Adhesive dispensing systems and methods

A sensing system comprising:

• a fluid channel through which a fluid flows;
• a sensor within the fluid channel, the sensor comprising:
• a printed circuit board (PCB);
• a aperture within the PCB comprising a receiving electrode spaced apart from a transmitting electrode;
• and
• wherein the fluid flows through the aperture in direct contact with the transmitting electrode and the receiving electrode and wherein, when a voltage is applied to the transmitting electrode, a current is received at the receiving electrode;
• and
• a communication component that communicates a calculated electrical parameter for the fluid, wherein the electrical parameter is calculated based on the received current and wherein the electrical parameter is an impedance, a conductivity or a dielectric constant.