TLFC Mass Flow Controller
Thermal mass flow controller for non-corrosive gas, with an integral valve for local or remote flow adjustment. LCD options show the flow rate or accumulated flow with a totalizer; blue-backlit and no-display options are available.
TLFC SERIES
Flow Rate & Totalizer LCD Display
Flow Rate With or Without LCD Display
- ±1% Accuracy
- Linear Output
- Thermal Technology
- For Using in Non Corrosive Gas
- For Flow Rates up to 50 SLM
- Power Supply Included
The NEW-FLOW Thermomal Mass Flow Meters provide high performance. Thermal Technology offers advantages in accuracy, sensitivity and turn quality components and the latest technology are combined to provide reliable, compact meters and controllers. The TLFC Series Comes With or Without an LCD Display; or Flow Rate with Totalizer LCD Display. All models come with linear 0-5VDC and 4-20mA output. The TLFC Series measures the mass flow rate of gases in 18 ranges from 0-10 SCCM to 0-50 SLM as shown in the range table. The TLFC Series combines a mass flow transducer with an electromagnetic proportional valve. Valves are not recommended as shut off valves. Controllers use a 0-5VDC linear set-point signal supplied from the local set-point pot or from a remote source.
Technical Data and Dimensions
- Display types
- Without LCD; flow rate LCD; flow rate LCD with blue backlight; or flow rate and totalizer LCD with blue backlight.
- Wetted material
- SS316 flow body; Tapcon and optional materials available. Viton O-ring.
- Output signal
- 0–5 VDC linear, minimum load 1000 Ω; or 4–20 mA linear, loop resistance 500 Ω.
- Input power
- 24 VDC standard; optional power supply 15 VDC, 115 VAC or 220 VAC at 500 mA.
- Accuracy
- ±1% F.S., including linearity.
- Turndown ratio
- 100:1
- Repeatability
- ±0.15% F.S. or better.
- Electrical connection
- 9-pin Sub-D.
- Process connection
- ¼ in NPT female.
- Control signal
- Integral set point or remote 0–5 VDC.
- Control valve
- Electromagnetic, normally closed. Not recommended for use as a shut-off valve.
- Range
- 0–10 SCCM to 0–50 SLM at 24 VDC; 0–10 SCCM to 0–20 SLM at 15 VDC.
- Maximum pressure
- SS316: 500 psig; Tapcon plastic: 250 psig.
- Temperature range
- 0–50°C
- Response time
- 1 second.
- Temperature coefficient
- 0.05% of full scale per 1°C or better.
- Pressure coefficient
- 0.01% of full scale per PSIG or better.
- Flow units
- Kg, GAL, Nℓ, Nm³, cc, ℓ, M³. Flow rate LCD: manufacturer-applied unit label. Totalizer LCD: unit shown on the display.
- Weight
- Approximately 1.35 kg with power supply; 1.5 kg with power supply and totalizer.
Dimensions — mm (in)
Display and decimal point functions
Flow-rate LCD
The flow unit is labelled by the manufacturer. Decimal-point positions depend on the displayed range:
| Range | Decimal point |
|---|---|
| 0–1.999 | D3 |
| 2.0–19.99 | D2 |
| 20.0–199.9 | D1 |
| 200–1999 | None |
Flow-rate and totalizer LCD
The upper row shows the accumulated total with 10 digits; the lower row shows flow rate with 8 digits. The flow unit appears on the LCD. The diagram identifies the D1, D2 and D3 decimal-point positions.
Display choices are no LCD, flow-rate LCD, flow-rate LCD with blue backlight, or flow-rate and totalizer LCD with blue backlight.
Dimension drawings include both display versions, all side, front and mounting views, millimetres and inches, and the ±1.0 mm tolerance.
Specify the actual gas and operating conditions for calibration review.
Standard Scales and Operating Differential Pressure
Standard Scales
| Code | Flow range |
|---|---|
| 00 | 0–10 SCCM |
| 01 | 0–20 SCCM |
| 02 | 0–50 SCCM |
| 03 | 0–100 SCCM |
| 04 | 0–200 SCCM |
| 05 | 0–500 SCCM |
| Code | Flow range |
|---|---|
| 06 | 0–1 SLM |
| 07 | 0–2 SLM |
| 08 | 0–5 SLM |
| 09 | 0–10 SLM |
| 10 | 0–15 SLM |
| 11 | 0–20 SLM |
| Code | Flow range |
|---|---|
| 12 | 0–25 SLM |
| 13 | 0–30 SLM |
| 14 | 0–35 SLM |
| 15 | 0–40 SLM |
| 16 | 0–45 SLM |
| 17 | 0–50 SLM |
18 — Custom flow range
Connection: ¼ in NPT female. Custom flow range: maximum 50 SLM. Maximum with 15 VDC: 20 SLM.
Operating differential pressure
- F.S. ≤ 5 SLM: 0.5–3 kg/cm².
- 5 SLM < F.S. < 20 SLM: 1–3 kg/cm².
- 20 SLM < F.S. < 50 SLM: 2–3 kg/cm².
Low differential pressure depends on the gas and flow rate.
Build your TLFC ordering code
Choose each option in PDF order. Single available options are selected automatically.