D-2 Inc.

Application Notes

App Note 07-005 - Process and Personal Safety

App Note 07-004 - Safe Truck Loading

App Note 06-003 - Stability

High Flow Insertion Depth  

In several instances customers have reported erratic readings when installed in “high” flow rate lines.  Typically this is due to vortex air pocket shedding from structures up stream of the JF-1 sensor; however, it may have also been the result of flow separation inside the JF-1 sensor assembly. D-2 defines high flow product lines as lines in which the velocity of product exceeds 1.5M/sec (5 ft/sec).  Velocity can be determine by dividing the cross sectional area of your pipe ((I.D./2)^2* 3.14 dived into your product flow rate (in equivalent units of measure).

For locations meeting the qualifications for high flow rates a slightly different installation location is recommended. Click on the above manuals link to find more details.

JF -1A Sensor Mounting Adaptors

The JF-1 sensor has a 0.910” maximum diameter.  The D-2 supplied sensor mount has a 1” NPT fitting, couple with a 0.980” bore hole.  This allows the sensor to clear through a “full port” 1” ball valve.

 Note, that the supplied JF-1A Sensor mount with 1” NPT fitting with a 0.980” through hole has a 0.1” wall thickness at the minor diameter of the NPT thread.  The user must check local piping requirements to see if minimum wall thickness has been maintained when using this mount.

 D-2 also offers optional mounts with larger NPT threads and Standard ANSI 150 flange mounts as options to its standard mount if your specific site requirements need a different adaptor.  Please consult the factory prior to order.

 Attached is our standard 1” NPT mount drawing (B440-027REV1), and an optional 2"ANSI 150 flange mount drawing (C441-084R1).