A particle that passes through the detection region traverses the full dispersed spectrum of excitation light, and the fluorescence emissions from the particle are continuously measured as it passes through the detection region.

A sensor network comprises a plurality of sensing nodes distributed across a sensor field.

Said detection takes place through the side viewing window.

A sensor unit contained within the sensor housing receives an input signal through the window.

A control arrangement (S) has a sense resistance (R4) coupled to the sense electrode (S1) and across which a sense voltage is developed by the sense current (I3).

The sensing coil is disposed between the sensing bars, and the sensing bars and sensing coil extend through the power coil core opening.

A current sensing circuit supplies an accurate sense signal (CMIa) representing a varying momentary current (Isa) flowing through a sense impedance (Rsa).

An antenna (26) projects a detection zone (28) across a road.

A sense resistor (RS) in series with the at least one coil (14) provides for detecting a current therethrough responsive to a voltage thereacross.

The high pressure sensing assembly and the low pressure sensing assembly do not substantially impede air flow through the valve.

The sense coil is rotationally orientated with the axis (136) of the sense coil windings directed through the second end.

A color detection unit detects color information of the detection light that has passed through the liquid body.

Detecting the radiation comprises detecting radiation at the first detector region, receiving radiation that has passed through the first detector region at the second detector region, and detecting radiation at the second detector region.

A signal is sent through the first galvanic isolator and received through the second galvanic isolator by the detection unit.

Through the present invention, explosive detection can be performed with high throughput and high detection accuracy at the same time.