5714 pr (پی آر)
following system vendors:
6185
Loop-powered isolator
PRetrans 5100
PRetop 5300
PRetrans 6300 ...
The 2200 series ...
5335
2-wire ... transmitter
PReasy 4114, 4116 and 4131 with display /
programming ... front 4501
5223
Programmable ... f/I-f/f converter
2200 series
4000 ... calculator
2224 Valve controller,
proportional valve control, analogue
2261 ...