HALO 3 NH3
Trace-level ammonia
Versatile, sensitive and hassle-free trace ammonia analysis
Ammonia (NH3) is a key impurity in many applications, ranging from industrial process control to the analysis of fuel cell hydrogen. Tiger Optics delivers a powerful analytical tool for the measurement of NH3, based on Continuous-Wave Cavity Ring-Down Spectroscopy (CW-CRDS). The HALO 3’s low detection limit, drift-free operation, and compatibility with many different sample gases make it an ideal tool for monitoring trace amounts of ammonia, for example, to ensure compliance with SAE J2719, ISO 14687 or similar purity standards for hydrogen used for fuel cell electric vehicles (FCEVs)*.
Highly specific to the target molecule, CW-CRDS also prevents cross-interferences from distorting your measurement. Plus, there is no need to perform costly and time-consuming zero and span calibrations, saving both time and money with continuous, online service.
Designed for ammonia analysis in laboratory and process applications:
- Accuracy traceable to the world’s major national reference labs
- Industry-proven technology
- Freedom from the need for span calibrations
- No periodic sensor replacement/maintenance
- Sub-part-per-billion (ppb) detection limit
- Wide dynamic range and no drift
*For fuel-cell hydrogen analysis according to ASTM Standard Test Method D7941, the method detection limit (MDL) is 1 ppb, as determined via U.S. EPA 40 CFR Part 136 Appendix B (95% Confidence Limit).
Applications
| Detection and Matrix | Range | LDL (3σ) | Precision (1σ) @ zero |
|---|---|---|---|
| Standard Model | |||
| NH3 in N2 (Low Range) | 0 – 7 ppm | 0.4 ppb | 0.15 ppb |
| NH3 in N2 (Mid Range) | 0 – 35 ppm | 2.5 ppb | 0.8 ppb |
| NH3 in N2 (High Range) | 0 – 130 ppm | 9 ppb | 3 ppb |
| NH3 in H2 (Low Range) | 0 – 6 ppm | 0.3 ppb | 0.10 ppb |
| NH3 in H2 (Mid Range) | 0 – 30 ppm | 2.0 ppb | 0.7 ppb |
| NH3 in H2 (High Range) | 0 – 110 ppm | 7 ppb | 2.5 ppb |
| NH3 in CO2† | 0 – 30 ppm | 2.5 ppb | 0.8 ppb |
| N2O Model | |||
| NH3 in N2 | 0 – 150 ppm | 7 ppb | 2.5 ppb |
| NH3 in N2O | 0 – 200 ppm | 8 ppb‡ / 40 ppb | 3 ppb‡ / 15 ppb |
| †Cannot be combined with Low or High Range detection in N2/H2 | |||
| ‡Dry vacuum pump required |
| 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 | Most inert, toxic, passive and corrosive matrices |
| 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 | |
| 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, RS-232 |
| 802.11g Wireless (optional), Modbus TCP (optional) | |
| Certification | CE Mark |
| Patents | |
| U.S. Patent #7,277,177 | |
| *Analysis in some specialty gases and certain applications may require a vacuum pump for operation. Please contact us to discuss your specific requirements. |
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