Specifications

Quick-Start Operating Guide

Humex 2™ Inline Humidification System

Terra Universal, Inc. • TerraUniversal.com • 800 S. Raymond Ave. • Fullerton, CA 92831 • TEL: (714) 578-6000 • FAX: (714) 578-6020

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 & 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 between 30 and 40

psi (use more pressure for larger glove boxes with 4 or more arm ports).

Internal Pressure – Press and hold DOWN (displays in milli-inches of WG).

The Dual Purge System includes a flowmeter, which provides a continuous low-level purge to maintain a

constant positive pressure inside the cabinet.

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.

If continuous purging is not required, close the flowmeter. The Dual Purge System will initiate a purge only when

an air lock door is opened, or when humidity level falls below the set point (if your system includes a Humex 2).

Purge Delay Timer – Press and hold UP and DOWN simultaneously to review the number of seconds the

high-flow purge is active after the internal pressure set point is established. To change this value, see

“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.

3.7 Turn the Dual Purge System ON by placing the power switch in the “up” position. The Humex 2™ LED display

should indicate some humidity level.

NOTE: Allow about 5 minutes for the system to warm up after turning power “ON.”

3.8 Proceed with the Humex 2™ set up and programming procedures detailed in steps 2.1 through 2.16 above.

Make a mistake? No Problem! To reset the system, cut power to the Humex 2™ by turning the Dual Purge System

OFF while in setup mode and restart while holding the SET button.

3.9 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.

3.10 Beeper Silencing: Press any front panel button to silence the beeper during an alarm condition.

The Humex 2™ will now activate high-flow purging whenever the %RH level inside the glove box falls below the

specified set point. Your system is ready for operation.

Operating Tips

• If too much sputtering of water occurs in the process chamber during Humex 2 operation, decrease the water

supply by incrementally closing the pinch valve.