The Dynagard 25 Series accurately measures O₂ levels using the ZD 21 sensor. Each alarm can be adjusted separately. The alarm point values can be freely adjusted within the detection range of the transmitter.
- Extremely stable sensor responds quickly to any change in O2 concentrations and is unaffected by high exposure to CO₂
- Adjustable alarm points
- On-board relays for external controls
- Fast recovery from barometric pressure, humidity or temperature
- Minimal signal loss over time reduces the need for frequent calibration
- Local display, horn and strobe
The ZD 21 is a powerful transmitter for the detection of oxygen, using an amperometric sensor based on an electrochemical zirconium dioxide oxygen pump cell. The detection principle features a good longterm stability and selectivity.
The controller provides four voltage-free relays for the three alarms and one fault warning. The relays may be used to control additional alarm devices like lights or horns. They can even prompt specific counter measures to prevent or limit dangers from gases or vapors.
Ordering information: For available accessories, calibration kits or additional information, contact your Avantor representative and see the attached datasheet and manual.