MIDAS-E-TEO Honeywell Gas Sensor Cartridge | TEOS Detection Module

Precision Monitoring for TEOS Applications: MIDAS-E-TEO

The MIDAS-E-TEO is a specialized 3-electrode electrochemical gas sensor cartridge engineered for the precise detection of Tetra-Ethyl-Ortho-Silicate (TEOS). Designed for integration with the Honeywell MIDAS series, this cartridge ensures stable performance in semiconductor fabrication and chemical vapor deposition (CVD) environments.

Technical Performance Specifications

• Part Number: MIDAS-E-TEO
• Measurement Range: 0 to 40 ppm (TEOS)
• Detection Threshold: 3.6 ppm (Lower Detection Limit)
• Response Metrics: t62.5 ≤ 25 seconds
• Sensor Life Expectancy: ≥ 24 months (nominal operating conditions)
• Accuracy Metrics: Linearity within < 10%; Repeatability within < 2%
• Operational Environment: 0°C to +40°C; 10% to 90% RH non-condensing

Global PLC Spare HUB's Insight

The MIDAS-E-TEO is critical for facilities managing CVD processes. We observe that stable thermal management is the primary factor in extending the life of these electrochemical cells. It is uniquely suited for semiconductor cleanrooms, atmospheric monitoring systems, and hazardous gas storage areas where TEOS vapor concentration tracking is essential for safety compliance.

Logistics, Warranty, & Support

• Dispatch: Guaranteed processing within 24-48 hours.
• Logistics: Secure shipping via FedEx, UPS, and DHL to your site.
• Commitment: Full 12-month factory warranty on all sensor cartridges.

Diagnostic Capability & Setup

The MIDAS-E-TEO utilizes a proprietary 3-electrode design that provides distinct signal signatures for drift monitoring. Users can conduct bump tests using Ethylene Oxide (ETO) calibration gas to verify sensitivity. Its fast warm-up time of under 10 minutes ensures rapid system availability after maintenance cycles.

Professional FAQ & Selection Guide

Question: Why is Ethylene Oxide (ETO) used as the calibration gas for the TEOS sensor?

Answer: ETO acts as the cross-sensitive reference gas for the MIDAS-E-TEO chemistry. Utilizing this specific gas provides the most reliable verification of the electrochemical cell's sensitivity and response time.

Question: How does high relative humidity impact the readings?

Answer: While the zero reading is unaffected by humidity, the sensitivity may drift at a rate of < 1% per % RH. Ensure your environmental control systems are active for the best accuracy.

Question: Is there a specific storage protocol for unused cartridges?

Answer: Yes. Always store in a climate-controlled environment between +5°C and +25°C. Excessive heat will drastically reduce the 24-month lifespan.

Question: My sensor is showing high drift; what is the first check?

Answer: First, ensure the operating pressure is stable within 90-110 kPa. If pressure is correct, check if the calibration interval has exceeded the recommended frequency.

Question: Selection Guide: When should I replace the cartridge before the 24-month limit?

Answer: If your bump test results consistently fail to hit the required baseline despite repeated ETO exposure, or if the "Long Term Drift" exceeds the < 5% threshold, immediate replacement is advised to ensure worker safety.

Tags