The SMC series ALGPD Gear flow meter is suitable for the precise flow measurement of various fluids of viscosities from 5 up to 25k mm²/s. Providing sufficient lubricity of the fluid, the small gear flow meters type ALGPD 01/1 and 02 as well as ball bearing versions may also be used for fluids below 5 mm²/s. Gear flow meters are positive displacement meters, similar in design to a gear pump. The measuring medium rotates two gears, which are engaged with minimum play. The medium is forced along through closed measuring chambers between gears and housing. The gears, which run idle, lose no power. The RPM of the gears is in proportion with the instantaneous flow rate and precisely detected by integral pickups through the body of the meter without contacting the fluid. Flow signal can be displayed our various other electronics. We calibrate our flow meters to match the customer's operating viscosities to determine their K factors.
- High output frequencies resulting in good resolution and suitable for pulsating flows.
- Reverse-flow detection and pulse multiplication functions
- Ex-protection EExiaIICT6/T4
- Resistance to high voltage from 50 kV up to 120 kV
- Special meters with high-pressure connectors up to 690 barg (10,000 PSIG).
- Heated versions are available on request
- The K-factor (no. of pulses per liter) is almost constant over a wide range.
| Flow range |
0.005 to 1000 LPM (.001 to 264 USGPM) |
| Line size |
8-40mm (¼"-1½") |
| Operating pressure |
up to 690 barg (10,000PSIG) |
| Process temperature |
up to+180 °C (356°F) |
| Body Material |
SS as per DIN 1.4122/AISI 303 or 1.4460/AISI 329 |
| Viscosity |
5 up to 25,000 centistokes. |
| Enclosure rating |
NEMA 4X (IP 65) |
| Accuracy |
±0.25% of value for viscosities 50 to 25,000 centistokes |
| Repeatability |
±0.10% |
| Housing protection |
IP65; IP67; IP68 |
| Frequency range |
2 up to 4,000 Hz |
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| Working Humidity |
＜90% @ 75 °F |
| Ambient temperature |
-22 to 158 °F (-30 to +70 °C) |
| Supply Voltage UB |
14-30VDC controlled, UB=(Rload x 20 mA)+ 14V |
| Output |
pulse, 4-20 mA or RS485 |
| Display |
rate, total, low flow cut-off, battery consumption |
| User parameters |
K-factors, linear correction coefficient, flowrate input signal section points, temperature |
| Housing |
IP 68, aluminum AlMgSiPb, blue anodized |
| Ex-protection |
II 2 G EEx ia IIC T4, BVS 03 ATEX E 205 |
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