Automobile Parts User Manual
300-302 Series  Page 2 of 31 
Manual Print History 
The print history shown below lists the printing dates of all revisions and addenda created for this 
manual. The revision level letter increases alphabetically as the manual undergoes subsequent 
updates. Addenda, which are released between revisions, contain important change information that 
the user should incorporate immediately into the manual. Addenda are numbered sequentially. When a 
new revision is created, all addenda associated with the previous revision of the manual are 
incorporated into the new revision of the manual. Each new revision includes a revised copy of this 
print history page. 
Revision A (Document Number 151-0599) ................................................................. May 1999 
Revision B (Document Number 151-1199) .......................................................... November 1999 
Revision C (Document Number 151-032000) ............................................................ March 2000 
Revision D (Document Number 151-072000) .............................................................. July 2000 
Revision E (Document Number 151-092002) ...................................................... September 2002 
Revision F (Document Number 151-082005) ........................................................... August 2005 
Revision G (Document Number 151-032007) ............................................................ March 2007 
Revision H (Document Number 151-062008) ............................................................. June 2008 
Visit www.teledyne-hi.com for WEEE disposal guidance. 
CAUTION 
This instrument is available with multiple pin-outs. Ensure electrical connections are correct. 
CAUTION 
The Hastings 300 series flow instruments are designed for INDOOR operation only. 
CAUTION 
The Hastings 300 series flow meters are designed for class II installations. 
Hastings Instruments reserves the right to change or modify the design of its equipment without 
any obligation to provide notification of change or intent to change. 










