Emerson Micro Motion 1700 - Page 93

Safe area frequency output/discrete output load resistance valuesFigure 8-12:
10000
9000
8000
7000
6000
5000
4000
3000
2000
1000
0
5 7 9 11 13 15 17 19 21 23
OPERATING REGION
Supply voltage VDC (Volts)
External pull-up resistor R
load
range (Ohms)
R
max
= (V
supply
– 4)/0.003
Rmin = (Vsupply – 25)/0.006
Min. 100Ω for supply voltage less than 25.6 Volts
25 27 29
I/O wiring for Model 1700 and Model 2700 transmitters with intrinsically safe outputs
Installation Manual 89