Ole T5020 Tank Gauge

Overview

The OLE T5020 Automatic Tank Gauge, from GO Industrial, is an accurate, yet cost effective instrument to measure and report on the level of liquids within a tank.  The OLE T5020 reads a hydrostatic pressure sensor that is suspended into the tank.  Accuracy is +/- 0.5%. 

Data Sheet
GO Data Sheet OLE T5020
Manuals
GO Manual OLE T5020 Quick Start
GO Manual OLE T5020 Configurator Software
GO Manual OLE T5020 Modbus
GO Manual OLE T5020 Wiring Diagrams
Software
GO Software OLE T5020 Configuration Software.zip

Specifications

Supplied with Console and Probe Assembly, suitable for tanks up to 3m in height

• Accuracy +/- 0.5% or better.
• Litres Display, % Bar and Alarm Status,
• Can accept up to 3 additional probes including:
  • Temperature Probe
  • High Level Probe or Water Bottom Sensor
  • Bund Probe
• 4-20 mA output for BMS + Modbus RTU as standard
• Suitable for any height / shape of Tank.
• Low Installation & Maintenance Costs
• IP65 weatherproof enclosure
• Alarm Test Functions, two button auto reset operation
• Single power connection for multi-functions
• Replaces separate Gauge, High / Low and Bund Alarms
• Adjustable backlighting - note backlight turns off after 1 hour
• Adjustable Screen Resolution
• Adjustable Safe Fill Level Setting
• Suitable with Diesel, Biodiesel up to B100, HVO, AdBlue and Coolant / Antifreeze
• Tank probes are an electronic pressure sensor with a DN25 (1") M BSP fitting.
• Level probes must be suspended 50mm from the bottom of the tank.
• 1 gauge required per tank. Slave display option available.
• Options- Choose between bund probe or water bottom sensor
• Relay board fits inside gauge housing, 4 volt free outputs

Installation

• With simplicity in mind, the T5020 tank gauge can be installed in less than 1 hour.
• Sensor into tank, wired to display, mounted on wall or pipe.
• Plug in lap top configuration.
• Power supply can be 24vdc, so no mains power required (Multi power supply included, 12/24vdc or 100/240 vac)

Inputs / Outputs

• Power Supply 18-24 vdc (with optional 110-240 vac power supply)
• Input : 1 x Tank Sensor 4-20 mA (new or existing measuring sensor)
• Input : 2 x Digital inputs, Normally Closed (H and B Alarms)
• Output: 1 x Modbus RS485 with registers for all features
• Output: 1 x 4-20 Output: 4-20 mA proportional to Litres Capacity.
• Output: 4 x Level Triggers. 24vdc as std, or Volt Free Relay Option
• Output: 1 x Bund Condition Digital condition (NC To BMS)

FAQ's / Trouble Shooting

Siren will not sound when the test button is pressed

• On T4020 / T5020 the test button must be pressed for 5 seconds before the siren will sound. Check the 8-way green connector is fitted correctly (see wiring diagram). When R5 relays are incorporated the siren, connection is on the front 8-way green connector.

High level Alarm failed to sound

• If the M alarm symbol is Blacked out and there is a cross through it, the unit has Alarmed and has been acknowledged.
• Pressing the test button will sound the alarm and pressing again will stop it.

Gauge reads LOW

• If the sensor is reversed wired = LOW
• If the sensor is not connected = LOW
• If the sensor output is less than 3.8mA = Low

Gauge reads HIGH

• If the sensor wires are broken it will read LOW Sensor has failed / shorted out
• Water ingress into the sensor reference pipe

Display does not read litres = Blank

• Water ingress into junction box shorting out gauge
• Water ingress into reference port tube in sensor
• Power has failed, check with a multi meter

Gauge litres are drifting more tank ½ %

• Water ingress into sensor reference pipe
• Sensor is ending its life.
• Check milliamps
• Vent on tank has blockages
• High winds in the area cause pressure fluctuation, increase damping on screen settings

Sensor replaced and gauge reads wrong / lower or Higher than it should

• Work out the percentage the gauge reads incorrectly
• Example - 15000L was put in and the gauge only registered 12000L. 12000/15000 = 0.8
• If they have put in a 3.0m sensor in place of a 2.5m sensor, 2.5/3.0 = 0.833 so may need to change the sensor parameters in the gauge setup

Garbled Screen Display

• The display is broken up and does not show all pixels.
• Try power down the unit and then back up.
• Usually caused by power spikes on generators.
• Can be caused by incorrect RS-485 connection / disconnection (Modbus RTU)

New gauge setup does not read correct litres

• Gauge has been configured by client and the litres does not match the dip value or calculated value in the tank.
• This is usually because the sensor parameters have been set wrongly, and the “B” values have been set as the tank height rather than the SENSOR SPAN + “A” OFFSET.
• So, a 3.0m sensor should be set A 0.05 if set 50mm off the bottom of the tanks and the “B” value would be 3.05.
• This is 3.0m sensor plus the 50mm offset.

Relay settings not showing on the display

• When using relays the active alarms will display on the front screen, unless there is a BundAlarm fitted in which case the M Master symbol will show and the B Bund symbol.
• The relaysare still active just not shown on the front display.

Relay R4 and R5

• The R4 has 4 level trigger points, M,1,2,3.
• The R5 has 4 level trigger points and one volt free out for the B (Bund) as well.
• The M(Master) alarm can be acknowledged from the front panel and this action resets this output.

Testing Alarm

• The test feature is a press and hold for 5 seconds to activate.
• Press again to mute.

Unable to connect the gauge to PC / Laptop

• The Laptop connection is with a USB to RS-485 cable.
• You need to know which “Port” thecable is associated with.
• This needs to be set in the Program Settings.
• Please see the section in the manual that advises how to do this. (See pages 6 to 8).
• Please do not call GO Industrial if communication is the issue as we are not IT experts.

Gauge reads HIGH or LOW

• The sensor parameters must be set based on the sensor range and NOT the tank height.

Alarm trigger point errors

• These can be reset by connection to a laptop and running the OLD configuration software

Displayed Litres is LOW

• Damage to the input circuitry can make the gauge read low by 5% and 10%.
• Check the board for a burning smell.
• The board is usually beyond economical repair and suggest purchasing a new board, Part No. T4020-0002B.

Bund Alarm Connection

• Bund alarm is connected but does not operate.
• Check the black jumper is on the 2 pins next to the green 2-way connector. (See page 4).
• Power down and then back up and the B symbol will show on the display.

H Alarm

• H (HIGH or Water) alarm is connected but does not operate.
• Check the black jumper is onthe 2 pins next to the green 2-way connector. (See page 4).
• Power down and then back upand the B symbol will show on the display.