CONTACT DETAILS

Tan Delta Systems Ltd

1 Carrera Court
Church Lane
Dinnington
Sheffield
UK
S25 2RG

Tel: +44 (0)845 094 8710

support@tandeltasystems.com

BUSINESS HOURS
Monday to Friday: 8:30am to 5:30pm
GMT. Support email monitored seven
days per week

OIL QUALITY
GATEWAY (OQTG)
USER GUIDE
Issue 2
Contents
1 Introduction.......................................................................................... 3
IMPORTANT SAFETY NOTES .................................................................. 3
2 Measuring Oil Quality .............................................................................. 4
Introduction .................................................................................... 4
Tan Delta Number ............................................................................. 4
Oil Degradation ................................................................................ 4
TDN Value vs Loss Factor Percentage ...................................................... 4
Traffic Lights................................................................................... 5
Numbering/Levels ............................................................................. 5
Clean Point (Start Point) ..................................................................... 5
Loss Factor ..................................................................................... 6
Oil Quality Index .............................................................................. 6
3 What’s in the Box? .................................................................................. 7
What you need ................................................................................. 7
4 Gateway Configuration ............................................................................ 8
Set up Configuration USB .................................................................... 8
4.1.1 Run software ........................................................................... 8
4.1.2 Select required settings .............................................................. 9
4.1.3 Save Settings .......................................................................... 11
4.1.4 Upload Settings to OQTg ............................................................ 12
5 Gateway Installation ............................................................................. 13
System Architecture ......................................................................... 13
Mounting OQTg ............................................................................... 13
Wiring Junction Box .......................................................................... 13
5.3.1 Junction Box Wiring Diagram ....................................................... 14
6 Sensor Configuration ............................................................................. 15
Set Up .......................................................................................... 15
6.1.1 Connect OQSxG2 ..................................................................... 15
6.1.2 Select Sensor ......................................................................... 16
6.1.3 Communications Settings ........................................................... 17
6.1.4 Advanced Settings.................................................................... 17
6.1.5 Oil Configuration ..................................................................... 18
Oil Database .................................................................................. 18
7 Sensor Installation ................................................................................ 19
Precautions.................................................................................... 19
Choosing the Sensor Mounting Location ................................................... 20
Fitting Method ................................................................................ 20
8 Product Specification ............................................................................ 22
Environmental Specifications ............................................................... 22
Physical Characteristics ..................................................................... 22
Connectivity................................................................................... 22
Electrical ...................................................................................... 22

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 System Specifications ........................................................................ 22
Junction Box .................................................................................. 23
Standards and Approvals .................................................................... 23

Figures
Figure 1 Oil Degradation Curve ............................................................................. 4
Figure 2 Example of oil quality warnings and alarms .................................................... 5
Figure 3 OQTg Contents ..................................................................................... 7
Figure 4 OQTg System Architecture ........................................................................ 8
Figure 5 OQTg Configurator ................................................................................. 8
Figure 6 OQTg Configurator Home Screen ................................................................ 9
Figure 7 LAN Settings ........................................................................................ 9
Figure 8 WLAN Settings .................................................................................... 10
Figure 9 Default Network .................................................................................. 11
Figure 10 Create New Network ........................................................................... 11
Figure 11 Save Settings to USB............................................................................ 12
Figure 12 System Architecture ............................................................................ 13
Figure 13 Junction Box Wiring Diagram – Standard Cable............................................. 14
Figure 14 Junction Box Wiring Diagram – Twisted Pair Cable ...... Error! Bookmark not defined.
Figure 15 Setting up the OQSxG2 for configuration ................................................... 15
Figure 16 Search Screen ................................................................................... 16
Figure 17 Communication Options ....................................................................... 17
Figure 18 Advanced Settings .............................................................................. 17
Figure 19 Oil Selector ...................................................................................... 18
Figure 20 Installing the sensor ............................................................................ 21

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1 Introduction
The Tan Delta Oil Quality Gateway is a comprehensive networking device. The OQTGateway —
coupled with TDOnline and/or another 3rd party service — provides remote visibility for all
connected assets.

