Flowmeter
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| Brand | MesaLabs |
|---|---|
| Origin | USA |
| Model | Defender 520 |
| Flow Principle | Positive Displacement (Dry Piston) |
| Flow Range | L: 5–500 mL/min |
| M | 50–5,000 mL/min |
| H | 300–30,000 mL/min |
| Volume Accuracy | ±1.0% of reading |
| Temperature Measurement | ±0.8 °C (typ.), ±1.3 °C (max) |
| Pressure Measurement | ±3.5 mmHg (typ.), ±7.0 mmHg (max) |
| Units | mL/min, L/min, cc/min, cf/min |
| Interface | RS-232 |
| Compliance | ISO/IEC 17025 accredited calibration, NIST-traceable, NVLAP Lab Code 200661-0 |
| Software | DryCal Pro v5.x (real-time data logging, audit trail, CSV export) |
| Application Scope | Industrial hygiene, occupational health, ambient air monitoring, personal sampling pump calibration |
| Brand | MesaLabs |
|---|---|
| Origin | USA |
| Model | Defender 530+ |
| Flow Principle | Dry Piston Volumetric Displacement |
| Calibration Traceability | NIST-traceable, ISO/IEC 17025 accredited (NVLAP Lab Code 200661-0) |
| Flow Ranges | L: 5–500 mL/min |
| M | 50–5,000 mL/min |
| H | 300–30,000 mL/min |
| Volumetric Accuracy | ±0.75% of reading |
| Standardized Flow Accuracy | ±1.0% of reading |
| Temperature Accuracy | ±0.8 °C (typical), ±1.3 °C (max) |
| Pressure Accuracy | ±3.5 mmHg (typical), ±7.0 mmHg (max) |
| Units | mL/min, L/min, cc/min, cf/min (volumetric) |
| Interface | RS-232 |
| Compliance | OSHA Technical Manual reference, GLP/GMP-ready audit trail support via DryCal Pro software |
| Brand | MesaLabs |
|---|---|
| Origin | USA |
| Model | FlexCal |
| Flow Range | 5 mL/min to 50 L/min |
| Accuracy | ±0.5% of reading |
| Temperature Sensor | Integrated |
| Pressure Sensor | Integrated |
| Flow Units | sL/min, smL/min, scf/min, scc/m, mL/min, L/min, cc/min, cf/min |
| Temp Units | °C, °F |
| Pressure Units | mmHg, PSI, kPa |
| Measurement Interval | 1–15 sec |
| Gas Compatibility | Non-corrosive, non-condensing gases (<70% RH) |
| Flow Mode | Compressed air or vacuum |
| Readout Modes | Single-cycle, continuous, or pulse-averaged (1–100 readings) |
| Power | 6 V rechargeable sealed lead-acid battery (3 h w/ backlight, 8 h w/o) |
| Environmental Operating Range | 0–70 °C, non-condensing |
| Max Absolute Pressure | 15 PSI |
| Display | Backlit LCD graphic display |
| Data Interface | USB port with 1 m cable |
| Enclosure | Pelican™ protective case |
| Compliance | ISO/IEC 17025 traceable calibration |
| Warranty | 1 year (instrument), 6 months (battery) |
| Origin | UK |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Origin Category | Imported |
| Model | PF204plus / PF216plus |
| Pricing | Available Upon Request |
| Accuracy | ±0.5–2% of reading (ID 13–75 mm, flow velocity >0.2 m/s) |
| Pipe ID Range | PF204plus: 13–115 mm |
| PF216plus | 50–1000 mm |
| Sensor Operating Temperature | –20 °C to +135 °C (Groups A & B) |
| Output | Optically isolated 0/4–20 mA |
| pulse output | 1 pulse/sec, max 5 V |
| Velocity Range | 0.1–20 m/s |
