P-type Metal Oxide VOC Sensor - VOC-MF1, VOC-PF1, VOC-AF1

Product Specification

P-type Metal Oxide VOC Sensor Description
This sensor is a broadband total VOC detector. When the cost of a PID is not justifiable, this sensor will detect VOCs with 10-50 ppb limit of detection, depending on the VOC.

Unlike common n-type sensors, this metal oxide sensor has a large dynamic range, repeatable response, low humidity response and resistance increases in the presence of most VOCs.

The change in resistance can be converted to an output voltage via a simple electrical circuit. Although the sensor can be used in constant temperature/ voltage mode, best response is achieved when the sensor is cycled between 400°C (sensing temperature) and 525°C (reset temperature). 

Developed over many years, our p-type metal oxide gas sensors offer the following benefits:
• stable baseline
• low humidity sensitivity
• positive response to gases (safer response)

Volatile Organic Compounds (VOCs) detection for low cost IAQ applications

Each sensor type can be supplied in three housings:
• TO-5 metal can, the most common format
• Plastic 6-pin housing - frequently used with other metal oxide gas sensors
• Ex housing - stainless steel 316 housing with UL, CSA, ATEX and IECEx approvals, unique for metal oxides, allowing use in hazardous areas without the need for an IS circuit

P-type Metal Oxide VOC Sensor Housing options

VOC-xF1: no passive filter fitted