USER-FRIENDLY MEASURING DEVICES filter alerts mm/ps series Combination of a liquid column manometer and a differential pressure switch In many situations filter monitoring requires an alarm signal and a local display. Our filter alerts are the right solution for these situations. The filter alerts combine differential pressure switches with manometers into one practical product offering. applications The filter alerts are a solution for systems requiring visual indication of pressure on site and a switching point signal. The filter alerts are ideal for general-purpose work in airconditioning and ventilation, especially in monitoring of air filters for contamination. Copyright HK Instruments 2017 www.hkinstruments.fi Datasheet Version 4.0 2017

Environment: Operating temperature: -20...+60 °C Storage temperature: -40...+85 °C Gauge fluid: Red: s.g. 0.786 kg/dm (15 °C) (Isopar M) Physical Case (MM&PS): ABS Cover: MM: PMMA PS: PC Membrane (PS): silicone Duct connectors (PS): ABS Tubing (PS): PVC Screws (MM): PC Performance Switching difference: 30 Pa Accuracy of switching point (low limit typ.): 40 Pa ±5 Pa Accuracy of switching point (high limit typ.): 600 Pa ±30 Pa Electrical rating, resistive load: 3 A / 250 VAC Electrical rating, inductive load: 2 A / 250 VAC Maximum pressure: 50 kPa Service life: > 1 000 000 switching operations Technical...