| Display | 64 × 240 pixel graphical LCD |
| Power | Rechargeable battery (20 h typical runtime) or 110/240 VAC ±10% via PSU |
| Certifications | CE compliant |
| Enclosure | Polypropylene carry case with custom molded EPE foam insert |
| Origin | UK |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Origin Category | Imported |
| Model | PF204plus / PF216plus |
| Pricing | Available Upon Request |
| Accuracy | ±0.5–2% of reading (ID 13–75 mm, flow velocity >0.2 m/s) |
| Pipe ID Range | PF204plus: 13–115 mm |
| PF216plus | 50–1000 mm |
| Sensor Operating Temperature | –20 °C to +135 °C (Groups A & B) |
| Output | Optically isolated 0/4–20 mA |
| pulse output | 1 pulse/sec, max 5 V |
| Velocity Range | 0.1–20 m/s |
| Display | 64 × 240 pixel graphical LCD |
| Power | Rechargeable battery (20 h typical runtime) or 110/240 VAC ±10% via external PSU |
| Certifications | CE compliant |
| Enclosure | Polypropylene carrying case with custom-cut foam insert |
| Origin | UK |
|---|---|
| Manufacturer Type | Distributor |
| Origin Category | Imported |
| Model | PF300plus |
| Price | Upon Request |
| Brand | mini-BUCK |
|---|---|
| Origin | USA |
| Manufacturer | A.P. Buck, Inc. |
| Model | M-1 |
| Flow Range | 0.1–300 mL/min |
| Accuracy | ±0.5% of reading |
| Operating Temperature | 0–40 °C |
| Power | Rechargeable 4.8 V NiCd battery (8 h continuous operation) |
| Dimensions | 14 × 15 × 6 cm |
| Weight | 0.9 kg |
| Compliance | NIST-traceable calibration certificate included |
| Measurement Principle | Volumetric soap film displacement |
| Display | Backlit LCD, sunlight-readable |
| Application | Primary standard for gas flow verification of sampling pumps, rotameters, and lab flow devices |
| Origin | USA |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Origin Category | Imported |
| Model | M-30 |
| Product Type | Volumetric |
| Flow Range | 0.1–30 L/min |
| Accuracy | ±0.5% of reading |
| Operating Temperature | 0–40 °C |
| Power Supply | Rechargeable NiCd battery (4.8 V), 8 h continuous operation |
| Dimensions | 14 × 15 × 6 cm |
| Weight | 0.9 kg |
| Compliance | NIST-traceable calibration certificate included |
| Standards | Meets ASTM D6196, ISO 7726, and US EPA Method TO-15/TO-17 flow verification requirements |
| Origin | USA |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Origin Category | Imported |
| Model | M-5 |
| Price | ¥15,800 |
| Product Type | Positive Displacement |
| Flow Range | 1–6000 mL/min |
| Accuracy | ±0.5% of reading |
| Operating Temperature | 0–40 °C |
| Power Supply | Rechargeable NiCd battery (4.8 V), 8 h continuous operation |
| Dimensions | 14 × 15 × 6 cm |
| Weight | 0.9 kg |
| Compliance | NIST-traceable calibration certificate included |
| Brand | Beifen Sanpu |
|---|---|
| Origin | Hebei, China |
| Manufacturer Type | Direct Manufacturer |
| Origin Category | Domestic (China) |
| Model | 50mL |
| Price Range | USD $0.15–750 |
| Type | Volumetric Flowmeter |
| Capacity | 50 mL |
