Start with the process, not only the heater shape
For corrosive liquid heating, the same heater shape may require different materials and construction depending on the chemical medium, concentration, operating temperature and tank conditions.
A useful RFQ should help the supplier understand the process first, then confirm the heater configuration.
Information to send
Partial information is fine. A photo or nameplate can be enough to begin the review, especially for replacement parts.
- Chemical medium and concentration
- Working and maximum temperature
- Voltage, phase and power
- Tank dimensions and liquid depth
- Immersion length and overall dimensions
- Mounting method and terminal configuration
- Existing heater photo, drawing or nameplate
Material selection needs confirmation
PTFE/PFA, titanium, quartz and stainless steel heaters each have different application limits. Material selection should be reviewed against the actual chemical composition, concentration, temperature and watt density.