The Smith Meter Networked MeterBlock (NMB) is an Ethernet-enabled field I/O device that connects turbine and PD meter runs, and other sensors, straight to industrial networks and cloud applications. It streams flow rate and raw measurement data, runs basic logic and closed-loop control, and is reached from any web browser on a PC, tablet or phone. The optional Turbine Meter Diagnostics firmware watches liquid turbine meter behavior and alerts operators to problems in real time.
Key specifications
- Pulse inputs: API MPMS 5.5 / ISO 6551 compliant dual-meter pulse input (A, B, I) to 10 kHz; NMT version adds low-level preamplifier inputs (10x/50x/100x, 0-3 kHz)
- Other I/O: 2 digital inputs, 3 digital outputs (1 A) plus 1 open-drain output, 1 RTD (100 Ω Pt, -120 to 380 °C, ±0.2 °C), 2 passive 4-20 mA inputs
- Communications: Two 10/100BaseTX Ethernet ports (RJ45, 3-port switch); built-in web server; HTTP and MQTT; standards-based encryption
- Power: 9-30 VDC, under 150 mA
- Approvals: UL/cUL Class I Div 2 (module) or Div 1 in the XP housing; ATEX/IECEx Ex nA IIB T6 Gc or Ex d IIB T6 Gb IP66
- Environment: -40 to 158 °F; 5-95% humidity; module 5 oz, in housing about 6.6 lb
- Applications: Pipelines, LACT units, truck, rail and transloading terminals, well pads, asset monitoring and analytics
How to read the model code
Example: NMT-XP-TMD (with instrument housing). Read the code left to right:
- Position 1 (Block type): NMB = Networked MeterBlock; NMT = with low-level signal preamplifier inputs
- Position 2 (Packaging): PM = panel-mount Class I Div 2 (Zone 2) module; XP = explosion-proof Div 1 (Zone 1) / Div 2 aluminum housing with three 3/4" NPT entries
- Position 3 (Application): STD = raw I/O, meter and communications; TMD = STD plus Turbine Meter Diagnostics
- Position 4 (Accessories, XP only): Blank = none; 01 = 1/2" NPT adapter (Genesis PD meter); 02 = 3/4" NPT adapter (PRIME 4 PD meter); 06 = PA-6 turbine transmitter in a larger enclosure with 1" NPT adapter (requires NMB)
- Option: DIN rail mount kit for a single panel-mount block, P/N P8000019076
These are standalone retrofit models; the NMB is also offered as an option on new Smith Meter turbine and PD meters. Weights and measures use: consult factory.
Pricing and lead time are quoted per configuration. Send the model code (or your application details), product, flow range, and pressure/temperature to Flow Measurement Services for a quote. Specifications summarized from Smith Meter bulletin SSET020; 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.

