Manual

DESCRIPTION OF HART INTERFACE 7
29
SMARTSENS ORP 1590
www.krohne.com11/2013 - 4002547102 - MA SMARTSENS ORP 1590 R02 en
7.3.1 Point-to-Point connection - analogue / digital mode
Point-to-Point connection between the sensor and the HART
®
Master.
The current output of the device is passive.
Figure 7-1: Point- to-Point connection
1 Primary master with e.g. PACTware
TM
FDT/DTM
2 FSK modem
3 HART
®
signal
4 SD 200 W/R or SMARTMAC 200 W (optional)
5 Sensor
6 Secondary master with HART
®
DD
7 Power supply for devices (slaves) with passive current output
8 Load ≥ 250 Ω (Ohm)
.book Page 29 Wednesday, October 30, 2013 11:26 AM