In-mold resin pressure measuring system

A1. Higher noise resistance prevents malfunctions and adverse effects on the pressure measuring amplifiers and pressure sensors due to electromagnetic noise from electrical equipment and other devices nearby. This makes it possible to obtain consistent measurements, which in turn helps improve traceability management.

A2. Use the amplifier interconnection cables (available separately) to connect multiple amplifiers. The corresponding number of junction boxes and junction cables are also required. (Cable product code: WCM0010-R6P-R6P N-MPS08B catalog page 31)

A3. Waveform data is saved as CSV files on the connected PC and can be displayed in graph form.

A4. The amplifier is connected to the PC directly using a LAN cable. The LAN connection is used for high-speed communications. Wireless connection is not available.

A5. The volume of the waveform data will vary depending on sampling rate and measurement time. Refer to the table below.

A6. The pressure waveform will appear on the measurement screen. Once the hard disk capacity falls below the set available capacity, the “Available disk space” indication on the measurement screen will turn red. No data can be saved thereafter. We recommend transferring data elsewhere at frequent intervals.

A7. Yes. (Depending on length, the cable may be susceptible to noise effects.)

A8.Yes. The MPS08B also provides an analog voltage output. If the molding machine has an interface for inputting an analog voltage and the machine is capable of displaying these values on the monitor, it can also display waveforms.

A9. The data is managed and monitored for each molding cycle shot. A trigger signal is input at the start of each shot. Zero resetting is also performed simultaneously to cancel temperature drift.

A10. The sensor flange diameter has changed from 5.7 mm to 6.0 mm.
The cable and connecting wires have also been modified to improve noise resistance. Thus, the connector type also differs.

A11. The sensors can withstand at least 1 million cycles in repeated load testing (at normal temperature, 80 MPa, with cycle period of 1.2 s, and 3 mm diameter). This does not constitute a guarantee. Factors such as usage conditions may affect durability.

A12. The maximum tensile force that can be applied to the cable perpendicular to the pin (direction A in the figure below) before it fails is 9.5 kg.

A13. The profile cannot be machined for EP type pressure sensors, as machining to prevent rotation is not possible. However, using button type pressure sensors allows machining because existing pins can be used unchanged.

A14. Yes. This can be determined from the waveform at ejection on the measurement screen.

A15. A simple way is using a tester connector cable (available separately) to check whether a sensor is functioning.
(Tester connector cable product code: ATCS catalog page 31)

A16. Yes, provided the in-mold pressure does not exceed 100 MPa and the mold temperature does not exceed 150°C within the specifications range.

A17. No special temperature compensation circuit is included. Resistance fluctuations due to cable temperature and cable length are canceled by the circuit configuration. Strain gauge temperature drift is canceled by zero resetting when a trigger signal is input (at the start of measurement).

A18.The sensors are based on proprietary Futaba specifications and cannot be connected for measurement to other instruments.

A19. This is generally less than half the injection peak pressure. Refer to the data for the molding machine.

A20. The maximum tensile force that can be applied to the cable in a vertical direction (direction A in the figure below) before it fails is 9.5 kg.

A21. Install so that the sensor and ejector pin centers are aligned (within ±0.3 mm).

A22. The pressure-receiving area is calculated as the projected area in the mold opening direction. The area for a 1 mm diameter round pin is calculated using the diameter 1 mm, even if the tip face is machined diagonally. The pressure acts on the diagonally cut face along a perpendicular axis, but this will be the same when converted to the pressure in the mold opening direction. This means you can use the same equation.

A23. The maximum displacement under the rated load is 0.02 mm.

A24. Sensors can withstand at least 10 million cycles in repeated load testing (SSB01KN08×06: 23°C, 1,200 N, with cycle period of 0.5 s).
This does not constitute a guarantee. Factors such as usage conditions may affect durability.

A25. No. They cannot be used together.

A26. Yes, by connecting with an adapter (available separately). Note that CE compliance is assured only when used with the new sensors (SS series). (Adapter product code: ACAE01 catalog page 31)
Measurements with a mixed configuration of EPS series and SS series are not possible.

A27. The earlier amplifiers will continue to be sold until stocks run out. The earlier sensors will continue to be sold for the foreseeable future.

A28. With the EP type sensors, measurements are calibrated for each pin diameter, so measurements do not vary. With button type sensors, adjustments are performed by entering the pin diameter on the setup screen of the measurement software. Measurements do not vary.

A29. It may be possible to repair a damaged sensor cable for a fee,depending on the location of the breakage.Examination of the actual part involved is required. (Please contact your nearest Futaba sales office.)
※Repairs are generally possible if the breakage is at least 50 mm from the sensor flange.

A30. This can be repaired for a fee. (Please contact your nearest Futaba sales office.)

A31. It may be due to a disconnection in the sensor or communication error between the amplifier and the PC. For information on checking the sensor, refer to Q17. A communication error may be due to poor connection. Try disconnecting and then reconnecting the cable.

A32. You can measure pressure no matter where it’s inserted. To detect short shots, insert close to where short shots occur.

A33. The data obtained must be matched to product quality.One approach is to set a threshold based on tolerances provided for maximum and minimum peak data values saved for stabilized molding.

A34. Waveforms will differ, even for the same mold interior, depending on the sensor location. An ideal waveform can be described as one that can be consistently reproduced and meets required quality levels.

A35. This can damage electronic components inside the amplifier. Connect to a nonvoltage contact input (e.g., a relay). The same applies for the alarm reset signal.

A36. Refer to the following table:

A37. This is the value indicating the maximum difference between the calibration curve and the straight line connecting the output at zero load with the output at the rated load as a percentage of the rating.

A38. Sensitivity fluctuations are fluctuations due to fluctuations in operating temperature. They are expressed as fluctuation rate per 1°C.

A39. An English language instruction manual is available. Instruction manuals in other languages are planned for the future.

A40.This function on the measurement software screen allows the user to switch languages at the touch of a button. It currently supports English and Japanese. Other languages will be added in the future.

A41. The CE marking is a standards compliance marking required for specified products sold in the European Union (EU). It indicates compliance with the Essential Safety Requirements (ESRs) stipulated by the EU (EC) directive. “CE” is an acronym for the French phrase “Conformité Européene” (European Conformity). Products undergo specified compliance evaluations by the manufacturers (importers) or third-party certification bodies and carry the CE marking on the products themselves, on packaging, and on accompanying documentation, guaranteeing free retail and distribution within the EU region. There are two procedures, depending on the specific product: cases in which certification is obtained from a third-party certification body (“Notified Body” or “NB”) and cases in which self-certification is acceptable. The CE marking is required only when exporting to EU countries (from Japan External Trade Organization (JETRO)). Compliance with European standards, however, can be said to demonstrate high performance and safety.