The P350 and P356 pressure sensors from Kavlico Corp., Moorpark, CA, meet the NSF/ANSI Standard 61 for water filtration and wastewater treatment requirements. The ceramic capacitive P350 measures pressures from 0–5 through 0–150 psia or psig, provides a linear amplified 0.5–4.5 VDC output, and is suited for measuring water level and pump pressure. The ceramic capacitive P356 low differential/gauge pressure provides pressure measurement ranges from 0.5–5 psig/psid and a linear amplified 0.5–4.5 VDC output. It is suited for monitoring flow and acting as part of an early warning system for slow moving or stoppage of movement of wastewater within the pump line. Sensors are EMI/RFI protected, withstand shock and vibration, and have overvoltage, reverse polarity, and short-circuit protection.