Trimec-FP TF-series of Small Capacity Electronic Flowmeters
The Trimec series of small-capacity electronic flowmeters are volumetric flowmeters for the measurement of clean liquids or low flows.
Trimec's TF Series of Oval Gear PD flowmeters offer a high level of accuracy turndown & repeatability. These precision flow meters are used for flow rate measurement in flow monitoring & control application and for totalising in dispensing and batching. The micropulse gear meters are suitable for use with a wide range of clean liquids including:
- viscous lubricants
- chemicals
- food bases
- non-conductive low viscosity solvents either pumped or gravity fed.
Oval Gear Flowmeters use two fine-toothed meshed gears that are oval in shape and engage each other in a precision machined body. This fluid is transferred sequentially from the inlet to the outlet and one or two pulses are transmitted for each revolution of the gear. Embedded within the gear is a pair of chemically resistant magnets that provide external signals. Detection of the rotation uses either a reed switch or a Hall effect sensor on the outside of the fluid housing. A choice of materials allows the meters to be used in a variety of corrosive applications.
These flowmeters are suitable for use in hazardous areas, while the basic meter is classed as simple apparatus, enabling use in monitoring flows of low-viscosity hydrocarbons, fuels, and solvents.
Small Capacity Oval Gear PD Meter Features
- High accuracy & repeatability, direct volumetric reading
- No requirement for flow conditioning (straight pipe runs)
- Stainless Steel rotors (Optional PPS Rotor for TF008 meter)
- Measures high & low viscosity liquids
- Quadrature pulse output option & bi-directional flow
- Only two moving parts
Small Capacity Oval Gear PD Meter Suitable Applications
- additives for fuel
- consumer products
- water treatment & flotation cells
- corrosion inhibitors
- catalysts
- emulsifiers
- oils
- grease
- fragrances
- adhesives
- solvents
- ink & insecticides.
Small Capacity Oval Gear PD Meter Meter Selection
Small Capacity Oval Gear PD Meter Instruments
- BT LCD 5-digit reset, 8-digit cumulative totaliser
- RT14 LCD 8-digit reset, cumulative totaliser, analogue, and pulse outputs with backlit display
- RT40 LCD 6-digit reset, cumulative totaliser, and flow rate. Backlit display
- EB LCD 6-digit 2-stage batcher and cumulative totaliser (available for remote mounting and with Intrinsically Safe [I.S] approvals)
Small Capacity Oval Gear PD Flow Meter Specifications
| TF004 | TF006 | TF008 | |
| Normal size (mm) | 4mm (1/8") | 6mm (1/4") | 8mm (3/8") |
| Nominal Flow range * @ 3cP |
1 - 36 L/hr | 2 - 100 L/hr | 15 - 550 L/hr |
| (0.26 - 9.5 USG/hr) | (0.5 - 26.4 USG/hr) | (4 - 145 USG/hr) | |
| Accuracy | + 1% of reading (accuracy is + 0.2% of reading iwth optional RT12 / RT14) | ||
| Repeatability | Typically + 0.03% of reading | ||
| Ambient Temperaure range | -40°c to +120°c | ||
| Maximum pressure (AL metres) | 15 Bar (220 psi) | ||
| Maximum pressure (SS metres) | 34 Bar (495 psi) | ||
| Protection class | IP68/67 (NEMA4X, Integral ancillaries can be supplied intrinsically safe [I.S]) | ||
| Recommended filtration | 200 mesh (75 microns) | ||
Output Pulse Resolution - Pulses per Litre (Pulses per USG) - Nominal
| TF004 | TF006 | TF008 | |
| Reed switch | 2800 (10600) | 1050 (3975) | 355 (1345) |
| Hall effect | 2800 (10600) | 1050 (3975) | 710 (2690) |
| QP-Quadrature Hall effect | 2800 (10600) | 1050 (3975) | 710 (2690) |
| RH (High Resolution) Hall effect | 11200 (42400) | 4200 (15900) | N/A |
| Reed switch output | 30Vdc x 200mA max. (maximum thermal shock 10°c / minute) | ||
| Hall effect output (NPN) | 3 wire open collector, 5-24Vdc max., 20mA max. | ||
| Optional outputs | 4-20mA, scaled pulse, quadrature pulse, flow alarms for two-stage batch control | ||