Vernier Software and Technology
Vernier Software & Technology

Go Direct® Melt Station User Manual

Go Direct® Melt Station

The Go Direct Melt Station is a sensor used to measure the melting temperature of solid substances.

Note: Vernier products are designed for educational use. Our products are not designed nor are they recommended for any industrial, medical, or commercial process such as life support, patient diagnosis, control of a manufacturing process, or industrial testing of any kind.

What's Included

  • Go Direct Melt Station
  • Package of 100 capillary tubes, each with a closed end
  • AC power supply
  • Micro USB Cable

Compatible Software

The Go Direct® Melt Station may require a compatible interface and software. Choose a platform below to see compatible interface and software options.

  • LabQuest 2
    LabQuest 2

    Full Support

    The Go Direct® Melt Station is fully supported with LabQuest 2 (version 2.8.4), a standalone data logger with built-in graphing and analysis software.

    Learn more about LabQuest 2 »

    Compatibility Notes

    1. Wireless connection of this sensor to a LabQuest 2 requires a Go Wireless Bluetooth Adapter when used with some older LabQuest 2 models.
  • Computers
    Computers

    Software
    InterfaceGraphical Analysis 4 for ComputersVersion 4.7.1
    No interface requiredFull support 1 2
    LabQuest 2Full support 2 3 4

    Compatibility Notes

    1. For Bluetooth® connectivity, only computers running Windows 10 or Mac OS X 10.10 or newer are supported. The computer must also have a compatible Bluetooth 4.0+ radio.
    2. Software does not support the Data Tagging feature that is typically used with this sensor.
    3. Connect this sensor directly to a computer or Chromebook via a USB or wireless Bluetooth® connection for best results. Alternatively, this sensor is fully supported when used with LabQuest 2 when LabQuest 2 is connected to a computer or Chromebook via Wireless Data Sharing.
    4. Wireless connection of this sensor to a LabQuest 2 requires a Go Wireless Bluetooth Adapter when used with some older LabQuest 2 models.
  • Chromebook
    Chromebook

    Software
    InterfaceGraphical Analysis 4 for ChromeVersion 4.7.1
    No interface requiredFull support 1
    LabQuest 2Full support 1 2 3

    Compatibility Notes

    1. Software does not support the Data Tagging feature that is typically used with this sensor.
    2. Connect this sensor directly to a computer or Chromebook via a USB or wireless Bluetooth® connection for best results. Alternatively, this sensor is fully supported when used with LabQuest 2 when LabQuest 2 is connected to a computer or Chromebook via Wireless Data Sharing.
    3. Wireless connection of this sensor to a LabQuest 2 requires a Go Wireless Bluetooth Adapter when used with some older LabQuest 2 models.
  • iOS
    iOS

    Software
    InterfaceGraphical Analysis 4 for iOSVersion 4.7.1Graphical Analysis GW for iOSVersion 4.0.5
    No interface requiredFull support 1Partial support 1
    LabQuest 2Full support 1 2 3 4Full support 1 2 3 4

    Compatibility Notes

    1. Software does not support the Data Tagging feature that is typically used with this sensor.
    2. Connect this sensor directly to a supported mobile device via a wireless Bluetooth® connection for best results.
    3. iOS and Android devices can only connect to LabQuest 2 via Wireless Data Sharing.
    4. Wireless connection of this sensor to a LabQuest 2 requires a Go Wireless Bluetooth Adapter when used with some older LabQuest 2 models.
  • Android
    Android

    Software
    InterfaceGraphical Analysis 4 for AndroidVersion 4.7.1Graphical Analysis GW for AndroidVersion 3.2
    No interface requiredFull support 1Incompatible
    LabQuest 2Full support 1 2 3 4Full support 3 4

    Compatibility Notes

    1. Software does not support the Data Tagging feature that is typically used with this sensor.
    2. Connect this sensor directly to a supported mobile device via a wireless Bluetooth® connection for best results.
    3. iOS and Android devices can only connect to LabQuest 2 via Wireless Data Sharing.
    4. Wireless connection of this sensor to a LabQuest 2 requires a Go Wireless Bluetooth Adapter when used with some older LabQuest 2 models.

Getting Started

Please see the following link for platform-specific connection information:

www.vernier.com/start/gdx-mlt

Bluetooth Connection

USB Connection

  1. Install Graphical Analysis 4 on your computer, Chromebook™, or mobile device. See www.vernier.com/ga4 for software availability.
  2. Turn on your sensor by plugging in the AC power and turn the temperature knob to the cooling fan. The Bluetooth® LED will blink red.
  3. Launch Graphical Analysis 4.
  4. Click or tap Sensor Data Collection.
  5. Click or tap your Go Direct sensor from the list of Discovered Wireless Devices. Your sensor's ID is located near the barcode on the sensor. The Bluetooth LED will blink green when it is successfully connected.
  6. Click or tap Done to enter data-collection mode.
  1. Install Graphical Analysis 4 on your computer or Chromebook. If using LabQuest 2, make sure LabQuest App is up to date. See www.vernier.com/ga4 for software availability or www.vernier.com/downloads to update LabQuest App.
  2. Plug the sensor into AC power and turn the temperature knob to the cooling fan.
  3. Connect the sensor to the USB port.
  4. Launch Graphical Analysis 4 or turn on LabQuest 2. You are now ready to collect data.

