Section 1 Introduction; Instrument Description - Sigma 980 Operating And Maintenance Manual

Section 1

1.1 Instrument Description

Figure 1 980 Flow Meter
Introduction
The 980 Flow Meter is an ultrasonic level detection meter with rugged,
NEMA 4X, IP66 construction. The 980 Flow Meter case has several unique
features, all designed to simplify installation, operation, and maintenance. All
controls are located within easy reach on the front panel behind a clear,
protective front cover.
The 980 Flow Meter has eight wiring holes located along the bottom of the
case. The one 1.38 in. and the seven 0.875 in. conduit holes provide easy
access for all power, sensor, control, and communications wiring.
Connections to the 980 Flow Meter are made in the wiring panel behind the
front cover. The interface connector ports are located on the bottom of the
instrument. The 980 Flow Meter comes standard with a quick-connect RS232
serial communications port.
980 980 980
In addition, the flow meter can connect to a wide variety of optional
peripheral devices:
• 4–20 mA Current Loop
• Up to three 4–20 mA Inputs
• Up to four 4.5 V dc Inputs
• Mechanical Totalizer
• Rain Gauge
• Sampler
• pH Sensor
• Modem
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Introduction