Trime T3 Moisture Probes

Moisture Monitoring Instruments

Trime®-T3 Tube access probe

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IMKO was the first manufacturer of TDR measuring techniques to offer a TDR tube access probe especially designed for water content profiling. Fot the first time ever, the rapid, routine and non destructive measurements of water content profiles is possible without the use of hazardous radioactive materials. The tube body consists of a cylindrical PVC-body, which has four spring mounted aluminium plates as TDR wave guides on opposite sides. The measurements are performed within TECANAT plastic access tubes which can be left in the soil. The tubes must be installed prior to to the taking of measurements by using a specially developed drilling set. The maximum available length of probe cable and tubes is 3 m.

The Operating Principle
The TRIME device generates a high frequency pulse (up to 1GHz) which propogates along the metal shells, generating an electromagnetic field around the probe. At the end of the shells, the pulse is reflected back to its source. The resulting transit time (3ps...2ns!) can be measured and enabling determination of the propogation velocity, which is primarily dependent upon the water content.
The volumetric water content is then calculated by the velocity and is shown on the display panel immediately.

Measuring Volume
The effective penetration depth of the probe T3 is about 15 cm, the effective penetration of probe T3C is 10 cm, with the highest sensitivity in the immediate vicinity of the access tube, and decreases exponetially as distance increases. For precise description please forward email to us and we will forward further information.

Technical Specification of Sensor & Tube

The TRIME tube access probe can be connected to version P3-device TRIME-FM and to the Intelligent-Probe-Head
TRIME-IPH

Measuring Range:
Measuring accuracy:

Measuring volume:
Application:
Bulk electrical conductivity:
Pore water electrical conductivity:
Probe length:
Cable length:

T3
0..60% by volume
2% in the range of 0..40%
3% in the range of 40..60%
Large
hetrogeneous soil
0..2dS/m
0..10dS/m
220mm
2.5m coax cable (3.5m on request)
25m with TRIME-IPH option!

T3C
0..70% by volume
2% in the range of 0..40%
3% in the range of 40..70%
small
homogeneous soil, saline soil
0..5dS/m
0..25sD/m
150mm

The T3 Probe is delivered with a calibration for mineral soils. Re-calibration is possible with the programme TRIME Win Cal.

Access tube:
Tube Outer diameter:
Tube inner diameter:
Tube length:

special plastic material TECANAT
44.3
42mm
1m, 2m or 3m

Our philosophy of a commitment to customer satisfaction by providing premium quality products was and still is the driving force behind our success.

Providing working solutions to your data monitoring requirements in harsh, hostile environments.

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Last updated : 09/08/2006