Minimum Computer Requirements - Teledyne Tekmar Versa User Manual

Table of Contents

2. Gas pressure at the source must be high enough to:

• Allow at least a 65 psi pressure drop at every pressure regulator.

• Travel the distance from the source to the Versa.

• Provide the required gas pressure at the Versa. Operation of the Versa requires

pressurize gas at an incoming (supply) pressure of 45 to 140 psig.

3. If the tubing that supplies the gas depends on the maximum pressure drop allowable for your setup:

• If the pressurize gas supply is close to the Versa, use the pre-installed 1/8" blue tubing.

• If any of the following circumstances are present, it may be necessary to reduce the pressure by using 1/4"

tubing to connect to the pre-installed 1/8" blue tubing:

a. Lengths greater than 15' .

b. A single source supplies several units.

c. A single source is subject to high demand for gas.

4. Make sure the gas supply tubing lengths are adequate. Be generous when cutting lengths of tubing for local

supply lines. A relatively long coil of tubing between the supply and the Versa allows you to move the unit without

disconnecting the plumbing. If necessary, additional tubing can be added to increase the length.

5. Make sure the gas line fittings and regulators are the correct size and type. Consult your local gas supplier for the

proper type and size of cylinder valves. Select compatible pressure regulators based on the required valves. Keep

these considerations in mind:

• Use good quality pressure regulators with stainless steel diaphragms. The regulators reduce the high source

pressures to the Versa. Teledyne Tekmar recommends using a single, two-stage regulator rather than two

single-stage pressure regulators to meet the Versa's pressure specifications.

• On/Off valves, while not essential, are very useful when mounted on the outlet fitting of a two-stage regulator.

• If pipe thread connections are required in your gas supply lines, seal them with instrument-grade Teflon® tape.