

Les sondes à champ lointain comprennent un préamplificateur de 32 dB. Ces sondes offrent une bonne résistance à l'usure et un boîtier épais, ainsi qu'une réponse différentielle et des rapports signal sur bruit améliorés. Ces sondes sont conçues pour détecter les irrégularités, comme des piqûres, la corrosion et l'érosion dans les tubes ferromagnétiques. Ces sondes sont disponibles avec excitateur unique, émetteur-récepteur séparés et double excitateur.


Probe diameters ranging from 9 mm (0.35 in.) to 26 mm (1.02 in.) are built with a protective stainless steel casing and are available in increments of 1 mm. Larger probe diameters from 22.0 mm (0.866 in.) to 50.0 mm (1.968 in.) are available in increments of 2 mm.
Probes with a diameter greater than 28.0 mm (1.100 in.) have a lightweight design with the probe body made of plastic. This design also includes stainless steel wear rings on each end and a sturdy probe cable to endure multiple probe pulls. Coils are potted (in black on picture) for maximum protection.
The most current probe central frequency is 300 (300 Hz) and it ranges from 100 Hz to 1 kHz. Other frequency ranges exist:
Probe cable material is manufactured in nylon (N) only.
Cable lengths are in meters: 20 m (65 ft) is the most common.
Also available in 30 m (100 ft) length.


Probe diameters ranging from 9 mm (0.35 in.) to 26 mm (1.02 in.) are built with a protective stainless steel casing and are available in increments of 1 mm. Larger probe diameters from 22.0 mm (0.866 in.) to 50.0 mm (1.968 in.) are available in increments of 2 mm.
Probes with a diameter greater than 28.0 mm (1.100 in.) have a lightweight design with the probe body made of plastic. This design also includes stainless steel wear rings on each end and a sturdy probe cable to endure multiple probe pulls. Coils are potted (in black on picture) for maximum protection.
The most current probe central frequency is 300 (300 Hz) and it ranges from 100 Hz to 1 kHz. Other frequency ranges exist:
Probe cable material is manufactured in nylon (N) only.
Cable lengths are in meters: 20 m (65 ft) is the most common.
Also available in 30 m (100 ft) length.


Probe diameters ranging from 9 mm (0.35 in.) to 26 mm (1.02 in.) are built with a protective stainless steel casing and are available in increments of 1 mm. Larger probe diameters from 22.0 mm (0.866 in.) to 50.0 mm (1.968 in.) are available in increments of 2 mm.
Probes with a diameter greater than 28.0 mm (1.100 in.) have a lightweight design with the probe body made of plastic. This design also includes stainless steel wear rings on each end, and a sturdy probe cable to endure multiple probe pulls. Coils are potted (in black on picture) for maximum protection.
The most current probe central frequency is 300 (300 Hz) and it ranges from 100 Hz to 1 kHz. Other frequency ranges exist:
Probe cable material is manufactured in nylon (N) only.
Cable lengths are in meters: 20 m (65 ft) is the most common.
Also available in 30 m (100 ft) length.

Standard probe diameters are available from 28.0 mm (1.10 in.) to 65.0 mm (2.56 in.). The part number shows the diameter in tenths of mm (1/10 mm) so 45.0 mm = "450." Standard available diameters are listed in the chart below:
| Probe diameter (catalog) | Diameter value |
| 280 | 28.0 mm (1.10 in.) |
| 340 | 34.0 mm (1.34 in.) |
| 370 | 37.0 mm (1.46 in.) |
| 450 | 45.0 mm (1.77 in.) |
| 550 | 55.0 mm (2.17 in.) |
| 650 | 65.0 mm (2.56 in.) |
The most current probe central frequency is 300 (300 Hz) and it ranges from 100 Hz to 1 kHz. Another frequency range exists:
Probe cable material is manufactured in nylon (N) only.
Cable lengths are in meters: 20 m (65 ft) is the most common.
Also available in 30 m (100 ft) length.
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