IMPORTANT SAFETY NOTES

Please pay attention to following safety notes:

Gateway is not IECEx certified.

Never reassemble, repair or tamper with the gateway.
Ensure that the supply voltage is within the specified range.
Ensure the load currents do not exceed the rated value.
Check all the wiring for correct connection before powering the unit.

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2 Measuring Oil Quality
Introduction
There are a number of ways to describe oil wear and oil condition:

Tan Delta Number (TDN)

Loss Factor Percentage
Oil Quality Index

Tan Delta Number

To make it easier to monitor and trend the overall oil condition, regardless of your current
method, we have introduced the “Tan Delta Number” (TDN). The TDN has been designed to be
easy to understand, to give a very good level of accuracy and to create a common language for
describing overall oil wear and oil condition, which can also be combined with other methods
such as ISO cleanliness levels and laboratory test results.

The full scale goes from 1200 to 0, with the value decreasing as oil quality degrades. For most
applications, the useable range is from 1050 to 300.

Oil Degradation
It is important to understand that oil degradation is exponential and your use of Tan Delta
products should reflect this. Once the TDN begins to fall at an increasing rate you know the oil
is nearing the end of its life and you need to be vigilant. To help with this, our display units
have warning/alarm and ‘rate of change’ functions to alert you to any potential issues.

Figure 1 Oil Degradation Curve

TDN Value vs Loss Factor Percentage

The underlying value which the sensor is recording for the oil condition is the Loss Factor
Percentage which is then converted into a TDN value as shown in Appendix 9.1.

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 Traffic Lights
First and foremost, the TDN scale offers a ‘traffic light’ view of oil quality, so there is a Green
section, an Amber section and a Red section to illustrate OK, Warning and Alarm conditions
respectively. The thresholds for these sections can be user-defined for any application. Factors
such as likelihood/nature of contamination, how critical the machinery is and manufacturers’
guidelines should all be considered when setting the thresholds. Please contact your distributor
or support@tandeltasystems.com for further guidance on setting your warning/alarm levels.

Numbering/Levels
The TDN scale extends from 1200 down to 0. For most applications, the ‘green’ section
includes all values from 1050 to 420. ‘Amber’ (warning) will go from 400 to 300: this is the
point at which you need to monitor the quality closely and prepare to filter or change the oil.
The ‘red’ (alarm) section applies to values of 300 and below. At this point, the oil needs to be
changed as it is no longer providing sufficient lubrication.

Clean Point (Start Point)

The starting point for a new oil is called the Clean Point. For most oils, this will generally be
between 950 and 850 on the TDN scale. The actual value will depend on a number of factors
but most importantly how pure the base stock is and what additive packages have been
included.

Figure 2 Example of oil quality warnings and alarms

As the oil begins to deteriorate the value will decrease.

NOTE: TDN does not start at 1000 for a new, clean oil, as some oils can be improved by
using sophisticated on-line or off-line filtration. Oil can also improve on the TDN scale, as
well as deteriorate.

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 Loss Factor
A clean oil has a Loss Factor Percentage of approximately 0% and then as the oil changes and
degrades this Loss Factor Percentage increases. For most applications, oil would be considered
to be degraded at a Loss Factor Percentage of 25% and at the “end of life” at a Loss Factor
Percentage of 30% or above.

Oil Quality Index

The OQI measurement scale (-2 to +21) offers a ‘traffic light’ view of oil quality. There is a
green section (1-13), an amber section (14-17) and a red section (18-20) to mark OK, Warning
and Alarm thresholds respectively. The OQI scale is linear within the safe, green level but the
amount of change reduces by half for the warning, amber level and alarm, red level. Unlike the
TDN scale, the green, amber and red sections cannot be adjusted.

