An automatic temperature compensator shall be of a design intended by the manufacturer for the temperature compensation of home heating oils and approved under the act of May 5, 1921 (P. L. 389, No. 187) (73 P. S. § § 1701—1715).
- (1) The device shall be capable of being deactivated from the automatic temperature computing mechanism so that the attached meter may indicate in terms of the uncompensated volume.
- (2) The device shall be capable of applying a security seal in such a manner that the automatic temperature compensating system cannot be disconnected and that no adjustment can be made to the system once the security seal is in place.
- (3) On the meter that is equipped with an automatic temperature compensator, a clear and conspicuous statement shall appear on the meter to show that the volume delivered has been adjusted to the volume at 60°F.
- (4) On meters equipped with automatic temperature compensators, means shall be provided for inserting for test purposes a thermometer either in the liquid chamber of the meter or in the meter inlet or in the discharge line immediately adjacent to the meter.