Yes, using a TS1 programming kit (TS1-PK) and downloading the BEP software from the BEP Site here the TS1 can be programmed to different tank configurations.
This can happen when your sender is not set up for the correct gauge. You will need to connect the sender to the TS1-PK and reprogram the sender output(e.g. 10-180 ohm setting will make a Teleflex or Faria gauge read opposite. 240-33 ohm will make a VDO gauge read opposite).
The input needs to be re-calibrated. See attached manual INST-600-DCSM.
The cable supplied with the TS1 is 3 core/conductor 0.3 mm2 (22 AWG) cable. That is good for up to 10 meters (32 feet). Use 0.5 mm2 (20 AWG) after 10 meters (32 feet).
Check Software Version. Version 20100618 we changed resistors to help with this drift. Instructions here.
Inspect signal cable from shunt to meter. A damaged cable will cause current reading problems.
The input has not been configured properly, please refer to the instructions for information on how to properly configure your DCSM.
The sensor will detect hydrocarbons in other products and strong adhesives. These can cause false alarms.