For oxygen in classified areas, ACCURRA-Hz measures trace ppm, percent or purity oxygen with the sensor chosen for the background gas, and INFINITY-Tx is a loop-powered transmitter for percent oxygen at the vessel. Confirm certificate scope for your zone.
Specifications
| Item | Specification | Notes |
|---|---|---|
| Measurement | Trace, percent or purity oxygen | Sensor chosen by the background gas |
| Enclosure | Gas Group IIC, Zone 1 and 2, T6 | As per IS/IEC 60079-1:2014 |
| Calibration | Without opening covers | |
| Purity | Ambient pressure and temperature compensated |
From the current Sarvesh product datasheets and company profile. Specifications may change without notice as products improve. The final responsibility to check that a product meets the process and analyser requirement remains with the customer.
Key features
- Panel analyser for ppm and percent oxygen
- Transmitter version for field mounting
- Alarm relays and outputs for interlocks
How it works
Oxygen is the key safety variable wherever flammable gas or vapour is present. Too much oxygen in a blanketed vessel makes it flammable, oxygen in a hydrogen loop is a hazard and a catalyst poison, and oxygen in a solvent dryer sets whether it can be heated.
ACCURRA-Hz covers the ppm and percent ranges in classified areas, and INFINITY-Tx puts a two-wire percent oxygen transmitter on a vessel or vent. Send the background gas, range, pressure and zone.
Requirements and limits
- Confirm current certificate scope against your classification.
On site: utilities and calibration gases
What to have ready at your plant before installation and commissioning.
| Item | Requirement | Notes |
|---|---|---|
| Power at the analyser | 24 V DC, 30 W, or 230 V AC | |
| Zero gas | Zero-grade nitrogen, 99.9999 % | 10 litre cylinder with regulator |
| Span gas, trace oxygen | 1000 ppm oxygen in nitrogen | 10 litre cylinder with regulator |
| Span gas, 3090 | Zero-grade oxygen; zero on zero-grade nitrogen | |
| Span gas, 3190 | Zero-grade oxygen; zero on 95 % oxygen in nitrogen | |
| Instrument air and service nitrogen | 4 kg/cm² minimum | |
| Mounting | Wall mounted in the classified area | Calibration without opening the covers |
Selection guidance
Choose ACCURRA-Hz when you need ppm levels or several outputs, and INFINITY-Tx for percent oxygen at the vessel.
Applications
Application pages where this is part of the recommended solution:
- Autoclaves
- Reactors, hydrogenation and polymerisation
- Nitrogen blanketing and inerting
- Closed-loop dryers and spray dryers
Compatible products
ACCURRA-Hz
Process gas analyser in an enclosure certified for Gas Group IIC, Zone 1 and 2, T6.
View ACCURRA-Hz
INFINITY-Tx
Loop-powered two-wire transmitter for percent O2 and trace CO in hazardous areas.
View INFINITY-TxHeadline filters
Particulate, coalescing and PTFE membrane filters from Headline Filters, UK, for analyser protection.
View Headline filtersFrequently asked questions
Which sensor does it use?
Chosen by the background gas and range; send your gas composition.
Can it measure trace oxygen?
Yes, in ppm.
Is there a transmitter?
INFINITY-Tx, loop powered, for percent oxygen.
Do you have certificates?
Ask us for current copies.
Related pages
- ACCURRA-S
- ACCURRA-S oxygen analysers
- ACCURRA-S carbon monoxide analysers
- ACCURRA-S carbon dioxide analysers
- ACCURRA-S methane analyser
- ACCURRA-S M015 moisture analyser
- ACCURRA-Hz
- INFINITY-Tx
- Hazardous-area hydrogen analyser
- Hazardous-area moisture analyser
- ACCURRA-Zr
- ACCURRA model numbers
- Browse all gas analysers