Forbes Marshall is an ISO 9001 certified company that offers Spiratec Type 30 Indicator. The Spiratec Type 30 Indicator [TEC 30] is a portable battery operated instrument designed to detect the presence of steam leak in a steam trap [when used with a sensor chamber]. The Spiratec Type 30 Indicator [TEC 30] also helps to indicate the condition of steam leak in a steam trap on a LED indicator.