Australia's High Commissioner to PNG, Bruce Davis, said the initial deployment would assist the Australian military with its response.
PNG prime minister James Marape had earlier offered to send 1000 soldiers and firefighters.
Vanuatu has also come to Australia's aid, donating $US175,000 to the bushfire recovery effort.
On Thursday, Australian prime minister Scott Morrison thanked PNG, Vanuatu and Fiji for their support, calling it overwhelming.
Palau's president has also written to Mr Morrison to offer support.