Metal Tube Rotameter is a device that measures the volumetric flow rate of fluid in a closed tube. It belongs to a class of meters called variable-area flowmeters, which measure flow rate by allowing the cross-sectional area the fluid travels through to vary, causing a measurable effect. LZ Range Water (20℃) (01~200000) L/h Air (20,0.1013MPa) (0.03~3000) m³/h Range ratio Standard 10:1 Optional 20:1 Accuracy Standard: 1.5% Optional:1% Gas: 1.5% Pressure standard：DN15~DN50≤4.0MPa DN80~DN200≤1.6MPa Optioanl: DN15~DN50≤32MPa DN80~DN200≤16MPa Connection Flange, Clamp, Thread, Sanity thread Medium temperature Standard: -20℃~120℃ PTFE 0℃~80℃ High temp: 120℃~450℃ low temp: -80℃~-20℃ Environment temperature Remote type: -40℃~85℃ Pointer type/local alarm type -40℃~100℃ Power supply Standard type: 24VDC two-wire system (4-20) mA (12VDC~32VDC) Alarm type: 24VDC multi-wire system (4-20) mA (12VDC~32VDC) AC type: (100~240) VAC 50Hz~60Hz Battery type: 3.6V@9AH lithium battery Load resistance RLmax: 600Ω Alarm Output Upper and lower limit instantaneous flow alarm Local alarm type: upper limit, lower limit or upper and lower limit instantaneous flow alarm (Contact capacity 1A@30VDC) Upper limit and lower limit alarm hold range is a maximum of 60% of range, and the minimum interval between upper and lower limit alarms is 10% of range Pulse output Cumulative pulse output is output of optocoupler signal isolation Darlington tube (internal 24VDC power supply, maximum current 8mA) Ingress protection IP65
