Varec 2500, Installation And Operation Manual

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2500 Automatic Tank Gauge
4 Installation and Operations Manual
Table 1: Calibration and Volume Measurement
System Integration
A range of analog and digital tank gauge
transmitters is available that mounts directly to
mechanical tank gauges.
Figure 3: 2500 ATG with a 2910 Float & Tape Trans-
mitter
Level measurement data is encoded by the
transmitter and output via industry standard
communications to the control room. Some
transmitters also offer spot temperature
measurement integration that can be used for
inventory control applications. When a tank gauge transmitter is used, communications and
power are required at the gaugehead. Varec transmitters do not require an adaptor flange.
When connecting third-party equipment, a specific adaptor flange, depending on the
transmitter, is often required.
Product Options
English and Metric Configurations
Varec provides the following three measurement and display configurations:
•
English fractional - feet/inches/16ths
•
English decimal - feet/inches/10ths
•
Metric configurations - meters/10ths/100ths
English reading gauges are manufactured with a reversible fractional/decimal dial. For
example, if the customer desires a decimal level display, the dial can be removed, reversed and
reinstalled to show decimal units. All dial/counters reflect product innage. For outage reading
requirements, Varec offers a conversion kit (Part #13-08774) for English units of measure only.
Consult Varec if metric outage is required.
2540 Chapter 11.1 (ANSI/ASTM D1250) for Volume Correction Factors. Refer
also to API 2545.
Manual of Petroleum Measurement Standards, Chapter 3 - Tank Gauging, Section 1B, Standard
Practice for Level Measurement of Liquid Hydrocarbons in Stationary Tanks by Automatic Tank
Gauging.
API Standard Description