New Zealand-based ammonia sensing equipment manufacturer Photonic Innovations Ltd. has partnered with ammonia refrigeration system supplier Active Refrigeration.  In a sign of increasing demand for ammonia-based refrigeration systems in New Zealand, locally-based ammonia sensing equipment manufacturer Photonic Innovations Ltd. has partnered with another NZ company, ammonia refrigeration system supplier Active Refrigeration, in their first national distribution deal. “It is fine timing. Ammonia’s popularity as a refrigerant has increased dramatically due to its green credentials,” said Dr. Ojas Mahapatra, CEO of Photonic Innovations. Photonic Innovations Ltd. manufactures laser-based ammonia detectors and has recently been encouraged by interest in its products from…