Oil Quality Loss Factor

Index Description min max
21 Maximum  33.75
20 32.50 33.74
19 Severe 31.25 32.49
18 30.00 31.24
17 28.75 29.99
16 27.50 28.74
15 Significant 26.25 27.49
14 25.00 26.24
13 22.50 24.99
12 20.00 22.49
11 Moderate 17.50 19.99
10 15.00 17.49
9 12.50 14.99
8 10.00 12.49
7 Mild 7.50 9.99
6 5.00 7.49
5 2.50 4.99
4 0.00 2.49
3 Good -2.50 -0.01
2 -5.00 -2.51
1 -7.50 -5.01
0 Low -10.00 -7.51
-12.50 -10.01
-15.00 -12.51
-1
Error/In Air -17.50 -15.01
-20.00 -17.51
-2 Fault  20.00

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 3 What’s in the Box?
When unpacking your OQSxG2 unit, please ensure that all the following items are present. If any
of the items are missing, please contact your dealer or support@tandeltasystems.com.

OQTg Oil Quality Gateway

OQTg Junction Box
OQTg Gateway to Junction Box cable (Cable H)
Roof Mounting Combined Antenna
Product USB
Quick Start Guide
Certificate of Compliance
Certificate of Conformity
Warranty

Figure 3 OQTg Contents

What you need

Windows 10 PC
2 core power cable suitable for 9-30V DC, minimum 1.6A
Fixings
<2.5mm flat Screwdrivers
Small Crosspoint
20mm spanner or adjustable wrench
Fine nose pliers for inserting wires

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4 Gateway Configuration
Set up Configuration USB
Before using the OQTg it should be configured to work on the particular network which you
have chosen to use. This is done by writing the configuration settings to a USB stick and
uploading to the device. This section assumes you have sensors already configured and installed
for use with the OQTg. If you have not yet configured or installed your sensors, please refer to
Sections 6 and 7.

4.1.1 Run software

Note: Complete the steps below prior to mounting device

1. Connect OQTg, Junction Box and 1-6 OQSxG2 sensors as per diagram below, for detailed
wiring diagram, please see Installation section.

Figure 4 OQTg System Architecture

2. Remove translucent clip-on cover at front of gateway

3. Insert Tan Delta USB stick into laptop or PC and navigate to OQGatewayConfigurator.exe
(Application File) as shown below. Double click on file to launch program.

Figure 5 OQTg Configurator

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4.1.2 Select required settings
As shown in the screenshot below, the Configurator has 3 sections, and you just need to use the
one which applies to your chosen network type.

Figure 6 OQTg Configurator Home Screen

4.1.2.1 Configure LAN (ethernet)

1. Select from either Dynamic (DHCP) or Static – Please consult with you network
administrator to ensure correct option is chosen.
2. If static is used, please enter IP Address, Subnet Mask and Gateway

Figure 7 LAN Settings

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4.1.2.2 Configure WLAN (Wi-Fi)
1. Select from either Dynamic (DHCP) or Static – Please consult with your network
administrator to ensure correct option is chosen.
2. If static is used, please enter IP Address, Subnet Mask and Gateway

Figure 8 WLAN Settings

3. Enter the details of Wi-Fi network to be connected to – Please consult with network
administrator.
a. SSID
b. Security Type
c. Password

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4.1.2.3 Configure GPRS (mobile data)
1. List of pre-configured networks will be shown, if your required network is available,
please go to step 4.1.3. If your network is not shown, proceed from step 2.

Figure 9 Default Network

2. Scroll to bottom of list and click ‘+’ to add new network. List of required parameters is
displayed, all information for your specific network will be available online, or from your
carrier.

3. Click ‘create’.

Figure 10 Create New Network

4.1.3 Save Settings

Once configuration details are entered, click ‘Save configuration To File’. This will automatically
be saved to the USB stick.

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Close OQTG Configurator and safely remove USB stick from computer.

Figure 11 Save Settings to USB

4.1.4 Upload Settings to OQTg

Turn on power to gateway.

Device will take approximately 90 seconds to boot up. A green LED will show once device is
operational.

Insert memory stick into USB port of OQTg. Wait for the Amber LED to turn on and off again
before removing USB memory stick.

Once your network configuration has been loaded, the OQTg will reboot. Wait for green LED to
turn on – may take up to 2 minutes.

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 5 Gateway Installation
System Architecture
The diagram below shows the overall architecture of the Gateway system, when connected to
a sensor, via the Junction Box. This configuration can support 1-6 sensors, with up to 10 sensors
supported by adding an additional Junction Box.

