Parker DIGI+ User manual

DIGI+
Digi Cell Plus - Digital Oil Test Cell
MA-K32184 Rev.-1.0
© 2021, Parker Hannifin Manufacturing Ltd
www.parker.com

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Contents
Overview ...................................................................................... 4
Introduction ...............................................................................................................4
Smart Setup, Data Storage & Rechargeable Battery ..............................................4
Safety Information.....................................................................................................5
Test by-product (H2)..................................................................................................6
Conformity.................................................................................................................6
Exclusion of Liability .................................................................................................6
Principle of Operation...............................................................................................7
Water (H2O) in Oil Measurement...............................................................................7
Base Number of Oil Measurement ...........................................................................7
Technical Specication.............................................................................................8
Before Starting ............................................................................ 9
Contents ....................................................................................................................9
Manufacturer Information, Consumables & Spares ..............................................10
DIGI+ Instrument Overview & Operation................................................................11
Charging ..................................................................................................................11
Powering On & O ..................................................................................................12
Opening & Closing DIGI+........................................................................................12
Aborting a Test ........................................................................................................12
Sampling..................................................................................................................13
Sampling Interval ....................................................................................................13
Sample Fluid Preparation and Handling ................................................................13
Setup Menu Navigation .............................................................. 14
Setting Date & Time ................................................................................................14
BN Calibration .........................................................................................................14
Oil Types ..................................................................................................................15
BN OIL TYPE List Name, BN Value & Calibration ..................................................16
Cleaning...................................................................................................................17
Testing ....................................................................................... 18
Test Menu Navigation .............................................................................................18
Water (H2O) - Single Test.........................................................................................18
Base Number (BN) - Single Test.............................................................................19
Measure Used Oil....................................................................................................19
Interpreting Results................................................................... 20
Water .......................................................................................................................20
Sources....................................................................................................................20
Eects......................................................................................................................20
Base Number...........................................................................................................21
Target Levels ...........................................................................................................21
Diesel Engine Oils ...................................................................................................21
Gas Engine Oils.......................................................................................................22
Other Applications ..................................................................................................22
SPID (Smart features) – Overview and setup ............................. 23
DIGI+........................................................................................................................23
Creating & Editing an OIL TYPE List via a PC and & Importing to DIGI+ .............24
BN Measurement Visual Indicators........................................................................26
Creating a Sample Point Identication (SPID) List via a PC & Importing to DIGI+....27
SPID Measurement & Storage................................................................................29
Range Detail............................................................................................................29
Exporting a Sample Point Identication (SPID) Results Measurement
List from DIGI+ to PC..............................................................................................29
Examples.................................................................................................................30
Measurement & Download Cycle...........................................................................30
Measuring and Closing a SPID Set ........................................................................31
Saving, Repeating or Deleting Measurements ......................................................31
Closing SPID Set.....................................................................................................31
Clearing DIGI+ Memory ..........................................................................................32
DIGI+ Reset .............................................................................................................32
DIGI+ Utility .............................................................................................................33

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Contents
Maintenance & Servicing............................................................ 34
Shipping Note..........................................................................................................34
Troubleshooting......................................................................... 35
Measurement ..........................................................................................................35
BN-specic Measurement......................................................................................35
Results.....................................................................................................................36
Result Comparison .................................................................................................37
Connectivity, Battery & Power................................................................................37
DIGI_CFG.csv..........................................................................................................37

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Overview
Introduction
Digi Cell Plus (DIGI+) is a Digital Oil Test Cell with USB storage and charging. DIGI+ provides an accurate means of
detecting and measuring the quantity of water (H2O) in oil and / or the residual Base Number (BN) of oil. This battery-
operated, rugged and compact mobile instrument provides easily retrievable data to ensure fast, accurate and consistent
management of lubricating oil samples.
Condition monitoring of the health of lubricants is an established method of predicting issues, prolonging machinery life
and avoiding impending machinery breakdown thus optimising operating costs. Lubricant condition can be identified
before any serious damage occurs so that production can be maintained, machinery life extended and return on capital
investment increased.
DIGI+ is available in three variants:
• DIGI+ Water (H2O) only
• DIGI+ Base Number (BN) only
• DIGI+ Combined - H2O and BN
Smart Setup, Data Storage & Rechargeable Battery
DIGI+ provides a refreshed, but familiar, interface with the addition of smart features to enhance the user experience over
previous versions of the product. DIGI+ can continue to function as an offline instrument for single measurements and is
able to be operated without smart features until the user chooses to do so.
DIGI+ can be configured when connected to most personal computers (PC) – Windows and Mac. Sample points and
test locations are labelled as Sample Point Identification (SPID). This creates structure to measurements and ensures
no data is accidentally missed. Results are saved to DIGI+ and can then be imported into a PC. The SPID approach
creates an easily retrievable sample point and test history. Setup can include real-time feedback and alarms for optimal
monitoring.
Key Features:
• USB-rechargeable battery with indication of tests remaining before charge
• Oil reference list for BN measurement may be configured via PC rather than entered manually via DIGI+ keypad,
saving time and effort

