horiba MV-2000 - User Manual

Questions and Answers

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Tammy JordanAug 13, 2025
What to do if the temperature of horiba MV-2000 MV does not stabilize?
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  Elizabeth CastilloAug 13, 2025
  If the temperature of the MV (Mixing Valve) is unstable, it could be due to several reasons. First, the PID constants of the temperature regulators may be improper; perform auto-tuning under working conditions. Second, a short circuit in the heater power supply could be the cause; turn off the power and inspect the heater power line. Third, check for thermocouple contact failure by examining the connection of the thermocouples to the temperature regulators and MV. Finally, if the control cycle of the temperature regulators is too long, use temperature regulators with a control period of 1 second or less, or adjust the setting accordingly.
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Daniel RichardsonAug 18, 2025
What to do if horiba MV-2000 Vaporizers have seat leakage?
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  william15Aug 18, 2025
  If you observe seat leakage, indicated by Liquid flow meter output fluctuations when the valve is forcibly closed, consider these potential causes: * The primary pressure may be too high. Reduce it to the specified level. * The forced closing signal might not be input, or the setting signal isn't a minus value. Check the wiring and signal. * The temperature of the MV could be too high. Lower it to the specified temperature. * Ensure the valve cable is connected to the MV or LIQUID FLOW METER. * Piping leaks may also contribute. Pinpoint and fix any leaks present.
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Michael SimmonsAug 30, 2025
Why does the temperature of horiba MV-2000 Vaporizers MV not stabilize during vaporization?
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  Amanda ParksAug 30, 2025
  If the temperature of the MV does not stabilize during vaporization, it could be due to a few reasons. First, the material might be fed in a quantity exceeding the vaporization limit; forcibly close the valve of MV before starting vaporization. Second, the flow rate might be unstable; refer to the countermeasures for unstable flow rate indication. Finally, the liquid might not be vaporizing inside, leading to condensation; check the secondary pressure, temperature, and warm-up time.
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Nancy HarrisNov 5, 2025
What to do if the flow rate of Horiba Vaporizers does not stabilize?
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  Cynthia ClarkNov 6, 2025
  If the flow rate of the carrier MFC or the liquid flow meter indication does not stabilize, several factors could be responsible: * The primary pressure might be too low or too high. Ensure that you set the primary pressure to the specified level. * High secondary pressure can cause vapor condensation, so adjust the secondary pressure as specified. * The MV may not be at the correct temperature; verify the temperature setting and the readings on the temperature regulators. * Air bubbles might be present in the liquid material. Investigate the cause and implement appropriate measures. * The flow meter may be disordered. Stop the material supply and confirm that the flow meter indicates the zero point and remains stable. * There might be seat leakage from the MV. Input a forced ...
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Robyn MedinaNov 24, 2025
What to do if the temperature of horiba MV-2000 Vaporizers MV does not increase?
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  Valerie GillNov 24, 2025
  If the temperature of the MV is not increasing, consider the following potential causes: * Check if power is being supplied to the heaters and ensure the wiring is correct. * Verify that signals from the temperature regulators are correctly wired to the SSRs or power regulators. * The temperature switch in the MV may have been activated. If a self-hold type switch is used, allow the MV to cool below the return temperature. Wait about 1 hour after the heater power supply to MV has stopped. If the issue persists after a temperature drop, and heater power does not rise, check heater resistance and electrical connections. * Inspect the heater power line for shorts. Turn off the power before checking. * Confirm that the specified setting data has been input to the temperature regulat...