Reduction of LPG Truck Loading Time

Either fix what you have or double the capacity of your pumping system. The cost and related efforts are probably specific to your area and needs.

If your paid by the hour dont worry about it.

To add to TCM Tech post... the control system which supports the loading is only one part. the pumping system... return lines how much energy can be put into the system before LPG transitions to gas. maintaining the proper pressure and temperature would be done in the system... also knowing the before TAR weight of the vehicle can then calculate how much to add to the tanker... so would need weigh scale inputs... These would all be part of the equation to evaluate the cost to implement the solution... then this has to be factored to the ROI based on the 50 mins of savings per truck... Sounds like you need an automation engineering company... if the pumps and piping are already in place....

Have done this in the past with DCS companies proividing tickets and accounting information... the standalone solutions offer a get what you pay for solution... if you can maintain it and they do not go out of business then you may be able to get support... a PLC or DCS answer then would be based on the skills of the programmer and the support at the faciltiy to maintain that equipment... again the soultion will be only as good as the maintenance...

In addition to the above, make sure that the pipeline velocity stays below 1m/s, otherwise there may be a risk of static electricity build-up in the non-conductive liquids being pumped and it causing unwanted effects.