Vaisala DPT146 - Manual (Page 18)

User's Guide _______________________________________________________________________
16 ___________________________________________________________________ M211372EN-D
Loop-Powered Display (Optional)
DPT146 with 4 ... 20 mA current output can be connected to a loop-
powered external LED display (type Nokeval 301, Vaisala order code
226476). The display provides a reading of one output parameter. The
display is powered by the current signal, so there is no need for an
external power supply.
The display is delivered at its default settings. Configure the display
functions and scaling according to the documentation delivered with the
display.
1102-053
Figure 5 Nokeval 301 Loop-Powered Display
NOTE The loop resistance of the display must be included in the loop resistance
calculation for the complete current loop. For the loop resistance of the
display, refer to the manufacturer’s documentation.
Sampling Accessories (Optional)
DPT146 is compatible with various sampling accessories. For more
information on performing sampling, and a description of the accessories,
see section Sampling from a Process on page 25.
For the order codes of the sampling accessories, refer to section Spare
Parts and Accessories on page 64.