NHA-300C Nitrogen Hydrogen Zero Air Generator for GC

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NHA-300C Nitrogen, Hydrogen and Zero-Air Generator

Product ID：SYQFCdqk003

Price: Please inquire PDF Format

Supply Ability:50SETS/MON

Port:SHENZHEN

Product Introduction
Other information

Model NumberNHA-300C

Brand NameSXZHONGQING

Payment TermsTT，PAYPAL，Alibaba.com Pay

NHA-300C Nitrogen, Hydrogen and Zero-Air Generator

Product Introduction
The NHA-300C Nitrogen, Hydrogen and Zero-Air Generator is an integrated laboratory gas supply system designed to provide nitrogen, hydrogen, and clean air for gas chromatography (GC) instruments. It combines automatic gas generation, pressure regulation, filtration, and safety protection in one compact unit, helping laboratories reduce dependence on external gas cylinders.
The generator provides nitrogen and hydrogen with a specified purity of 99.999%, while the air output supports GC applications requiring a clean air supply. Automatic output adjustment helps match gas production to demand, and the LED digital display makes operating conditions easy to monitor.
Additional features include overpressure and overheating protection, automatic drainage of the stainless-steel gas storage tank, and three-stage oil-free filtration. Designed for low-noise operation and extended use, the NHA-300C is suitable for laboratories requiring a stable supply of gases for compatible gas chromatographs.

Performance Features
1. Three-gas supply: Integrates nitrogen, hydrogen, and zero-air generation for compatible GC applications.
2. High-purity nitrogen and hydrogen: Both gases have a specified purity of 99.999%.
3. Automatic gas production: Starts generating gas when switched on and adjusts output according to demand.
4. Digital monitoring: LED digital display supports convenient monitoring of operating conditions.
5. Multiple safety protections: Includes overpressure, overheating, and liquid carryover protection.
6. Three-stage oil-free filtration: Helps remove contaminants from the gas supply without introducing oil.
7. Stainless-steel gas pathways: Uses high-quality stainless steel for the internal gas circuits.
8. Automatic tank drainage: The stainless-steel gas storage system automatically drains accumulated water.
9. Simplified maintenance: After the initial alkaline solution filling, routine maintenance mainly involves replenishing distilled water, according to the manufacturer's instructions.
10. Stable pressure and low noise: Designed for stable gas delivery with operating noise below 40 dB(A).
11. Durable filtration components: Uses impact-resistant, aging-resistant filters.
12. Continuous operation: Designed to support 24-hour operation when installed and maintained according to the manufacturer's requirements.

Working Principle
The NHA-300C integrates three gas-generation and purification functions:
• Nitrogen generation: Produces nitrogen and passes it through the applicable purification stages to achieve the specified purity and moisture characteristics.
• Hydrogen generation: Generates hydrogen for compatible gas chromatography applications, with output and pressure controlled according to system demand.
• Zero-air generation: Supplies purified air for GC applications that require a clean air source.
The system uses filtration and gas storage components to support gas quality and delivery stability. Automatic output adjustment helps accommodate changing gas consumption, while protective devices monitor operating conditions to help prevent overpressure, overheating, and liquid carryover. The stainless-steel gas storage tank also features automatic drainage.
Note: The source specifications do not detail the individual gas-generation technologies or the zero-air purity specification. Confirm the applicable gas quality requirements for the intended GC detector before use.

Technical Parameters

Parameter	Specification
Model	NHA-300C
Product type	Integrated nitrogen, hydrogen, and zero-air generator
Nitrogen purity	99.999%
Nitrogen oxygen content	Less than 3 ppm
Nitrogen dew point	−56°C
Nitrogen flow rate	0–300 mL/min
Nitrogen pressure	0–0.4 MPa
Hydrogen purity	99.999%
Hydrogen flow rate	0–300 mL/min
Hydrogen pressure	0–0.5 MPa; factory setting 0.4 MPa
Air flow rate	0–2000 mL/min
Air pressure	0–0.4 MPa
Filtration	Three-stage, oil-free filtration
Gas pathway material	Stainless steel
Gas storage tank	Stainless steel, with automatic drainage
Display	LED digital display
Safety protection	Overpressure, overheating, and liquid carryover protection
Operating noise	Less than 40 dB(A)
Power supply	220 V ±10%, 50 Hz
Maximum power consumption	450 W
Ambient humidity	≤85% RH
Dimensions (L × W × H)	500 × 440 × 380 mm
Net weight	40 kg
Operating capability	Designed for continuous 24-hour operation

Application Scenarios
• Gas chromatography laboratories: Supplies gases for compatible GC instruments.
• Flame ionization detection (FID): Provides hydrogen and air where required by the detector configuration.
• Laboratory analytical testing: Supports routine analytical workflows that require nitrogen, hydrogen, and clean air.
• Environmental testing laboratories: Supplies gases for compatible chromatographic analysis of environmental samples.
• Chemical and petrochemical laboratories: Supports GC analysis in chemical quality control and process testing.
• Research and quality control facilities: Provides an integrated alternative to separate gas-generation units for compatible instruments.

NHA-300C vs. Traditional Gas Cylinder Supply

Comparison Item	NHA-300C Integrated Gas Generator	Traditional Gas Cylinders
Gas supply	On-demand generation of nitrogen, hydrogen, and air	Gas supplied from separate cylinders
Gas purity	Nitrogen and hydrogen specified at 99.999%	Depends on cylinder grade and supplier
Output adjustment	Automatic adjustment according to demand	Depends on regulators and cylinder pressure
Routine handling	Reduces routine cylinder replacement requirements	Requires cylinder handling and replacement
Pressure protection	Integrated protective functions	Depends on regulators and external safety equipment
Filtration	Integrated three-stage oil-free filtration	Depends on gas grade and external purification
Installation footprint	Integrated unit measuring 500 × 440 × 380 mm	Depends on the number and size of cylinders
Maintenance	Routine maintenance includes distilled-water replenishment and other manufacturer-specified tasks	Requires cylinder replacement and regulator inspection

Note: Actual operating costs and suitability depend on gas consumption, required purity, maintenance needs, and the GC instrument configuration.

Frequently Asked Questions
1. What is the NHA-300C used for?
It is designed to provide nitrogen, hydrogen, and air for compatible gas chromatography instruments and related laboratory analytical applications.
2. What purity can the nitrogen and hydrogen generators provide?
The specified purity is 99.999% for both nitrogen and hydrogen. Nitrogen is additionally specified with an oxygen content below 3 ppm and a dew point of −56°C.
3. What are the nitrogen and hydrogen output flow rates?
Both nitrogen and hydrogen have adjustable flow rates from 0 to 300 mL/min.
4. What is the maximum air output flow rate?
The specified air flow rate is 0–2000 mL/min, with an output pressure range of 0–0.4 MPa.
5. Does the NHA-300C automatically adjust gas output?
Yes. The system is designed to adjust gas production according to demand, helping match output to the connected instrument's consumption.
6. What safety features are included?
The generator includes overpressure and overheating protection, liquid carryover protection, and automatic drainage of the stainless-steel gas storage tank.
7. What maintenance is required?
The manufacturer states that alkaline solution is added initially and routine maintenance mainly involves replenishing distilled water. Follow the product manual for solution replacement, filter inspection, drainage checks, and other maintenance tasks.
8. Can the NHA-300C operate continuously?
It is designed for 24-hour continuous operation, provided the unit is installed, operated, and maintained within the manufacturer's specified conditions.
9. Is it compatible with all gas chromatographs?
The manufacturer states that it is intended to support gas chromatographs from different manufacturers. However, compatibility must be verified against the instrument's gas consumption, pressure requirements, gas purity specifications, and detector type before installation.

Frequently Asked Questions
1. What is the NHA-300C used for?
It is designed to provide nitrogen, hydrogen, and air for compatible gas chromatography instruments and related laboratory analytical applications.
2. What purity can the nitrogen and hydrogen generators provide?
The specified purity is 99.999% for both nitrogen and hydrogen. Nitrogen is additionally specified with an oxygen content below 3 ppm and a dew point of −56°C.
3. What are the nitrogen and hydrogen output flow rates?
Both nitrogen and hydrogen have adjustable flow rates from 0 to 300 mL/min.
4. What is the maximum air output flow rate?
The specified air flow rate is 0–2000 mL/min, with an output pressure range of 0–0.4 MPa.
5. Does the NHA-300C automatically adjust gas output?
Yes. The system is designed to adjust gas production according to demand, helping match output to the connected instrument's consumption.
6. What safety features are included?
The generator includes overpressure and overheating protection, liquid carryover protection, and automatic drainage of the stainless-steel gas storage tank.
7. What maintenance is required?
The manufacturer states that alkaline solution is added initially and routine maintenance mainly involves replenishing distilled water. Follow the product manual for solution replacement, filter inspection, drainage checks, and other maintenance tasks.
8. Can the NHA-300C operate continuously?
It is designed for 24-hour continuous operation, provided the unit is installed, operated, and maintained within the manufacturer's specified conditions.
9. Is it compatible with all gas chromatographs?
The manufacturer states that it is intended to support gas chromatographs from different manufacturers. However, compatibility must be verified against the instrument's gas consumption, pressure requirements, gas purity specifications, and detector type before installation.