TGF460 compressed air flow meter
-Protable insertion type air flow meters
The high-contrast graphical display of thermal mass flow measurement sensors simultaneously displays flow rate, temperature, total flow, a bar graph, and diagnostic data. Our new digitally-driven circuit replaces our competitors’ standard drift-prone analogue Wheatstone bridge.
This improvement in circuit design enhances stability by removing long-term drift and ensuring a repeatable zero flow data point.
The user can undertake a simple single-point in-situ calibration verification technique using the repeatable zero flow data flow point, which ensures that the thermal mass flow meter installation continues to operate within the accuracy standards of the original NIST traceable calibration
Advantages at a glance:
- Minimum flow rate down to 0.3m/s, 1:100 super-wide turndown ratio
- Compressed air, Nitrogen, non-corresive flow measurement
- pulse and RS485 as a standard, Hart@4~20mA for option
- Hot tapping install, support isntall under pressure
- Bluetooth app offer very easy friendly operating interface
TGF460 Thermal mass flow meter
Ideal for compressed air system
- Specially designed for air and nitrogen standard flow measurement
- Anti-ejection, can be installed/removed under pressure
- Minimum flow rate down to 0.3m/s, 1:100 super wide turndown ratio
- No moving part, almost no pressure loss
- Direct mass flow measurement, free of temperature or pressure compensation
- Optimized power efficiency design, supper low power consumption down to 60mA@24VDC
- Standard output is pulse and RS485, Hart@4~20mA and 4~20mA is available
- Self-diagnose function with connected user’s phone via Bluetooth
Insertion type thermal mass flow meter install method
Specification of TGF460 Compressed air flow meter
| Media Compatibility | Air, Nitrogen |
| Pipe diameter | Insertion:DN25~900mm |
| Inline: DN25~300mm | |
| Flow velocity range | 0.3~30Nm/s |
| 0.6~60Nm/s | |
| 0.9~90Nm/s | |
| 1.2~120Nm/s | |
| 1.5~150Nm/s | |
| 1.8~180Nm/s | |
| Accuracy | 1.5% RD ±0.5% FS |
| Temperature of medium | －40~+150°C |
| Pressure of medium | Insertion: 1.6 MPa |
| Flanged insertion: 6.3 Mpa | |
| Flanged in-line: 6.3 Mpa | |
| Power supply | AC85～264V or DC16～32V |
| Response time | 1 second |
| Output | Frequency and 4~20mA as standard |
| RS~485+Bluetooth as standard , | |
| Communication | 4~20mA@HART as optional |
| Date displayed | Mass flow, Total flow |
| Volume flow in normal condition, | |
| Ingress protection grade | IP65 (GB China) |
| 1 | General model | TGF460 | Standard | |
| 2 | Measurement velocity | 1 | 0.3 ~ 30Nm/s | Option |
| 2 | 0.6 ~ 60Nm/s | Standard | ||
| 3 | 0.9 ~ 90Nm/s | Option | ||
| 4 | 1.2 ~ 120Nm/s | Option | ||
| 5 | 1.5 ~ 150Nm/s | Option | ||
| 6 | 1.8 ~ 180Nm/s | Option | ||
| 3 | Process connection | I1 | Insertion type with 255mm probe | Option |
| I2 | Insertion type with 320mm probe | Standard | ||
| I3 | Insertion type with 395mm probe | Option | ||
| F1 | Flanged insertion type up to 25 barG (362 psiG) | Option | ||
| D1 | Flanged DIN PN16 up to 16 barG (232 psiG) (DN15~DN300) | Option | ||
| D2 | Flanged DIN PN25 up to 25 barG (362 psiG) (DN15~DN300) | Option | ||
| D3 | Flanged DIN PN40 up to 40 barG (580 psiG) (DN15~DN300) | Option | ||
| C1 | Flanged ANSI CL150 up to 16 barG (232 psiG) (0.5 inch~12 inch) | Option | ||
| C2 | Flanged ANSI CL300 up to 40 barG (580 psiG) (0.5 inch~12 inch) | Option | ||
| J1 | JIS 10K up to 16 barG (232 psiG) (DN15~DN300) | Option | ||
| J2 | JIS 20K up to 40 barG (580 psiG) (DN15~DN300) | Option | ||
| 4 | Wet part material | 1 | 316ss sensor with 304ss wet parts | Standard |
| 2 | 316ss sensor with 316ss wet parts | Option | ||
| 5 | Transmitter | T | Integral | Standard |
| R | Remote | Option | ||
| 6 | Cable grinder | M | M20x1.5 | Standard |
| N | NPT 1/2 | Option | ||
| 7 | Transmitte | 1 | pulse/frequency + 4~20mA + RS485 + Bluetooth | Option |
| 2 | pulse/frequency + 4~20mA@HART + Bluetooth | Standard | ||
| 8 | Power supply | 1 | 13.5~42VDC | Standard |
| 2 | 13.5~42VDC with 85~265VAC 50/60Hz power converter | Option | ||
| 9 | Pipe size | xxxx | please use 4 digit pipe size, such as DN50=0050, DN300=0300 | xxxx |
FAQ’s
The thermal mass meter uses the principle of convective heat transfer to measure gas flow. The gas passes over the heated flow sensor, and the gas molecules transport heat away, causing the sensor to cool and energy to be lost. The probe of the meter is inserted into the gas stream of a pipe, stack, or duct in either situation.
Thermal mass flow measurements are typically used to determine the rate of gas flow. The flow of material is directed past a heated element as the principle of action.
In contrast to most other systems that detect volumetric flow and require separate measurements for temperature and pressure in order to determine density and, eventually, mass flow, the thermal Mass Flow Meter installation or thermal mass flow controllers can provide a direct measurement of mass flow.
There are two types of thermal flow meters: rate of heat loss flowmeters and temperature rise flowmeters.
The sensor is placed in one of many test sections adopting the best thermal mass flow meter technology, a known volume of gas has flowed through the pipe, and the signal is measured to obtain the desired overheat. This is repeated at least 12 times during the working range.