FMT-S quantometers combine the performance of the FMT-Lx with the size of the Quanto meter, a unique turbine meter (MID approved for legal use by NMi). The integrated flow regulator reduces the need for straight upstream piping to only 1 x D.

FMT-S turbine meters are designed to perform at the highest level of accuracy. These meters comply with all international standards and are approved for legal measurement even with the smallest installation lengths. The actual flow sensor is a replaceable cartridge with an internal multi-stage flow regulator, allowing the meter to be installed with limited (1 x DN) straight inlet and outlet sections. All these meters are tested and approved through perturbation tests conducted according to international standards.

The cartridge can be pre-calibrated under both low and high-pressure conditions and then replaced on-site. The cartridge is supported within O-rings and isolated from the body, so it is not affected by any forces on the casing.

To reduce transportation costs, optimize corrosion protection, and increase transportation safety, the FMT-S series turbine meters are also available with low-weight aluminum meter bodies. For example, the 12” (DN300) ANSI300 FMT-S weighs less than 45 kg.

The unique FMT-S turbine meter is suitable for legal measurement of all non-corrosive gases such as natural gas, propane, butane, air, nitrogen, hydrogen at low and high operating pressures. Special constructions can be provided for extreme conditions such as high temperatures or corrosive gases. Standard FMT-S bodies come with flanged connections up to 8” (DN 200 mm) ANSI150 or PN10/PN16. Larger sizes or higher pressure ratings up to 24” ANSI600 are available in steel.

The length of the FMT-S is only 1 x DN. For flange ratings up to ANSI300 and PN40, the body is made of aluminium (steel optional). The extremely low weight of these aluminium bodies allows the meter to be easily transported and replaced without special equipment.