The KOFLOC Model 3760 Series High-Precision Mass Flow Meter (Detailed Configuration: 3760-V/D0W-Air-10SLM / 20 deg) is 100% engineered, assembled, and calibrated in Japan by KOFLOC Corp. (Kojima Instruments Inc.) – an internationally recognized technological benchmark with more than 75 years of specialized innovation in micro-flow fluidics and analytical measurement instrumentation. Developed as a compact, cost-effective standard Mass Flow Meter (MFM) based directly on the proven sensor architecture of the renowned Model 3660 Series, the Model 3760 delivers fast, reliable, and highly repeatable gas flow monitoring unaffected by supply line pressure fluctuations and ambient thermal drifts.

The technological cornerstone of the KOFLOC Model 3760 resides in its high-sensitivity capillary thermal mass flow sensor. Utilizing a precision-wound resistance heating element configured around an external metallic capillary bypass, the sensor detects thermal dispersion directly from traveling gas molecules. Because the measurement detects genuine mass flow without requiring internal moving parts (No moving parts), the instrument completely eliminates mechanical friction, particle generation, clogging, and pressure head loss. The system delivers an ultra-fast dynamic response time of under 1 second, with laboratory-grade accuracy of ±1.0% F.S. and superior repeatability between ±0.2% and ±0.5% F.S.

This specific unit is factory calibrated for clean dry air (AIR) across a 10 SLM (Standard Liters per Minute, equivalent to 10,000 SCCM / mL/min) full-scale measuring range referenced to 20 °C and 1 atmosphere (101.325 kPa). Constructed with high-grade SUS316/SUS316L stainless-steel wetted components and sealed with Viton (FKM) and fluorocarbon elastomers, the meter withstands operating pressures up to 500 kPa and proof pressures up to 980 kPa (approx. 10 bar), maintaining ultra-high vacuum leak integrity of ≤ 1 × 10^-8 Pa·m³/s He. Equipped with an industry-standard KFC/SEMI compliant D-sub 9-pin connector delivering a linear 0 to 5 VDC output and 1/4" double-ferrule compression fittings, the KOFLOC 3760 is an indispensable flow measurement instrument for gas chromatography analyzers, vacuum systems, biotechnology bioreactors, and academic research laboratories worldwide.

• Manufacturer: KOFLOC Corp. (Kojima Instruments Inc.)
• Origin: 100% Japan (Kyoto, Japan)
• Product Series: Standard Compact Thermal Mass Flow Meter (MFM)
• Complete Model Code: 3760-V/D0W-Air-10SLM (20 deg) [Configured code: 3760-V/D0W-Air-10SLM-20C]
• Base Series: Model 3760 Series (engineered on the Model 3660 sensor platform)
• Sensing Architecture: Capillary thermal mass flow sensor (temperature-difference detection, no moving parts)
• Calibrated Process Fluid: Clean compressed air / Dry air (AIR)
• Rated Full-Scale Flow Capacity: 10 SLM (Standard Liters per Minute = 10,000 mL/min / 10,000 SCCM)
• Standard Reference Temperature: 20 °C at 1 atm (101.325 kPa)
• Measurement Accuracy: Within ±1.0% F.S. (at 20 °C / 25 °C)
• Measurement Repeatability: Within ±0.2% to ±0.5% F.S.
• Response Speed: High-speed dynamic response, ≤ 1.0 second (to reach 98% of final reading)
• Operating Differential Pressure / Max Pressure: 500 kPa (G) or less
• Proof Pressure Resistance: 980 kPa (G) (approx. 1.0 MPa / 145 psi)
• Helium Leak Integrity: ≤ 1 × 10^-8 Pa·m³/s He
• Analog Output Signal ("V"): 0 to 5 VDC linear voltage output (recommended load resistance ≥ 250 kΩ)
• Electrical Interface: D-sub 9-pin Male connector (KFC standard, compliant with SEMI standards)
• Process Fitting Connections ("W"): 1/4" SWL (Double-Ferrule Lok Compression Tube Fittings)
• Wetted Materials:
  - Body & Internal Flow Passage: SUS316 / SUS316L Stainless Steel
  - Seals & O-rings: Fluoroelastomer FKM (Viton) / Fluorocarbon resin
• Operating Ambient Temperature: 5 °C to 45 °C (Accuracy guaranteed within 15 °C to 35 °C)
• Operating Ambient Humidity: 10% to 90% RH (No condensation allowed)
• Power Supply Requirements: Dual supply ±15 VDC (±5%), approx. +100 mA / -100 mA current consumption
• Net Weight: Compact profile, approx. 650 g – 800 g (Heavy-duty EMI-shielded metal construction)
• Certifications: CE marked, RoHS directive compliant, factory pre-calibrated with traceable inspection test sheet
• Applicable Industries & Systems: Gas chromatography (GC) and environmental monitoring equipment, heat-treating furnace protective gas monitoring, biotechnology fermentation spargers, vacuum leak detection benches, semiconductor and optoelectronic processing research, reference gas blending test rigs, and automated industrial pneumatic instrumentation panels.