SMC inline mass Flowmeters are thermal dispersion type, utilizing the constant temperature difference method of measuring Gas Mass Flow Rate. It contains two reference grade platinum RTD sensors clad in a protective 316 SS sheath. Features include direct mass flow measurement for gases, wide range-ability, low pressure drop, excellent low end sensitivity, and no moving parts.
The SMC ATMF series is microprocessor based and does not have any potentiometers. Electronics can be Integral Style, or remote mount with rugged, windowed dual compartment enclosure with local or remote display. Four models are available ranging from the low-cost blind meters to the more advanced SP models.
Features
| Process Connections: | Threaded, Flanged |
| Process temperature: | 32 to 392 °F (0 to +200 °C) |
| Operating pressure: | 1000 PSIG (69 barg) |
| Mass Flow rate: | See model selection guide section |
| Accuracy (and linearity): | ±[1% of Reading + (.5% FS)] ± 0.2% of Full Scale |
| Repeatability: | ± 0.25% of Full Scale |
| Flow units: | Kg/hr, Kg/mn, Kg/s Lbhr, Lb/m Lb/s, NCMH, SCFM, NLPM, SLPM, Mt/s, F/mn, BTU/Hr, BTU/min |
| Turn down ratio: | Over 100:1 |
| Material : | 316SS as per DIN 1.4571 (AISI 316 Ti) |
| Gas temperature effect: | 0.01% /° C |
| Response Time: | Less than one second |
| Housing Protection: | NEMA 4,Class 1, Div 1, Groups B, C, & D |
| Display Parameters: | Flow, Total flow, Switch settings, Temperature, Elapsed time |
| Signal Interface: | RS232 & RS485, MODBUS |
| Ex-protection: | II 2 GD EEx d IIC T2 or T3 |
| Cable (remote version): | 300 meters |
| Wetted materials: | 316 SS (std) Hastelloy (optional) |
| Power requirements : | 115VAC @, A 230VAC @ A24 VDC @ ¼A |
| Linear signal output: | 0-5 VDC & 4-20 mA |
| NIST traceable: | Standard for all calibration |
| Data storage: | EPROM storage up to 10 years |
| Pulse Output: | scalable |
| Power Consumption: | 2 Watts or less |
| Relays: | Two 1-amp, SPDT, User-selectable alarm functions |
| weight (approximate) – integral type: | ¼” to 1″: 2.2 to 8.8 lbs (1 to 4 Kg)1¼” to 2½”: 4.4-6.6 lbs (2-3 Kg)3 and 4″: 8.8-11 lbs (4-5 Kg) |
| weight (approximate) – remote type: | ¼” to 1″: 6.6 to 13.2 lbs (3-6 Kg)1¼” to 2½”: 13.2-17.6 lbs (6-8 Kg)3 and 4″: 16.8-22 lbs (8-10 KG) |
