Hydrogen needs IIC
Hydrogen has a very low minimum ignition energy and is the most demanding gas group. The IS-04Z1 is designed for Ex ib IIC T4, so one specification covers the reformer, the synthesis loop and any new hydrogen plant.
New Zealand · Ballance Agri-Nutrients
Explosion proof mobile phone for Ballance Agri-Nutrients, Kapuni
Ballance Agri-Nutrients is a farmer-owned cooperative that runs New Zealand's only ammonia-urea plant at Kapuni in Taranaki. For the HSE, engineering and shutdown teams there, an explosion proof mobile phone for New Zealand fertiliser work has to cope with natural gas, hydrogen and ammonia on one site, under a gas supply that has repeatedly been in doubt. This page sets out what is classified at Kapuni and what the IS-04Z1 is designed for. The IS-04Z1 is designed around intrinsic safety rather than a flameproof enclosure.
Launching Q4 2026 · IECEx certification in progress
Local approvalAS/NZS · IECExIECEx · AS/NZS in progress
AvailabilityQ4 2026via authorised distributors
The site · Ballance Agri-Nutrients
What is classified at Kapuni
Kapuni makes ammonia from natural gas and converts it to granular urea, and news reports put it at about a third of the urea New Zealand uses each year. The process starts with reforming, which produces a hydrogen-rich synthesis gas, then ammonia synthesis under pressure, then urea formation and granulation. Natural gas is gas group IIA, hydrogen is IIC, and ammonia is IIA but toxic well below any flammable concentration, so the plant's gas-detection and emergency procedures matter as much as its zone drawings. Granulation and handling of the urea product create dust, and the site's classification decides whether any of that counts as a Zone 21 or 22 area; do not assume. The site is also changing: in February 2026 Ballance reported that its Kapuni Project, with Hiringa Energy, reached financial close, bringing renewable energy and green hydrogen production to the site.
Operator and context
- Ballance Agri-Nutrients
- Farmer-owned cooperative; owns and runs the Kapuni plant.
- Kapuni plant
- New Zealand's only ammonia-urea manufacturing plant, in South Taranaki.
- Gas dependence
- Natural gas is both feedstock and fuel.
- Gas supply, 2025 to 2026
- A possible four-month shutdown was flagged in August 2025, then short-term supply agreements followed.
- Kapuni Project
- With Hiringa Energy; financial close reported February 2026.
- Awarua
- Ballance also has a phosphate fertiliser plant near Invercargill.
Classified and sensitive areas
- Reformer and synthesis gas
- Natural gas and hydrogen-rich IIC atmospheres.
- Ammonia synthesis loop
- High-pressure process; flammable and toxic.
- Ammonia storage and loading
- Toxic release is the main concern.
- Urea plant and granulation
- Dust and process vapour; classification decides zone.
- Hydrogen production and handling
- New with the Kapuni Project; gas group IIC.
- Control room and laboratory
- Safe area, outside the classified boundary.
Built for local conditions
What Kapuni asks of an explosion proof mobile phone in New Zealand
Most of the risks at a fertiliser plant are about what a person does after a release, not only before. The handset has to be safe to carry in a gas atmosphere and useful in an emergency, without being mistaken for a gas detector.
IP ratingIP68
Battery4,000 mAh
Camera50 MP
OSAndroid 16
Ammonia is a people hazard first
An ammonia release is a toxic event that calls for breathing apparatus and muster. The handset is not a gas detector and does not replace one; its role is to carry the call, a position and a photograph back to the control room.
Stop-start operation
A plant running on short gas contracts is repeatedly prepared for shutdown and brought back. Each cycle generates permits, isolation checks and leak checks, and an enrolled handset keeps their photographs and times together.
One site, one console
Kapuni is a single large site, so an MDM console can manage every device from one place. Android 16, Android Enterprise and existing MDM tools mean policy is set once; the 4,000 mAh cell is specified to last a shift.
Use cases · Ballance Agri-Nutrients
Where the IS-04Z1 goes to work.
Operations01
Plant rounds across the loops
An operator walking from reformer to synthesis loop to urea plant records readings, photographs a leaking flange and calls the control room, all without leaving the classified area.
Shutdown02
Short-notice shutdown and restart
If supply is interrupted, crews isolate and purge quickly. Photographs of each valve and blind, tied to the permit and a time stamp, support the handover to the restart team.
Projects03
Hydrogen and construction work
New renewable and hydrogen work on a live site puts construction contractors next to operating plant. A managed handset limits apps and logs who was where.
Procurement · Ballance Agri-Nutrients
Buying an explosion proof mobile phone for a New Zealand fertiliser plant
We have no relationship with Ballance and this page does not describe its internal process. These are the points any fertiliser plant's engineering and HSE teams will raise with a supplier of equipment for classified areas.
- Certificate evidence
- IECEx Certificate of Conformity for Zone 1 gas, IIC and T4; none has been issued and certification is in progress.
- Hydrogen scope
- Confirm the certificate covers gas group IIC, since that is what hydrogen requires.
- Toxic gas procedures
- The plant's gas-detection and emergency-response procedures sit alongside Ex certification and are not replaced by it.
- Local route
- A New Zealand partner is the usual route for service, spares and radio compliance for a foreign manufacturer.
Questions · Ballance Agri-Nutrients
Frequently asked questions
Is Kapuni still running?
Ballance flagged a possible shutdown of up to four months in August 2025 and later secured short-term gas contracts, the latest reported running to late March 2026. Check its own announcements for the current position.
Does hydrogen change the requirement?
It raises it. Hydrogen is gas group IIC, so a device must be marked for IIC, as the IS-04Z1 is designed to be, rather than IIA or IIB.
Does urea dust need a Zone 21 device?
Only if the site's classification says so. Zone 21 is a design target of the IS-04Z1, but the classification dossier decides which areas apply.
Is Ballance's Awarua plant covered here?
No. Awarua makes phosphate products near Invercargill and has a different hazard profile, so this page deals with Kapuni.
Enquiry · Ballance Agri-Nutrients
Ask about the IS-04Z1 for Ballance Agri-Nutrients, New Zealand
Tell us the site, the zone and gas group, and roughly how many handsets. The SAMS team replies by email with the datasheet and the certification schedule for New Zealand. The IS-04Z1 is pre-launch and certification is in progress, so there is no list price yet; indicative pricing is issued in writing against a stated quantity and site.
Enquiry · Ballance Agri-Nutrients
Launching Q4 2026
Evaluating the IS-04Z1 for this site?
Tell us the zone, gas group and operator. We will send the datasheet and the certification schedule for your market.