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GfG ZD 21 Fixed Detector with Internal Oxygen O2
GfG ZD 21 Oxygen O2 Fixed Transmitter / Detector with 5 year life

Base Price: $1,195.00

Availability: Usually Ships in 1 to 2 Weeks

ZD 21 Detector


GfG ZD 21 Fixed Transmitter with Internal Oxygen Sensor

GfG Instrumentation ZD 21 Series Fixed Detector with Internal Oxygen Sensor

Low cost long-term solution

A particularly long sensor life makes the ZD 21 a low cost transmitter for oxygen monitoring. The expected lifetime of the sensor is 5 years in continuous operation. A robust aluminum casing protects the sensor and the circuitry from impacts, splashed water, and dirt.

Prevention of oxygen deficiency

The ZD 21 is an "intelligent" transmitter. The comprehensive electronics allow for easy operation and maintenance and also increase operational safety and accuracy. In less than 2 seconds the ZD 21 responds to oxygen escaping from a leak. This extremely short response time allows the time to take measures to prevent considerable damage.

  • Extremely stable Oxygen O2 sensor lasts 5 years
  • Fast response
  • No influences from pressure, humidity, or temperature
  • No damage from carbon dioxide CO2
  • Signal Output 0.2 to 1mA or 4-20mA
  • Long lasting Zirconia (ZD) Oxygen Sensor
  • Casing Protection IP54
  • Humidity 0-99%RH non-condensing
  • Response Time T90 less than 2 seconds

Average Customer Review: Average Customer Review: 5 of 5 5 of 5 Total Reviews: 1 Write a review.

  0 of 0 people found the following review helpful:
5 of 5 Great monitor October 31, 2013
Reviewer: JC Curtis from El Segundo, CA USA  
Working around LN2 requires us to have Oxygen sensors all over.  Our old Sierra Monitors O2 monitors would always give us false alarms and problems.  After installing these ZD units, we don't have false alarms anymore.  No more wake up calls at 2am for an O2 alarm.  Would highly recommend!

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