43 CFR §3175.43

1. (a)A transducer of a specific make, model, and URL is approved for use in conjunction with differential meters for high-volume or very-high-volume FMPs if it meets the following requirements:
   1. (1)It has been type-tested under § 3175.130;
   2. (2)The documentation required in § 3175.134 has been submitted to the PMT; and
   3. (3)It has been approved by the BLM and placed on the list of type-tested equipment maintained at www.blm.gov.
2. (b)A transducer of a specific make, model, and URL, in use at an FMP before January 17, 2017, is approved for continued use if:
   1. (1)Data supporting the published performance specification of the transducer are submitted to the PMT in lieu of the documentation required in paragraph (a)(2) of this section; and
   2. (2)It has been approved by the BLM and placed on the list of type-tested equipment maintained at www.blm.gov.
3. (c)All transducers are approved for use at very-low- and low-volume FMPs.