2.0INSTALLATION
QUICK START
Install DV-33D gauge tube in vacuum system (see section 2.4). Ensure system is leak free.
Connect the tube to the DNV-33D power supply/display and apply 115 VAC. Allow 30 minutes for warm-up (see section 3.1).
Set the switch on the DNV-33D to the “OPR” position for normal operation (factory calibration).
Set the switch on the DNV-33D to the “Set A” position. The relay will now be energized when the pressure is less than the set point. The set point LED will be on when the relay is energized. The set point may be set by adjusting the appro- priate potentiometer on the front panel.
Set the switch on the DNV-33D to the “Set B” position. The relay will now be energized when the pressure is less than the set point. The set point LED will be on when the relay is energized. The set point may be set by adjusting the appro- priate potentiometer on the front panel.
Set the switch on the DNV-33D to the “CAL” position. This is to be used when zeroing the gauge with the tube at a pressure less than 0.1 mTorr.
Set the switch on the DNV-33D to the “TEST” position. Use this position to check the DNV-33D and to set the gain for individual tubes.
2.1Panel Mounting
The DNV-33D instrument package can be mounted in a 3-1/16 inch high by 3-5/8 inches wide hole. Secure the gauge with the mounting brackets provided.
2.2 Connect the GaugeTube wire to the gauge as follows:
REAR PANEL | GAUGE TUBE | WIRE COLOR |
“TUBE” | PIN # | |
| | |
A | A | BLACK |
| | |
C | C | WHITE |
| | |
D | D | GREEN |
| | |
2.3Connect other wires to relay contacts and output terminals.
2.4Gauge Tube Installation
Install the gauge tube in a clean, dry vacuum system with the open end pointing down so as to be self-draining should any vapors condense within the tube (See Sec. 5.1). For maximum accuracy, it is recommended that the tube be outgassed in the vacuum system for a minimum of 4 hours.
page 8
