Our DEF compatible meters can be found in many unique configurations; whatever your application, we have a meter and register to meet your needs. From electronic to mechanical options, to handling flow rates up to 500 GPM, Semler offers it all.  Each of the units has been manufactured to meet the strict standard of ISO 22241. Any of our meters are available to purchase individually or on any of our carts or skids in the DEF-Distributor series. To ensure that the correct amount of DEF is being delivered or transferred, Weights and Measures approved meters are offered to meet the requirements of custody transfer.

Semler Industries has come together with Liquid Controls, Total Control Systems and Tuthill to bring you the best DEF meters for any of your applications.