Setra System Model 550 - Manual (Page 6)

To maintain sealing integrity ensure end cap ‘O’ ring is correctly seated, and clean prior to re-fitting.
RANGE SWITCH DETAILS
Switch Position
(Current Mode)
Range
Switch Position
(Voltage Mode)
Range
0 Not Used 8 W
1 Not Used 9 X
2 Not Used A Y
3 Not Used B Z
4 W C Not Used
5 X D Not Used
6 Y E Not Used
7 Z F Not Used
Range
Downranging Scope
(Nominal)
W 110 to 74%
X 78 to 52%
Y 54 to 37%
Z 47 to 32%
LOAD RESISTANCE (4-20mA Transmitter)
The total permissible resistive load in the loop (to include all the cable resistance) can be from 'zero to
50 x (supply volts -8.5) ohms' e.g. with a 12V d.c. supply the permissible load is from zero up to 175
ohms (Figure 1).
Figure 1