.ut-cat{color:#333;font-family:Arial,Helvetica,sans-serif;line-height:1.5;} .ut-cat h4{color:#1a1a1a;font-size:1.15em;margin:1.5em 0 .5em;padding-bottom:.25em;border-bottom:2px solid #ccc;} .ut-cat h2{color:#1a1a1a;font-size:1.25em;margin:1.2em 0 .4em;} .ut-cat h3{color:#222;font-size:1.05em;margin:1em 0 .3em;} .ut-cat p{margin:.6em 0;} .ut-cat ul{margin:.5em 0;padding-left:1.4em;}.ut-cat li{margin:.25em 0;} .ut-cat img{max-width:100%;height:auto;} .ut-cat table{border-collapse:collapse;width:100%;margin:.5em 0;} .ut-cat th,.ut-cat td{border:1px solid #ddd;padding:6px 10px;text-align:left;vertical-align:top;} .ut-cat td strong{color:#222;} Overview The UNI-T UTE9811+ is a compact single-phase digital power meter measuring 3V – 600V / 5mA – 20A to 1W – 12kW. It performs PLL-synchronized harmonic analysis to the 50th order with THD and crest-factor measurement — built for power-quality and distortion work. It is built for bench and in-rack power measurement on power-supply, converter and appliance-energy work, with RS-232 and RS-485 for datalogging and integration into automated test. Choosing Your Model — UTE9800+ Series The UTE9800+ name covers three distinct compact power meters. Compare the full series before selecting: Model What Sets It Apart Measurement V / A Range UTE9802+ AC / DC / AC+DC True RMS True power, V, A, W, PF, Hz 3V – 600V / 0.5mA – 20A UTE9806+ Apparent power + V / PF alarm limits V, A, P, VA, PF, Hz, Vpeak, Apeak 0.5V – 600V / 0.05mA – 10A UTE9811+ 50th-order harmonic analysis (PLL) V, A, W, PF, Hz, THD, CF 3V – 600V / 5mA – 20A The three UTE9800+ models are not a progression — each is a distinct instrument chosen by what you need to measure: mixed-mode true RMS (9802+), limit/alarm testing (9806+), or harmonic and distortion analysis (9811+). For single-phase high-voltage bench measurement or three-phase work, see the UTE310 Series (600 V / 1000 V single-phase) and the UTE323 Series (3-channel three-phase) — distinct higher-tier instrument lines. Key Features 50th-order harmonic analysis, PLL-synchronized THD and crest-factor (CF) measurement True power, V, A, W, PF and frequency 3V – 600V / 5mA – 20A measurement range, to 1W – 12kW Voltage resolution 0.01V; current resolution 1mA Measurement bandwidth 40Hz – 70Hz RS-232 and RS-485 for datalogging and ATE integration 4.3-inch LCD display UNI-T UTE9811+ Details 50th-Order Harmonic Analysis, PLL-Synchronized The UTE9811+ performs phase-locked-loop synchronized harmonic analysis to the 50th order, with total harmonic distortion (THD) and crest-factor measurement — the data set for power-quality and distortion assessment on non-linear loads. RS-232 / RS-485 Communication Both RS-232 and RS-485 are standard, with SCPI and Modbus support, for datalogging and integration into multi-drop production-line monitoring or an automated test framework. Compact Bench / In-Rack Form Factor The compact chassis fits a test bench or an instrument rack and leaves the front-panel reading clear for V, A, W, PF and frequency at a glance during a measurement run. Applications Power-Quality & Harmonic Work PLL-synchronized 50th-order harmonic analysis with THD and crest factor quantifies distortion on rectifier and PFC front ends for power-quality assessment. Pre-Compliance Distortion Screening Bench harmonic and THD screening flags distortion problems early in design verification, before formal compliance testing. Accessories and Family Options UTE-series test cables and the UTE-M01-US North-American test fixture support safe connection to standard plug loads. Frequently Asked Questions How does the UTE9811+ differ from the other UTE9800+ models? Each UTE9800+ model is a distinct instrument: the UTE9802+ adds AC/DC/AC+DC true-RMS modes, the UTE9806+ adds apparent power and limit alarms, and the UTE9811+ adds 50th-order harmonic analysis. They are chosen by measurement need, not as a tier progression. Does it have a computer interface? Yes — RS-232 and RS-485 with SCPI and Modbus support, for datalogging and automated test. Is this a three-phase meter? No. The UTE9800+ models are single-phase (1P2W). For three-phase measurement, see the UTE323 Series. Specifications Model Number UTE9811+ Voltage range 3V – 600V Current range 5mA – 20A Power range 1W – 12kW Voltage resolution 0.01V Current resolution 1mA Bandwidth 40Hz – 70Hz Measurement modes AC Parameters V, A, W, PF, Hz, THD, CF Harmonic analysis 1st – 50th (PLL-synced) Wiring mode 1P2W Display 4.3-inch LCD Interface RS-232 / RS-485 Documentation UTE9811+ Datasheet, User Manual, and Software/Firmware Downloads Options & Accessories Included in box: Power cord RS232 Cable English download guide multi-language safety manual calibration report (COC)
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