Inductive vs photoelectric Sensors. In proximity sensors for steel and power plants: Target, Flush vs Non-flush, 3-wire PNP/NPN, IP65 and dust checks. What to look for before purchasing?

For a short range radar level transmitter on a vessel where the liquid sits 100 mm to 1600 mm below the flange, the spec that decides everything is the blocking distance (also called dead band or near-range limit).

France and Germany supermarket refrigeration OT attacks in 2026, plus CERT-FR and BSI steps operators can take. Cold-chain lessons for India.

A warehouse temperature and humidity monitoring system for agri commodities measures two different things.

Ambient relative humidity (RH) and temperature tell you about the air in the shed;

Grain moisture tells you about the stock.

PT100 for remote monitoring: wire it direct as 2, 3 or 4 wire RTD, or add a head mounted 4-20mA transmitter? Cable length, accuracy, noise and cost compared.

Why data centers are noisy, which sources reach neighbours, CPCB and WHO numbers, and how should engineers control and log boundary noise in India.