Setra-system Model 550 Manual do Utilizador descarregar pdf (Página 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

1 2 3 4 5 6 7 8 9

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Setra-system Model 550 Manual do Utilizador Página 6