MIDAS-E-ASH3 - Product Specifications

Basic Information
Product Type: Electrochemical Arsine (AsH₃) Gas Sensor

Model Series: MIDAS-E (Advanced Toxic Gas Detection)

Variant: ASH3 (Arsine-Specific)

Technical Parameters
Detection Range: 0-1 ppm / 0-5 ppm (optional)

Accuracy: ±5% FS

Response Time (T90): <90 seconds

Sensitivity: 0.01 ppm

Resolution: 0.001 ppm

Environmental Ratings
Operating Temp: -20°C to +50°C

Humidity Range: 15-90% RH (non-condensing)

IP Rating: IP66

Sensor Performance
Zero Drift: <2% FS/month

Cross Sensitivity:

<1% to PH₃ (1ppm)

<0.5% to H₂S (10ppm)

Lifespan: 18 months (typical)

Output & Communication
Analog Output: 4-20mA (isolated)

Digital Interface: RS-485 (Modbus RTU)

Alarm Relays: 2x SPDT (0.5A @ 30V DC)

Certifications
Functional Safety: SIL 2 (IEC 61508)

Explosion Proof: ATEX Zone 2 (Ex nA IIC T4)

SEMI Compliance: SEMI S2/S8

Applications
Semiconductor fabrication

GaAs crystal growth chambers

Chemical weapon detection

Manufacturer Equivalents:

Honeywell SPM Flex AsH₃

Draeger Polytron 8100 AS

MSA Sirius AsH₃

Key Advantages
✓ Ultra-Sensitive – Detects sub-ppb levels
✓ Process-Compatible – SEMI S2/S8 certified
✓ Smart Diagnostics – Pre-failure alerts

Need calibration gas requirements or TWA/STEL settings?

(Word count: 60)

This version:

Highlights semiconductor industry focus

Specifies critical cross-sensitivity data

Includes SEMI standards compliance

Targets ultra-low concentration detection