Route search complex "Stalker" 75-24 (built-in GPS/GLONASS module, Li-Ion)

The Stalker 75-24 route finder is designed to determine the planned position and depth of communications, places of damage to the insulation of pipelines and cables with further cartographic analysis.

The delivery package for the Stalker 75-24 locator includes a GT-75 generator and a PT-24 receiver with a built-in GPS/GLONASS module

The principles of working with the Stalker complex can be found in educational films:

• working with the GPS module https://youtu.be/wZPIzG8_Tno,
• search for pipeline branch locations "Stalker" 15-24  https://youtu.be/MF0I_xypMfQ
• contactless supply of search signal GT-15 https://youtu.be/aCZo19lgC1E
• search for damage sites  https://youtu.be/Q7ht0PSZkiI
• high precision positioning https://youtu.be/ixbdZwx_-n8

General features of the Stalker 75-24 locator (built-in GPS/GLONASS module, Li-Ion)

• “Compass” function - schematic display of two communications on the receiver display;
• search for the position of transmitting probes and television inspection cameras;
• tracking and coordinating location in a worldwide coordinate system;
• built-in GPS/GLONASS module;
• high-precision positioning (up to 1 cm) together with GPS RTK – PrinCe LT700H tablet;
• the ability to use a smartphone instead of an external GPS/GLONASS module;
• communication with a computer via Bluetooth, memory for 10,000 measurements;
• for gas services, ECP frequencies are separately allocated for operation without a generator;
• the Stalker 75-24 locator will automatically display the depth and current strength (even in passive modes);
• search for communications at a depth of up to 10 m and a distance of up to 10 km from the generator connection point;
• the presence of four operating frequencies and adjustable output power of the GT-75 generator (from 10 to 75 W). This generator is included in the set of Stalker defect detection systems: 75-14, 75-04, 75-02M;
• PT-24 receiver menu in Russian, English and Chinese.

Receiver Stalker PT-24 (built-in GPS/GLONASS module, Li-Ion)

• built-in GPS/GLONASS module
• lightweight design (weight 1.9 kg)
• enlarged bright color display
• increased operating time up to 20 hours from Li-Ion batteries

Continuous display of all necessary parameters:

• “Compass” function with simultaneous schematic display of two communications:

- the first with current flowing from the generator; - the second with flowing industrial frequency current (cables) or ECP (pipes);

• Scales of “maximum” and “minimum”;
• Depths and strength of communication current at all active frequencies;
• Signal polarity - at the point of insulation damage, the sign “+” changes to “-”;
• Function of current direction (from the generator/to the generator), to prevent accidental switching to “foreign” communication;
• Sharp maximum mode.

In the "PROBE" mode, it searches for the position of transmitting probes and television inspection cameras that have an autonomous transmitter during in-line inspection at frequencies of 512 or 32768 Hz (33 kHz)

Recording in the memory of the PT-24 receiver:

• level of signals from magnetic antennas and the “SENSOR” input;
• directions to communication;
• indications of the depth of the communication and the magnitude of the current in it;
• direction of search current;
• relative polarity of the potential difference at the “SENSOR” input;
• phases of the signal at the “ROAD” input;
• operating frequencies;
• local date and time at the time the readings were taken using GPS information;
• coordinates of the location where readings were taken using GPS information.

Technical characteristics of the PT-24 receiver

Active frequencies*, Hz - 273, 526, 1024, 8928, 32768

Passive frequencies, Hz - 50 (POWER), 100, 300, 550, 1450 “RADIO”, “Ether”

Frequencies for working with generators from other manufacturers, Hz - 491, 512, 982, 2000, 2048, 8440, 9828, 10000

Bandwidth for RADIO mode - from 10 kHz to 36 kHz

Bandwidth for “On-Air” mode - from 48 Hz to 10 kHz

Error in reading the route depth, %, no more than - 5

Memory - 10,000 points

Continuous operation time from built-in Li-ion batteries, no less than - 20 hours

Overall dimensions, mm, no more - 700x300x140

Weight, kg, no more - 1.9

Operating temperature range, °C - from -30 to +55

GT-75 generator

• Sinusoidal output signal to eliminate induced interference on equipment;
• Built-in output voltage, current and impedance meter to evaluate the quality of the operating signal;
• High power output for working in difficult conditions;
• Automatic load matching for ease of use;
• Powered by a built-in battery with the ability to connect an external source (12 V, 220 V);
• Waterproof, shockproof housing (IP 44).

Technical characteristics of the GT-75 generator:

Operating frequencies*, Hz - 273, 526, 1024.8928

Output power adjustment range at load from 0.5 to 600 Ohm, W - from 10 to 75

Overall dimensions, mm, no more - 275x250x180

Weight with built-in batteries, kg - 8.5

Operating temperature range, °C - from -30 to +55