Gas roots flow meter
LLQ‑series intelligent gas roots flow meter is volumetric type with built‑in temperature‑pressure sensors for automatic T‑P compensation. Aluminum‑alloy body, DN25‑DN100, accuracy 1.5%, flow range 1‑450 m³/h, max working pressure 1.6 MPa, IP65 protection. It supports 24VDC / 3.6V lithium‑battery dual power supply, outputs including pulse, 4‑20mA and RS485; Type‑B version supports GPRS wireless transmission. Boasting ultra‑wide turndown ratio up to 1:216, low starting‑flow (0.04 m³/h), low pressure loss and six‑segment coefficient correction. It stores data against power‑failure loss, suitable for non‑corrosive gas metering: natural gas, city gas, propane, nitrogen and industrial inert gas. PDF datasheet available for download.
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