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Safety Information
DIGI+ and reagents should be operated by persons trained in the use and handling of hydrocarbon products, including
new and used lubricants. Persons should also be familiar with basic laboratory or workshop environments and associated
hazard awareness.
Prior to operating, DIGI+ should be inspected for damage. If any damage is found, consult with the supplier of DIGI+
accordingly.
CAUTION
A Caution notice is used to emphasise that particular care is required to avoid the danger of
personal injury or other hazard.
CHECK
Notes call attention to information that is especially significant to understanding and operating
the equipment. There may be a need to check the orientation or tightness of connections,
for example.
SAFETY EQUIPMENT
Some operations require special attention to safety, such as the use of safety glasses and / or
protective gloves.
General
• this information guide should be read in full before operating DIGI+
• appropriate safety measures must be taken when handling both combustible and flammable liquids
• no liquids outside of those defined in the technical specification should be used
Environment
• DIGI+ must only be operated in well-ventilated areas
• DIGI+ has not been approved for use in an explosive atmosphere
Handling
• the USB socket cover must be fitted unless a micro-USB charging cable is plugged in
• DIGI+ must be kept upright when adding reagents and oils
• care must be taken to be a safe distance away from people and objects when shaking DIGI+
Operating
• any spills should be immediately wiped from the surface of DIGI+ and surrounding work area using a soft cloth or tissue
• safety protection may be impaired if DIGI+ is used in a manner, or for a purpose, other than that described in this
information guide
Only oil that contains < 20% water must be tested. DIGI+ warns of
overpressure at 1.3 bar (18.8 psi): DIGI+ should be put down immediately
and care taken when opening.

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Test by-product (H2)
Hydrogen gas (H2)
build-up risk Use in well ventilated areas.
No open flames, smoking or sources of ignition.
Never add water instead of oil samples.
Dispose of waste carefully.
The water in oil test reagents react rapidly with water. In normal operation up to 70 ml H2is generated.
Test waste can continue to react with water and moisture from the atmosphere. Test waste must not be poured into a
closed container or lidded slops bucket where H2can accumulate. Adequate ventilation must be ensured to avoid H2
build-up in a confined space. H2gas is explosive at concentration levels above 4%.
Conformity
This equipment is CE marked (approved for the EEA market) and UKCA marked (UK Conformity Assessed).
See Contact, consumables and spares information sheet for conformity documentation.
Exclusion of Liability
Every endeavour has been made to ensure the accuracy of the content of this information guide however errors cannot be
ruled out. Consequently, no liability is accepted for such errors as may exist or for any damage or loss whatsoever which
may arise as a result of such errors. All details are subject to technical modifications. Technical specifications are subject to
change without notice.

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Principle of Operation
DIGI+ measures the pressure generated by a chemical reaction that takes place inside the closed sample cup. An oil
sample and reagents are put into the sample cup and DIGI+ is closed and shaken to aid the chemical reaction. The
pressure is proportional to the parameter to be measured. A very sensitive high-resolution pressure transducer is used to
convert pressure to an electrical signal which is then processed and displayed to the user.
Water (H2O) in Oil Measurement
Gas is generated from a chemical that reacts with available water in the sample. The water content is calculated from the
gas pressure in the sample cup.
Base Number of Oil Measurement
Gas is generated from a chemical that reacts with available (remaining) BN additive in the sample. Gas pressure in the
sample cup from used oil is compared to new oil as a ratio:
DIGI+ stores the value of pressure generated by new oil which is measured once and saved as a reference. DIGI+ can
save values for multiple new oils in its memory as OIL TYPES. Before used oil is measured, the new OIL TYPE must be
measured and stored as a calibration value.
• DIGI+ holds calibration data for up to 8 different OIL TYPES
• when using smart mode, DIGI+ holds calibration data separately for up to 10 different OIL TYPES

