Alarm Functions; Meter Types; Dual Channel Flow; Dual Path Flow - Siemens SITRANS F Operating Instructions Manual

Section 1
1010PFM-3G

Alarm Functions

The 1010P flowmeters offer several alarms (shown by letter codes on the digital screen and in data-
logger reports). Alarm relays are not standard equipment in the 1010 Portable systems, since they use
significant battery current to sustain fail-safe operation. However, System 1010P provides buffered
logic outputs (3 - 5 Vdc high, 0 - 1 Vdc low) for external device control which can be used as triggers for
external relays, etc.
1.3

METER TYPES

Those familiar with our 990 systems, will appreciate System 1010's many new features; especially its
ability to operate as several different meter types to meet the needs of almost any conceivable portable
application. These features are described in the following paragraphs.

1.3.1 DUAL CHANNEL FLOW

In Dual Channel Flow mode, the meter becomes two entirely independent flowmeters operating simul-
taneously on two different pipes. Each pipe can be of a different size, transporting different liquids. In
addition, either measurement channel can be set to operate as a clamp-on or in-line transit-time flow-
meter, or a clamp-on Reflexor flowmeter.

1.3.2 DUAL PATH FLOW

In Dual-Path mode, both measurement channels operate on the same pipe using transit-time technol-
ogy. Both measurement channels contribute to a single combined average output. The Dual-Path
flowmeter configuration provides the highest possible accuracy, with excellent immunity from flow
profile aberrations.

1.3.3 CH 1+2 OR CH 1-2 (ARITHMETIC) Flow

In an Arithmetic mode, the meter measures the flow of two channels independently, then creates a
"virtual" channel, whose output is either the sum (Ch 1+2) or difference (Ch 1-2) of the two flow rates.
Arithmetic mode supports either clamp-on or in-line transit-time only.

1.3.4 THICKNESS GAUGE

The Thickness Gauge allows you to obtain an accurate wall thickness measurement at a mounting
location. This eliminates any uncertainty about the value of this critical parameter. The measurement
range covers pipe walls from 0.1" (2.5 mm) to 2" (50.8 mm), depending on pipe sonic conductivity and
condition of the inner wall of the pipe.
The Thickness Gauge operation disables all flow measurement. Use the Channel Enable menu cell to
re-establish flow measurement.
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