NIST Traceable Calibration

Reads and Controls Gas Mass Flow Without Temperature or Pressure Compensation

Available in Economical Aluminum or Corrosion-Resistant 316 SS

Tiltable LCD Display for Easy Reading

Accuracy DetailFor units with full range less than 100 SLM ± 1% FS, including linearity over 15 to 25°C (59 to 77°F) and 0.7 to 4.2 kg/cm² (10 to 60 psia). For units ≥ 100 SLM Full Range: ± 1.5% FS, including linearity over 15 to 25°C (59 to 77°F) and 0.7 to 4.2 kg/cm² (10 to 60 psia) from 20 to 100% of range

± 3% FS from 0 to 20% of range

Altitude SensitivityHorizontal flow path, no shift in calibration up to +20 degree pitch

CalibrationNIST Certificate

ComplianceCE

Control ValveSolenoid Valve

Electrical Output4 to 20 mA, 0 to 5 Vdc

Enclosure RatingsInst. Level II/Poll. Degree II (IEC 60664)

Humidity Range0 to 70% RH

Leak Rate Under Vacuumless than 10^⁻⁷ cc He/s

Operating Pressure, Min0 psi

Operating Pressure Note35 kg/cm² gage (500 psig)

70 kg/cm2 gage (1000 psig) for ranges up to 100 SLPM. 1.76 kg/cm (25 psig) optimum

Operating Temperature, Max50 °C

Operating Temperature, Min5 °C

Output DetailLinear 0 to 5 Vdc: 1000 V minimum load 4 to 20 mA: 50 to 500 V loop resistance, ± 20 mV max noise

Output SignalCurrent, Voltage

Pressure Coefficient0.01% FS/psi

Pressure Drop, Max50 psi

Repeatability± 0.5%

Response Time5 sec

Response Time Note5 seconds to within ± 2% of set flow rate over 25 to 100% FS

Supply CurrentUp to 800 mA

Supply Voltage12 to 15 Vdc

Temperature Coefficient0.15% FS/°C

Turndown Ratio40:1

Volumetric Flow Rate, Min0.25 SCCM