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Technical Specification
*EasySHIP reagent must be >18 °C before use.
**Extremes of temperature will reduce battery life.
Power (from USB)
Micro-USB: 5 V 100 mA minimum
Tests Per Charge
50 tests or 5 hours
Minimum Battery Charge Cycles
500
Maximum Storage Time From Full Battery
6 months (stored between -5 °C to 35 °C)
Operating Temperature *
10 °C to 45 °C
Storage Temperature **
-20 °C to 60 °C
Material Compatibility
Mineral and synthetic fluids compatible with FKM (Viton(tm)) elastomer seals. Lubricant oils, hydraulic oils,
distillate fuels, and Bio-based fuels.
Unit Dimensions
112 mm maximum height x 76 mm diameter
Mass
200 g
Water BN
Measurement Range (v/v) Measurement Range (mg KOH/g)
0.1 % to 20.0 %
0.1 % to 10.0 %
0.02 % to 1.00 %
200 ppm to 10000 ppm
100 ppm to 3000 ppm
1 to 150
Water Range Resolution BN Resolution
0.1 % to 20.0 %
0.1 % to 10.0 %
0.02 % to 1.00 %
200 ppm to 10000 ppm
100 ppm to 3000 ppm
0.1 %
0.1 %
0.1 %
50 ppm
10 ppm
1 BN
Water Accuracy BN Accuracy
100 ppm to 10000 ppm
> 1 %
Typically ± 1000 ppm
Typically ± 1 %
± 5 BN or 10 % (whichever is greater)
Test Time Test Time
180 seconds 120 seconds

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Before Starting
Contents
NOTE: Original packaging must not be disposed of as this is required to return the DIGI+ safely to the supplier for
maintenance and / or servicing.
Accessories: PPE, reagents, syringes
and consumables
DIGI+
Agitator – DIGI+ Water (H2O) and
DIGI+ Combined variants
Micro-USB charging cable
Quick Test Guide
– printed copy
Contact, consumables and spares information
sheet - printed copy
Scan QR code on Contact, consumables and
spares information sheet to access online
versions of support documentation, how-to
videos, an example DIGI_CFG.csv le and
DIGI Utility (Set-up Software).

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Manufacturer Information, Consumables & Spares
For service, please see the ‘Contact, consumables and spares information sheet’.

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DIGI+ Instrument Overview & Operation
Charging
NOTE: If DIGI+ will not allow more than 10 tests, battery should be fully charged. Charge fully at least once every 6 months
DIGI+ body upper
Pressure Sensor
- Wipe gently only with soft cloth
O-ring
Sample cup
Charge fully with
micro-USB cable
before rst use
DIGI+ requires a fully charged
battery prior to initial use to
accurately measure the remaining
life
Ret USB socket cover
Fully charged battery
run time: 50 tests
Time on
charge
Time on
charge
number of
tests available
number of
tests available
Charge fully before storing. Storing DIGI+ for > 6 months and / or at high temperatures may reduce battery
life and cause irreparable damage
Agitator
- H2O testing only
Easy-to-read multicolour
backlit screen
Soft touch keypad
112mm
76mm

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Aborting a Test
Powering On & Off
Opening & Closing DIGI+
Powering On Powering Off
Use Left (L), Middle (M) or
Right (R) button to power on
Backlight turns o after 20
seconds. Press any button to
re-activate
Opening Closing
Hold the sample cup
and turn the upper
counter-clockwise
Hold the sample cup and
turn the upper clockwise
NOTE: DIGI+ should be
closed to hand tight only
(1/8 turn maximum)
To abort test
OR
AUTO-OFF
after
5 minutes
5

