NSF Certification Provides Safe and Accurate Measurement
Like many other industries, water and wastewater companies need reliable methods to measure their fluid
level. Manufacturers that produce level measuring equipment differentiate their products in many ways:
size, features, options, and accuracy. However, because water companies may be dealing with drinking
water, they have responsibilities and regulations that eliminate some equipment from consideration.
One such regulation is established by NSF, a public health and environmental organization that develops
health regulations and certifies products and equipment. NSF conducts extensive auditing and testing of
products, components, and the manufacturing process used in created products. They continue the service
by auditing the same items to ensure that companies continue their safe practices.
NSF has recently verified that the AMETEK PMT
575 submersible level
transmitters meet its NSF/ANSI/CAN 61 classification standards used to
identify products that meet its drinking water leachate requirements,
including the lead percentage. This classification is already required in
most US states and will, more than likely, soon be required in all.br />
The AMETEK PMT 575 submersible level transmitters indicate liquid level
by continuously measuring hydrostatic level pressure via its sensing
element and transmitted by a 4-20 mA signal. This design provides excellent
linearity and repeatability, low hysteresis, and long-term stability.
The 575 is available with a nylon or stainless steel snub nose, ranges
from 0-14 feet through 0-690 feet, and are CSA-rated intrinsically safe.
See the pdf copy of the
application note here.