Introduction
The Bakon BK191 is a precise digital thermometer designed for accurate temperature measurement of soldering iron tips and other applications. It features an LCD display, a wide measurement range, and is compatible with K(CA)Thermocouple sensors. This manual provides essential information for the safe and effective use of your device.
What's in the Box
Upon unpacking, please ensure all items are present:
- Bakon BK191 Thermometer Unit
- 10 x Temperature Sensors (Model: 191-211)
- User Manual (PDF version available here)
Note: The package does not contain batteries. A 006P DC9V dry battery is required for operation.
Setup
- Install Battery: Open the battery compartment and insert a 006P DC9V dry battery into the battery slot.
- Install Temperature Sensor:
- Insert the red side of the sensor into the red connector.
- Insert the blue side of the sensor into the blue connector.
- Press the push button to insert the balance into the conductor column.
Figure 4: Installing the Temperature Sensing Wire - Initial Power-On Check: Turn on the power switch. If the room temperature is displayed on the screen, the thermometer is ready for use.
Operating Instructions
- Measuring Soldering Iron Tip Temperature:
- Dip new solder onto the soldering tip.
- Gently touch the soldering tip (with solder) to the test point on the thermometer.
- After 2 to 3 seconds, the actual temperature will be displayed on the screen.
Figure 5: Measuring Soldering Iron Tip Temperature Video 1: Demonstration of Bakon BK191 Soldering Iron Tip Temperature Measurement.
- Time Delay Switch: The delay switch button, when pressed once, allows the device to be used for 5 minutes before going to sleep. Press it again to wake up the screen and continue use.
Figure 6: Screen Display and Time Delay Switch - Multi-Purpose Temperature Measurement: The BK191 can be used with external probes for various temperature measurements, including tin furnace, liquid, and surface temperatures.
Figure 7: Multi-Purpose Probe Usage - Power Off: When not in use, turn off the power switch to conserve battery life.
Maintenance and Precautions
- Sensor Care: The temperature sensor is made of very thin silk thread (0.2mm diameter). Handle it carefully and avoid extruding it to prevent damage.
- Shell Protection: The thermometer's shell is made of plastic. Do not allow a hot soldering tip to touch the surface of the device.
- Test Point Longevity: The test point is plated with a special alloy. Prolonged use may damage the alloy layer, leading to incorrect test results. A single sensor can be used approximately 50 times before needing replacement.
- Cleaning: Clean any flux residue on the connectors with alcohol. Do not use thinner or benzine, as these can damage the device.
- Battery Replacement: If the display shows a battery alarm symbol (e.g., a battery icon), the dry battery is low and may not provide accurate temperature readings. Replace the battery immediately.
Exchange Components
Replacement parts are available to ensure continued accurate operation:
| Model | Name | Quantity |
|---|---|---|
| 191-211 | Sensor | 10pcs |
Troubleshooting
- Inaccurate Temperature Readings:
- Ensure the soldering tip is properly tinned before testing.
- Check the temperature sensor for damage or wear. If the test point's alloy layer is damaged from prolonged use (approx. 50 uses), replace the sensor.
- Verify that the battery is not low. Replace the 006P DC9V battery if the battery alarm symbol is displayed.
- Display Not Working / Battery Alarm:
- Check battery installation.
- Replace the 006P DC9V dry battery if the battery alarm symbol is displayed or if the screen is blank.
Specifications
| Thermometer Body | |
|---|---|
| Model | BK191 |
| Resolving Rate | 1℃ |
| Range of Measurement | 0 ~ 700℃ |
| Applied Sensor | K(CA)Thermocouple |
| Accuracy | ±3℃ (in 300~500℃ range) |
| Display | 3½ LCD Digital Display (with Battery Alarm) |
| Power Supply | 006P DC9V Dry Battery |
| Life of Battery | More than 150 hours |
| Outer Dimensions (L×W×H) | 160mm × 80mm × 45mm |
| Weight | About 200g |
| Environmental Temperature Range | 0 ~ 40℃ |
| Relative Humidity (RH) | 20-80% |
User Tips
- Always have a spare 006P DC9V battery on hand, as the device does not include one and is essential for operation.
- To ensure consistent accuracy, replace the temperature sensor after approximately 50 uses, or if you notice inconsistent readings.
- Keep the test point clean from flux buildup to maintain optimal contact and measurement precision.
Warranty and Support
Warranty Terms:
- A one-month repair warranty is provided if the customer feedback form is returned to the company within one month of purchase.
- The Repair Warranty and Purchase Certificate must be presented for warranty claims. The warranty is only valid if all required documents are available.
- The warranty does not cover damage resulting from abuse, carelessness, improper installation, accident, mishandling during shipment, connection to improper line voltage, or servicing by unauthorized personnel.
- After the warranty period, charged repair services are available.
Contact Information:
SHENZHEN BAKON ELECTRONIC TECHNOLOGY CO.,LTD.
- Address (Shenzhen): Ruihui Building, Matian street, Guangming District, Shenzhen, China 9 Floors 518105
- Address (Zhengzhou - MFR): No.7 Building, Jinrong Technology Park, Airport Port Zone, Zhengzhou City, Henan Province, China
- Tel: 0755-89575688
- Website: www.bakon.cn
- Email: postmaster@bakon.cn