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KEY FEATURES DETAILS LITERATURE MANUAL OFFERS VIDEOS
- The 8500 guidance system’s offset locating and depth-reading ability—an exclusive feature—helps determine depth and horizontal offset alongside the beacon.
- The 8500 provides true depth readings on inclines of up to 20 percent, so you can track up the sides of ditches and over uneven terrain.
- Icon- and menu-driven screens are intuitive and easy to navigate; straightforward onscreen graphics reduce training time.
DETAILS, 8500
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- To accommodate your tracking situation, the 8500 system offers three ways to locate a beacon using walkover location mode:
Single-point Location—use to find general beacon location.
Peak Location—use to position tracker over beacon if beacon depth is greater than 30 ft (9 m).
Advanced Location—use to position tracker over beacon if beacon depth is less than 30 ft (9 m).
- For bores requiring less accuracy, operational speed can be improved with the “drill-thru” mode, which allows you to place the tracker at a given point and drill to and beyond it on a calculated path.
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- With 60 roll positions on the clockface, you have access to more detailed information, resulting in a more accurate bore.
- Ultra-low, 1.75-kHz frequency can “see through” signals from nearby objects, such as rebar and overhead power lines.
- Soft-touch hand grips and balanced weight help make the 8500 easy to use over the course of a long day.
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LITERATURE, 8500
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ENGLISH
MANUAL, 8500
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ENGLISH
| 8500 TRACKER
The Ditch Witch 8500 Tracker is a powerful guidance system for equally
powerful drills. With its exceptional accuracy, offset locating and dual
frequency capabilities—it is like nothing else in the world. |
SPECIFICATIONS, 8500
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8500T TRACKER DIMENSIONS
Height
Length
Width
Operating weight
8500T OPERATION
Operating temperature range
Operating modes: 1.75 kHz Beacon and 11.2 kHz Beacon
Radio channels: 7
Radio range
Radio frequency (US): 900 MHz
Radio frequency (International): 2.4 GHz
8500T BATTERIES |
U.S.
6.4 in
13.2 in
35.5 in
8.3 lb
U.S.
-4° F to 122° F
200 ft |
METRIC
163 mm
335 mm
902 mm
3.8 kg
METRIC
-20° C to 50° C
609.6 m
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Type: 6 C-cell alkaline
Battery life (continuous use @ 70° F/21° C): Approximately 10 hours
Battery saver: Unit powers down after 5 minutes if no key is pressed and no beacon communication is detected. This feature can be disabled in a menu item. |
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8500D DISPLAY (MODULE ONLY)
Operating weight
Power input: 6.5V DC to 16V DC @ approximately 150 MA
Interface connectors: USB-B
Data storage: SD card
Radio channels: 7
Radio range
Radio frequency (US): 900 MHz
Radio frequency (International): 2.5 GHz
8500D DISPLAY (MODULE WITH CASE)
Operating weight
Battery type: 6 C-cell alkaline
Battery life: Approximately 20 hours
Interface: USB-B
Antenna: TNC female
850-SERIES BEACONS
Length
Diameter
Weight
Operating frequency: 1.75 kHz and 11.2 kHz
Roll: 60 positions (every 6 degrees)
Battery type
1 CC alkaline power stick
2 C-cell alkaline batteries
1 CC lithium battery
Battery life: alkaline
850B/850BG: 20 hours
850BH/850BGH: 10 hours
850BD/850BGD: 20 hours
850BDH/850BGHD: 10 hours
Depth range
850B/850BG
850BH/850BGH
850BD/850BGD (11.2 kHz)
850BD/850BGD (1.75 kHz)
850BHD/850BGHD (11.2 kHz)
850BHD/850BGHD (1.75 kHz)
Maximum remperature
Maximum fluid pressure
Pitch
850 series: 1% increments up to 100%
850-grade series: 0.1% increments up to 100% |
U.S.
