The Additel ADT681IS-20-GP36K-BAR-AF-DL is a high-accuracy, intrinsically safe digital pressure gauge with a built-in barometer and data logging capabilities. It is designed for use in hazardous areas where explosive gases or vapors may be present. The ADT681IS-20-GP36K-BAR-AF-DL is unique in that it offers a combination of features that are not available in other intrinsically safe digital pressure gauges on the market. These features include: High accuracy: The ADT681IS-20-GP36K-BAR-AF-DL has an accuracy of ±0.05% of reading, which is significantly better than the accuracy of most other intrinsically safe digital pressure gauges. Built-in barometer: The ADT681IS-20-GP36K-BAR-AF-DL has a built-in barometer that allows it to measure both absolute and gauge pressure. This is a valuable feature for applications where it is important to measure both types of pressure.* Data logging capabilities: The ADT681IS-20-GP36K-BAR-AF-DL can store up to 20,000 data points, which can be downloaded to a computer for analysis. This feature is useful for applications where it is important to track pressure data over time.