Liquids, gases and steam — from low-flow dosing to large custody-transfer pipelines. Every YOYI instrument is factory-calibrated and backed by lifetime engineering support.

YYCO series — direct mass flow, density and temperature measurement with exceptional accuracy.
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YYEM series — for conductive liquids: water, wastewater, slurries and aggressive chemicals. No moving parts, no pressure loss.
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YYUS series — clamp-on and wetted transducers for water, HVAC, and non-invasive or portable measurement.
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YYVT series — steam, compressed air and gases with robust, maintenance-free construction.
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YYTM series — direct gas mass flow for energy management, compressed air and emissions monitoring.
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YYTB series — clean, low-viscosity liquids; custody transfer and precise batching.
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YY series — general purpose, high accuracy, high temperature, anti-corrosion, hygienic, data center cooling and differential pressure transmitters.
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YY radar, SUP-RD guided wave and WSU ultrasonic level meters — tanks, silos, reactors and corrosive media.
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YY-T/B/D/L/C truck loading skids, YY-S300 sampling skid and YY-V300 LNG vaporization skid — factory-integrated, custom-built.
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YYR RTD, YYC thermocouple, YYBY head transmitters and cable sensors — pipelines, machinery and OEM duty.
View Details →Send us your process conditions — our engineers will recommend the best-fit YOYI instrument within one business day.