| Construction | Borosilicate Glass Tube with Solvent-Resistant Scale |
| Operating Principle | Time-of-Travel Volumetric Measurement Using Soap Film |
| Brand | OTT Hydromet |
|---|---|
| Origin | Imported |
| Model | MFpro |
| Liquid Velocity Accuracy | ±2% of reading ±0.015 m/s (0–3 m/s) |
| Velocity Range | 0–6.09 m/s |
| Depth Measurement Range | 0–3.05 m |
| Depth Accuracy | ±2% of reading or ±0.015 m, whichever is greater (in still, temperature-stabilized water) |
| Resolution | Adaptive (3–0 decimal places based on magnitude) |
| Display | 3.5" QVGA transflective color LCD |
| Battery Life | >18 hours (rechargeable Li-ion) |
| IP Rating | Sensor IP68, Handheld IP67 |
| Operating Temperature | –20 °C to +55 °C |
| Probe Material | ABS with glass-fiber reinforcement |
| Handheld Housing | Polyethyl ester with shock-absorbing rubber molding |
| Probe Dimensions | 11.9 × 4.3 × 6.3 cm |
| Probe Weight | 0.5 kg (with 6 m cable) |
| Handheld Dimensions | 21.8 × 9.3 × 5.3 cm |
| Handheld Weight | 0.68 kg |
| Data Storage | Up to 50 files (75 readings/file) |
| Interface | USB |
| Brand | LaVision GmbH |
|---|---|
| Origin | Germany |
| Model | PLIF-FlameMaster |
| Type | Planar Laser-Induced Fluorescence (PLIF) Diagnostic System for Quantitative Flame Imaging |
| Application Domain | Internal Combustion Engines, Gas Turbines, High-Pressure Burners, Chemical Reactors, Shock Tubes |
| Measurement Capabilities | OH*, CH*, C2* radical distribution |
| Compliance | Designed for GLP-compliant research environments |
| Interface | Engine synchronization via crank-angle encoder input |
| Software Platform | DaVis 10.5 with FlameMaster Module (supports 2D/3D reconstruction, time-resolved statistical analysis, multi-species spectral deconvolution, and FDA 21 CFR Part 11–compliant audit trail) |
| Brand | Restek |
|---|---|
| Model | 23260 |
| Origin | USA |
| Type | Electronic Volumetric Flowmeter |
| Measurement Range | 0.5–500 mL/min |
| Accuracy | ±2% or ±0.2 mL/min (whichever is greater) |
| Display | LCD |
| Power | 2 × AA batteries |
| Output | USB data interface |
| Certifications | NIST-traceable calibration, Ex-rated for hazardous areas (H₂-compatible) |
| Features | Over-flow alarm, auto power-off, ergonomic handheld/desktop design, leak detection capability, field-reconfigurable gas selection, recalibratable |
| Compliance | Meets ASTM D3588 and ISO 4064-1 general principles for volumetric flow measurement in laboratory gas systems |
| Warranty | 1 year |
| Brand | SonTek |
|---|---|
| Origin | USA |
| Manufacturer Type | Authorized Distributor |
| Origin Category | Imported |
| Pricing | Upon Request |
| Frequency Options | 3000 kHz, 1500 kHz, 1000 kHz, 500 kHz |
| Max Depth Range | 6 m (3000 kHz), 25 m (1500 kHz), 40 m (1000 kHz), 100 m (500 kHz) |
| Min Depth Range | 0.3 m (3000 kHz), 0.5 m (1500 kHz), 1.3 m (1000 kHz), 2.0 m (500 kHz) |
| ADP Diameter | 10 cm |
| Communication | Bidirectional Radio Modem |
| Navigation & Orientation | Integrated Compass and Tilt Sensors |
