Description
Not available on P/N PK25 meter.
All dry gas-totaling meters can be equipped with a bimetallic element that will automatically correct for changes in gas temperature and convert line volumes to the common base temperature of 60 ºF.
The fundamental difference in a temperature-compensated meter is the tangent. It features twin bi-metallic elements as the active or compensating members. The tangent is mounted in such a way that temperature variations, causing expansion or contraction of the bimetallic element, alter the volume of the meter. This automatically causes the meter to speed up or slow down as required and does not affect valve timing.
A temperature compensated meter can be outwardly identified by a difference in the manufacturer’s badge color along with a “TC” notation on both the badge and the meter index. Standard meters have blue badges. TC meters have red manufacture’s badges.
The typical temperature compensation performance is within an accuracy band of ±2% over a flowing gas temperature range of 20ºF to +120ºF.