Altek Model 628 Handheld Pressure Vacuum Pump Data Sheet User Manual

							ALTEK DATA SHEET
ALTEK INDUSTRIES CORP
35 Vantage Point Drive Rochester, New York  14624  U.S.A.
(716) 349-3500 • Fax: (716) 349-3510
E-Mail: [email protected] • http://www.altekcalibrators.com
A TRANSMATION COMPANY
SPECIFICATIONS
GENERAL DESCRIPTION
628
See Data Sheet 620 for Pressure Indicator
PRECISION PRESSURE PUMP
MODEL 628
Pressure connections are made through two 1/8 NPT
internally threaded fittings. Compatible media are any
non-conductive, non-corrosive, instrument-grade clean
air or inert gas.
The pump’s small size and sqeeze-action mechanism
permit easy, one-handed operation at any angle.
Although the unit is lightweight (less than two pounds),
it is ruggedly constructed to withstand typical field use.
The pump body and piston are machined brass, and
the valve stem, piston rod, and handles are stainless
steel. 
  Model 628’s simple design and quality construc-
tion ensure a long service life with virtually no maintenance
. Generate pressure where you need it with Altek’s Model
628 Precision Pressure Pump. Generate values from
-2 to 100 psig, with a fine adjustment vernier providing
output resolution to 0.001 psig. Use it independently or
in conjunction with ALTEK’s Model 620 pressure indi-
cator, forming a convenient source/indicator in the 20
psig or 100 psig range.
Dual output ports allow simultaneous pressure appli-
cation to two devices.  For example, connect one port
to the Model 620—providing digital verification of the
generated pressure—and the second port to the
device being checked or calibrated. • PORTABLE PRESSURE SOURCE
Generates from -2 to 100 psig
• COARSE AND FINE  ADJUSTMENTS
Provide resolution to 0.001 psig
• DUAL OUTPUT PORTS
Simultaneous connection to two devices
• CONVENIENT, ONE-HANDED OPERATION
Functions at any angle
OUTPUT RANGE:  -2 to 100 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.)MEDIA COMPATIBILITY:  Non-conductive, non-
corrosive, instrument-grade clean air or inert gas
CONSTRUCTION:  Machined brass pump body,
piston; stainless steel piston rod, handles 
						

							GENERAL OPERATING INSTRUCTIONS
OPERATING INSTRUCTIONS
IMPORTANT: Read all operating instructions and general operating information before beginning any test procedures.
© September 1998 Altek Industries Corp Rochester, NY 14624 USA
      100798-902 REV:A
ORDERING INFORMATIONModel 628 Precision Pressure Pump             Model 628
OPTIONAL ACCESSORIESCarrying Case               09-3783
     Holds Model 628 Pump and Model 620  Pressure Indicator
AVAILABLE FROM: PRODUCING NEGATIVE PRESSURE
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 -2 psig).
WARNING
Even nominal pressure values can generate
extreme force if fitting or tubing failure occurs due
to improper installation or usage.  Since the Model
628 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.
PRODUCING POSITIVE PRESSURE
1) Connect one of the Model 628’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 adjust-
ment range). An auxiliary port is provided for
simultaneous output to a second device, e.g.,
application of pressure to an instrument or
system under test and to a Model 620 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 to
the mid-travel position as indicated by the line
cast into the pump body.
3) Turn the discharge  knob 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.
ONE YEAR WARRANTYThis equipment is guaranteed against defective material and work-
manship  for a period of one year from date of shipment. Claims under
guarantee can be made by returning the equipment prepaid to our
factory. The equipment will be replaced, repaired or adjusted at our
option. The liability of Altek is restricted to that given under our
guarantee. No responsibility is accepted for damage, loss or other
expense incurred through sale or use of our equipment. Under no
condition shall Altek be liable for any special, incidental or consequen-
tial damage.
No pump will be accepted for service unless all process materials
have been completely removed from all components by the customer.
Contaminated pumps will be returned to the customer for proper
cleaning.
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. Since the pressure change of a contained
volume of gas is directly proportional to absolute
temperature, temperature control is critical when
using the Model 628 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 628’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 628 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.
TEMPERATURE CONSIDERATIONS
0
5
10-5
-1 0
LP
HPALTEK INDUSTRIES CORPROCHESTER,  NY  14623   USAFMAPPROVED
PRESSURE INDICATORMODEL 620
PRESSURE MODEL 620WHEN USED WITH NO. 216 BATTERYINTRINSICALLY SAFE FOR:CL I DIV 1 GP A B C AND D
CL II DIV 1 GP E F AND G
CL III HAZARDOUS LOCATIONSNONINCENDIVE FOR:CL I DIV 2 GP A B C AND D
CL II DIV 2 GP F AND G
CL III HAZARDOUS LOCATIONS
Vent
Differential
Pressure
Transmitter
0
50
10 0
OTHER PRODUCTSAltek designs and manufactures fast, accurate instruments for mea-
surement, generation and simulation of virtually every process control
signal. Consult our factory directly or contact your local stocking
representative to order precise, low cost Milliamp Calibrators, Voltage
Sources, Direct Thermocouple Sources, RTD Simulators and Fre-
quency Sources. Altek also produces calibrators for custom ranges
and unique applications. Additional models and ranges are frequently
added to the Altek instrument family to meet all of your critical
calibration requirements. Altek products are made in the USA.