We are offering battery powered converter.The aliamag amc4000 series converter is a microprocessor based intelligent transmitter that can be paired with any of the alia amf series sensors. The unit features multiple display parameters including flow rate, flow total, diagnostics, programming and troubleshooting. Features battery supply feed with 23 years life in normal working condition.Accuracy of +-0.3% value of readingbi-directionally measure flow and pulse output3 lines of lcd display flowrate and totalizerstore 99 times of flowrate & totalizer for power onoffip67ip68 protection class specificationdisplay: 3 lines of lcd flow unit:m3hr , m3min , m3sec , lhr , lmin , lmin , gph , gpm , gpsaccuracy:+-0.3% of reading (velocity >= 0.5 ms)+-0.0015 ms (velocity < 0.5 ms)pulse output:open collectorload:3 30 vdc, max. 20 mapulse rate:1)scaled pulse ( literpulse, other)2)frequency: 15000 hzdata storage:operation parameters and totalizer are stored by eeprom for more than 10 yearsprotection class:ip 67ip 68(submersible)explosion proof, exd(ib)ibqiibt5ambient temp.:-25 +65deg.cpower supply:3.6v battery, size dbattery life:23 yearsweight:2.0 kg (compact)4.3 kg (separate)mounting:wall mountingbracket on 2'' pipecompact version(install on sensor)