I completely agree- a bms in conjunction with a true gas valve takes care of the majority of the safety. I was cautioning towards using an innappropriate method of ignition.
I have unfortunately been witness to systems that either malfunctioned or were not designed correctly- with some...
I work in the propane vaporizer/ natural gas line heater industry. Typically a hysteresis loop is used with an on/off burner controller, or a three stage set point hysteresis loop is used with an off/low/hi setup when heating a directly fired water bath.
Be very careful when using a direct...
I would look at a burner management system for direct ignition. Fenwal makes a nice inexpensive unit. You will need to come up with a spark/sense probe for it to work. Check out speedway for the different kinds available (google speedway pilots to find them)
You could also look at a real...