Teledyne 3000ZA operating instructions Rear Panel Connections, Gas Connections

Installation 3000ZA

3.3 Rear Panel Connections

Figure 3-3 shows the Model 3000ZA rear panel. There are ports for gas, power, and equipment interface. The Zero In and Span In ports are not included on the standard model but are available as options.

Figure 3-3: Rear Panel of the Model 3000ZA with Span and Zero Ports

3.3.1Gas Connections

Before using this instrument, it should be determined if the unit will be used for pressurized service or vacuum service and low pressure applications. The kit included with the instrument contains two restrictors and a union for 1/4” diameter tubing. Notice that there are two 1-3/4” long, 1/4” diameter restrictors. There is an open end and a closed end with a small circular orifice. The restrictor without the blue sticker is for low pressure applications and vacuum service. For high

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