Figure 12 System Architecture

Mounting OQTg
The OQTg has mounting brackets allowing it to be mounted to any suitable surface. Please see
the environmental and approvals specifications in Section 9 Product Specification and ensure
the mounting location meets these requirements.

Wiring Junction Box

The diagram on the next page shows how the sensors and power should be wired up inside the
Junction Box.

Please note this diagram shows our standard cable color scheme (for cables up to 15m, for
longer cables we will use twisted pair cable

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5.3.1 Junction Box Wiring Diagram

The diagram below shows how to wire OQSxG2 sensors, if you have a previous version of sensor
the cable colours will be different, please refer to the correct manual for that product. Please
contact support@tandaltasystems.com for further assistance.

Figure 13 Junction Box Wiring Diagram

Note: Diagram shows alternate sensor positions fitted, but positions can be filled
consecutively as well.

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6 Sensor Configuration
Before installation, configure the OQSxG2 to your specifications using the Tan Delta
Configuration and Data Management Software (CADS). This is a software application, supplied
on the USB memory stick, which must be installed on a PC or laptop.

Set Up
To install the software:

Connect the PC or laptop to the OQSxG2 using the configuration cable.

Connect the memory stick to a USB port on your PC or laptop. Allow the PC/laptop to
automatically update drivers, if needed.

When prompted, select Open folder to view files.

Launch the setup.exe file and follow the instructions in the setup wizard.

When prompted, click on Install.

When installation is complete, CADS is displayed.

It may take up to a minute for the software to identify the OQSxG2.

Figure 14 Setting up the OQSxG2 for configuration

6.1.1 Connect OQSxG2

First you must select ‘Configure Oil Quality Sensor’ from the Home Screen. Next, connect the
OQSxG2 to your computer using the configuration cable included with the sensor as shown in
Figure 3.

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6.1.2 Select Sensor
You will now see a list of all connected devices, identified by serial number. Select the
required device.

Figure 15 Search Screen

Click the arrow to proceed.

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6.1.3 Communications Settings
You will have a list of options for the device you want to connect the sensor to:

Figure 16 Communication Options

Select ‘Oil Quality Telemetry Gateway’ and assign the sensor a number. Each sensor
connected to the same Gateway must have a unique number.

6.1.4 Advanced Settings

If you have a version 3 sensor, an extra setting is available from the sensor config page –
advanced settings. Clicking this link will show the following settings:

Figure 17 Advanced Settings

This function uses hysteresis to reduce the noise caused by changes in the oil such as
temperature. In order for the algorithms to settle the sensor must go through at least one
‘thermal cycle’ of the application, this just means running the machine from standby until it
reaches its highest normal operating temperature.

We recommend you start with the filter disabled and run the sensor in-situ for a few weeks
(definitely over a few thermal cycles of the application). If the data is relatively smooth leave
the smoothing disabled, if not, enable the smoothing.

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6.1.5 Oil Configuration
This page allows you to select any oil from our database. The boxes at the top of each column
allow you to either search or filter the database with the drop-down menu or by typing directly
into the box.

If the oil you require is not in the database, please contact support@tandeltasystems.com for
assistance.

Figure 18 Oil Selector

Once your required oil profile is selected, use the arrow to proceed. A pop-up message will
request confirmation that new settings should be sent to the sensor. Once confirmed, the
settings will be written to the sensor.

Note: Do not disconnect sensor until CADS has displayed confirmation that the
configuration has been successful.

Oil Database
The oil database contains configuration profiles for different oils which can be programmed
into any sensor. The software comes pre-loaded with the latest version and will automatically
update periodically with the new oils we have added. If you have requested for a specific oil to
be profiled, you may have been sent the database which will need to be loaded into the
software manually.

From the home screen click the cog icon ‘Application Settings’ to bring up the settings
menu and select ‘Update From File’.
Select ‘OilDb.oils’ from file location and select ‘Save’.