| Positioning Interface | DGPS-ready (optional integrated DGPS) |
| Software Platform | RiverSurveyor v5.x (including Real-Time Flow Processing, QA/QC Flagging, and Export to CSV/Excel/HEC-RAS) |
| Brand | Sanpu |
|---|---|
| Model | GL-101B |
| Type | Volumetric Flowmeter |
| Measurement Principle | Soap Film Displacement (Capillary Tube Method) |
| Flow Range (Lever 1) | 0.1–100 mL/min |
| Accuracy | ±1% of reading |
| Time Resolution | 0.01 s (0.1–600.0 s) |
| Display | LCD with simultaneous readout of temperature, pressure, volume, and flow rate |
| Power | Rechargeable 4.8 V / 700 mAh battery (standby >300 h |
| External Power | 9 V DC input with in-situ charging capability |
| Operating Environment | Ambient temperature and pressure compensation enabled |
| Compliance | Designed for laboratory calibration, QC verification, and field validation per ISO 4064-2, ASTM D1079, and EPA Method 1021 guidelines |
| Brand | Sanpu |
|---|---|
| Origin | Beijing, China |
| Manufacturer | Yes |
| Type | Volumetric Flowmeter |
| Model | ZM-105A |
| Flow Range | 6–6000 mL/min |
| Accuracy | ±1% of reading |
| Repeatability | <0.5% |
| Flow Resolution | 0.1 mL/min |
| Time Resolution | 0.01 s (displayed as 0.1 s) |
| Operating Temperature | −10°C to +50°C |
| Pressure Range | 101.3 ± 50 kPa |
| Built-in Battery | 4.8 V / 700 mAh, >24 h standby, >500 charge cycles |
| External Power | 9 V DC input with auto-charging circuit |
| Dimensions | 90 × 150 × 280 mm |
| Weight | ~1.3 kg |
| Compliance | JJG 586–2006 |
| Brand | SevenStar |
|---|---|
| Origin | Beijing, China |
| Model | CS200(A) |
| Type | Volumetric Mass Flow Controller |
| Flow Range | 5 sccm to 50 slm |
| Accuracy | ±0.35% F.S. (<35% F.S.), ±1.0% S.P. (≥35% F.S.) |
| Repeatability | ±0.2% F.S. |
| Linearity | ±0.5% F.S. |
| Response Time | ≤1 sec |
| Operating Temperature | 5–45 °C |
| Max Pressure Rating | 3 MPa |
| Seal Material | Viton® fluoroelastomer |
| Input/Output Signals | 0–5 VDC, 0–20 mA, 4–20 mA, RS-485, DeviceNet®, Profibus® |
| Power Supply | ±15 VDC, 24 VDC, or +14–+28 VDC |
| Valve Configuration | Normally Open (≤30 slm), Normally Closed (>30 slm) |
| Zero Drift | <0.6% F.S./year (without auto-zero) |
| Temperature Coefficients | Zero ≤±0.05% F.S./°C |
| Pressure Drop Range | 0.05–0.35 MPa (F.S. ≤10 slm), 0.1–0.35 MPa (10–30 slm), 0.2–0.45 MPa (>30 slm) |
| Helium Leak Rate | ≤1×10⁻¹⁰ Pa·m³/sec |
| Standard Fittings | Dual Ferrule 1/4", 1/8", Φ3 mm, Φ6 mm, Φ10 mm, 3/8", VCR 1/4", VCO 1/4" |
| Surface Roughness | 25 µin |
| EMC Compliance | CE |
| Weight | 1 kg |
| Brand | SevenStar |
|---|---|
| Origin | Beijing, China |
| Model | CS300 |
| Product Type | Volumetric Mass Flow Controller |
| Accuracy | ±1% S.P. (≥35% F.S.), ±0.35% F.S. (<35% F.S.) |
| Linearity | ±0.5% F.S. |
| Repeatability | ±0.2% F.S. |
| Response Time | ≤0.8 sec (≤0.5 sec optional) |
| Operating Pressure Drop Range | 0.05–0.35 MPa (≤10 SLM), 0.1–0.35 MPa (>10 SLM), <0.02 MPa (for low-pressure variants) |
