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
4
1.1
Description
The Smart® IsoDry® Nitro-Watch™ interface includes four physical buttons (ESC, Up arrow, Down arrow, SET) to
navigate and change data with an eight character 14-segment LED display. The connectors for the system are:
-
RH sensor: phone-jack
-
Door Switch: phone-jack
-
Purge Control: phone-jack
-
Data log transfer to thumb drive: USB
LED light status indicator shows data logging and transfer status:
•
LED light is off: there is no activity
•
LED light is blinking red at the user defined interval: the system is logging data
•
LED light is rapidly flashing green: data is being transferred to the USB flash drive from an internal SD card.
•
LED light is rapidly blinking blue: there is no space available on the USB flash drive.
1.2
Operation
The Nitro-Watch™ controller receives the RH/temperature reading from the Nitro-Watch™ RH sensor and displays
current RH%, RH alarm (RH high or RH low alarm), door alarm, and RH% set point. The controller regulates the solenoid
valve by sending an ON/OFF signal to the IsoDry® Dual Purge based on the door, or RH status, determined by the user
settings inputted to the Nitro-Watch™ and Dual Purge.
The humidity sensor is mounted inside the desiccator or glovebox. It uses a fast-response capacitive probe whose
capacitance is proportional to the humidity level. The sensor is capable of measuring humidity over the entire humidity
range, from 0 to 100% RH, with an accuracy of ± 1.5% RH at a temperature of 68 degrees F.
1.3
Part Numbers Covered by this Manual
9500-06A
Smart® IsoDry® Nitro-Watch™ Controller for Desiccator
Cabinets
9500-06A-GB
Smart ® IsoDry® Nitro-Watch™ Controller for Gloveboxes
9500-02B
IsoDry® Nitro-Watch™ Sensor for Desiccator Cabinets
9500-02B-GB
IsoDry® Nitro-Watch™ Sensor for Gloveboxes
Nitro-Watch™ attached to a Desiccator
Nitro-Watch™ attached to a GloveBox