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Schonstedt MAC 51-B Magnetic Pipe, Cable and Fault Locator

(Download Manual)











Overview:

The MAC-51Bx is the most cost-effective, all-purpose locating system on the market. It consists of a magnetic locator, similar to the most popular GA-52Cx model, and a null-over-target pipe and cable locator capable of locating on two frequencies: 571Hz and 82.5kHz.


In the LO and HI modes, the receivers audio signal provides a sharp null when its tip is directly over the target. In the MAG mode (no transmitter required) the audio signal peaks when the receiver's tip is over the target. You can trace the 571 Hz LF signal conductively applied to any continuous metal conductor up to 4000 feet.


The receiver's on-the-fly mode-changing feature lets you locate a complete break using the LO mode, and then continue on to trace beyond the break in the HI mode, or trace a metal pipe joined with non-conductive gaskets.


The MAC-51Bx by simultaneously transmitting 82.5 kHz (HF) and 571 Hz (LF) signals lets you select and compare received audio signals from both frequencies along with magnetic information without having to return to the transmitter.


Transmitter Inductive Mode (HF only)

Induction is achieved by placing the transmitter over the target cable/pipe or by using the optional Inductive Signal Clamp. It's the easiest and quickest way to applying a trace signal that is strong enough for tracing most lines. The trace signal generates an alternating magnetic field around the cable which induces a signal into the receiver's cable sensor. A sharp null in the audio signal between the two peaks occurs when the receiver's tip is directly over the cable.


Transmitter Conductive Mode

If an exposed section of a target gas or water pipe is accessible, conductive coupling is the most reliable method for applying the trace signal. This mode has to be used to apply both HF and LF frequencies so that you can use all three features on-the-fly. Providing a good electrical contact between the clip and the conductive portion of the target line by removing rust or paint before attaching the clip is very important.


Magnetic Locating Mode

Only the MAC-51Bx receiver is required when operating in the magnetic mode. Just set the Mode switch to MAG, the Gain control to mid-range, and you're ready to locate underground ferrous pipes, water meters, water valves, and property markers - or anything that has a magnetic field including the 50/60Hz electro-magnetic field generated by energized power lines.


Features:


Specifications:

Receiver

Operating Voltage Battery Life 9 V (2 alkaline or 2 lithium batteries) 60hrs, alkaline (on & off usage @ 70°F) 120 hrs, lithium (on & off usage @ 70°F) Audio Output Approx. 40 Hz idling tone from speaker Frequency of pulsing tone (increases or decreases) with signal intensity Weight Operating Temp. Overall Length Waterproof Length Nominal Sensor Spacing 2.64 lb. (1.20 kg.) -13°F to 140°F (-25°C to 60°C) 42.3 in. (107.4 cm.) 34.5 in. (87.6 cm.) 20 in. (50.8 cm.)

Transmitter

Operating Voltage Battery Life RF Output 12 V (8 alkaline C-Cell batteries) 60 hours (on & off usage @ 70°F) 82.5 kHz modulated at 382 Hz, pulsed at 4.4Hz 571 Hz Pulsed at 4.4 Hz Audio Indicator Weight Operating Temp Overall Size 2.58 kHz pulsed at 4.4 Hz Approx. 5.5 lb. (2.5 kg.) -13°F to 140°F (-25°C to 60°C) 43.5 in. x 7 in. x 5 in. (110.5 cm x 17.8 cm. x 12.7 cm.) (Specifications subject to change without notice)


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