PULSAR MEASUREMENT 
 
21 
 
Parameter Defaults 
Factory Defaults 
When you first switch the IMP+ on, it will be reading the distance from the 
face of the transducer to the material surface. It will be indicating in P104 
Measurement Units, as shown on the display 
Once you are satisfied with the installation, and the IMP+ is reading what 
you would expect in terms of distance from the face of the transducer to the 
material level, then you can proceed with programming, for the intended 
application. It is sensible to program all the required parameters at the same 
time. The system will be then set-up.  
Note The span is automatically calculated from the empty level, so the empty 
level should be entered first. 
 
   
Important Notice 
When first installing the IMP+, or subsequently moving or using the unit 
on a new application, before proceeding to program the unit for its 
intended application it is recommended that you ensure that all 
parameters are at their default values by completing a Factory Defaults 
P930, as described in Chapter 5 Parameter Guide. 
In some applications, it is simplest to empty the vessel, take a 
reading from the Imp for distance and then setup the empty level to 
this figure.