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7 Sensor Installation
Precautions
Please read these instructions before installing the oil quality sensor. The sensor has been
designed to be robust, however it is liable to be damaged by mistreatment. The following must
be noted:

Install the sensor into the equipment before attempting electrical/wiring connections.
To avoid thread damage, do not use with taper fittings.
Tighten with a correctly adjusted size spanner (32mm) and do not over tighten.
Do not attempt to screw or tighten the sensor using the body. Always use the “Hex”
head with the correct size spanner (32mm).
To prevent vibration having any adverse effects to the cable/sensor connectors, the
cable should either be mounted on the same plane at the sensor, or have a loop fitted
to absorb vibration, as per diagrams below;

Figure 19 Cable Fitting

Do not twist the cable relative to the sensor head.

Keep away from sharp edges which may cut into the cable.
Do not bend the cable, minimum bend radius = 50mm (2 inches).
Where possible, keep the cable away from sources of heat, (such as an engine block),
and electrical interfaces.
Oil pressure should not exceed 20 bar.

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 Choosing the Sensor Mounting Location
The performance of the sensor will be enhanced through careful consideration of the mounting
location. The following guidelines should be followed, See Figure 8:

Sensor should be in a horizontal position.

The sensor should not be mounted in the bottom of a sump since the sensor head may
become restricted preventing correct operation.
Dynamic oil flow is necessary; do not mount in places where the oil is likely to stagnate
or be static, since the oil in the sensor needs to be representative of the whole system.
When the oil quality sensor is mounted in a pipeline, please ensure that the sensor will
not restrict flow.
When mounting the oil quality sensor in a lubrication system, for maximum
performance, please ensure the sensor is located prior to the oil filters, oil coolers etc.
to ensure oil is representative of the whole system.

Fitting Method
The standard thread is ½ inch BSPP/NPT requiring an 32mm spanner for installation.
Decide on an appropriate location for sensor head installation.
Drain the lubricant sufficiently to allow the sensor to be fitted.
Install the sensor head into the selected location/position, torque to 5Nm being careful
not to over tighten.
Route the cable, fixing (cable ties) at appropriate intervals.
Avoid sharp edges and hot surfaces.

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Figure 20 Installing the sensor

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8 Product Specification
Environmental Specifications
Protection Rating IP67 When connected
Storage Temperature -45C to +85C
Operating Temperature -30C to +85C

Physical Characteristics
Material Glass reinforced plastic
Dimensions 149mm x 135mm x 58mm
Weight 400g

Connectivity
Physical Connectors FAKRA antenna connectors
System connector: TE 776163-1 (35 pins)
Micro SIM slot
Ethernet (Under IP67 cover, requires a gland for use in
installation)
USB host 2.0 (Used for mass storage devices only)
GSM/GPRS GSM850 + EGSM900 + GSM1800 + GSM1900
Class 4 (2W) GSM850/EGSM900
Class 1 (1W) GSM1800/GSM1900

GPRS Class B, Class 10 (4+2)

HSPA+ (3G) and LTE (4G) support
WiFi 2.4GHz: 802.11 b/g/n/ac
5.0GHz: 802.11 a/n/ac

Electrical
Power Supply 10-30V DC
Power Consumption approx. 15W – Plus Sensors ~0.6W each

System Specifications
CPU ARM Cortex A8 @800MHz clock speed
Linux OS Kernel 4.4
Memory 512MByte DDR3
NAND Flash 1GByte
Allows 1-year internal datalogging
Sensor oil temperature -20C to +120C
normal operating range
Sensor oil temperature +/-3% of full range (+/-4.2°C)
accuracy
Sensor internal temperature -20C to +120°C
operating range
Sensor internal temperature +/-3% of full range (+/-4.2°C)
accuracy
Sensor 4-20mA accuracy +/- 1% of full range (+/- 0.2mA)*

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 Junction Box
Material ABS
Temperature -20C to +80C
Protection IP67 when cables/blanking plugs fitted correctly
Capacity Connects up to 6 Digital Cables and Sensors via Ampseal
connector to Gateway cable. DC +10V to +30V inlet
provided.
Mounting Mounting by 4 off M6 screws to bulkhead/wall etc.
Size 198mm wide by 170mm high (incl. glands) by 70mm deep

Standards and Approvals

CE
E - Automotive Zulassung entsprechend Kfz-EMV-Richtlinie
R & TTE
ROHS Directive

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