Minox-I-Intrinsically-Safe-Oxygen-transmitter

Electrochemical Galvanic Fuel Cell Oxygen Transmitter for Gas Generation Industries

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The Minox i Galvanic Fuel Cell Oxygen Transmitter is a highly reliable and cost effective, 2-wire, loop-powered transmitter with a 4-20 mA output.
With a choice of process connections for direct insert or external mounting, the Minox i can be installed in the process or on a sample panel. Using different electrochemical sensing technologies, measurement accuracy and stability are combined with long sensor life in many applications.

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From ^$ 3,282.00

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2 Variations available

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Data Sheet

Product Overview

Accuracy ± 0.03 %
Accuracy Detail +/- 0.03 % @ 1 %
Applications Chemical Refineries, Gases, Pharmaceutical
Cable Length 1 m
Diameter 1 59 mm
Electrical Output 4 to 20 mA
Enclosure Ratings IP66
Flow Rate Note Flow-through / extractive: 100 to 500 ml/min (250 ml/min optimal) in a vented atmosphere Direct insertion: Up to 6 m/s
Gas Measurement Range 0 to 25 %
Housing Material 316 Stainless Steel
Lifetime up to 18 mo
Operating Pressure, Max 1100 mBar
Operating Pressure, Min 900 mBar
Operating Temperature, Max 45 °C
Operating Temperature, Min 5 °C
Resolution 0.0001
Sensitivity 0.0005
Sensor Type Electrochemical
Series ID Minox-I-Intrinsically-Safe-Oxygen-transmitter
Shelf Life 6 months
Supply Power Type DC
Supply Voltage 24 Vdc
Weight 800 g

Supported Applications

The Minox i Oxygen Transmitter is an intrinsically safe (I.S), 2-wire, loop-powered device designed to measure oxygen concentration in various industrial processes. It features proven sensor technology for accurate O₂ measurement in demanding applications and hazardous environments. The transmitter supports both electrochemical and solid-state sensor technologies.

Documented application contexts include:

Hazardous area installations requiring intrinsic safety
OEM integration via compact footprint and industry-standard electrical plugs
Gases, vapors, and clean liquids media compatibility (per manual)
Ventilated atmosphere flow-through or extractive sampling
Direct insertion applications with velocities up to 6 m/s

Operating Conditions & Performance

The series offers multiple measurement ranges depending on the selected sensor type:

Solid-state (OC-92): 0...25 % O₂
Electrochemical (%) (OC-90): 0...25 % O₂
Electrochemical (ppm) (OC-60, OC-69): 0...10 ppmv, 0...100 ppmv, or 0...1000 ppmv

Accuracy varies by range and sensor type as defined in the specification table:

10 ppm: +/- 0.5 ppm
100 ppm: +/- 1 ppm
1000 ppm: +/- 3 ppm @ 100 ppm
25 % range: +/- 0.03 % @ 1 %

Operating temperature ranges differ by sensor technology:

Solid-state (OC-92): -20 °C...+50 °C (-4 °F...+122 °F)
Electrochemical (%) and ppm: +5 °C...+45 °C (+31 °F...+113 °F) or -10 °C...+45 °C (+14 °F...+113 °F) for CO2 gases
Ambient temperature limit for hazardous area certification: -20°C ≤ Ta ≤ +55°C (IECEx, ATEX)

Response time is < 15 seconds @ 25 °C (77 °F) within the selected range. The device operates at a pressure of 900...1100 mBarabs and supports humidity levels up to 0...95 %rh non-condensing.

Configuration Options

The Minox i series is configurable across several dimensions:

Sensor Types: Solid-state (S-S), Electrochemical %, and Electrochemical ppm sensors are available options.
Process Connections: Flow-through (1/8" NPT), KF40 flange, or Tri-clamp connections.
Housing Material: 316 Stainless steel with IP66 (NEMA4) ingress protection.
Electrical Interface: Industry standard M12 connector; output signal is 4...20 mA loop-powered.
Power Supply: Requires 24 V DC +/- 10 % with a suitable I.S barrier.

Hazardous area certifications include IECEx (Ex ia IIC T4 Ga), ATEX (Ex ia IIC T4 Ga, Ex ia IIIC T200°C Da), cQPSus (Class 1 Zone 0/Zone 20), and UKEX/JPN Ex classifications.

Key Product Differences

Differences between sensor families are documented as follows:

Solid-state (OC-92): Measures 0...25 % O₂ with a lower detection limit of 0.05 %. Life expectancy is up to 2 years; shelf life is up to 12 months.
Electrochemical (%) (OC-90): Measures 0...25 % O₂. Life expectancy is up to 18 months; shelf life is up to 6 months.
Electrochemical (ppm) (OC-60, OC-69): Measures low-level oxygen in ppmv ranges. Output resolution for CO2 gases is 1 ppmv with a lower detection limit of 1 ppmv. Life expectancy is up to 12 months; shelf life is up to 3 months.
Dimensions: Overall length varies by connection type: Flow-through (%) measures 129 mm, Flow-through (ppm) measures 100 mm, while KF40 and Tri-clamp versions measure 118 mm. Width is consistently 59 mm across all variants.