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Installation and Operating Guide
Smart® IsoDry™ Nitro-Watch™
©
Copyright 2021 Terra Universal Inc. All rights reserved. • Document No. 1800-19
Terra Universal, Inc. • TerraUniversal.com • 800 S. Raymond Ave. • Fullerton, CA 92831 • TEL: (714) 578-6000 • FAX: (714) 578-6020
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General Information
The Smart® IsoDry® Nitro-Watch™ senses and displays the relative humidity level (from ambient to 0%) inside a desiccator
or glove box within ±1.5% RH. It operates in tandem with the Dual Purge System and Automatic RB Valve to precisely and
automatically control the flow of nitrogen into the desiccator, or glove box, and maintain a preset humidity level, no matter
how operating conditions may change. The Nitro-Watch™ consists of a humidity sensor and a controller unit. This system
also logs RH, temp, door open/close, purge on/off, and sensor removal/ attachment. The system can log months of data
depending on the logging interval selected, all of which can be downloaded to a USB flash drive.
Note:
This manual focuses on specific setup and operating instructions for the Smart® IsoDry® Nitro-Watch™ Control
system. For installation instructions and general specifications for these products please see below:
Adjust-A-Shelf™ Cabinet or Dual Purge
Doc. #1800-40: Desiccators and RH Controllers
IsoDry® desiccator
Doc. #1788-26 IsoDry® RH Control System
GloveBox
Doc. #1800-42 Series 100 GloveBox
Nitro-Watch™ Sensor
Nitro-Watch™ Controller