Electrochemical sensor assembly and system

A method of monitoring a parameter of a fluid in a remote location, the method comprising:

• deploying a sensor assembly to the remote location, the sensor assembly comprising a plurality of sensors configured to measure the parameter of the fluid and an actuator configured to selectively hermetically seal or fluidly connect each sensor to the fluid, when the plurality of sensors are not hermetically sealed;
• fluidly connecting at least one first sensor of the plurality of sensors to the fluid to measure the parameter of the fluid;
• transmitting to an external controller data comprising values for the measured parameter of the fluid, the external controller configured to determine an operating interval of the at least one first sensor responsive to the data;
• and
• operating the actuator to fluidly connect at least one second sensor of the plurality of sensors to the fluid on a pre-determined schedule or responsive to the external controller determining the operating interval of the at least one first sensor is trending to expiration.

A sensing system, comprising:

• a sensor assembly comprising:
• a housing comprising a plurality of compartments capable of being reversibly hermetically sealed or fluidly connected to a source of a fluid, when the plurality of compartments are not hermetically sealed,
• an actuator configured to selectively hermetically seal or fluidly connect each compartment of the plurality of compartments,
• a plurality of sensors configured to measure a parameter of the fluid, each sensor of the plurality of sensors positioned in a corresponding compartment of the plurality of compartments,
• a transmitter operably connected to the plurality of sensors, and
• a receiver operably connected to the actuator;
• and
• an external controller operably connectable to the transmitter and the receiver, the external controller configured to receive data from the transmitter comprising values for the measured parameter of the fluid and transmit a signal to the receiver providing operating instructions for the actuator responsive to the data.