Hach Sigma 950, Инструкция по эксплуатации инструмента

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23
Controller Installation
4.5 Interface Connector Descriptions
Note: All interface receptacles are covered with push-on caps. These caps are designed to protect
the connector pins from dirt and moisture and should be attached to any receptacle not in use.
The interface connector ports are located on the left side of the flow meter case. The 950
Flow Meter comes standard with three interface ports.
• 12 V dc (Power Input)
• RS232 (Serial Communications Port)—(See section 8.1 on page 57 for connection
and programming details).
• Sampler (Automatic Liquid Sampler Control)
In addition, the flow meter can be connected to a wide variety of optional peripheral
devices:
One or a combination of up to three sensors can be connected to the 950 Flow Meter,
depending on the system configuration.
4.6 12 V dc Connections
This connection supplies power to the flow meter. Power sources include a battery
(Ni-Cad or Lead Acid), an ac power pack, or an external source such as a deep-cycle
marine battery or vehicle cigarette lighter connection. Refer to
Batteries and Chargers on
page 125 for more information.
Although the 950 Flow Meter will operate on any attached 12 V dc power supply, the
instrument will assume it is battery operated if it detects a less than 14.2 V dc input and
will assume it is operating on an ac power converter if it detects a greater than 14.2 V dc
input
.
• Rain Gauge ( section 7.1 on page 49 ) • Modem ( section 8.2.1 on page 59 )
• pH ( section 7.2 on page 50 ) • Analog Inputs ( section 8.3.2 on page 67 )
• ORP ( section 7.3 on page 51 ) • Alarm Relays ( section 8.4.1 on page 68 )
• Dissolved Oxygen ( section 7.4 on page 52 ) • 4–20 mA Current Loop( section 8.3.1 on page 64 )
• Conductivity ( section 7.5 on page 54 )
• Downlook Ultrasonic Depth Sensor ( section 6.1 on page 33 )
• In-Pipe Zero Deadband Ultrasonic Depth Sensor ( section 6.2
on page 36 )
• Submerged Area/Velocity Sensor ( section 6.3 on page 38 )
• Low Profile Velocity Only Sensor ( section 6.4 on page 40 )
• Submerged Depth Only Sensor ( section 6.5 on page 41 )
• Bubbler Depth or Bubbler Area/Velocity Sensor ( section 6.6
on page 44 )
Table 2 12 V dc Connector Pin Assignments
Pin Signal Description
A Ground
B 12 to 17 V dc, unregulated