Formaldehyde (CH₂O) is a critical contaminant in hydrogen used for fuel cells because even trace concentrations can degrade proton exchange membranes, reduce fuel cell efficiency, and shorten system life. The TIGER OPTICS™ HALO™ 3 CH₂O uses proven Cavity Ring-Down Spectroscopy (CRDS) technology to continuously measure trace formaldehyde with detection limits as low as 5 ppb. Designed for hydrogen purity verification, gas standard preparation, research laboratories, and specialty gas applications, the HALO 3 CH₂O delivers drift-free performance, rapid response, and continuous online monitoring without routine zero or span calibration. Contact us today for more details.
Key Benefits of the HALO 3 CH₂O Analyzer
- Ultra-low detection limits for formaldehyde (CH₂O)
- Fully compliant with SAE J2719, ISO 14687, and similar hydrogen purity standards
- Optimized for fuel cell hydrogen, gas standard preparation, and sensor validation
- No zero/span calibration required — reduces maintenance and operational costs
- Real-time, online measurement for continuous purity monitoring
- Fast installation, easy-to-use interface, and compact design
- Reliable performance with no drift or cross-interference
Why Choose the HALO 3 CH₂O?
The HALO 3 CH₂O is engineered specifically for applications where trace formaldehyde must be measured accurately and continuously.
Benefits
- Detects formaldehyde down to 5 ppb
- Continuous online monitoring
- Drift-free CRDS laser technology
- No routine zero or span calibration
- No consumable sensors
- High selectivity with minimal cross-interference
- Fast response for continuous process monitoring
- Compact analyzer design
- Low maintenance
- Supports hydrogen purity compliance programs
Typical Background Gases
The HALO 3 CH₂O supports trace formaldehyde analysis in:
- Hydrogen (H₂)
- Nitrogen (N₂)
- Other supported inert gas matrices, depending on application and configuration.
DETECTION CAPABILITY
| Detection and Matrix | Range | LDL (3σ) | Precision (1σ) @ zero |
|---|---|---|---|
| CH2O in N2 | 0 – 40 ppm | 5 ppb | 1.7 ppb |
| CH2O in H2 | 0 – 40 ppm | 6 ppb | 2.0 ppb |
SPECIFICATIONS
| Performance | |
|---|---|
| Operating range | See Detection Capability table |
| Detection limit (LDL, 3σ/24h) | See Detection Capability table |
| Precision (1σ, greater of) | ± 0.75% or 1/3 of LDL |
| Accuracy (greater of) | ± 4% or LDL |
| Speed of response | < 3 minutes to 95% |
| Environmental conditions | 10°C to 40°C, 30% to 80% RH (non-condensing) |
| Storage temperature | -10°C to 50°C |
| Gas Handling System and Conditions | |
| Wetted materials | 316L stainless steel, 10 Ra surface finish |
| Gas connections | 1/4″ male VCR inlet and outlet |
| Leak tested to | 1 x 10-9 mbar l / sec |
| Inlet pressure | 10 – 125 psig (1.7 – 9.6 bara) |
| Flow rate | <1 slpm |
| Sample gases | Nitrogen and hydrogen |
| Gas temperature | Up to 60°C |
| Dimensions, H x W x D | |
| Standard sensor | 8.73″ x 8.57″ x 23.6″ (222 mm x 218 mm x 599 mm) |
| Sensor rack (fits up to two sensors) | 8.73″ x 19.0″ x 23.6″ (222 mm x 483 mm x 599 mm) |
| Weight | |
| Standard sensor | 34 lbs (15.4 kg) |
| Electrical and Interfaces | |
| Platform | Max series analyzer |
| Alarm indicators | 2 user programmable, 1 system fault, Form C relays |
| Power requirements | 90 − 240 VAC, 50/60 Hz |
| Power consumption | 40 Watts max. |
| Signal output | Isolated 4−20 mA per sensor |
| User interfaces | 5.7” LCD touchscreen, 10/100 Base-T Ethernet |
| USB, RS-232, RS-485, Modbus TCP (optional) | |
| Data storage | Internal or external flash drive |
| Certification | CE Mark |
| Patents | |
| U.S. Patent #7,277,177 | |
SALES | TRAINING INQUIRIES
AMERICAS: info.americas@process-insights.com
EMEAI (includes India): info.emeai@process-insights.com
APAC: info.apac@process-insights.com
CHINA: info.cn@process-insights.com
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