning should be done with a combination of soaks and rinses in a solution of
water and detergent. This usually removes most contaminants. Persistent contaminants may require a brief
soaking in weak acid or diluted caustic solutions. Acetone easily cleans most organic matter, and hypochlorous
solutions will remove algae, bacteria, or molds. Follow by thoroughly rinsing with clean water to remove and
neutralize any residual acid or caustic solutions.
CAUTION: Always follow all safety procedures when using chemicals to clean conductivity sensors.
Clogged nose piece or a dirty transducer diaphragm could result in erroneous readings from your
transducer.
CLEANING YOUR DATA LOGGER
The water level data logger can be cleaned by gently swishing it back and forth in a bucket of warm,
soapy water until the residue softens and washes off. Either a clogged nose piece or a dirty diaphragm could
result in erroneous readings from your unit.
WARNING. Never attempt to clean the unit’s nose piece or diaphragm with a sharp or hard object. This
could dent the sensor diaphragm and cause permanent damage to the data logger.

TRUBLUE USER’S MANUAL
Water Level, Conductivity, and Barometric Pressure Data Loggers
TE CONNECTIVITY SENSORS /// TRUBLUE USER’S MANUAL 08/2016
Page 15
13. Troubleshooting
1. TRANSDUCER HAS FAILED AND HAS BEEN REMOVED FOR ANALYSIS
Inspect the transducer housing. It should be intact and free of corrosion. If the outer surface of the transducer
is pitted, this could be an indication of galvanic corrosion caused by stray ground currents. If this is the case, the
data logger will probably need to be replaced. It could be that residue has accumulated on the diaphragm,
preventing it from responding properly to pressure changes. The data logger can be cleaned by gently swishing
the transducer back and forth in a bucket of warm, soapy water until the residue softens and washes off. Under
no circumstances should any object or tool be used to remove residue from the sensing diaphragm, which could
cause permanent damage. If cleaning the diaphragm does not solve the problem, the transducer should be
returned to the factory for repair or replacement.
2. TRANSDUCER SUDDENLY FAILS DURING OR JUST AFTER A NEARBY
LIGHTNING EVENT.
This failure is usually caused by overvoltage due to ground transients resulting from a direct or indirect
lightning event. These transients can travel distances of a mile or more.
3. TRANSDUCER RESPONSE TO PRESSURE/LEVEL INPUT CHANGES BECOMES
SLUGGISH.
This is usually a sign that the sensing end of the transducer has become fouled with residue. The transducer
must be removed from service and the sensing diaphragm cleaned as described in Chapter 12.
4. TRANSDUCER OUTPUT READING IS WITHIN LIMITS BUT “FREEZES” AT ONE
POINT. RESPONSE TO PRESSURE/LEVEL INPUT CHANGES BECOMES
SLUGGISH.
In certain environments, “crust” may form over the sensing diaphragm, preventing the sensor from identifying
change in level. Removing the transducer from service and cleaning it (as described in Chapter 12) will generally
solve the problem. Additionally fouling may occur due to marine growth. To combat marine growth we offer an
Anti-Fouling Screen Accessory that is field installable. Marine growth occurs on the copper and eventually erodes
the copper and drops off or the copper is manually removed during routine maintenance. Level transducers
temporarily removed from the well or sump should not be stored dry, but should be stored in a bucket of fresh
water in order to prevent “crust” formation.
5. TRANSDUCER READINGS INCREASE VERY SLOWLY OVER TIME.
Our cable is shipped coiled and consequently takes time to straighten when installed. To prevent cable
stretch with lengths greater than 200 feet (60 m), secure the Kevlar fibers (just under the cable jacket) to your
junction box or other secure object.

TRUBLUE USER’S MANUAL
Water Level, Conductivity, and Barometric Pressure Data Loggers
TE CONNECTIVITY SENSORS /// TRUBLUE USER’S MANUAL 08/2016
Page 16
13. Troubleshooting –Continued
6. NO ELECTRICAL OUTPUT FROM YOUR TRANSDUCER.
Check all electrical connections to make sure they are correct and secure. If the problem persists, it could be
a circuit board or the sensor in your transducer. The unit must be returned to the factory for evaluation. The most
probable causes for this type of failure are lightning damage or damage to the submersible cable jacket, allowing
water to leak down the cable and into the transducer housing.
7. FORMATION OF MARINE GROWTH ON A SUBMERSIBLE TRANSDUCER
Certain transducer construction materials (for example, 316 stainless steel) attract marine life (snails) and
algae. Clean the transducer diaphragm by soaking it in a bucket of warm water with a non-aggressive cleaning
solution. Growth can be reduced by utilizing the 860-00825 Anti Fouling Guard to protect the sensor. You can
also coat the transducer with marine grease. This may be the most effective and inexpensive way to protect your
transducer.
8. SUBMERSIBLE TRANSDUCER EXHIBITS CORROSION OR PITTING ON BODY OR
DIAPHRAGM
Dissimilar metals (for example, your transducer housing and your pump housing) in an electrolytic
environment (fluid in your well) can lead to galvanic corrosion of the metal that is nearer the anodic end of the
galvanic series. Likewise, a voltage potential between the ground wire of the transducer and the ground of other
equipment in the well can lead to galvanic corrosion.
9. TRANSDUCER HAS AN OFFSET ERROR.
Our submersible transducers perform best when pointing downward. Keep in mind that you can experience
offset error due to the position sensitivity or orientation change of the sensor. Offset errors are more prominent in
low-pressure applications with the sensing end of the transducer lying flat or pointing upward. Offset adjustments
can be made thru TruWare software.

