THF Mass Flow Meter
Flow Rate & Totalizer LCD Display — Flow Rate With or Without LCD Display.
THF SERIES
Flow Rate & Totalizer LCD DisplayFlow Rate With or Without LCD Display
- ±1% & ±2% Accuracy
- Linear Output
- Thermal Technology
- For Using in Non Corrosive Gas
- For Flow Rates up to 600 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 THF 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 THF Series measures the mass flow rate of gases in 5 ranges from 0-250 SLM to 0-600 SLM as shown in the range table.
Technical Data and Dimensions
- Type
- Without LCD Display; Flow Rate with LCD Display; Flow Rate with LCD Display & Blue Back Lighted; Flow Rate with Totalizer LCD Display & Blue Back Lighted
- Wetted Parts Material
- Standard flowbody—SS316, option available. O-ring–Viton
- Output Signal
- 0-5 VDC Linear min. load 1000 Ω or 4-20 mA Linear, loop resistance 500 Ω
- Input Power
- 24VDC standard; optional power supply 15VDC 115VAC, 220VAC @500mA
- Accuracy
- ±1% F.S. (including linearity); ±2% F.S. (including linearity) for range 0-600 SLM
- Turn Down Ratio
- 100:1
- Repeatability
- ±0.15% F.S. or Better
- Electric Connection
- 9 Pin Sub “D”
- Process Connection
- ½” NPT female
- Range
- 0-250 SLM to 0-600 SLM
- Minimum Pressure
- 100” H₂O
- Max. Pressure
- 500 PSIG
- Temperature Range
- 0–50°C
- Response Time
- 1 Second
- Temp. Coefficient
- 0.05% Full Scale per 1°C or Better
- Pressure Coefficient
- 0.01% Full Scale per PSIG or Better
- Flow Unit
- Kg, GAL, Nℓ, Nm³, cc, ℓ, M³ (Flow rate with LCD display: Label by manufacturer; Flow rate with totalizer LCD display: Unit LCD display)
- Weight
- app. 2.45 kg with power supply; app. 2.59 kg with power supply & 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
Standard Scales
| Code | Flow range |
|---|---|
| 00 | 0–250 SLM |
| 01 | 0–300 SLM |
| 02 | 0–400 SLM |
| 03 | 0–500 SLM |
04 — Custom flow range
Connection: ½ in NPT female. Custom flow range: maximum 500 SLM.
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