CD52 Bandit Non-Intrusive Pig Signaler with ATEX and IECEx Certification

II 2G Ex d mb IIB T5 Gb

The CD52 Bandit is a non-intrusive pig signaler which uses either permanent magnets or active transmitters mounted onto the pig to detect passage from 0.022 to 45.73 mph (0.01m/s to 20 m/s).  With thousands of systems sold around the world over the past 15 years, the CD52 pig signaler has developed a strong reputation in the industry for its reliability and durability in even the harshest environments.

A relay closure and 4 – 20mA outputs allow the Bandit to be easily interfaced to a wide variety of systems and devices including SCADA, PLC’s, lights, horns, etc.

Features include:

  • Completely non-intrusive to the pipeline
  • Designed for direct burial permanent installation
  • Armored flex cable option available
  • Every unit is dual rated for ATEX and IECEx for hazardous location
  • Bi-directional pig detection
  • Detection of both transmitter and permanent magnet equipped pipeline pigs
  • Automatic retention of the 10 most recent pig passage times and dates
  • 4 – 20mA and dry contact relay closure outputs signal pig passages
  • Powered for 6-18 months on batteries (depending on battery selection) or permanently with 24VDC
  • Easily bands to pipelines from 2″ to 60″
  • Works with wall thicknesses of up to 1.5 inches [38mm]

The ATEX / IECEx version of the CD52 Bandit allows simple and reliable non-intrusive detection of pig passages anywhere within your pipeline network.  Simply strap the CD52 onto a pipeline and it immediately begins scanning for both transmitter and permanent magnet equipped pig passages.

When pig passages occur their times and dates are displayed to the operator along with a flashing “Recent Passage” message.  If multiple pig passages have occurred, one can simply scroll back through the Bandit’s passage memory and retrieve the time and date of any one of the last 10 passages.

When pig passages occur, in addition to visual indications the CD52 Bandit initiates a dry contact relay closure and can optionally change the state of an industry-standard 4-20mA loop.

Using CDI’s proprietary LineStat satellite notification service the CD52 pig signaler can notify operators of pig passages to their email inbox or smartphone any time day or night.

The optional 316 stainless steel sunshade (pictured above and in the gallery below), is a recommended option to increase heat shedding in deserts and other areas with high levels of direct sunlight. The overall temperature inside the explosion-proof housing is lowered which in turn prolongs the life of the electronics (and batteries if used). 316 stainless steel construction of the sunshade guarantees long life in the harsh pipeline environment.

Detection Type:

Non-Intrusive, Magnetic

Devices Detected:

CD52 Pig-Mounted Trip Magnets

TRAXALL and CD42 Transmitters

Detection Direction:


Passage Visual Indicator:

LCD flashes for one hour after passage

LCD holds steady for next 11 hours

Auto-Resets (clears itself) at 12 hours

Passage Indication Outputs:

Isolated Dry Contact Closure (Relay) and

4 – 20mA Outputs

Detection Speed:

0.01 meter/sec to 20 meter/sec

Battery Options and
Rated Temp. Ranges:





D-Cells (non-rechargeable, -20°C to +53°C)

D-Cell (non-rechargeble, -40°C to +70°C)
D-Cells (rechargeable, -20°C to +64°C)

Custom Pack (rechargeable, -40°C to +70°C)

External Power Option and
Rated Temp. Range:

24VDC: Line-In (-50°C to +80°C)

Power Requirements:

Base System:

Heater Option:

RIS Option:

0.67 Watts

0.67 Watts (12 Watts Intermittent)

0.67 Watts (1.0 Watts Intermittent)


• CDI recommends Heater Modules when systems are installed in locations which may experience temperatures below -30°C.

• Heat Risers are required when Product Temperature is greater than 80°C to avoid possible damage to antennas.
• LineStat satellite notification system operational temperature range is -40°C to 80°C.


Powder Coated Copper-Free Aluminum


Tempered Glass

System Certifications:

ATEX: II 2G Ex d mb IIB T5 Gb (Certificate)

IECEx: Ex d mb IIB T5 Gb (Certificate)

Line Sizes:

6 inch to 60 inch [152mm to 1524mm]

Pipe Wall Thickness:

Up to 1.5″ [38.1mm]
For wall thickness greater than 1″ please consult CDI for optimum deployment options.

Pipe Mounting Assembly:

Aluminum (316 Stainless Steel optional)

Banding and Buckles:

201 Stainless Steel (316 Stainless Steel optional)

Contact Closure:

Electrically Isolated
Double Pole – Double Throw.
Closed to indicate a pig passage, opened after 15 seconds
(relay dwell time may be customized at time of order)

Contact Closure Current Capacity:

2 Amps at 30 Volts DC

Total Passage Count:

10 (First In First Out)

Stored Passage Information:

Time and Date of passages. Information is stored through loss of power.

System Design Life:

30 years

Storage Life:

30 years

CDI manufactures a family of small permanent magnets that are designed specifically for use with the CD52 Bandit.  These magnets are durable epoxy encapsulated cylinders with outer jackets and mounting studs; when mounted to or placed inside virtually any type of pipeline pig it can then be tracked by the CD52 throughout a pipeline network.  Since these magnets do not require batteries or have any active components, their usable life is outstanding.

Although several options are available for the CD52 Bandit that allow customization, there are often special uses that require something new.  If you have a special requirement for this equipment give CDI a call; special orders are commonplace for this equipment.