Teledyne Marine Instruments 2002 User Manual download pdf (Page 7)

149-072011 Model 2002 Vacuum Gauge Page 7 of 38

2.4. Control Unit Installation

• Environment:

• Indoor use

• Altitude up to 2000 meters

• Operating temperature range from 50 to 400C

• Maximum relative humidity: 80% for temperatures up to 310C decreasing linearly to 50% relative

humidity at 400C

• Installation category II

Panel Mount Instructions:

The control unit can be panel mounted. See detail on page 43. The dimensions of the hole on the panel are

3.62" x 3.62"(92.8mm x 92.8 mm). Slide the neoprene gasket that was shipped with the control unit onto the

case from the back. Slide the controller through the panel cutout. Hold the hardware against the side and

tighten the two screws.

Transducer Cable Attachment:

The threaded connector attaches to the transducer. A finger tight connection is adequate for proper

operation. The 9-pin male “D” connector attaches to the back panel (See Figure 4.2). The transducer cable

connects to the left hand connector when looking at the back.

I/O Cable Attachment:

The mating male plug to the I/O connector is supplied with the unit. An I/O cable can be wired with the 9-

pin female “D” connector to use the analog output, digital alarms or the remote zero functions. The

connector will accept 20 gauge or smaller wire. The pinout is shown in Figure 4.2 (back panel figure). A

detailed description of these pins is given in Section 4.

2.5. Initial Operation

Upon applying power to the control unit a pressure measurement will be given in Torr for nitrogen.

However, it is recommended that the user follow the instructions for zeroing and adjusting the output at

atmospheric pressure in Section 3.4 ("Cal Mode").

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Teledyne Marine Instruments 2002 User Manual Page 7