Features of the SDM (2)

Posted on Monday, 3 August 2020 at 13:36

Two weeks ago, we have shared our first blog about the features of the non-nuclear Slurry Density Meter (SDM). In that blog you can read about the differences in safety, health and environment between nuclear gauges and the SDM. In this blog, we will describe the calibration, safety procedures, licenses and disposal costs.

No difficult calibration needed

The SDM is already calibrated for water in the factory, therefore companies usually only have to do a one-point calibration for the high density (slurry calibration) when receiving the density meter. The ultrasonic measuring principle has a linear curve. This means that every density calculation in the range between the zero-point (water) and the high density (slurry) is correct, even including density values which are out of this range.

Slurry Density Meter (SDM)

No safety officer/procedures

Due to the radioactive materials (RAM) which are used for nuclear devices, special radiation safety programs are restricted and safety principles like ALARA (As Low As Reasonably Achievable) have to be followed.

With a nuclear density gauge, companies need special RSO’s (Radiation Safety Officers) for installing and removing the source. The RSO has to be always on-site for specific licenses. The company needs to create a safety zone where the source can only be serviced by authorized personnel. The safety program involves a lot of costs for maintenance, administration and training among other things.

With the non-nuclear SDM companies do not need a safety officer and do not have to comply with all kinds of procedures. It is an easy 24/7 operation which can be done by all employees.

No special licenses needed

Radioactive materials (RAM) can only be delivered to end users that have obtained a license to possess RAM.
Companies do not need any licenses at all by using the non-nuclear SDM. The density meter is easy to purchase and can be shipped to a plant without any delay.

No disposal and service costs

When companies want to dispose the SDM, it is easy to do because it is just an electrical device. With a nuclear device, companies need to return the product to the country of origin. There are high costs for transportation, because special shipment is required to prevent safety problems. Also, the casing for radiation protection is usually very heavy, which results in a weight up to 500 kilos (depending on the intensity of the radioactive materials) and higher costs for transportation as well.

Also, maintenance can be done very easily, the SDM is easy to repair because there are no special parts. Companies can easily order spare parts or send the device back to Rhosonics for repair.

Nuclear vs. ultrasonic SDM

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Tags: SDM Density Meter, Non-nuclear, Non Nuclear Density Meter, Densímetro não radioativo para polpa, Densimetro no nuclear para pulpa