A system for controlling a coiled tubing injector head includes a hydraulic control line in fluid communication with each drive motor, a valve associated with one or both hydraulic control lines, and a sensor associated with each drive motor. The desulphurating agent can include, compared with the total weight of the agent, the following mineralogical phases: 10 to 60% of C2S, 0 to 50% of C3A, 0 to 50% of C2AS, 0to 70% of C12A7, and 0 to 60% of CA. The remote participant device is operable for receiving real-time or live videoaudio or other user input and transmitting this information to the game or activity location. The communication controller is capable of controlling the memory transfer of transmitted and received data. The second substrate includes a second electrode formed thereon, and the surface optical device is bonded to the second substrate with the first electrode and the second electrode in electrical contact with each other. The purge system can protect the irrigation system from high-pressure conditions, handle multiple error conditions, and maintain water valve settings during power loss.