Provides a purchase specification to facilitate the manufacture, procurement, installation, and testing of vibration, axial position, and bearing temperature monitoring systems for petroleum, chemical, and gas industryservices. Covers the minimum requirements formonitoring radial shaft vibration, casing vibration, shaft axial position, and bearing temperatures. It outlines a standardized monitoring system and covers requirements for hardware (sensorsand instruments), installation, testing, and arrangement. Standard 678 has been incorporated into this edition of Standard 670.