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8 Micro Motion 7827 Digital Viscosity Meter
Installation (Short Stem)
From this, it would appear that almost every installation requires a separate in situ calibration – a very
undesirable situation. The problem is resolved by providing standard calibration geometries which
can be used in all pipe work configurations and thereby allow the factory calibration conditions to be
reproduced in the process.
2.3 Standard installations
2.3.1 Overview
To overcome the need for in situ calibration for every installation, three standard installations are
proposed. If an installation conforms to one of these standards, the factory calibration of the 7827
meter is valid, and in-situ calibration unnecessary. Table 2-1summarizes the three installations. For
tank installations, consult Micro Motion.
Table 2-1. Types of standard installations
Installation type Free stream T-piece Flow-through chamber
Description 7827 meter tines are inserted
directly into the main fluid flow.
7827 meter tines are contained
in a side pocket off the main
flow.
7827 meter tines are
contained in a flow-through
chamber in which fluid is
circulated from the main
flow.
Flow rate 0.3 to 0.5 m/s at the 7827 meter. 0.5 to 3 m/s at main pipe wall. 10 to 30 l/min.
Viscosity 0.5 to 12500 cP 0.5 to 100 cP 0.5 to 1000 cP
Temperature
(1)
-50 to 200°C
(-58 to 392°F)
-50 to 200°C
(-58 to 392°F)
-50 to 200°C
(-58 to 392°F)