TANDELTA OQSExISG2, User Manual

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12.2.3 Partially / Fully Integrated Sensors
Sensors integrated into third party solutions can feed data directly into these systems either
using Analog signals or Digital Signal protocols. For more information on the available
communication protocols, please contact Tan Delta Support.
Oil condition is output in analog format on Pin 3 and is linearly scaled from 4mA to 20mA. This
can easily be converted to the TDN or Loss Factor scale using the table provided in appendix
10.1. A clean oil should provide an output of about 8mA. For some common applications we
recommend the warning/alarm settings in the table below. Any value below 4mA indicates a
fault. The analog output on pin 2 provides a linearly scaled measure of Oil Temperature in °C
between -30°C (4mA) and +130°C (20mA)
– See appendix 10.2
Engine
(e.g. Diesel)
Gas Engine Hydraulic Compressor Transmission
High Alarm
5.6mA
(1140 TDN)
5.6mA
(1140 TDN)
6.4mA
(1060 TDN)
6.7mA
(1050 TDN)
6mA
(1100 TDN)
High Warning
6.4mA
(1060 TDN)
6.4mA
(1060 TDN)
7mA
(1000 TDN)
7mA
(1000 TDN)
7mA
(1000 TDN)
Condition OK
Low Warning
13mA
(400 TDN)
9.4mA
(760 TDN)
9.4mA
(760 TDN)
10.5mA
(650 TDN)
10mA
(700 TDN)
Low Alarm
14mA
(300 TDN)
10.4mA
(660 TDN)
10.4mA
(660 TDN)
11mA
(600 TDN)
12mA
(500 TDN)
Figure 74 - Generic Warning / Alarms (inc 4-20mA)
The third-party systems using a 4-20mA analog signal should be configured using the above
table as a guide and may subsequently be fine-tuned with the assistance of Tan Delta Support.
The following Table details the logic that can be applied to installations into third-party
systems to determine various event variables. If your Display Express or third-party device
allows this level of customisation, you may wish to utilise some of the detailed algorithm logic
to provide warnings or alarms through the third-party display / system: