Omega PPP3P User Manual

PPP–3P

Precision Pressure Pump

OMEGA

Operator´s Manual

OPERATING INSTRUCTIONS

IMPORTANT: Read all operating instructions and general operating information

PRODUCING POSITIVE PRESSURE

1) Connect one of the Model PPP-3P’s ports to the

instrument to be calibrated or checked. Use small-diameter tubing as short in length as

possible (this will maximize the pressure adjustment range). An auxiliary port is provided for

100

simultaneous output to a second device, e.g.,

PRODUCING NEGATIVE PRESSURE

1) Perform Step 1 as described above.

-5

-10

2) Turn the brass fine pressure adjustment fully

3) Turn the discharge knob fully clockwise. Do

application of pressure to an instrument or system under test and to a pressure standard to measure the actual pressure output. If the

4) Turn the fine pressure adjustment counter-

auxiliary port is not used, it should be securely plugged.

2) Set the brass fine pressure adjustment knob on the top of the pump to the mid-travel position as indicated by the line cast into the pump body.

3) Turn the black discharge knob on the side of the pump fully clockwise. Do not overtighten.

4) Squeeze the actuating levers to generate pressure. At pressures above 150 psig the levers should be squeezed harder and more quickly at the end of the stroke. Additional force is required to open the discharge valve due to higher line pressure.

5) Use the discharge and fine pressure knobs to

WARNING

Even nominal pressure values can generate extreme force if fitting or tubing failure occurs due to improper installation or usage. Since the Model PPP-3P is capable of generating pressures over 100 psig, it is imperative that all pressure connections and test procedures be done by qualified service personnel, according to standard engineering practices, to prevent possible personal injury or equipment damage.

adjust pressure to the desired level.

GENERAL OPERATING INSTRUCTIONS

before

beginning any test procedures.

clockwise until resistance is felt. Do not overtighten.

not overtighten. clockwise to generate the desired negative

pressure (to -2 psig).

TEMPERATURE CONSIDERATIONS

Since the pressure change of a contained volume of gas is directly proportional to absolute temperature, temperature control is critical when using the Model PPP-3P with any high-resolution measuring device. Tubing should be kept away from heat sources (i.e., lamps, operating electronic equipment, excessive hand contact, etc.) as well as from heat-dissipating structures (i.e., open windows, air conditioning vents, ventilation ducts, etc.) to minimize temperature variations that might induce measurement error.

Air is compressed when the Model PPP-3P’s actuating levers are squeezed. This compression causes some heating of the air as it is forced into the system. Consequently, a noticeable decrease in pressure—caused by the cooling of the newly compressed air—may occur immediately after cessation of pumping.

LUBRICATION

The Model PPP-3P is lubricated at the factory and under normal operating conditions should not require additional lubrication. If lubrication is required, invert the pump and apply two drops of a light-grade machine oil to the piston rod near the base of the pump body. Do not over-oil.

LEAK PREVENTION AND DETECTION

In order to obtain maximum pressure indication stability, leaks must be avoided. It is strongly recommended that either Teflon® tape or commercial pipe sealant be used at all tapered fittings and connections. If Teflon® tape is used, care must be taken that the proper amount is applied. Excessive tape may fray and cause plugging of relief valves, orifices, nozzles, etc. Overuse of pipe sealant may cause similar problems.

External equipment should also be checked carefully for leaks. Process connections, flange bolts, and vents must be tightly closed. Defective gaskets, leaking valves, and damaged diaphragms are all potential sources of leaks.

For detection of very small system leaks, the traditional soap bubble method may not be sufficient. Halogen leak detection devices may be required when using highly sensitive pressure calibration equipment.

Vent

PRESSURE INDICATOR

MODEL 620

ALTEK INDUSTRIES CORP

ROCHESTER, NY 14623 USA

INTRINSICALLY SAFE FOR:

CL I DIV 1 GP A B C AND D CL II DIV 1 GP E F AND G CL III HAZARDOUS LOCATIONS

NONINCENDIVE FOR:

CL I DIV 2 GP A B C AND D

APPROVED

CL II DIV 2 GP F AND G CL III HAZARDOUS LOCATIONS

WHEN USED WITH NO. 216 BATTERY

PRESSUREMODEL 620

OUTPUT RANGE: -2 to 200 psig RESOLUTION: 0.001 psig PRESSURE CONNECTIONS Primary Port: 1/8"-27 NPT Auxiliary Port: 1/8"-27 NPT WEIGHT: 0.87 kg (1.9 lb.)

SPECIFICATIONS

MEDIA COMPATIBILITY: Non-conductive, noncorrosive, instrument-grade clean air or inert gas

CONSTRUCTION: Machined brass pump body, piston; stainless steel piston rod, handles

Differential

Pressure

Transmitter

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