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Microduct Sonde MPL9-33 (9 mm, 33 kHz)

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SKU: MPL9-33 Categories: ,
  • Description
  • Additional Information

MPL9-33 is flexible and only 9mm diameter transmitter sonde for tracing microduct and other tube blockages. It is very useful when new cables are to be pushed into old ducts, which already have installed cables or other obstacles. MPL9-33 is intended to be used with the Vesala CL43 Compact Locator and other cable tracers and pipe locators using the 33kHz tracing frequency.

The MPL9-33 construction includes the transmitter unit and battery compartment, which are connected together. The semi-rigid construction helps the device pass tube curves, joints and obstacles easily. This way constructor can validate if ducts are usable for new cables or not. MPL9-33 is intended for ducts having inner diameter of 12mm or more.

Working with MPL9-33

MPL9-33 turns on and starts sending tracing signal when a battery is inserted and the battery compartment is turned to the middle part. The sonde is attached to the tip of a push rod (snake) by its M6 female thread, located at the end of the battery compartment. Alternatively the sonde can be taped to the side of the push rod to reduce risk of damage.

After that the sonde is pushed into the duct. If there is a blockage in the duct, its location can be roughly estimated using the length of the rod and cable & duct maps. After that the exact location of MPL9-33 is traced in the area above ground with a cable tracer receiver. Knowing the exact spot of a blockage considerably saves time and reduces unnecessary digging costs.

There is a blinking red light at the tip of the transmitter indicating transmitter operation. The disposable Lithium battery unit gives energy for approx. 10 hours total usage.

MPL9-33 diameter is 9.0mm and length with mounted battery compartment 137mm.

Transmitter signal
32.768 kHz continuous sinusoidal signal.

This Vesala product is made in Finland.

Basic setup

MPL9-33 Transmitter and battery unit
Batteries 2  pcs. Lithium batteries
Packing Pocket-size plastic protective case
User manual
Comparison table of Vesala duct sondes. Indicated range is typical tracing distance with Vesala CL43 receiver. Maximum range is longer.
Model Diameter Frequency Signal Range In Free Air Range In Cast Iron Duct IP / IK Code Battery Type Battery Life Optional Battery Compartment
MPL6-10 6.4 mm 10 kHz Interrupted 1.2 m 0 m IP67 / IK03 CR425 10 h
MPL6-33 6.4 mm 33 kHz Continuous 2.3 m 0 m IP67 / IK03 CR425 10 h
MPL7-10 7.5 mm 10 kHz Interrupted 3.3 m 0 m IP67 / IK07 CR535 9 h MPL7-M5
MPL7-33 7.5 mm 33 kHz Continuous 5.1 m 0 m IP67 / IK07 CR535 9 h MPL7-M5
MPL9-10 9.0 mm 10 kHz Interrupted 3.5 m 0 m IP67 / IK07 CR535 10 h MPL9-M5
MPL9-33 9.0 mm 33 kHz Continuous 5.7 m 0 m IP67 / IK07 CR535 10 h MPL9-M5
PL18-05 18 mm 512 Hz Continuous 5.3 m 3.5 m IP68 / IK08 LS14250 8 h PL18-FM
PL18-10 18 mm 10 kHz Interrupted 5.0 m 0 m IP68 / IK08 LS14250 40 h PL18-FM
PL18-33 18 mm 33 kHz Continuous 10 m 0 m IP68 / IK08 LS14250 20 h PL18-FM
PL42-05 42 mm 512 Hz Continuous 13 m 8.4 m IP68 / IK08 8 x LR6 5 h
Weight 0.09 kg