| Temperature Coefficient | Zero ≤±0.02% F.S./°C |
| Burst Pressure | 3.5 MPa |
| Helium Leak Rate | ≤1×10⁻¹¹ Pa·m³/sec |
| Surface Roughness | Ra ≤5 µin |
| Input/Output | RS485 / DeviceNet / (0–5) VDC |
| Power Supply | ±11–±16 VDC (bipolar) or +11–+28 VDC (unipolar) |
| Operating Ambient Temperature | 0–50 °C |
| Standard Fitting Types | VCR 1/4", 1.125" C/W, 1.5" B/C/W |
| Enclosure Weight | 0.8–1.2 kg |
| Sealing Material | Metal |
| Brand | SevenStar |
|---|---|
| Origin | Beijing, China |
| Model | D07-11C |
| Type | Volumetric (Thermal Mass Flow Principle) |
| Flow Range | 5–30 sccm, 50–500 sccm, 1–30 slm |
| Accuracy | ±1% F.S. (±2% F.S. for 20 & 30 slm) |
| Repeatability | ±0.2% F.S. |
| Linearity | ±0.5% F.S. (±2% F.S. for 20 & 30 slm) |
| Response Time | Electrical ≤10 s |
| Operating Temperature | 5–45 °C |
| Max Working Pressure | 10 MPa |
| Sealing Materials | Viton®, Neoprene, PTFE |
| Input/Output Signal | 0–5 V DC (Zin >100 kΩ, Iout ≤3 mA) |
| Power Supply | ±15 V DC |
| Electrical Interface | D-Sub 15-pin Male |
| Pressure Drop Range | 0.2–0.6 MPa (for F.S. >10 slm) |
| Helium Leak Rate | ≤1×10⁻¹⁰ atm·cm³/s (≤1×10⁻¹¹ Pa·m³/s) |
| Standard Fittings | Dual Ferrule 1/8", Φ3 mm, Φ6 mm, Φ8 mm, Φ10 mm, 3/8", 1/4", VCR 1/4" |
| EMI Immunity | CE Certified |
| Weight | 1 kg |
| Brand | SevenStar |
|---|---|
| Origin | Beijing, China |
| Model | D07-19B |
| Flow Type | Thermal Mass Flow (N₂-calibrated) |
| Full-Scale Range | 5 SCCM – 30 SLM |
| Control Range | 2–100% F.S. |
| Accuracy | ±1% F.S. (≤10 SLM), ±2% F.S. (>10 SLM) |
| Linearity | ±0.5–1% F.S. (≤10 SLM), ±2% F.S. (>10 SLM) |
| Repeatability | ±0.2% F.S. |
| Response Time | ≤2 s |
| Operating Temperature | 5–45 °C |
| Pressure Drop | 0.1–0.5 MPa (≤10 SLM), 0.1–0.3 MPa (>10 SLM) |
| Burst Pressure | 3 MPa |
| Helium Leak Rate | ≤1×10⁻⁹ SCCS |
| Sealing Materials | Viton®, PTFE, Neoprene |
| Electrical Interface | DB15 male connector |
| Mechanical Interfaces | VCR 1/4", φ4 mm / φ6 mm hose, Swagelok 1/8" / 1/4", or φ3 mm / φ6 mm tubing |
| EMC Compliance | CE |
| Weight | 0.95 kg |
| Brand | SevenStar |
|---|---|
| Origin | Beijing, China |
| Model | D07-19BM |
| Flow Type | Thermal Mass Flow Measurement |
| Gas Calibration Medium | Nitrogen (N₂) |
| Standard Conditions | 0 °C (273.15 K), 101325 Pa |
| Full-Scale Range (N₂) | 5 SCCM to 30 SLM |
| Control Range | 2–100% F.S. |
| Accuracy | ±1% F.S. (≤10 SLM), ±2% F.S. (>10 SLM) |
| Linearity | ±0.5–1% F.S. (≤10 SLM), ±2% F.S. (>10 SLM) |
| Repeatability | ±0.2% F.S. |
| Response Time | ≤2 s |
| Operating Temperature | 5–45 °C |
| Maximum Working Pressure Drop | <0.02 MPa |
| Burst Pressure Rating | 10 MPa |
| Helium Leak Rate | ≤1×10⁻⁹ SCCS He |
| Sealing Materials | Fluoroelastomer (FKM), Polytetrafluoroethylene (PTFE), Chloroprene Rubber (CR) |
| Mechanical Interface Options | VCR 1/4″, φ4 mm / φ6 mm hose barb, Swagelok 1/8″ / 1/4″, or φ3 mm / φ6 mm tubing ports |
| Electrical Connector | DB15 male |
| EMC Compliance | CE certified |
