• Schonstedt REX [REX-T] Multi-Frequency Pipe & Cable Locator - Transmitter Only

Schonstedt REX [REX-T] Multi-Frequency Pipe & Cable Locator - Transmitter Only

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The Schonstedt REX-R is the receiver part of the Schonstedt REX package and can be bought separately from the package.
The Rex receiver has the ability to operate in an automatic or manual gain mode. In the automatic gain mode, the sensitivity of the receiver is adjusted automatically, based on the strength of the detected signal, to produce a relatively constant and strong signal strength indication. In the manual gain mode, the user can adjust the sensitivity up or down to suit different locating scenarios.

The The Schonstedt REX-T is the transmitter part of the Schonstedt REX package and can be bought separately from the package. 

The Rex transmitter delivers power to the "load" that it is connected to. In the conductive mode, the load is the circuit formed by the cable or pipe being traced, the soil return, and the ground stake. In the inductive clamp and inductive modes, the loads are the clamp and the antenna, respectively. The inductive clamp and inductive modes require the maximum power that the transmitter can deliver. Therefore, the transmitter automatically operates at maximum power output, and there is no need for manual power adjustment.

In the conductive mode, the power delivered to the load is highly dependent on the external elements (soil, type of conductor, stake placement, etc.). In some cases, more power is desired to achieve more distance or depth; in other cases, less power is desired to avoid bleeding to nearby conductors. Therefore, while in the conductive mode, the user has the ability to adjust the output power manually, using the front panel controls and visual indicators described further down in this manual.

When operating in the conductive mode, the Rex transmitter displays the amount of current flowing into the utility being traced. This is very useful in determining how good of a circuit has been established by the operator. The circuit can be improved by relocating the ground stake or improving the metal to metal contact of the conductive clips. A low current reading indicates a poor trace conductor, poor soil conductivity, or poor ground stake contact/placement. Higher current readings indicate a better circuit and a better chance at tracing long distances and deep conductors.

If the current reading is low, try improving the connection to see if the current increases (check the cables, clips, and ground stake; wet the ground; clean rust or dirt; etc.). Often, the reason for the low current is the soil itself (sandy or very dry) and/or the conductive quality and integrity of the pipe or cable that is being traced (cast iron pipes, rusted or broken wires, heavy insulation to ground, etc.). If an improved connection cannot be made, there may be a small amount of current still circulating in the circuit. Try increasing the output power manually and/or increase the gain on the receiver. When the transmitter is operating in conductive mode and a new frequency is entered, it performs an automatic measurement of the AC and DC voltages that are present on the line to be traced. If the voltage measured on the line is below 5 volts (DC or AC), then the measurement is transparent to the user and the transmitter proceeds to transmit the desired signal onto the line. If the voltage is above 5 V (DC or AC), an UP ARROW will be shown on the LCD display and the buzzer will be turned on to warn the user of the presence of voltage on the line. The transmitter will continue to retest for the presence of these voltages until they fall below 5 V, in which case it will resume normal signal transmission.

To determine the type (AC or DC) and value of the voltage present on the line, and to measure the line impedance, the transmitter can be put into the Measurement mode by simultaneously pressing the Frequency and Output Power controls while in the conductive mode. In the Measurement mode, the transmitter alternatively displays the DC voltage, AC voltage, and Line Impedance on the LCD; it will turn on an UP ARROW if any voltage exceeds 50 V.

To exit the Measurement mode, press the Frequency or Output Power control. The transmitter will go back to the conductive mode.

The Rex Transmitter controls are designed to be intuitive and require a minimum of training for effective use. The transmitter controls are also large for ease of use when wearing gloves.  


  • Operating Frequency: 512 Hz, 33 kHz and 82 kHz
  • Operating Modes: Conductive, Inductive, and Inductive Clamp
  • Max Output Power (Conductive mode @ 1000 Ω load): 512 Hz - 1/2, 1, 2 or 5 W, 33 kHz - 1/2,
      1, 2 or 5 W, 82 kHz - 1/2 or 1
  • Battery Type: Rechargeable NiMH pack (12V)
  • Battery Life: 8 Hours (intermittent usage @ 70° F)
  • Charging: Internal Smart Charger powered by AC/DC power adapter
  • Dimensions: 10”W x 10.25”D x 1.75” H (25.4 cm x 26 cm x 4.5 cm)
  • Weight: 3.5 lbs (1.6 kg)
  • Operating Temperature: -4°F to 140°F (-20°C to 70°C)
  • Backlighting: White LED array
  • Water and Dust Resistance: Rated IP54

What's In The Box:

  • (1) Transmitter
  • (1) Rechargeable NiMH pack (12V)


Instruction manual

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