Calibrated Measures & Volumetric Provers.
Built to NIST Handbook 105-3 Standards, OIML R-120 and API Manual of Petroleum Measurement Chapter 4.
Calibration by Standards Traceable to National Institute of Standards and Technology
Graduated Neck with scale that is sealed.
A butterfly valve is standard with the drain at the center point. This is the most versatile unit for use in the field whether emptying into tank, using a pump or gravity discharge. A ball valve is optional. It is used mostly in laboratory applications or where special application exists. The drain would then proceed at a 7-degree decline with the ball valve near the perimeter of the prover
Reinforcing bands to prevent distortion of prover when full of liquid and when being transported
Two spirit levels with seals are used as level indicators for provers more than 18” diameter, otherwise a circular bull- eye level is installed.
Two Lifting Loops are attached to top band of prover
Standard capacities are available from 5 Gallon/20 Liter to 1500 Gallon / 5000 Liter.
All Stainless-Steel Provers
Steel or Aluminum skid
Three Bolt down – Adjustable Crank Legs to level prover
Stainless Steel hinged locking cover for top of neck
Another cover is extended to protect the Gauge Glass from accidental breakage and can be secured with a lock for safety.
Sight flow indicator for ob- serving fluid flow down- stream of the shut-off valve.
Frequently asked questions on Calibration cans:
1. Is the EHAD calibration can pre-Calibrated?
YES, the EHAD Calibration can come with a factory calibration certification.
2. Can the EHAD Calibration Can, be Certified for the use of a Calibration officer under SANAS Law?
YES the EHAD calibration can be certified by a Metrology laboratory (SANAS
APPROVED) and registered in the Calibration officer company name or user’s name.
This is done at an additional cost.
3. Can I purchase a spare glass for the measuring cans from EHAD?
Yes, EHAD holds stock of measuring can Glass due to any breakages or accidents.