The Smith Meter Magnetic Torque Coupler (MTC) replaces the packing gland on existing or new Smith Meter double-case positive displacement meters. Two permanent-magnet assemblies rotate 1:1 on a common axis, separated by a pressure barrier with static O-ring seals, so torque passes from the meter rotor to the external registration devices with no rotating contact and no dynamic seal. This eliminates packing-gland leaks, VOC emissions and maintenance while maintaining custody-transfer accuracy, and lower rotational drag helps smaller meters at low flow rates. Retrofit kits include the MTC with adapter, spacer, O-rings and fasteners.
Key specifications
Function: Magnetic drive replacing the packing gland on Smith Meter double-case PD meters
Compatibility: Field retrofit for C2 and F4 through M16 meters; new C2-M16 meters in S3-S7 pressure classes
Not compatible: E3 or E4 meters, or S1 pressure class meters with cartridge-style packing glands
Operating temperature: -50 to +65°C / -58 to +150°F
Maximum working pressure: 1,480 psi
Construction: Stainless steel and aluminum; high-strength permanent magnets; oversized double-row ball bearings
Stack-ups: Supports all mechanical and electronic stack-up options, meter sizes and gear ratios
How to specify / order
Meter model and size (C2, F4, G6, H8, J10, K12, M16)
Meter pressure class (S1-S7) and year of manufacture
Meter serial number
Existing stack-up (register, pulser, gearing)
Retrofit kit or individual MTC
Pricing and lead time are quoted per configuration. Send the model, application details, product, flow range, and pressure/temperature to Flow Measurement Services for a quote. Specifications summarized from Guidant Measurement literature (Magnetic Torque Coupler Specifications); confirm current data with the factory before ordering.
Smith Meter (formerly FMC Technologies / TechnipFMC Measurement Solutions), now manufactured by Guidant. Flow Measurement Services supplies and services Smith Meter equipment.