2.5 lb
2000 ft
U.S.
6.5 lb
U.S.
17.6 in
1.5 in
2.2 lb
50 ft
60 ft
50 ft
30 ft
60 ft
40 ft
176° F
60 psi
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METRIC
1.1 kg
609.6 m
METRIC
3 kg
METRIC
447 mm
38 mm
998 g
15.2 m
18.3 m
15.2 m
9.1 m
18.3 m
12.2 m
80° C
4 bar
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Specifications are general and subject to change without notice. If exact measurements are required, equipment should be weighed and measured. Due to selected options, delivered equipment may not necessarily match that shown. *Units are calibrated to these tolerances under ideal test field conditions. Actual operating field conditions may have signal distortions or may contain noise sources which result in depth estimates that are less than specified. |
Jobsite safety cannot be overemphasized. You're working on and around heavy equipment that you need to understand and respect. Below is a "Safety Matters" topic relevant to this Ditch Witch product. For other "Safety Matters" topics, plus safety videos and other important facts about jobsite safety, please visit our Ditch Witch Safe page.
Locating safety. Remember that you can verify locates with Ditch Witch electronic pipe and cable locators, and a sure way to verify the location of buried utilities is to expose the lines with a Ditch Witch vacuum excavator.
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 Safety Matters is intended to promote discussions of safety issues among underground construction professionals. TOPIC #5: TRACKING—HAZARDS A HORIZONTAL DIRECTIONAL DRILL TRACKER MIGHT FACE Potential Hazards- Struck by
- Drawn into
- Buried hazards
Precautions- ALWAYS track drilling progress.
- Do not stand over projected bore path unless drilling has stopped.
- Locate drill head after each joint of pipe.
- Never push broken pipe.
- Never assume drill string will follow a pre-drilled path.
- If crossing a known utility, expose the line and watch crossing both directions.
- When drill head surfaces, use tracker control to disable thrust and rotation.
- Stay away from material being installed. If swivel binds, material can rotate.
- Shut off drill string thrust and rotation when breaking joints at exit pit.
- Never use a pipe wrench to break joints loose or tighten joints.
Information/Facts- Buried utilities can vary in depth throughout their length. For example, a utility may be at 2' depth on each end of a block; but places in between may be at 4' depth.
- A broken drill string being pushed through the earth can create a new bore path.
- If an electric line is struck by a drill string, the ground can become electrified. Under certain circumstances, it can even explode when the strike occurs.
- Rotating drill heads and backreamers can "walk" an exposed drill string sideways.
- If the swivel malfunctions or there is a lack of adequate tension on the swivel, material being installed can rotate.
TALES FROM THE TRENCHHDD vs. MinivanA drill operator was drilling under a residential road and broke a drill pipe. After pulling back and removing the broken pipe, the operator began feeding a new string back in the hole. The operator and tracker assumed that the drill string would follow the original bore path, so they did not track the bore. Unknown to them, the drill head had veered off midway and had come up through a sidewalk and gone all the way through a minivan in a driveway. It tore the door off of the van as it exited. Fortunately, no one was injured. BeaconlessA crew was drilling through a dense forest and broke a fluid miser drill pipe. They dug a pit at the drill head and pulled out the broken string with a backhoe. They decided to push the remaining string approximately 30' to the pit, assuming it would follow the original bore path. Because there was no beacon, they did not know that the broken pipe veered off the original path. The end packed with dirt, allowing fluid pressure to build up in the drill string. When the broken end of the drill string surfaced, the liner in the pipe was forced out of the end of the pipe like a javelin. It pierced the tracker operator in the shoulder, severely injuring him. Wrong ToolA tracker operator was using a large pipe wrench to break joints loose. For some reason, the machine operator rotated the pipe. This caused the pipe wrench to strike the tracker operator. He incurred a fractured jaw, had blood coming from his ears and was taken by helicopter to a local hospital. He subsequently required speech therapy. |
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