IAS-TS40 HT / HTO Tritium Speciation Monitoring System
A two-cabinet online system that separates tritium into its chemical forms, elemental tritium gas (HT) and tritiated water vapor (HTO), and measures each stream in its own ionization chambers, designed for complex radiation backgrounds.
Quick answer
IAS-TS40 is a multi-form (ht/hto) monitoring system in the IAS-T tritium monitoring series from Iodine Air Systems. It measures tritium from 3.7 × 10⁴ to 3.7 × 10¹¹ Bq/m³ (1 µCi/m³ to 10 Ci/m³). US 120 V / 60 Hz version; calibration certificate and certificate of conformance included; price on quotation.
What the IAS-TS40 does
For dose, the chemical form of tritium matters as much as the amount. Tritiated water (HTO) is taken up by the body far more readily than elemental tritium gas (HT). Under 10 CFR 835, the DOE derived air concentration for HTO (2 × 10⁻⁵ µCi/mL) is 10,000 times lower than for elemental tritium (2 × 10⁻¹ µCi/mL). A monitor that reports only "total tritium" can overstate or understate the hazard by orders of magnitude.
The IAS-TS40 solves this online. The separation and control cabinet splits the sample into an HT stream and an HTO stream. The conversion and catalytic furnace cabinet handles chemical conversion. Each stream goes to its own ionization chambers built for measurement in a complex radiation background. A central console controls the proportional flow valves, reads the chambers, calculates, displays and alarms.
Key features
- Online separation of elemental tritium (HT) and tritiated water (HTO)
- Four ionization chamber sets, each 2 × 1 L wire-wall
- Catalytic conversion furnace cabinet
- Central console: flow proportional-valve control, readout, calculation, display, alarms
- Designed for measurement in complex radiation backgrounds
- Adjustable flow 1–9 L/min (typically 2 L/min)
- Audible and visual alarms
IAS-TS40 specifications
| Configuration | Two cabinets: (1) speciation separation + display/control; (2) conversion + catalytic furnace |
| Detectors | 4 ionization chamber sets, each 2 × 1 L, wire-wall |
| Range (SI) | 3.7 × 10⁴ to 3.7 × 10¹¹ Bq/m³ |
| Range (US units) | 1 µCi/m³ to 10 Ci/m³ (10⁻⁶ to 10 µCi/mL) |
| Range as HTO DAC multiples | 0.05 DAC to 500,000 DAC (HTO DAC 2E-5 µCi/mL) |
| Sample flow | 1–9 L/min; typical setting 2 L/min |
| Alarm | Audible and visual |
| Control | Central console: proportional valves, chamber readout, calculation, display, alarms |
| Sample connections | 6 × 4 mm quick-connect screw fittings |
| Operating environment | 5–40 °C (41–104 °F); 40–90% RH; atmospheric pressure |
| Power | 120 V AC / 60 Hz (US version); 220–230 V / 50 Hz export version; 600 W |
| Dimensions | 600 W × 1000 D × 2050 H mm (23.6 × 39.4 × 80.7 in), confirmed per cabinet at quotation |
Specifications are nominal manufacturer values and may change. Confirmed values are stated on the quotation and data sheet. DAC multiples use the tritiated-water DAC of 2 × 10⁻⁵ µCi/mL (7.4 × 10⁵ Bq/m³) from 10 CFR 20 Appendix B and 10 CFR 835 Appendix A.
Typical applications
- Stack and ventilation exhaust characterization at tritium facilities
- Fusion fuel-cycle and vacuum-pump exhaust streams
- Detritiation system performance (HT to HTO conversion checks)
- Heavy-water reactor and upgrader ventilation
- Facilities that must report HT and HTO releases separately
US supply, documentation and quality
Iodine Air Systems supplies the IAS-T series as an authorized distributor. Instruments are built by our manufacturing partner to our US configuration. Each quotation states the exact deliverables, lead time and country of origin.
- US power version: 120 V AC / 60 Hz for mains-powered models (export versions for 220–230 V / 50 Hz).
- Factory calibration certificate with every instrument, stating the calibration method and reference standards.
- Certificate of conformance and product certification documents supplied with the quotation.
- Specifications in SI and US units, with ranges stated in µCi/mL and in multiples of the tritium DAC (10 CFR 20 Appendix B / 10 CFR 835 Appendix A), so they drop straight into your procedures.
- Commercial-grade supply. Instruments are supplied as commercial-grade items, not as 10 CFR 50 Appendix B / NQA-1 safety-related items. For safety-related use, we support the purchaser's commercial-grade dedication with critical-characteristic data and test records.
- Price on quotation. Price depends on model, options, quantity, documentation package and destination.
Compare with related IAS-T models
Glovebox & Process Tritium Monitor
Process monitor (sealed, all-metal)
View IAS-TG30 →IAS-TA20Rack-Mount Area Tritium Air Monitor
Fixed area monitor (19-inch rack)
View IAS-TA20 →IAS-TG10Wall-Mount Process Tritium Detector
Process detector (wall-mount, PLC-ready)
View IAS-TG10 →See the full IAS-T tritium monitor range or use the tritium DAC converter to check a reading against your limits.
IAS-TS40 FAQ
Why measure HT and HTO separately?
Tritiated water (HTO) is far more radiotoxic than elemental tritium gas (HT). The DOE derived air concentration for HTO is 10,000 times lower than for HT (10 CFR 835 Appendix A), so dose and release assessments need the split.
Can the IAS-TS40 be used for stack effluent monitoring?
It is designed for online multi-form measurement of ventilation and process exhaust. Effluent monitoring programs also depend on representative sampling (for example ANSI/HPS N13.1) and your licensing basis, which we review with you during quotation.
How big is the IAS-TS40?
It uses two cabinets; the catalog dimension is 600 × 1000 × 2050 mm (23.6 × 39.4 × 80.7 in), confirmed per cabinet at quotation. Power draw is about 600 W.
How much does the IAS-TS40 cost?
The IAS-TS40 is priced on quotation. The price depends on options, quantity, power version, documentation package and delivery destination. Send the quote form on this page or email sales@iodineairsystems.com, and we reply with price, lead time and the list of documents supplied.
Is the IAS-TS40 available for US 120 V power?
Yes. Mains-powered IAS-T models are available in a 120 V AC / 60 Hz US version, and in 220–230 V / 50 Hz for export.
What documents come with the IAS-TS40?
A factory calibration certificate, a certificate of conformance, product certification documents and an English operating manual. A commercial-grade dedication support package is available for purchasers who dedicate the instrument for safety-related use.
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