... low pressure loss 4, Easy installation Electronic flow switch (Thermal differential type)Principle Based on the principle ... Compact structure . 8, LED indicator display flow trend and switch state .Application Suitable for the gas and liquid measurement ... range: 100barTemperature gradient: 4°C/s Response time :1--13s,standard is 2sInitialization time : 8sElectrical protection: reversed-phase , short ...