![OPERATING INSTRUCTIONS](/images/new-backgrounds/53387/533873x1.webp)
OPERATING INSTRUCTIONS
IMPORTANT: Read all operating instructions and general operating information before beginning any test procedures.
PRODUCING POSITIVE PRESSURE
PRODUCING NEGATIVE PRESSURE
1) Connect one of the Model
0
50possible (this will maximize the pressure adjust-
ment range). An auxiliary port is provided for
100 | simultaneous output to a second device, e.g., |
| application of pressure to an instrument or |
| system under test and to a pressure standard to |
| measure the actual pressure output. If the |
| auxiliary port is not used, it should be securely |
| plugged. |
| 2) Set the brass fine pressure adjustment knob on |
0
1)Perform Step 1 as described above.
2)Turn the brass fine pressure adjustment fully clockwise until resistance is felt. Do not over- tighten.
3)Turn the discharge knob fully clockwise. Do not overtighten.
4)Turn the fine pressure adjustment counter- clockwise to generate the desired negative pressure (to
| the top of the pump to the |
| 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 le- |
| vers 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 |
| adjust pressure to the desired level. |
WARNING
Even nominal pressure values can generate extreme force if fitting or tubing failure occurs due to improper installation or usage. Since the Model
GENERAL OPERATING INSTRUCTIONS
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
Air is compressed when the Model
LUBRICATION
The Model
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 | LP | HP | PRESSURE INDICATOR |
Differential
Pressure
Transmitter
SPECIFICATIONS
OUTPUT RANGE: -2 to 200 psig
RESOLUTION: 0.001 psig
PRESSURE CONNECTIONS
Primary Port: |
|
Auxiliary Port: |
WEIGHT: 0.87 kg (1.9 lb.)
MEDIA COMPATIBILITY:
CONSTRUCTION: Machined brass pump body, piston; stainless steel piston rod, handles