VorTek SonoPro Professional S36 Series, Инструкция по эксплуатации

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Series S36 Instruction Manual Chapter 2 Installation
800120 2-24
AC units only
Meter Provided DC
Power
R
L
> 250 Ohm
24 VDC
24 VDC
For HART
communications
the signal loop
must have a
minimum of 250
ohms load
resistance.
mA Meter
Figure 2-30. Iso. 4-20 mA Output Using Meter Provided Power Supply
Pulse Output Connections
The pulse output is used for a remote counter of the flow total. When the pre-
set volume or mass (defined in the totalizer settings, see page 3-9) has passed
the meter, the output provides a 50 millisecond square pulse.
The pulse output requires a separate 5 to 36 VDC power supply. The pulse
output optical relay is a normally-open single-pole relay. The relay can con-
duct a current up to 40 mA. It is isolated from the meter electronics and
power supply. Additionally, the relay has no polarity. Safely connect the in-
put wires (and resistor) to either terminal.
Figure 2-31. Isolated Pulse Output Using External Power Supply
+
24 VDC Out
- 24 VDC Out
AC units only
Meter provided DC Power
+24 VDC
Figure 2-32. Isolated Pulse Output Using Meter Provided Power Supply