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Sampling
Obtaining a representative sample is one of the most important parts of oil analysis. If a sample does not represent
the true condition of the lubricant and component at the time of sampling, the reliability of both the test result, and the
interpretation of it, is affected.
For maximum accuracy, the following is recommended to ensure that the measured sample is representative of the main
body of oil:
Areas where oil flow is restricted, or where contaminants and wear products tend to settle or collect, should be avoided
as sampling points. Lubricants should be sampled while the machinery is running, if it is safe to do so, or within 30
minutes after shut-down. This ensures that wear products and lubricant contaminants are thoroughly mixed with the
lubricant and that the heavier wear particles have not settled out.
Once a proper sampling point and method is chosen for a particular component, oil samples from that component
should always be taken from the same point with the same method. The following sampling points are recommended:
• petcock or other sampling valve installed prior to the oil filter
• oil dipstick tube or other service opening using a vacuum pump
• sump or reservoir drain
Sampling Interval
When beginning a routine oil analysis program, the usual practice is to sample the entire group of units / components to
establish initial baseline data and quickly spot any components with serious problems. Once this process is complete,
then it is possible to set an initial routine sampling interval. This interval is based on the results of the preliminary
sampling, component manufacturer guidelines, customer maintenance procedures and personnel scheduling, plus
experience with similar components and applications. When the program is fully established, the routine sampling
interval may be adjusted. Once determined, routine sampling intervals should remain as constant as possible. On a ship,
many users monitor key machinery once or twice a week, cylinder BN is measured every 3 days when the main engine
is running, and the main engine system oil is measured every 7 days. See Interpreting Results section for frequency
suggestions per application.
Oil Sample Preparation and Handling
The following will help reduce errors in testing the oil with DIGI+:
• containers used to store or collect the sample should be clean and free of contamination before use
• DIGI+ and the sample to be tested should both be at approximately the same temperature at the time of testing.
Significant temperature differences can affect the measurement
• a clean bottle, such as those used for routine oil analysis, should be used to transfer a representative sample into the
DIGI+ sample cup (pipettes are included with DIGI+ for this purpose)
• the main sample bottle should be shaken before taking a pipette sample to make sure the sample is evenly mixed

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Setup Menu Navigation
Setting Date & Time
> Date/Time <
OK q to select YEAR u
q to select MONTH u
q to select DAY OK
q to select HOUR (24H) u
q to select MINUTES OK
Power on
SETUP
BN Calibration
Gas is generated from a chemical that reacts with available (remaining) BN additive in the sample. Gas pressure from
used oil is compared to new oil as a ratio:
Pressure is generated in DIGI+ proportional to the remaining BN additive in the used oil sample and is compared to
pressure from the new oil.
• the calibration can be checked by testing new oil in the BN, in place of used oil
• it is good practice to check and recalibrate BN, if necessary, every six months

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Oil Types
DIGI+ stores the value of pressure generated by new oil as a reference. The pressure for new oil is measured once and
saved. DIGI+ can save values for multiple new oils in its memory as
OIL TYPES .
• DIGI+ holds calibration data for up to 8 different OIL TYPES
• when using smart mode, DIGI+ holds calibration data separately for up to 10 different OIL TYPES
*The OIL TYPE list can be edited by entering the oils list in set-up.
The OIL TYPE is structured in DIGI+ into separate lists as below:
1
2
3
4
5
6
7
8
SUPERLUBE
HS%CYLGARD
LS%CYLGARD
SYS LUBE_Y
ENGINEOILW
ENGINEOILA
EP GEAR
ULTRA_OIL
40
150
40
20
15
30
10
30
x
x
x
x
x
1
2
3
4
5
6
7
8
9
10
SUPERLUBE
HS%CYLGARD
LS%CYLGARD
HS%CY+TEST
ENGINEOILW
ENGINEOILA
EP GEAR
ULTRA_OIL
SYS LUBE_Y
HS%CY+TEST
40
150
40
100
15
30
10
30
40
30
20
70
15
40
6
15
4
10
20
20
40
40
x
x
x
x
x
[Name] [New BN] [Low BN] [High BN]
NON-SMART MODE
MANUALLY ENTERED
Edit on DIGI+ via SETUP
NEEDS NEW OIL CALIBRATION
= NOT EDITABLE
PC FILE ONLY
Edit on PC DIGI_CFG.csv
# BN OIL TYPE LIST #
ALARMS IN SMART MODE ONLY