| Weight | 0.7 kg |
| Brand | SevenStar |
|---|---|
| Origin | Beijing, China |
| Model | D07-19C |
| Flow Type | Thermal Mass Flow |
| Full-Scale Range (N₂) | 5 SCCM to 20 SLM |
| Control Range | 2–100% F.S. |
| Valve Type | Solenoid-Controlled Proportional Valve (Normally Closed) |
| Accuracy | ±1% F.S. (≤10 SLM), ±2% F.S. (＞10 SLM) |
| Linearity | ±0.5–1% F.S. (≤10 SLM), ±2% F.S. (＞10 SLM) |
| Repeatability | ±0.2% F.S. |
| Zero Temp. Coefficient | ≤±0.05% F.S./°C |
| Span Temp. Coefficient | ≤±0.1% F.S./°C |
| Response Time | ≤1.5 s |
| Operating Temperature | 5–45°C |
| Operating Differential Pressure | 0.1–0.5 MPa (≤10 SLM), 0.1–0.3 MPa (＞10 SLM) |
| Burst Pressure | 3 MPa |
| Leak Rate | ≤1×10⁻⁹ SCCS He |
| Sealing Materials | Fluoroelastomer (FKM), Polytetrafluoroethylene (PTFE), Chloroprene Rubber (CR) |
| Mechanical Interface Options | VCR 1/4", φ4 mm / φ6 mm hose, Swagelok 1/8" / 1/4", φ3 mm / φ6 mm tubing |
| Electrical Interface | DB15 Male Connector |
| EMC Compliance | CE |
| Weight | 1.2 kg |
| Brand | SevenStar |
|---|---|
| Origin | Beijing, China |
| Model | D07-19CM |
| Flow Type | Thermal Mass Flow Measurement |
| Gas Calibration Medium | Nitrogen (N₂) |
| Standard Conditions | 0 °C (273.15 K), 101325 Pa |
| Full-Scale Range (N₂) | 5 SCCM to 20 SLM |
| Control Range | 2–100% F.S. |
| Accuracy | ±1% F.S. (≤10 SLM), ±2% F.S. (>10 SLM) |
| Linearity | ±0.5% F.S. (≤10 SLM), ±2% F.S. (>10 SLM) |
| Repeatability | ±0.2% F.S. |
| Response Time | ≤1.5 s |
| Zero Temp. Coefficient | ≤±0.05% F.S./°C |
| Span Temp. Coefficient | ≤±0.1% F.S./°C |
| Operating Temperature | 5–45 °C |
| Maximum Working Pressure Drop | <0.02 MPa |
| Burst Pressure Rating | 10 MPa |
| Helium Leak Rate | ≤1×10⁻⁹ SCCS |
| Sealing Materials | Fluoroelastomer (FKM), Polytetrafluoroethylene (PTFE), Chloroprene Rubber (CR) |
| Process Connections | VCR 1/4″, φ4 mm / φ6 mm hose, Swagelok 1/8″ / 1/4″, or φ3 mm / φ6 mm tubing |
| Electrical Interface | DB15 male connector |
| EMC Compliance | CE certified |
| Weight | 1 kg |
| Brand | SevenStar |
|---|---|
| Origin | Beijing, China |
| Model | D07-7B |
| Type | Thermal Mass Flow Controller |
| Flow Ranges | 5–10,000 sccm (selectable per unit) |
| Accuracy | ±1.5% FS |
| Repeatability | ±0.2% FS |
| Linearity | ±1.0% FS |
| Response Time (Electrical) | ≤10 s |
| Response Time (Gas) | ≤4 s |
| Operating Temperature | 5–45 °C |
| Maximum Working Pressure | 3 MPa |
| Pressure Drop Range | 0.1–0.5 MPa |
| Seal Materials | Viton (FKM), Neoprene |
| Input/Output Signal | 0–5 V DC (Input Impedance >100 kΩ |
| Power Supply | +15 V / 50 mA, −15 V / 200 mA |
| Electrical Interface | D-Sub 15-pin Female |
| Leak Rate | ≤1×10⁻⁸ atm·cm³/s He (≤1×10⁻⁹ Pa·m³/s He) |
| Standard Fittings | Dual Ferrule (Φ3/Φ6/Φ8 mm, 1/8″/1/4″), VCR 1/4″, φ4×1 & φ6×1 Flexible Tube Ports |
| Weight | 1.1 kg |
| Brand | SevenStar |
|---|---|
| Origin | Beijing, China |
| Model | D07-7C |
| Flow Range (N₂) | 5 SCCM to 10 SLM |
