Series M Series K
Series K Double Neck Prover
Seraphin Series K Double Neck Provers are made to order only, sizes range from 5 gallons to 1000 gallons. Some are designed especially for the food industry for the purpose of testing Flow Meters others use them on trailers for petroleum terminal calibrations. Series K Provers are made from stainless steel. Two openings at the base of the bottom neck facilitates the placing of the bottom fill and drain. Leveling of the measure is optional since the capacity is between the zero on both the upper and lower gauges and the gauges are the same distance from the vertical axis. If necessary, two levels can be installed for leveling the measure. Another option is the installation of the thermometer wells in the tank.
A drain at the bottom of the lower neck is used for zeroing liquid. The bottom gauge has a valve at both ends to preserve the liquid in the event that the glass tube is broken. The measure is equipped with an overflow trough and drain cock to entrap any liquid that might overflow when filling.
Series M High Accuracy Neck Prover
The "High Accuracy" type neck has at least 1.5% of the prover volume and a smaller diameter to achieve greater neck volume resolution. This Series M Prover has all the outstanding features of the Series J. Due to the greater resolution it is a favorite of laboratory meterologists and petroleum professionals to calibrate other provers, master meters, uni-directional and bi-directional provers. Seraphin® Series M provers come standard with a three piece S/S ball valve. The three piece allows repair to the valve without affecting the calibration. Our Series M provers are sent to a NVLAP facility for calibration to assure NIST traceability with uncertainty values. Other types of calibration are available.