PN25080
Introduction 1 - 1
TRIO-WIRL INSTRUCTION MANUAL
CHAPTER 1 Introduction
1.1 Description
The ABB Inc. TRIO-WIRL family of flowmeters consists
of the TRIO-WIRL V vortex flowmeter and the
TRIO-WIRL S swirlmeter. The TRIO-WIRL V is avail-
able in two models in either flanged or wafer styles. A
compact or integral Model VT4000 and a remote Model
VR4000. Similarly, the TRIO-WIRL S is available in
ST4000 and SR4000 models but only in flanged style.
The VT4000 Vortex and ST4000 Swirlmeters are sup-
plied with an integrally mounted microprocessor-based
signal converter using state-of-the-art Digital Signal
Processor (DSP) technology for superior flow and
vibration noise immunity. This combination of flowme-
ter and electronics allows maximum flexibility for
on-site configuration and maintenance. Database inter-
rogations and changes at the flowmeter may be per-
formed using the three pushbuttons or by activating
three magnetic switches using a magnetic "stick". The
two line, 16 character LCD display permits continuous
monitoring of the flow rate or other flow parameters.
The flowmeters are suitable for service with gas and
liquid processes. The meters’ extended temperature
range permits accurate metering of saturated and
superheated steam.
The meter body, sensor and process connections are
made of 316L stainless steel or Hastalloy C. Because
the meter has no moving parts, routine maintenance or
recalibration is not required.
The TRIO-WIRL model and body style variations are
shown in the illustrations below.
Compact or Integral Design: Converter mounted directly on the flowmeter primary
Vortex Flowmeter
TRIO-WIRL VT
Wafer Design
Vortex Flowmeter
TRIO-WIRL VT
Flanged Design
Swirl Flowmeter
TRIO-WIRL ST
Flanged Design