Connecting the Sensor

See the following link for up-to-date connection information:

www.vernier.com/start/gdx-mlt

Using the Product

Connect the sensor following the steps in the Getting Started section of this user manual.

  1. Load a small portion of a solid substance into a capillary tube.
  2. Carefully place the capillary tube of solid into one of the three slots in the aluminum heating block of the Melt Station. You can tilt the Melt Station toward you slightly for a better look at the heating block.
  3. Tilt the Melt Station up or down slightly to get the best view of the solid sample through the viewing lens.
  4. Click Collect to begin data collection. On the Melt Station, turn the control knob to the Rapid Heat area. The red LED will come on, indicating the Melt Station is heating. Rapid Heat will warm your solid sample at a rate of >10°C/min.
  5. Observe the temperature vs. time graph. When the temperature is within about 10°C of the expected melting temperature of your solid sample, turn the control knob to that temperature, slowing the heating rate to ~1.5°C/min.
  6. Carefully observe your sample. At the first indication of the solid melting, note and record the temperature. When the entire solid has melted, note and record the temperature. The examine line can be used to help mark these spots while monitoring the substance melting. Text can be added using the Text Annotation feature in Graphical Analysis.
  7. Stop data collection. The run is automatically stored. On the Melt Station, turn the control knob to the Fan/Cooling setting. The blue LED will come on, indicating that the Melt Station is cooling.
  8. Prepare a second solid sample to test. Observe the temperature of the heating block in the meter. After the heating block cools to a suitably low temperature, you can begin heating the Melt Station again.

Care and Maintenance

Cleaning Outside Surfaces

Clean the outside metal surfaces of the Melt Station with a cloth dampened with a mild detergent solution. Do not use organic solvents to clean the Melt Station.

Removing Broken Capillary Tubes

Follow the steps below to remove a broken capillary tube from the Melt Station. Caution: Do not handle a broken capillary tube with your fingers. Wear safety glasses or safety goggles.

  1. Turn off the Melt Station and allow it to cool to room temperature. Unplug the power cord from the device.
  2. Place the Melt Station unit on its back side so the capillary tube slots are as close to horizontal as possible. This will make it easier to safely remove the glass shards.
  3. Remove the two threaded screws holding the lens panel in place. Set the screws and the viewing lens aside.
  4. Use a 3/32 inch hex key to remove the two screws holding the metal spring fingers in place. Set the screws and spring fingers aside. Use the same hex key to loosen the screw holding the glass window in place. Slide the glass window up to remove it, and set it aside. Caution: The edges of the glass may be sharp.
  5. Use an appropriate tool to carefully remove the broken capillary tube from its slot and deposit it in a glass waste container. If the capillary tube is loose in the slot, you can very carefully tip the Melt Station over to slide the tube into a waste container.
  6. Replace the glass window, metal fingers, and viewing lens. Carefully tighten the screws to be snug rather than extremely tight. Remember that you may want to remove these pieces again in the future.

Safety

The Melt Station is designed for use in an academic laboratory. Its intended purpose is to determine the melting temperature of a solid substance in the temperature range between ambient and 260°C. The safety guidelines listed below must be followed strictly during the operation of this device. Failure to comply with these guidelines violates the standards of safety set forth in this document and the standards expected as good laboratory practice.

  • Always wear safety goggles or safety glasses when using the Melt Station.
  • Do not use the Melt Station for any purpose other than its intended use, which is to measure the melting point of a solid substance.
  • Use the Melt Station under the supervision of a qualified chemistry instructor.
  • Place the Melt Station on a clean, level surface.
  • Make sure the Melt Station is a safe distance from solvents, containers of liquid or gaseous substances, and sources of water.
  • Do not use the Melt Station with flammable liquids or gases.
  • Do not allow the device to become wet. If it does, disconnect power to the device immediately and allow it to thoroughly dry.
  • Do not leave the device unattended while heating; monitor temperature at all times.
  • Turn off the Melt Station immediately after all testing is completed.
  • Do not alter or remove the protective metal walls that surround the heating block of the Melt Station.
  • The Melt Station is designed to operate in an upright position.
  • Do not touch the heating block while it is hot.
  • Check the temperature of the heating block before inserting a capillary tube of solid sample.
  • The heating block can remain hot for a short period of time after use, even when off.
  • Use the Melt Station in a well-ventilated room.
  • The Melt Station is not designed for liquids or wet environments.
  • The Melt Station is not designed or intended for use with samples that could explode or ignite by heat, friction, or spark.
  • While some routine maintenance can be performed on the Melt Station, these tasks should be performed only by qualified personnel.
  • Do not use the Melt Station if any malfunction is suspected.
  • Do not modify or install additional parts to the Melt Station.
  • Unplug the Melt Station before storing.

