Smart humidity controller provides automatic setpoint control and data logging
Works in tandem with Terra's Dual Purge to maintain sub-ambient RH set-point down to 0% RH
Connects to a single sensor to monitor, control, and log data inside desiccator cabinet or glovebox
Logs RH, temp, door open/close, purge on/off, and sensor removal/ attachment (door open/close logging not available on IsoDry Cabinets)
Data file is .CSV with ~4MB or 113,000 readings; intervals of 1 SEC, 10 SEC, 1 MIN, 5 MIN, or 1 HR
Terra Universal's Smart® IsoDry® Nitro-Watch™ senses and displays the relative humidity level (from ambient to 0% RH) inside a desiccator or glove box within ±1.5% RH. It operates in tandem with Terra's Dual Purge™ System to precisely and automatically control the flow of nitrogen into a desiccator, glove box, or similar enclosure, and maintains a preset humidity level, no matter how operating conditions may change.
Programmable logic gives user complete control over warning alarms and other system functions.
Automatically controls Dual Purge™ System with high/low flow purges to maintain any relative humidity from 0% RH to room ambient.
Data Logging: Unlike the standard NitroWatch™, the Smart® NitroWatch™ also measures temperature and logs data. This system 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. Plug in USB flash drive and system transfers data in .CSV format. No software required.
Application Note: The NitroWatch sensor provides an exact %RH reading in one chamber only. If multiple RB valves are installed and doors are frequently opened, this reading may not be representative of all chambers. For precise chamber-by-chamber monitoring and control in a desiccator cabinet, select Terra's NitroPlex system. For gloveboxes that require greater accuracy and control, Terra's DewWatch™ measures moisture volumes down to 0.5 PPM. Door open/close data logging not available on IsoDry systems.
Provide Terra with your desired ISO rating. We will tailor the product to meet your rating and supply a certificate of compliance appended to your invoice, to be included in your compliance package. All certificates are archived in Terra's system for quick retrieval.
Dual Purge™ and NitroWatch™ Work Together to Fully Automate RH Control
Terra's Dual Purge™ and NitroWatch™ operate in tandem to precisely and automatically control the flow of nitrogen and maintain a preset humidity level (from ambient to 0% ± 1.5% RH), no matter how operating conditions may change.
Data Logging with 113,000 Readings at User Defined Intervals
Terra's Smart® IsoDry® Nitro-Watch™ logs RH, temp, door open/close, purge on/off, and sensor removal/attachment. The max data file size is roughly 4 MB or 113,000 readings. This is approximately 32 hours of data when logging at 1 second intervals, 2 weeks at 10 second intervals, 6 weeks at 30 second intervals, or 12 weeks at 1 minute intervals. When the system reaches the 4MB limit, data begins to wrap, overwriting oldest data with new.
Dual Purge™ System Diagram
The Dual Purge™ is a variable gas-purge system that switches between "high-flow" and "low-flow" to efficiently and effectively remove and block out moisture and contaminants. Without NitroWatch™, Dual Purge™ does not sense or display RH%. It uses magnetic door sensors to initiate high-flow. When a door is opened or when pressure drops, high-flow activates for a user-specified interval before switching back to an adjustable low-flow setting to conserve nitrogen. With all doors closed, the system maintains an economical "low-flow" to maintain constant positive pressure.
Dual Purge™ and Nitrowatch™ System Diagram
The NitroWatch module connects to a humidity sensor inside the desiccator cabinet and activates the Dual Purge to automatically maintain sub-ambient RH down to 0% RH. When the RH set-point is reached, the system reverts from high-flow to low-flow nitrogen gas to maintain the set-point and conserve nitrogen. When a door is opened, or when the RH climbs above set-point, the system re-activates high-flow to accelerate moisture removal.
Plug & Play Data Logging
Plug in a USB flash drive to your Smart® IsoDry® Nitro-Watch™ to transfer data in .CSV format. No software required.
Highest Standards For Desiccators and Electronic Components
Terra’s desiccator cabinets and RH control systems are designed and built to the highest standards required by defense and semiconductor industries for long-term reliability and protection against damage, injuries, and electrical hazards.
Catalog of CE-Marked Products
Terra offers over 1,700 CE-marked products configured for international voltage requirements
