LoG
Displays the current Data Logging Time Interval, in minutes (default: 120)
Press SET again to advance to Normal Run Mode.
Make a mistake? No Problem!
To reset the system, cut power to the NitroWatch by turning the Dual
Purge System OFF while in setup mode and restart while holding the SET button.
7.
Adjust Humidity Set Point: After completing initial programming, press the SET button to view the current % RH set point.
Use the UP/DOWN keys to change this set point.
8.
Beeper Silencing: Press any front panel button to silence the beeper during an alarm condition.
The NitroWatch will now activate high-flow purging whenever the %RH level inside the glove box exceeds the specified set point.
Your system is ready for operation.
The NitroWatch may be placed on any surface near the sealed enclosure. A suggested location is on top of the chamber.
System Set-Up: Series 100 Glove Box (Filtration Module)
Terra glove boxes with filtration modules are shipped ready for installation. Simply connect the equipment to an appropriate power
source and the glove box is ready for operation.
4.0 Operation
Operating the Dual Purge System
1.
Operation Display Functions: After completing initial programming outlined above, press the specified button to view
these operating conditions:
High Purge Bypass – Press and hold SET
In some applications (especially using fine powders in a glove box), you may wish to deactivate the high purge
function, which could create turbulence. To do so, press DOWN while holding SET. To activate high purge, hold UP
while holding SET.
Incoming Line Pressure – Press and hold UP
— displays line pressure in PSI.
Turn the pressure regulator (the round knob on the right side of the Dual Purge control panel) until the pressure gauge
reads 30 psi (for small enclosures) or 40 psi (for larger enclosures).
Internal Pressure – Press and hold DOWN
— displays internal cabinet pressure in milli-inches of Water
Gauge (WG).
The Dual Purge System includes a flowmeter, which provides a continuous low-level purge to maintain a constant
positive pressure inside the cabinet. The flowmeter also ensures an uninterrupted nitrogen flow if power or system
electronics ever fail.
If continuous purging is desired, set the flowmeter so that the pressure gauge reads at least 0.1" WG when the system is
in low purge state. This setting is recommended if you require a very low humidity set point (less than 10%RH) or if access
doors will be opened frequently. Continuous purging will tend to drive the humidity level very low.
If continuous purging is not required, close the flowmeter. The Dual Purge System will initiate a purge only when an access
door is opened, or when humidity level climbs above the set point (if your system includes a NitroWatch).
Purge Timer – Press and hold UP and DOWN
simultaneously to review the number of seconds the high-
flow purge is active internal pressure is restored. To change this value, see “Initial Programming” above.
CAUTION!!!:
Because the high-level purge fed into the system can lead to excessive internal pressure, you must equip a glove
box with an Automatic RB Valve when you install a Dual Purge System.
Operating a Glove Box with the Dual Purge System and NitroWatch
1.
Adjust Humidity Set Point:
After completing initial programming outlined above, press the SET button to view
the current % RH set point. Use the UP/DOWN keys to change this set point.
2.
Beeper Silencing:
Press any front panel button to silence the beeper during an alarm condition.
The NitroWatch will now activate high-flow purging whenever the %RH level inside the glove box exceeds the specified set point.
Your system is ready for operation.
Quick-Start Operating Guide
Series 100 Polymer Glove Box
© Copyright 2004 Terra Universal Inc. All rights reserved.
• Revised December 2004 • Document No. 1800-42
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Terra Universal, Inc. • TerraUniversal.com • 700 N. Harbor Blvd. • Anaheim, CA 92805-2553 • TEL: (714) 526-0100 • FAX: (714) 992-2179
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