Commercial steam ovens demand sensors that can withstand high temperatures (up to 250°C/482°F) and saturated humidity. The MF58 series glass‑encapsulated NTC from SHENZHEN HENQYI provides a hermetic seal that prevents moisture ingress, ensuring:
- 1. Extreme Durability: High insulation resistance (500 MΩ) and dielectric strength (1500V) protect against short circuits in steaming modes.
- 2. Multimodal Stability: A wide operating range (-55°C to +250°C)/(-67°F to 482°F) allows one sensor to manage everything from low‑temp fermentation to high‑temp sterilization.
- 3. Rapid Response: A thermal time constant of ~12 seconds enables precise PID control, preventing temperature overshoot during rapid mode switching.
The Thermal & Moisture Challenge in Professional Kitchens
Modern commercial ovens are multifunctional powerhouses, switching rapidly between fermentation (~35°C/95°F), steaming (~95°C/203°F), and high‑temperature sterilization (up to 250°C/482°F). This environment filled with saturated steam and constant condensation is lethal to standard sensors.
- The Failure Point: Conventional epoxy‑coated thermistors often suffer from moisture penetration at the lead interface, leading to resistance drift and system failure.
- The Impact: Compromised accuracy can ruin food consistency or, worse, create safety risks during high‑pressure cooking.
Glass Encapsulation: The Ultimate Moisture Barrier
SHENZHEN HENQYI's MF58 series solves these issues through high‑integrity glass encapsulation.
- Hermetic Protection: The sensing element is fully shielded from moisture, ensuring stable performance in 100% humidity.
- Operational Excellence:
- Insulation Resistance: 500 MΩ at 500V DC.
- Thermal Resilience: After 1,000 hours at 250°C/482°F, resistance drift remains within a remarkable 2%.
- Endurance: Capable of withstanding up to 100,000 high‑low temperature cycles.
Fast Response for Precise PID Control
Cooking consistency depends on how fast a sensor reacts to change. The MF58 features a 12‑second thermal time constant, allowing the oven’s control system to:
- Detect rapid heat spikes during startup.
- Transition smoothly from full‑power heating to stable PID modulation.
- Eliminate temperature "overshoot," protecting delicate fermented dough and high‑end proteins alike.
Engineered for Industrial Reliability
Beyond steam ovens, the MF58 is a versatile solution for sterilization equipment and industrial heating. Its reliability is backed by global certifications, including UL, TÜV, CQC, and the stringent AEC-Q200 automotive-grade qualification. In the demanding world of commercial food service, the smallest components often dictate the lifespan of the entire machine. By choosing the MF58 glass-encapsulated NTC, designers ensure their equipment remains safe, accurate, and durable against the harshest combinations of heat and steam.