Moisture/Density Gauges Available:
These are the commonly used Troxler gauges that we sell, service and calibrate...
- 3430 Basic Moisture/Density Gauge
- 3440 Advanced Moisture/Density Gauge
- 3450 Combination Moisture/Density/Thin Layer Gauge
(This is the most versatile model.)
- 4640B Thin Layer Gauge for Asphalt
specifically designed for thin asphalt layers
Also, there are the newer 'Plus' models. E.g. the Troxler 3440 Plus
On these models Troxler has added a number of features that users have asked for, e.g. a larger display screen, back-lit LCD screen and keypad and other conveniences.
The 3430 (shown left) is the most basic general purpose gauge.
The first two models are the most often used, general purpose machines.
The 3440 is the more highly featured of the two and the most popular in New Zealand.
The main differences between the 3430 and a 3440 are:
- The 3440 can store data to download later into a computer.
- The 3440 has a more sophisticated display.
- There is no depth indicator on a 3430. (This is of little consequence if you are doing mainly backscatter measurements).
The most widely used model in New Zealand.
Thin-Layer Gauge 4640B
The Thin-Layer gauge is particularly designed for thin asphalt layers, and does not need to know the density of underlying material to be able to measure density.
Older and pre-used nuclear gauges:
We sometimes have second-hand Troxler gauges available for sale,
including the older model, 3411b, which comes in 8 inch and 12 inch depth versions.
The 3411b gauges are an old design but still give the basic results of wet density, dry density, moisture content etc. and come with an IANZ endorsed calibration certificate.
Note that the general purpose Moisture/Density gauges
like the 3440 and 3430 are calibrated for soil,
not asphalt. They are accurate on thin layers only if we calibrate the machine for the purpose and the user knows the density of underlying layers.
We can show you how to get the most accurate possible readings from your gauges.
Troxler gauges should last for at least twenty years.
New Zealand regulations require the sources to be retired at thirty years, which effectively means that no gauge can go longer than thirty years. Eventual disposal of sources can be costly and the prices are subject to change.
We supply guages with an Accreditation International (IANZ) calibration which is valid for two years.