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0 AnswersI have a functional PE 1600 FT-IR with a missing sample holder. Kindly offer help on how to get it Thanks
Reply to sdutsinma
20 days ago

Service manual

0 Answers Does anyone have a service manual they could upload or know how to get into service mode?

Reply to david.rodriguez@bcw.edu
20 days ago

about PC HILIC

0 Answers Dear, I want to know more about PC HILIC (ID, length, particle size, particle type, pH range, hardware...). Is this kind of column a polymer-coated packing material or just common silica? I can't find this column on the webside of Shiseido. Could you please tell me how to find the details? Thanks in advance?

Reply to haibin
Shiseido - PC HILIC
RE: Shiseido - PC HILIC
0 Answers 1 of the wash buffer containers is not being recognized(as per user's words), I found 1 container being reported as empty due to a damaged float sensor. But I can't figure out how to remove it and then install a new one.

problem 2, pippette's aren't being ejected, when manually ejected, the system doesn't acknowledge that's it's been removed(I didn't get that far, couldn't figure out how the unit picked up pippette's much less ejected them. it seemed to just pick up tray for washing/drying

Reply to CWalters
21 days ago


Reply to BADAR
PerkinElmer - 5300DV
RE: PerkinElmer - 5300DV
0 Answers The plunger pump is a primary equipment in the hydraulic system. It depends on the plunger reciprocating movement in the cylinder block, so that the volume of the sealing operation chamber changes to complete the oil absorption, pressure oil. Plunger in the cylinder block to reciprocate movement, therefore, it is very large amount of exercise, in the process of work need to bear infinite friction, therefore, the plunger begged high hardness, wear resistance and use life and high precision. Through research, the choice of quenching heat treatment can meet the plunger skill request.

Quenching is a heat treatment skill that heats steel to the critical temperature above Ac3 (subeutectoid steel) or Ac1 (hypereutectoid steel), holds heat for a period of time, makes it all or some austenitized, and then cools it to below Ms (or isothermal near Ms) at a faster rate than the critical cooling rate for martensite (or bainite) modification. Quenching skill is widely used in modern machinery manufacturing industry. The first parts of machinery, especially steel used in automobiles, airplanes, and rockets, are simply quenched.

Inside the machine, all holes of the unit should be covered well. The unit is placed on a foundation with embedded anchor bolts, and a pair of wedge pads are used for correction between the base and the foundation. Calibrate the concentricity of the pump shaft and the motor shaft to allow 0.1mm faults on the outer circle of the coupling road; The vacancy of the two coupling plane shall be ensured to be 2 ~ 4 mm, (small pump to take small value) the vacancy shall be uniform, tolerance 0.3 mm. After connecting the pipe and determining the motor's rolling direction, connect the coupling again and check the concentric shaft again. After 2 ~ 3 hours of practice trial operation of the unit, after final inspection, if there is no adverse phenomenon, the equipment is considered qualified. Check the temperature and oscillation of the bearing in the trial operation process as follows: loosen the coupling shaft, put the horizontal instrument on the pump shaft and the base of the electric oil pump respectively, adjust the wedge cushion, correct the unit level, and properly tighten the anchor bolts to prevent movement. In order to prevent the sundry in the pipeline into the pump, for the pipeline of new equipment, the pump glue should be equipped with filters, the useful section should be greater than the suction pipe section of 2 ~ 3 times.

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Reply to hhm1020
21 days ago

Calculation Error

0 Answers Started getting a "Calculation error" on our machine today. We really don't have a lot of experience with this equipment since it is a loaner from another mill.


Reply to TracyEllis
Bruker AXS - S2 RANGER
RE: Bruker AXS - S2 RANGER
21 days ago


0 AnswersDo you know where I can obtain the software to run the CytoFluor Series 4000 instrument? Thank you.
Reply to Joe Ng
0 Answers High pressure plunger pump use pressure should be in general between 10MPa ~ 100MPa. It belongs to the positive displacement pump, with the help of the volume of the working chamber periodic change to achieve the purpose of liquid transport; The mechanical energy of the prime mover is directly converted into the pressure energy of conveying liquid by the pump; The capacity of the pump only depends on the changing value of the working chamber volume and the changing times in unit time, and theoretically has nothing to do with the discharge pressure.

