Which Products are Involved?
For SME-DRM (DIN rail mount) transmitter. Visit our product page to learn more about the full features.
Visit Rheonics product page: https://rheonics.com/products/
What is the purpose of this article?
To give guidance and good practices when preparing Rheonics sensor cables with a crimp of length 8mm and terminal diameter 1mm. The terminals of the SMET are rated for wires of 0.2 - 1.5 mm2 i.e. AWG 24 - 16.
1. Tools and BoM list
Crimping tools are used to deform materials and create connections. To connect wires together or to other connectors, crimping is commonly used in electrical work.
Precision Micro Wire Cutter
A wire cutter or cable cutter is a tool that cut wires and cables in a safe manner without damaging the insulation or conductors.
A Measure Tape is a tool used to measure length.
- Stripping tool
Wire strippers are portable handheld tools used by workers, especially electricians, to remove the protective coating of electric wires for replacement or repair.
A tool used to cut wires or cables.
A durable, permanent connection can be created by joining conductive metal elements with solder. Soldering machines are essential tools for building, modifying, and repairing electronics.
Hot air gun
Heat guns are devices that emit a jet of compressed air toward a particular point or surface.
1.2. BoM list
Manufacturer Part Number
Vendor Part number
Heat Shrink tube
Correct ferrule size must be selected based on the gauge of the wire, as a standard Rheonics uses ferrule with a pin length of 8mm and diameter of 1mm (cross-section 0.5mm2).
- Solder wire
Solder wires are wires with a low melting point, used to create joints using a soldering iron.
- Heat shrink tube
Heat shrink tubing is a common element in most electrical installations that protects wires from moisture, dust, abrasion, and sharp objects that might otherwise damage them.
Eyelet fittings are used for mounting cable assemblies using screws, pins, rivets, and bolts.
2. Cable Length
Take the cable and cut the required length for your application by measuring with tape. We recommend stripping out the cable sheath at 18 cm (7 inches) from the end as a suitable length to prepare the cables for attachment to SME-DRM.
3. Cable strip
Strip out the sheath with the help of the cutter and a previous cut.
4. Cutting cable shield
Loosen the metal shield from the black cable cover and cut it out.
With the help of the cutter, clean all the remnants from the shield and cable cover.
5. Stripping the wire ends
Stripping the wire at 9mm from the end with the stripping tool.
6. Proper usage of crimpers
Your crimping tool should have a nest for inserting the terminal. After inserting in the correct slot, squeeze the crimp tool firmly and release it to get a long-lasting, tight fuse.
Unused wires should be neither stripped nor crimped. We recommend protectiong the ends with a shrink tube to avoid the ends making any electrical contacts.
We recommend crimping the ferrules on two sides instead of 4 sides as they work better with the terminals on the SME.
Twist the wire and Crimp them (Crimpers) using the Crimping Tool.
Final results after crimping all wires from the sensor cable.
7. Preparing grounding cable
Heat Shrink tube
Hot air gun
Now take the prepared sensor cable and the metal shield and put them together to one side.
- Take a thin cable and strip both ends.
Take the twisted metal shield of the prepared sensor cable and the stripped end of the thin wire and twist them together by adding some flux if necessary.
- Solder the joint obtained in the previous step using the soldering equipment and the solder wire.
- Put a heat shrink and pull it back so it completely covers the solder joint. Apply heat with the air gun.
- Soldering the ground wire in preparation for the eyelet.
8. Hiding shield leftovers
Hot air gun
Pull the shrink tube over the prepared sensor cable to cover the group of wires.
Blow hot air using the hot air gun at the shrink tube when oriented as instructed in the previous step.
Inserting the Heat Shrink tubing before soldering the eyelet.
Soldering the eyelet with the ground wire.
Cover the eyelet with heat shrink and blow it with heat to secure the joint.
After all the steps are complete the final result for the SME-DRM sensor cable is as shown below:
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