OLE T5020 Tank Gauge

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.

Same-day dispatch from one of our national warehouses on in-stock orders placed before 2pm AEST.

30-day returns on unopened, stocked items — customer pays return freight. Non-stocked / special-order items are subject to a 50% restocking fee.

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