... .3DN size: 3, 6, 10, 15, 20, 25, 32, 40, 50, 65, 80, 100, 150, 200, 250, 300, 350, 400, 450, 500 ... , 4 ~ 20mA standard; M-BUS, GPRS, CDMA optionalWorking temperatureambient temperature -40 ~ 80 (LCD displays wide temperature range -25 ~ 70 )Sensor pipeDie casting ...