Instrument for Measuring Smoke Density in Smokehouse

Instrument used to measure smoke density in smokehouses is:

Correct Answer: Electric Eye

Smoke density in a smokehouse is measured using an Electric eye — a photoelectric instrument that measures the opacity/transmittance of the smoke to quantify its density.

How the Electric Eye Works

• A light source (beam) is directed across the smokehouse to a photoelectric sensor.
• Denser smoke absorbs/scatters more light → less light reaches the sensor → lower output signal.
• The reading correlates to smoke density/concentration.

Why Smoke Density Control Matters

• Too little smoke → insufficient bacteriostatic effect; poor colour and flavour development.
• Too much smoke → excessive deposition of PAH (polycyclic aromatic hydrocarbons — potential carcinogens) on meat surface; bitter taste.
• Optimal smoke density ensures consistent product quality and food safety.

Distinguish from Other Instruments

• Densitometer — measures optical density of liquids/films (used in photography/lab); not typically used for smokehouse control
• Anemometer — measures wind/air speed
• Penetrometer — measures firmness/texture of food products including meat