Special Heater Using a Platinum Heating Element

We can also manufacture heating elements using platinum or platinum alloy (platinum with 13% rhodium). Since platinum can be used up to temperatures of 3092ºF (1700ºC) even in air, hot air exceeding 1832°F (1000ºC) can be obtained if platinum is used for heating element of hot air heaters.

However, it cannot be used for a long time at such temperatures. The melting point of platinum is 482ºF (250ºC) higher compared to 2732ºF (1500°C) of the Kanthal alloy, only a thin wire can be used as the cost of platinum is high. It is considered that the difference with Kanthal alloy is not significant since an oxidation film is not formed.

Platinum heaters are better suited for applications requiring cleanliness than for applications of ultra-high temperature. For temperatures up to 932ºF (500ºC), the clean heater (CLH) is superior in terms of cleanliness and cost, and platinum heaters are suitable for clean heating above that temperature. Platinum heaters can be manufactured in compact sizes and are suitable when there are limitations on the size.

In addition to hot air heaters, if you require heaters using platinum, we will accept it as a special order.

[Related information] Heater characteristics | Hot air calculation | Heater service life | Temperature distribution | Pressure resistance | Heat efficiency | No-air power supply | Air source | Quality regulation | Thermocouple - temperature measurement | Controller Print Price

Characteristics data of platinum heating element air heater PAH100v-800w/10AH/+S

Lesser the air flow rate, hot air of 1832ºF (1000ºC) can be obtained with lower heating element temperature. That is, service life of the heater increases.

When heating at high temperature with a PAH heater (100v-800w), using a flow rate of approximately 2.64 gal/min (10 L/min) is preferred. The voltage will be approximately 60 V.

There are many uncertainties regarding relationship between the heating element temperature and service life as data is insufficient, refer to the figure below for the thumb rule. Service life becomes extremely short with increase in the heating element temperature, and measures must be taken so that the duration of high temperature hot air is minimized when PAH is used for high temperature heating. For example, even if an object has to be heated to a high temperature, instead of blowing hot air of high-temperature from the beginning, heat with low-temperature hot air followed by hot air of high temperature at the final stage to use the unit for a long time.

Characteristics data of platinum heating element air heater PAH50v-350w/10AH/+S"