Safety Automatic Shut Off

An important safety feature of the Melt Station is the Automatic Shut Off. After you turn the control knob to heating, an internal timer starts a 60-minute countdown. After 60 minutes have elapsed, the Melt Station will automatically turn off the heating element and the yellow LED will come on. To reset the Melt Station, simply turn the control knob to the cooling position or the Off position.

Specifications

Dimensions

Base–13 cm × 15 cm × 1.5 cm, Body–9 cm × 9 cm × 24 cm

Melt Station weight

1.0 kg (2.2 lbs.)

Melt Station + AC adapter weight: 1.2 kg (2.6 lbs.)

Range

Ambient to 260°C

Temperature sensor

Class A, Platinum Resistance Temperature Detector (RTD)

Resolution

0.10°C

Accuracy

±0.31 + 0.0006T, where T is the temperature in Celsius

Typical

±0.4°C (<200°C); ± 0.5 deg C (>200°C)

Calibration

Factory calibrated

Power

 24VDC to unit, universal AC adapter 100–240 VAC 50–60 Hz input

Power consumption

40W max., < 0.5A @ 110V

Safety shut down

Heating block is automatically powered down after approximately sixty minutes of heating

Capillary tubes

1.4–1.8 mm outside diameter, 100 mm length

Capillary tube slots

3

Viewing lens

27 mm diameter (functional), 30 mm (actual)

Lighting of capillary slots

3 white LEDs

Lighting of control dial

Red LED (indicates heating mode), blue LED (indicates cooling mode with cooling fan running), yellow LED (safety shut off activated)

How the Sensor Works

The Melt Station contains an aluminum heating block. There are three slots for capillary tubes in the heating block. A capillary tube containing a solid substance is placed in the heating block and the block is heated by an embedded element. An RTD-based temperature sensor, also embedded in the heating block, measures the temperature of the heating block and therefore the capillary tube of substance. The temperature sensor connects to Vernier data-collection software. The substance to be melted is viewed through a 6X lens.

The temperature control on the Melt Station is divided into three regions.

  • The first area, next to the Off position, is for cooling the heating block after you have completed a melting temperature run. When you turn the control knob to the cooling position, the fan and the blue LED will come on.
  • The second area is divided into specific temperature settings. These temperatures correspond to the expected melting temperature of the substance. You will choose one of these settings when the Melt Station has warmed to within about 10°C of the expected melting temperature of your solid sample. The warming rate will slow to ~1.5°C/min at each of these settings.
  • The third area is Rapid Heat. In Rapid Heat, the Melt Station will warm at a rate of >10°C/min.

Calibration

The temperature sensor embedded in the aluminum heating block of the Melt Station will never need to be calibrated. The sensor is carefully calibrated before it ships, and this unique calibration is stored on a smart chip in the sensor. Note: There is no method to perform a calibration of this sensor in any of our software programs.

Troubleshooting

For troubleshooting and FAQs, see www.vernier.com/til/3852

Repair Information

If you have followed the troubleshooting steps and are still having trouble with your Go Direct Melt Station, contact Vernier Technical Support at support@vernier.com or call 888-837-6437. Support specialists will work with you to determine if the unit needs to be sent in for repair. At that time, a Return Merchandise Authorization (RMA) number will be issued and instructions will be communicated on how to return the unit for repair.

Accessories/Replacements

Item Order Code
Micro USB Cable

CB-USB-MICRO

Warranty

Vernier warrants this product to be free from defects in materials and workmanship for a period of five years from the date of shipment to the customer. This warranty does not cover damage to the product caused by abuse or improper use. This warranty covers educational institutions only.

Disposal

When disposing of this electronic product, do not treat it as household waste. Its disposal is subject to regulations that vary by country and region. This item should be given to an applicable collection point for the recycling of electrical and electronic equipment. By ensuring that this product is disposed of correctly, you help prevent potential negative consequences on human health or on the environment. The recycling of materials will help to conserve natural resources. For more detailed information about recycling this product, contact your local city office or your disposal service.

The symbol, shown here, indicates that this product must not be disposed of in a standard waste container.

Contact Support

Fill out our online support form or call us toll-free at 1-888-837-6437.

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