Abstract: A sensor-on-clamp device for use in a drilling system, the clamp being a tool joint clamp and houses one or more sensors mounted to the tool joint clamp, a power source and sensor data transmitting means. One or more sensors for use in a drilling system, said sensors being powerable by a single commercially available, replaceable battery.

Abstract: A sensor-on-clamp device is provided, wherein said clamp houses one or more sensors 8, a power source and sensor data transmitting means. One or more sensors 8 are provided for use in a drilling system, wherein said sensors 8 are mounted to a connection clamp of the drilling system. One or more sensors 8 are further provided for use in a drilling system, wherein said sensors 8 collect data relating to operation of the drilling system, digitize said data and transmit the data to a remote receiver hub. One or more sensors 8 are further still provided for use in a drilling system, said sensors 8 being powerable by a single commercially available, replaceable battery. A battery holder is also provided having a battery housing for housing batteries in a hazardous environment, wherein said batteries are replaceable within the battery holder the battery holder stays in the hazardous environment. A method is further provided for replacing a battery in a hazardous environment.