Other accessories
Product Description
A note about the communication’s length: Blue Robotics has conducted ranged communications testing and found that 300m is the maximum communications length for the Standard Fathom Tether and 200m is the maximum communications length for the Slim Fathom Tether. We do not manufacture ROV-ready tethers in lengths longer than 300m for Standard and 200m for Slim.
The Fathom Tether is a high quality tether cable designed specifically for ROVs and other subsea applications. It is neutrally buoyant, has 300-350 lb breaking strength, and is embedded with water-blocking fibers to seal any leaks. With diameters of 4mm and 7.6mm, these tethers are slimmer than the vast majority of comparable ROV tethers.
The tether carries one or four unshielded twisted pairs (UTP) of 26AWG wire. These pairs are colored and arranged in the same fashion as a Cat5 networking cable including cross-talk resistance. A pre-installed Binder 770 plug makes it easy to connect to the FXTI and Fathom Spool. A cable penetrator is installed at the other end to interface with the ROV or any of our watertight enclosures.
The slim tether really shines when it comes to its size. Its slim profile makes it ultra low-drag, making it ideal for deep dives, high current dives, and long distance dives where the drag from the tether is really noticeable. The size also makes it incredibly portable and easy to handle. A hundred meter tether weighs just 3 lb (1.4 kg) and can be managed by hand very easily.
Since the slim tether only has two wires, it can only be used for the primary communication of the ROV. There are no spare twisted pairs when using this cable, which means that it is not compatible with applications where you need extra tether pairs.
The core of the cable contains Kevlar strands for strength and Dacron fibers for space filling. Both fibers are impregnated with waterblocking compound to block any leaks caused by nicks or rips in the cable. The high-visibility yellow polyurethane foam jacket resists abrasion and provides neutral buoyancy.
The stiffness of the cable is designed to be flexible enough to give plenty of freedom to your ROV, but stiff enough that it does not become tangled easily.
The capabilities of this tether are meant to provide design flexibility and a wide variety of uses. Pololu carries the 3 position 0.1” (2.54mm) Crimp Connector Housings and male crimp pins that may be used for connecting your own devices to the spare tether terminations.
We also have this cable available by the meter with no terminations at either end.
Specifications
| Parameter | Standard Fathom Tether (4 twisted pair) | Fathom Slim Tether (1 twisted pair) |
|---|---|---|
| Performance | ||
| Maximum Rated Depth (seawater) | 950 m | |
| Design Lifetime¹ | 3 years or 500 cycles to rated depth | |
| Temperature Rating (air) | -25 to 60°C | |
| Temperature Rating (water) | 0 to 40°C | |
| Installed Penetrators and Connectors | ||
| Topside | Binder 770 Plug (6-8mm) | Binder 770 Plug (2.5-4mm) |
| ROV Side | WLP-M10-7.5MM-HC | WLP-M10-4.5MM-HC |
| Twisted Pairs | 0.1" Header Pins, 3 Position | |
| Tools | ||
| Compatible Bulkhead Wrench | BR-100977-010 | |
| Recommended Installation Torque | 3.5 Nm | |
| Physical | ||
| Tether Diameter | 7.6 mm | 4.0 mm |
| Weight | 0.043 kg/m | 0.012 kg/m |
| Outer Jacket | Polyurethane Foam | |
| Buoyancy in Freshwater | Neutral | |
| Buoyancy in Saltwater | Slightly Positive | |
| Wire Gauge | 0.14 mm² / 26 AWG | |
| Working Strength | 35 kgf | |
| Breaking Strength | 155 kgf | |
| Minimum Working Bend Diameter | 75 mm | 25 mm |
| Recommended WLP Thru Hole Diameter | 10.2 mm | |
| Bulkhead Thread | M10 x 1.5 | |
| Bulkhead Thread Length | 20 mm | |
| Bulkhead/Nut Wrench Flats | 16 mm | |
| Overall Assembled Height From Endcap | 25 mm | 23.5 mm |
| Overall Outer Diameter | 18 mm | |
| Bulkhead O-ring Size | AS568-013 Buna-N 70A | |
| Bulkhead/ Plug Material | 7075-T6 Anodized Aluminum | |
| Wetted Materials | Buna-N Rubber Molykote 111 Compound 7075-T6 Anodized Aluminum PUR Foam FKM |
|
| Electrical | ||
| DC Resistance @ 20°C | 0.127 Ω/m | 0.146 Ω / m |
| Insulation Resistance @ 500 VDC | > 1640 MΩ/km | - |
| Voltage Rating | 300 VDC | |
| ¹ Design life was used to inform testing in an accelerated environment, does not reflect warranty period. | ||
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[Shipping Description]
Within two days after receipt of the order (excluding the holidays), the Commissioner will confirm the order with your Union or SMS.
This product is non-DIY goods, 4 floor below the floor fee, 5 floor above each additional 200 yuan, no recovery services.
Delivery area: Taiwan Island, the outer island does not receive a single. Due to special restrictions (mountain, township, town, village), the stairs are too small to move upstairs and other factors, leading to the delivery, the company has the right to ship.
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If you do not return the status of this order, you purchase the goods invoice will receive the goods from seven to ten working days, please pay attention to the receipt box.
[post-purchase considerations]
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If you have any questions after receiving the goods, please contact us within 4 working days from the date of receipt of the goods and return it within seven days from the date of receipt of the goods in order to enjoy the After service.
If you do not return the status of this order, you purchase the goods invoice will receive the goods from seven to ten working days, please pay attention to the receipt box.
If you have any questions after receiving the goods, please contact us within 4 working days from the date of receipt of the goods and return it within seven days from the date of receipt of the goods in order to enjoy the After service.
If you do not return the status of this order, you purchase the goods invoice will receive the goods from seven to ten working days, please pay attention to the receipt box.