Flow range (N2 equivalent,
20℃/1 atm) |
1 SCCM–20 SLM (The conditions are freely selectable) |
Sensor |
Thermal mass flow sensor |
Valve type |
Proportional solenoid valve (closed when not energized) |
Control range |
2–100% (F.S.) |
Response |
1 sec. or less (0–100% within ±2% typical) |
Accuracy |
±1% F.S. (Accuracy guaranteed at 15–35℃) |
Repeatability |
±0.2%F.S. |
Operating differential
pressure |
F.S. ≤ 5 SLM: 50–300 kPa |
F.S. > 5 SLM: 100–300 kPa |
Option: Low differential pressure (LP) specification is available depending on conditions. |
Allowable operating pressure |
300 kPa (G) or less |
Proof pressure |
980 kPa (G) |
Leak rate |
1 × 10-11 Pa·m3/s or less |
Allowable ambient temperature |
0–50℃ |
Allowable ambient humidity |
10–90% (No condensation allowed) |
Materials of parts in
contact with gases |
Body: SUS316L |
Diaphragm:SUS316L |
Valve seat: PTFE |
Sealing: SUS316L, Ni, Au |
Option: SUS seal (SU), inner surface polish (KP) |
Electric connection |
Dsub 9-pin connector as per KFC Standard (Compliant with SEMI Standard) |
Flow rate input signals |
0–5 VDC (Input impedance: 1 MΩ or more) |
Flow rate output signals |
0–5 VDC (External load resistance: 250 kΩ or more) |
Required power supply |
+15 VDC (±5%) 100 mA, −15 VDC (±5%) 200 mA |
Joint (Main unit bore) |
Standard: 1/4 VCR equivalent Option: 1/4 SWL |
Weight |
Approx. 1000 g |