TRUBLUE USER’S MANUAL
Water Level, Conductivity, and Barometric Pressure Data Loggers
TE CONNECTIVITY SENSORS /// TRUBLUE USER’S MANUAL 08/2016
Page 17
14. Warranty and Product Return Procedures
WARRANTY
Any unit that is less than 2 years old (see DOM) which does not meet the product’s specifications and
exhibits no physical damage to the housing, sensor, or cable (cuts), will be replaced under warranty. Units 2-3
years old: Units that fall within this age group and exhibit no obvious physical damage to the housing, sensor, or
cable (cuts), can be replaced at a discounted list price. Units greater than 3 years old: Units that fall within this
age group are not replaced under warranty.
MERCHANDISE RETURN PROCEDURES
Contact the Applications Engineer (757-766-4398) if your data logger is not operating properly. The
engineer will work with you to troubleshoot the problem and, if necessary, forward you to Customer Service for a
Returned Merchandise Authorization (RMA). Please do not ship until you have obtained a Returned Merchandise
Authorization (RMA) and instructions from Customer Service.
The staff is available for trouble shooting at [phone] or toll free at 1-800-745-8008 during normal working
hours, Eastern Standard Time. Be prepared to supply the following information when requesting the RMA:
• Data logger part number
• Serial number
• Complete description of problems/symptoms
• Bill To and Ship To address
The above information, including the RMA number, must be on the customer’s shipping documents that
accompany the equipment to be repaired. Prior to returning, the data logger and cable must be cleaned per
instructions provided on the cleaning certificate supplied when the unit was delivered. The certificate can also be
found on our website www.TE.com/Sensors
The completed certificate must accompany the data logger when shipped. We reserve the right to reject any
shipment deemed to be unsanitary or environmentally unsafe to handle. If these guidelines are not met, the
package could be sent back unopened at the customer’s expense.
All equipment should be sent to the following address:
ATTN: WATER LEVEL REPAIR DEPARTMENT (7-digit RMA number)
Measurement Specialties Inc.,
A TE Connectivity Company
1000 Lucas Way
Hampton, Virginia 23666
Incoming freight charges are the customer’s responsibility. The customer is also responsible for paying shipping
charges to and from Measurement Specialties Inc., a TE Connectivity company for any equipment not under
warranty.

TRUBLUE USER’S MANUAL
Water Level, Conductivity, and Barometric Pressure Data Loggers
TE CONNECTIVITY SENSORS /// TRUBLUE USER’S MANUAL 08/2016
Page 18
15. Appendix A - TruBlue Connection Diagrams
THE 850-00857 USB TO BACKSHELL COMMUNICATION CABLE
The 850-00857 USB to Backshell Communication Cable is universal to vented gage and absolute data
loggers. This NON-SUBMERSIBLE communications cable can be used to set-up tests and to retrieve test data
from all TruBlue data loggers. The cable is intended to be used temporarily and is not intended for permanent
attachment.

TRUBLUE USER’S MANUAL
Water Level, Conductivity, and Barometric Pressure Data Loggers
TE CONNECTIVITY SENSORS /// TRUBLUE USER’S MANUAL 08/2016
Page 19
15. Appendix A - TruBlue Connection Diagrams - Continued
THE 850-00855 TECHNICIAN’S COMMUNICATION CABLE
The 850-00855 Technician’s Communication Cable provides connection from the 853 Interface Cable
Assembly to a modem, PDA, or computer, and includes built-in conversion to RS-232C and USB as well as a DC
input connector. The 3 foot coiled cable can remain connected to an RS-232C modem port and communicate with
a PDA handheld via USB. Connect the Model 860-00100 (Page 26) for RS-485 to SDI-12.
DB9F
Connector
Protocol Switch
4-40 Thumb Screws
Mini USB
Type B
Power Connector
2.5MM CNTR
POS 6-16 VDC
CABLE–4 CONDUCTOR, 28 AWG TC PP INSULATION 0.035
CODED BLK, WHT, RED, GRN, OVERALL TC SPIRAL SHIELD
POLYURETHANE JACKET, MATTE BLACK 0.160± .010
INCHES
36.0 Inches when
fully extended
Connector,
Waterproof
Miniature Hirose
#HR30-6PA-6P (71)

TRUBLUE USER’S MANUAL
Water Level, Conductivity, and Barometric Pressure Data Loggers
TE CONNECTIVITY SENSORS /// TRUBLUE USER’S MANUAL 08/2016
Page 20
Appendix A - TruBlue Connection Diagrams - Continued
THE 850-00856 USB TO HIROSE COMMUNICATION CABLE
The 850-00856 USB to Hirose Communication Cable is the newest and most streamlined cable offering.
This cable provides connection from the Hirose connector of our Interface Cables directly to your PC or device
USB port. This allows data collection without removing the data logger from its deployed position.