Portable Pressure Calibrator
Pressure Measurement
19
2. The same connections are used for the current source. Select mA-Source or mA
Sim-2W from the configuration display.
3. This selection can only be made in the lower display. Also, in source mode, the
Product generates 0... 24 mA that uses its own internal 24 V supply, whereas in
simulation mode the Product acts as a 2-wire transmitter and an external 24 V supply
is necessary.
4. Push the arrow key to start the output mode and then use the arrow keys to adjust the
mA output. The function keys can also be used to control the output in 25 % steps (4,
8, 12, 16, 20 mA) or 0 % (4 mA) and 100 % (20 mA). See Figure 18.
5. While in the mA output mode, if the loop is broken or the resistance burden is
exceeded, the Product will flash "OL".
V mA
SWITCH TEST
COM
24 V DC
30 V MAX
LOOP
ZERO PUMP
V mA
SWITCH TEST
COM
24 V DC
30 V MAX
LOOP
ZERO PUMP
V mA
SWITCH TEST
COM
24 V DC
30 V MAX
LOOP
ZERO PUMP
V mA
SWITCH TEST
COM
24 V DC
30 V MAX
LOOP
ZERO PUMP
4...20 mA
4...20 mA
4...20 mA
Power
Supply
+
–
+
–
DC 24 V
4...20 mA
UUT
UUT
UUT
UUT
hbb018.eps
Figure 18. Measure and Sourcing Current