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To calibrate
or re-calibrate
OILs
> OILs <
OK q to select OIL TYPE to calibrate OK
CAL
Follow on-screen instructions  START
Shake cell
SAVE (or DISCARD to repeat or abort calibration)
Clean cell  DONE
Repeat for all OIL TYPES to be calibrated
OK
BN OIL TYPE List Name, BN Value & Calibration
DIGI+ stores calibration data for up to 8 different OIL TYPES . In Smart DIGI+ mode stores calibration data separately for
up to 10 different
OIL TYPES (these can only be edited in DIGI_CFG.csv file on USB drive)
NOTE: It is recommended to use the oil grade or name as the “Name” during DIGI+ setup process
Action Visual Description
To assign a
name to OILs
> OILs <
OK q to select OIL TYPE OK
NAME
uq to select character NEXT
Repeat steps above and when nished press NEXT repeatedly until
OIL TYPE NAME VALID  OK
*NOT CALIBRATED*
NOTE: OIL TYPE needs a value of BN before calibration is possible.
To edit OILs
list
> OILs <
OK q to select OIL TYPE to edit OK
NAME uq to select character NEXT
Repeat steps above and when nished press NEXT repeatedly until
OIL TYPE NAME VALID  OK
*NOT CALIBRATED*
NOTE: OIL TYPE needs a value of BN before calibration is possible.
To assign a
BN value to
OILs
> OILs <
OK q to select OIL TYPE to edit OK
BN q to scroll through numbers OK
Repeat steps above and when nished press NEXT repeatedly until
OIL TYPE NAME VALID  OK
*NOT CALIBRATED*
NOTE: OIL TYPE needs a value of BN before calibration is possible.
Power on
SETUP

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Cleaning
Cleaning is required following each oil calibration and each test.
The following steps should be taken to ensure safety:
1. Contents should be disposed of carefully.
2. DIGI+ body upper and sample cup (including agitator for H2O testing) should be thoroughly
cleaned. Attention should be paid to ensuring no reagent residue is left in the O-ring and threaded
surfaces.
3. To clean the exterior and keypad, a lint-free cloth should be used (with a mild solvent if
necessary, for example, isopropyl alcohol). Water, water-based cleaning products or other
solvents must not be used as these may cause damage.

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Testing
Before starting the test:
• DIGI+ should be clean and dry (particular attention should be paid to the seal). See Cleaning
• EasySHIP reagent must be above 18 °C and should be shaken thoroughly
Test Menu Navigation
Water (H2O) - Single Test
RANGE* OK START
*Select the test range for the approximate
amount of water. If not known, select
0.1 % - 20.0 % to reduce risk of overpressure.
Follow on-screen
instructions
Note: Close and hand tighten only (1/8 turn max.)

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ABOUT BN TESTING AND CALIBRATION
• BN Calibration must take place for an OIL TYPE to be measured
• if the OIL TYPE is already calibrated, DIGI+ automatically selects measurement screen
• calibration takes place automatically if an uncalibrated OIL TYPE is selected
• see BN Calibration for further detail
Base Number (BN) - Single Test
Measure Used Oil
See BN Calibration
Select Oil using q
OK (Follow on-screen instructions)
Note: Close and hand tighten only (1/8 turn max.)

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Interpreting Results
Water
Water contamination may cause different problems in different types of lubricating oil, although corrosion is always
directly associated with water ingress. Whatever the equipment, water can displace the oil at contacting surfaces,
reducing the amount of lubrication and activating surfaces which may themselves act as catalysts for degradation of the
oil.
This is a particular problem with synthetic ester-based oils (e.g. many turbine lubes) which also react with any water
present (hydrolysis). Water in emulsified form can increase lubricant viscosity. On occasions it has caused gross instability
and dropout of the additive package. Problems will occur, whether visible or not, in any system in the presence of more
than about 0.2 % water (some systems are very intolerant to water contamination).
In highly loaded lubricated contacts, particularly where oil films are thin (for example on gear teeth), water contamination
can result in rapid failure through localised or general breakdown of oil film conditions. Alternatively, the mode of failure
could be progressive resulting from local or generalised corrosion of components within the systems and / or through
effects which impact on the functionality of the lubricant itself.
Sources
There are many potential sources of water contamination in any system including:
• leakage from oil coolers and steam heating coils
• charge air coolers
• condensation of atmospheric humidity
• blow-by gases from engine combustion spaces or past compressor ring packs
• leakage at tank vents (especially those exposed to weather)
• coolant jacket leaks through cracks or seals
• contaminated top up oil (especially in systems with a low tolerance to water)
Effects
Water is an important contaminant in all lubrication systems because of its potential to cause system failure via a number
of mechanisms. Water will:
• corrode unprotected metal surfaces
• attack bearing substrates
• cause instability of chemical additives in the lubricants
• encourage the formation of emulsions
• alter the lubricant vapour pressure
Water contamination within lubricating oil (especially crankcase and system oil) and in fuels can lead to
microbiological growth, forming yeast, mould and bacteria that will clog filters and rapidly corrode fuel systems