| Control Range | 2–100% F.S. |
| Valve Type | Solenoid-Controlled Proportional Valve (Normally Closed) |
| Accuracy | ±1.5% F.S. |
| Linearity | ±1% F.S. |
| Repeatability | ±0.2% F.S. |
| Electrical Response Time | 10 s |
| Gas Response Time | ≤4 s |
| Operating Temperature | 5–45 °C |
| Operating Pressure Drop | 0.1–0.5 MPa |
| Burst Pressure Rating | 3 MPa |
| Helium Leak Rate | ≤1×10⁻⁸ atm·cm³/s |
| Sealing Materials | Fluoroelastomer (FKM), Chloroprene Rubber (CR) |
| Electrical Connector | DB15 Female |
| Tube Fitting Options | VCR 1/4″, φ4 mm & φ6 mm hose, Swagelok 1/4″, φ3 mm & φ6 mm |
| EMC Compliance | CE |
| Weight | 1.1 kg |
| Brand | SevenStar |
|---|---|
| Origin | Beijing, China |
| Model | D07-7CM |
| Flow Principle | Thermal Mass Flow Measurement (Constant Temperature Anemometry) |
| Gas Medium | N₂-calibrated (standardized at 0 °C, 101.325 kPa) |
| Full-Scale Range | 5 SCCM – 10 SLM (N₂) |
| Control Range | 2–100 % F.S. |
| Accuracy | ±1.5 % F.S. |
| Linearity | ±1 % F.S. |
| Repeatability | ±0.2 % F.S. |
| Response Time | ≤10 s |
| Operating Temperature | 5–45 °C |
| Maximum Pressure Drop | <0.01 MPa |
| Burst Pressure | 3 MPa |
| Helium Leak Rate | ≤1×10⁻⁸ atm·cm³/s |
| Sealing Material | Fluoroelastomer (FKM) or Neoprene |
| Power Supply | +15 V/50 mA, −15 V/50 mA |
| Analog Output | 0–5.00 V DC |
| Electrical Connector | DB15 female |
| Process Connections | VCR 1/4″, Swagelok 1/4″, or φ3/φ4/φ6 stainless steel tubing |
| EMC Compliance | CE certified |
| Weight | 0.92 kg |
| Construction | Tubular bypass design with integrated thermal sensor |
| Brand | SevenStar |
|---|---|
| Origin | Beijing, China |
| Model | D08-1F |
| Power Supply | ±15 V DC / 400 mA, +5.00 V DC / 5 mA |
| Input Voltage Range | 85–260 V AC |
| Max. Power Consumption | 15 W |
| Analog Input Signals | 0–+5 V (voltage), 4–20 mA (current, optional 0–10 mA) |
| Analog Output Signals | 0–+5 V (flow detection), ±15 V (valve control) |
| Display Channels | 1-channel MFC/MFM interface |
| Weight | 1 kg |
| Compliance | CE-certified |
| Type | Volumetric flow display instrument for gas mass flow controllers and meters |
| Brand | SevenStar |
|---|---|
| Origin | Beijing, China |
| Model | D08-8C |
| Type | Volumetric Flow Totalizer |
| Power Supply | 85–265 VAC, 50/60 Hz, 12 W |
| Output Voltages | +15 V @ 200 mA, −15 V @ 400 mA |
| Max. Accumulated Flow | 999999 L or m³ |
| Accumulation Accuracy | < ±0.3% FS |
| Input/Output Signals | 0–+5 V analog (flow detection, setpoint, valve control) |
| Display | Dual digital LCD (instantaneous & cumulative flow) |
| Control Channels | 1-channel MFM/MFC interface |
| Weight | 0.5 kg |
| Enclosure Grounding | Dedicated chassis ground terminal |
| Compliance | CE-marked |
| Origin | Japan |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Origin Category | Imported |
| Model | FC-L1 / FC-M1 |
| Price Range | USD 4,200 – 7,000 (FOB) |
| Liquid Mass Flow Accuracy | ±3% (FC-L1), ±2% or ±0.003 L/min (whichever is greater) for FC-M1 |