A gas density / hydrogen purity analyzer is an instrument used to measure the density of gases and determine the purity of hydrogen in a gas mixture.
It typically operates based on thermal conductivity, vibrating element, or acoustic velocity measurement principles.
These analyzers are widely used in power plants, especially for monitoring hydrogen cooling systems in generators.
They help detect contamination by air or other gases, ensuring safe and efficient operation.
Accurate hydrogen purity measurement is critical to prevent explosive conditions and maintain equipment reliability.
Gas density measurement also aids in process control and performance optimization.
These analyzers provide continuous, real-time monitoring with high precision.
They are designed for robust operation in industrial environments with minimal maintenance.
Advanced models include digital interfaces for data logging and remote monitoring.
Overall, they play a vital role in safety, efficiency, and compliance in hydrogen-handling systems.
Measuring object Gas density of all gases except for corrosive and acetylene gas
Measuring principle Vibration type (resonant frequency)
Sample gas conditions
Temperature: -10 to 50 (non-condensing)
Pressure: Max. 588.5 kPa (abs)
Gas flow:0.1 to 1 l/min
Measuring range Gas density: 0 to 6 kg/m3
Output signal
Output 1: 4-20 mA DC, Isolated, load resistance: 600 max.
Output 2: 4-20 mA DC, Isolated, load resistance: 600 max.
Contact output Signals for Maintenance, Fail, Hi/Low alarm
Contact input Signal for switching between the Hydrogen Purity meter and the Replacement meter
Calibration Manual(one-touch), Semi-automatic, Automatic calibration
Explosion-proof approval Converter Rain-proof for outdoor use, equivalent to IP65 / NEMA 4X
Ambient temperature :-10 to 55℃
Ambient humidity : 5 to 95%RH
GD402T: FM Explosion-proof Approval.
Explosion-proof for Class I, Division 1, Groups B, C and D;
Dust Ignition-proof for Class II, III, Division 1, Groups E, F and G.
Enclosure : NEMA Type 4X
Temperature code : T6
Electrical connection: 1/2NPT female
GD402V: CSA Explosion-proof Approval.
Explosion-proof for Class I, Division 1, Groups B, C and D;
Dust Ignition-proof for Class II, III, Division 1, Groups E, F and G.
Enclosure : Type 4X
Temperature code : T6
Electrical connection: 1/2NPT female
GD402R:: TIIS Explosion-proof approval.
Explosion-proof code : Ex d IIB+H2T6
Temperature code : T6
Electrical connection: G3/4 female
Explosion-proof approval detector Rain-proof for outdoor use, equivalent to IP65 / NEMA 4X
Ambient temperature :-10 to 60℃
Ambient humidity : 5 to 95%RH
GD40T: FM Explosion-proof and Intrinsically safe Approval.
Explosion-proof for Class I, Division 1, Groups B, C and D;
Dust Ignition-proof for Class II, III, Division 1, Groups E, F and G with Intrinsically Safe sensor for Class I, II, III, Division 1, Groups B, C, D, E, F and G.
Enclosure : NEMA Type 4X
Temperature code: T5
Electrical connection : 1/2NPT female
Process connection : 1/4NPT female
GD40V: CSA Explosion-proof and Intrinsically safe Approval.
Explosion-proof for Class I, Division 1, Groups B, C and D;
Dust Ignition-proof for Class II, III, Division 1, Groups E, F and G with Intrinsically Safe sensor for Class I, II, III, Division 1, Groups
B, C, D, E, F and G.
Enclosure : Type 4X
Temperature code : T5
Electrical connection : 1/2NPT female
Process connection : 1/4NPT female
GD40R: TIIS Explosion-proof and Intrinsically safe Approval.
Explosion-proof code : Ex d [ia] IIB+H2T5
Temperature code : T5
Electrical connection : G1/2 female
Process connection : Rc1/4
Power supply 100 to 240 V AC, 24V DC, 50/60 Hz
Performance
Linearity ±1% of F.S.
Repeatability ±0.001 kg/m3 or ±0.5% of F.S. whichever is greater
Long term stability ±0.003 kg/m3 per month
Response time 90% Approx. 5 sec
