Emerson Exchange 365

Hello Artyom! The Rosemount 5300 use the bottom of its flange (or thread, if threaded connection) as its reference point. This is thus from the point that the radar start to measure "distance". In the plot, for instance in RadarMaster, you may see an offset in the reference pulse versus the "zero" line - but this is due to the fact that the plot is showing the electrical rather than the calculated distance and to the fact that each probe and seal type are calibrated regarding the offset. This is the simple explanation why the reference pulse will appear with an offest in the plot view. So: Please keep using the bottom of the radar flange (or thread, if threaded connection) as the reference point for the radar. Best regards/Ingemar

In reply to Artyom Krot:

The probe length is the measure between the upper reference point (which is the bottom or the radar flange or the thread) and the end of the probe including the weight (if fitted with weight). BR/Ingemar

In reply to Artyom Krot:

5300 probe length.pdf

Artem,

The probe length on the model code should reflect its physical lenght between reference pont and probe end according to the attached picure (copied from the 5300 product data sheet). Note that you need to key in the actual probe length into the database in order to get the most out of the functionality. If the probe was longer than ordered/stated by model code, you can shorten it - you will find detailed instruction on how to proceed in the 5300 reference manual. BR/Ingemar 

In reply to Ingemar Serneby:

Artem,

One reason why the physical probe length doesn't match the model code on the label might be that the probe doesn't belong to this transmitter head; if you for instance make all the mechanical installations (installing the probes on the tank flanges) with the probe assembly separated from the transmitter head - and make the electrical installation later (then with the transmitter head in place) - it is common that the transmitter head ends up on a probe that was delievered together with another transmitter head. This is not really a problem - as all probes matches all 5300 transmitter heads - but you then need to set the database up accordingly.

BR/Ingemar