MIDAS-E-NH3 Honeywell Ammonia Sensor Cartridge | High Sensitivity NH3

Engineered for critical gas detection in industrial settings. The Honeywell MIDAS-E-NH3 cartridge delivers fast, reliable ammonia monitoring with electrochemical precision. It suits safety systems that demand low detection limits and long service life.

Technical Specifications

• Sensor technology: 3-electrode electrochemical cell
• Measuring range: 0 – 100 ppm NH3
• Lower detection limit: 9 ppm
• Minimum alarm set point: 12 ppm
• Resolution: 0.5 ppm
• Linearity: < ± 2% of measured value
• Repeatability: < ± 5% of measured value
• Response time (t62.5): ≤ 10 seconds
• Warm-up time: < 10 minutes
• Operating temperature: 0°C to +40°C (32°F to 104°F)
• Temperature effect (zero): < ± 0.1 ppm / °C
• Temperature effect (sensitivity): < ± 0.2% of measured value / °C
• Operating humidity: 10 – 90% RH, no zero effect
• Humidity effect (sensitivity): < ± 0.1% of measured value / % RH
• Operating pressure: 90 – 110 kPa
• Long-term drift (sensitivity): < 3% of measured value / 6 months
• Storage temperature: +5°C to +25°C (41°F to 77°F)
• Sensor cartridge life expectancy: ≥ 24 months under typical conditions
• Calibration / bump test gas: Ammonia (NH3)

Environmental Immunity & Robustness

• CE marked for total immunity to radio frequency interference
• TempraSure™ temperature compensation technology ensures stable readings
• Reflex® sensor health check improves safety and uptime
• No effect from position in typical applications

Compatibility & Integration

• Direct fit for Midas gas detectors with smart cartridge interface
• On-board flash memory stores calibration data — no recalibration after swap
• Modbus/TCP Ethernet for easy connection to control and alarm systems
• Compatible with optional Midas Pyrolyzer Module (connects to any Midas detector)
• Works with PoE (Power over Ethernet) infrastructure
• Keypad interface and remote web browser interface available on host detector

Installation & Commissioning

• Plug the cartridge into a compatible Midas detector. The system reads calibration data automatically.
• No manual recalibration needed — the e-Calibration certificate travels with the cartridge.
• Allow < 10 minutes warm-up before taking critical readings.
• Connect alarm relays (Form C) for Alarm 1, Alarm 2, and Fault on the host detector.
• Use the bright LCD and icon-driven menu for quick status checks.
• Event logging stores sensor history for review.

Calibration & Maintenance Ease

• Smart cartridge design enables easy interchangeability without recalibration.
• e-Calibration certificate stored on board — reduces downtime and human error.
• Bump test with ammonia gas as needed. No complex disassembly.
• Password-protected menu levels preserve system integrity.
• Integrated flash memory keeps calibration data safe during cartridge swap.

Certifications & Compliance

• CE marked — meets EU electromagnetic compatibility standards.
• Robust extractive pump system (2-year lifetime) supports sampling up to 100 ft.
• Over 35 gases available in the MIDAS family, all with extended 2-year warranty.

Package Contents & Warranty

• 1 × MIDAS-E-NH3 sensor cartridge
• e-Calibration certificate (on-board memory)
• Quick start guide (digital or printed)
• Warranty: 12 months from date of shipment
• Dispatch: 12–24 hours after order confirmation
• Shipping: FedEx, UPS, DHL — trackable worldwide

Expert Review & Manager’s Insight

Expert Review: The MIDAS-E-NH3 stands out for its 0.5 ppm resolution and 9 ppm lower detection limit. Response time under 10 seconds is excellent for safety-critical loops. The on-board calibration memory removes a major pain point during sensor replacement. The CE immunity to RFI adds confidence in electrically noisy plants.

Manager’s Insight: From a maintenance planning view, the 24-month life expectancy and 12-month warranty align well with annual shutdown cycles. The smart cartridge cuts commissioning time by up to 30%. Choose this cartridge when you need low-level ammonia detection without frequent calibration.

Ideal Equipment & Application Scenarios

• Midas gas detectors — direct replacement or new installation
• Cold storage and refrigeration plants (ammonia refrigerant leak detection)
• Wastewater treatment facilities — ammonia monitoring in aeration zones
• Chemical and petrochemical plants — process leak detection
• Fertilizer production and storage areas
• Industrial HVAC and building automation for ammonia safety

Frequently Asked Questions (FAQ)

Does the cartridge need recalibration after replacement?

No. The integrated flash memory stores the e-Calibration certificate. The host detector reads the data automatically.

What is the lowest ammonia concentration this sensor can detect?

The lower detection limit is 9 ppm. The resolution is 0.5 ppm, so you can track small changes above that level.

Can I use this cartridge in cold environments?

Yes. The operating temperature range is 0°C to +40°C. TempraSure™ compensation keeps readings stable.

How fast does the sensor respond to ammonia leaks?

Response time (t62.5) is ≤ 10 seconds. Warm-up takes under 10 minutes.

What shipping methods do you offer and how fast?

Orders ship within 12–24 hours. We use FedEx, UPS, and DHL for reliable worldwide delivery.

I am new to gas detection. Which sensor should I pick for ammonia?

The MIDAS-E-NH3 is the right choice for low-level ammonia monitoring. It offers high sensitivity and a 0–100 ppm range. For higher concentrations or different gases, review the MIDAS family or contact our team.

What does the warranty cover?

The 12-month warranty covers manufacturing defects. It does not cover damage from misuse or incorrect calibration gases.

Purchase Guidance

• Verify your host detector is a Midas series unit with smart cartridge support.
• Check that your expected ammonia levels fall within the 0–100 ppm range. For trace levels below 9 ppm, consider a different sensor.
• Order spare cartridges to cover planned maintenance — 24-month life expectancy means one cartridge per two years per detector in typical use.
• Confirm your facility has proper ventilation and gas handling procedures for ammonia bump testing.
• Contact us for volume pricing or technical selection help: sales@powergearx.com or WhatsApp.

Copyright © 2026 Powergear X Automation Limited. All rights reserved.
Original Source: https://www.powergearx.com/