4445 S. 74th E. Ave. Tulsa, OK 74145 Phone: 918.627.3188 Fax: 918.627.2676
1415 FM 1960 East Houston, TX 77073 Phone: 281.445.8700 Fax: 281.445.8880
12441 Business Highway 287N Ft. Worth, TX 76179 Phone: 817.230.4249 Fax: 817.350.4537
5116 NW 3rd Street, Oklahoma City, OK 73128 Phone: 405.603.6722 Fax: 405.603.6737
3519 W. Beal City Road, Weidman, MI 48893 Phone: 989.441.1500 Fax: 989.441.1505
9745 E. Hampden Ave., Suite 250 Denver, CO 80231 Phone: 720.833.7032 Fax: 303.344.1525
101 Alexander Avenue Pompton Plains, NJ 07444 Phone: 973.616.4501 Fax: 973.616.4451
7 West End Way Norwell, MA 02061 Phone: 781.261.9688 Fax: 781.261.9679
3180 Industry Drive - Unit "C" North Charleston, SC 29418 Phone: 843.628.1342 Fax: 866.594.3233
3216 Wetmore Ave., Suite 207 Everett, WA 98201 Phone: 425.903.4850 Fax: N/A
206 Eleanor Ct NW, South Prairie, WA 98385 Phone: 425.903.4850 Fax: N/A
6711 NE 58th Ave Vancouver, WA 98661 Phone: 360.694.6242 Fax: 360.737.3766
17902 Georgetown Lane Huntington Beach, CA 92647 Phone: 714.963.6202 Fax: 714.963.6360
14538-121A Avenue Edmonton, AB T5L 4L2 Phone: 780.453.6677 Fax: 780.482.4356
1.888.800.MESA
The TW-8800 Multi-Frequency Line Tracer consists of a transmitter, receiver, ground-plate/ground-rod assembly, a carrying case an operator manual. The TW-8800 has been active and passive locating features.
Active locating utilizes both the transmitter and the receiver. By applying a signal with the transmitter, the operator can trace the path of the utility with the receiver. Different utilities respond better to different frequencies, and the TW-8800 has three frequencies, and the TW-8800 has three frequencies the operator can choose from .82 kHz, 8.2 kHz and 820 kHz.
There are three methods of active locating that an operator can use to trace a utility. The conductive method is the most preferred method, since a strong transmitter signal is transmitted through the intended target. The operator can choose any of the three frequencies to trace the utility. The type of utility being traced would be the determining factor as to which frequency to choose. The inductive method is the easiest method to use, but may not yield the best results. When a direct connection is not available, but the operator has good knowledge of where one point of the utility may be, the operator can place the transmitter over the utility making sure that the arrow on top of the transmitter is parallel to the path of the utility. Inductive locating can be done at the 82kHz and the 8.2 kHz frequencies. The third method of active locating involves using the coupling clamp accessory. The coupling never makes a direct connection with the utility, that is, the utility can move freely with the clamp around it. This method can only be used at the 82 kHz frequency.
The passive locating method utilizes only the receiver. This method of locating uses signals that are inherently associated with the utility. The TW-8800 has two modes for passive locating: 50Hz/60Hz (power) and 14 kHz to 30 kHz (radio). The power mode senses the electromagnetic fields on energized electrical lines. The radio mode senses the re-radiated radio waves that are occasionally associated with utilities. Often these signals are weak, so to assist the operator, we added a feature that oscillates the signal, thus allowing the signal to be heard.
The features of the TW-8800 make it a very versatile and practical instrument in today's world of underground locating.
Item #
Item Name
Power
TW-8800-T
TW-8800 Transmitter
N/A
TW-8800-R
TW-8800 Receiver
Turns the receiver on or off
