Controllers & Temperature Controllers
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LU-50 Flow Totalizer
The LU-50 flow totalizer is suitable for measuring the flow of various liquids, gases and steam. It performs compensation calculations based on measured pressure and offers multiple input modes.
I. Overview
The LU-50 flow totalizer is suitable for flow measurement of various liquids, gases and steam, and can perform compensation calculation based on the measured pressure. It offers multiple input modes and can be connected to frequency pulse sensors such as vortex flowmeters, or to other flow transmitters with 0-10 mA or 4-20 mA output.
The LU-50 flow totalizer adopts a table-lookup compensation method, enabling high-accuracy compensation calculation for superheated steam and saturated steam. It provides multiple display modes and can display cumulative flow, instantaneous flow, pressure, temperature, frequency, density and time, with the display refresh cycle freely settable. According to different input frequencies, the LU-50 flow totalizer can set ten different flow coefficients and automatically correct the flow coefficient by interpolation algorithm. The LU-50 flow totalizer adopts WATCHDOG circuit, software trap, redundancy, digital filtering and other technologies, giving the whole instrument strong anti-interference capability.
| Main Technical Specifications | |||
| Basic error: | ±(0.2%F.S±1) digits | Flow signal: | Pulse greater than 2V, 0-6.5KHz frequency |
| Pressure signal: | 0-10mA, 4-20mA current | Temperature signal: | Pt100 RTD |
| Over-range: | Sb | Sampling period: | 0.8 s |
| Output signal: | Transmitter output current 0-10mA or 4-20mA | Data protection: | Data retained for ten years after power failure |
| Alarm output: | AC220V/3A | Communication interface: | RS232 RS485 |
| Display: | Dual 4-digit LED display, automatic decimal point shift | Applications: | Temperature, pressure, level, etc. |
| Output power supply: | DC12V/50mA,DC24V/50mA | Power consumption: | 4W |
III. Dimensions and panel cutout (W×H×D) Unit: mm Type A: 96×96×105 Cutout: 92×92 Type B: 48×96×105 Cutout: 45×92 Type C: 96×48×105 Cutout: 92×45 Type D: 160×80×105 Cutout: 152×76 Type E: 80×160×105 Cutout: 76×152 Type F: 72×72×105 Cutout: 68×68
LU-50 Flow Totalizer User Manual
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