Reciprocating pump with the help of the reciprocating movement of the piston in the cylinder chamber (or through the diaphragm, bellows and other flexible elements in the chamber of periodic elastic deformation) to make the chamber volume of periodic change. Structurally, the reciprocating pump chamber is separated from the outside by means of a sealing device, through the pump valve (suction valve and discharge valve) and pipeline communication or closure. High pressure plunger pump is a reciprocating pump, belongs to the volume pump, its plunger driven by the eccentric rotation of the pump shaft, reciprocating motion, its suction and discharge valves are one-way valves. When the plunger is pulled out, the pressure in the work room decreases and the outlet valve closes. When the pressure is lower than the inlet valve, the inlet valve opens and the liquid enters. When the plunger is pushed inward, the pressure of the workroom rises and the inlet valve closes. When the pressure is higher than the outlet pressure, the outlet valve opens and the liquid is discharged.

When the shaft drives the cylinder to rotate, the swash plate pulls the plunger out or pushes it back from the cylinder to complete the process of oil absorption and drainage. The oil in the working capacity cavity composed of plunger and cylinder hole is communicated with the suction and discharge Chambers of the pump respectively through the oil distribution pan. The variable mechanism is used to change the inclination Angle of the swash plate. The displacement of the pump can be changed by adjusting the inclination Angle of the swash plate. High-pressure plunger pump feed process after the turn CAM convex part of the past, under the action of spring force, plunger downward movement, fortress of column space (called the oil pump room) produce vacuum, when the column inserting end face on the oil hole on the plunger sleeve, filled with oil in the oil pump diesel by the oil hole in the tao into the pump oil chamber, piston movement to the next check point, the end of the feed. When the camshaft turns to the convex part of the CAM and jacks up the roller body, the plunger spring is compressed, the plunger moves upward, and the fuel is pressurized. Part of the fuel flows back to the body oil chamber of the injection pump through the oil hole.

When the plunger on the top cover of the oil hole on the sleeve edge, because the tolerance clearance of the plunger and barrel is small (0.0015 0.0025 mm) to make the top of the plunger pump oil chamber sealing oil cavity, a plunger continues to rise, pump oil chamber of hydraulic lifts quickly, the oil pressure pump > delivery valve spring force + high pressure oil pipe residual stress, push the oil valve, high pressure diesel by delivery valve into the high pressure oil pipe, through the fuel injector is sprayed into the combustion chamber. During the oil return process of the high pressure plunger pump, the plunger supplies oil upward. When the ramp on the plunger (stop supply side) is connected with the oil return hole on the sleeve, the low-pressure oil circuit of the oil pump chamber communicates with the middle hole, radial hole and the chute of the plunger head. As a result, the oil pressure drops abruptly, and the oil outlet valve closes quickly under the action of the spring force to stop the oil supply.

Then the plunger will go up, and when the CAM's bulge turns around, the plunger will go down again under the action of the spring. This is where the next cycle begins. High pressure plunger pump with a plunger principle is introduced, a high-pressure plunger pump has two one-way valve, and in the opposite direction, the plunger to appear negative pressure in cylinder when one direction, then a check valve to open the liquid be inhaled in cylinder, plunger to another direction, to squeeze the liquid after another one-way valve is opened, drawn into the cylinder's liquid is expelled. Continuous motion in this way of working results in a continuous supply of oil.

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Reply to hhm1020
30 Answers Hello I have two Avanti J25 centrifuges,the old style with the rotary knobs and the led displays, one works fine but the other displays "sys drive" I have swapped all the circuit boards from the good one to the faulty one but errors still there, can anybody help please ? thanks Phil

Reply to optimum
Beckman Coulter - Avanti J-25
RE: Beckman Coulter - Avanti J-25

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