IN THIS ARTICLE:
- Why is it Important to Calculate Syringe Pump Pressure?
- Factors that Determine the Pressure Generated
- How To Calculate Syringe Pump Pressure
- Examples of How to Calculate Syringe Pump Pressure
- Syringe library tables
UNDERSTANDING SYRINGE PUMP PRESSURE.
- Syringe pump pressure depends on three parameters:
- Linear force the syringe pump
- Number of channels on the syringe pump (number of syringes)
- Syringe internal diameter
- Syringe Pump Pressure is the pump’s linear force divided by the syringe’s inner area. If more than one syringe is used, the pump’s linear force must be divided by the number of syringes used with the pump.
Why is it Important to Calculate Syringe Pump Pressure?
To guarantee that the fluid is delivered precisely at the intended pressure and flow rate.
This monitoring helps maintain accuracy and consistency in the delivery process, vital for various applications across industries such as healthcare, research, and manufacturing.
Factors that Determine the Pressure Generated
Syringe pump pressure calculation involves three main factors that determine the pressure generated by the pump.
- The applied force of the pump. It is measured in pounds and indicates how hard the pump is pushing. This force contributes to the pressure generated, and it depends on the kind of syringe pump you’re using for your application. Each pusher block generates a different amount of force.
- The specific physical properties of the syringe.
- The number of syringes used with your syringe pump.
If you employ numerous syringes with your syringe pump, the pressure isn’t solely determined by the force applied. The aggregate surface area of all syringes also plays a significant role. However, there’s no need for concern – we’ll elucidate this through illustrative examples that will facilitate the calculation of syringe pump pressure. To ensure clarity, we’ll provide examples of single-syringe scenarios and experiments involving multiple syringes.
“Smaller syringes yield notably higher injection pressures than their larger syringes.”
Sometimes, you will see that the pressures calculated might be different from what you experience in practice. That’s because other things are at play, such as the size and length of the tubing used. So, while the calculations provide a guideline, actual pressure could vary.
How To Calculate Syringe Pump Pressure
“Take the linear force of the pump and divide it by the inner area of the syringe.”
You can easily figure out the average pressure for any syringe pump and syringe combo by doing a simple calculation. Just take the linear force of the pump and divide it by the inner area of the syringe. Every time you need to calculate, you can use this syringe pump pressure equation:
- F or Pump Linear Force.
“You can find the specific pump linear force in the specifications of your syringe pump.”
There is a great variety of syringe pumps in the market, and each pusher block within these pumps generates a distinct level of force. You can find the specific pump linear force in the specifications of your syringe pump. Remember that the number of syringes used in the pump must be considered to calculate the linear force.
To make it easier for you, below is a compilation of the max linear force of Chemyx syringe pumps:
| Syringe Pumps | Linear force in lbf (pound-force) |
|---|---|
| Fusion 100 | 35 |
| Fusion 100-X | 55 |
| Fusion 200 | 50 |
| Fusion 200-X | 65 |
| Fusion 4000 | 75 |
| Fusion 4000-X | 95 |
| Fusion 6000 | 500 |
| Fusion 6000-X | 700 |
- d or syringe diameter.
“This value is accessible in syringe selection guides tailored to the respective syringe size and model.”
This value will depend on the size of the syringe you are using for your application. It is the total surface area of the syringe in square inches. Generally, when the syringe barrel possesses a larger diameter, the resultant psi during flushing diminishes, or we could say to understand clearly that smaller syringes yield notably higher injection pressures than their larger syringes. Syringe diameter value is accessible in syringe selection guides tailored to the respective syringe size and model.
Examples of How to Calculate Syringe Pump Pressure
- When using only one syringe:
Imagine this scenario: you’re using a syringe pump for your application, and you need to determine the pressure it generates. Given that your experiment demands elevated pressure levels, you’ve opted for the Fusion 6000-X High-Pressure Syringe Pump by Chemyx. For this endeavor, a 100 mL stainless steel syringe was selected. Upon consulting the syringe properties, you observe that this syringe has an inner diameter of 1.37 inches. Importantly, your experiment involves a single syringe. The syringe pump’s linear force is 700 lbf in this case.
If we gathered all the information needed for our calculations:
Linear force: 700 lbf
Syringe: One syringe of 100 mL with an inner diameter of 1.37 in
π = 3.14
With all the necessary information at hand, we are now ready to perform the calculations. By plugging the respective values into the equation, we can determine the syringe pump pressure:
- More than one syringe
“The pump’s linear force will need to be divided by the number of syringes used on the pump.”
Imagine you are in a laboratory setting where your task involves employing the Fusion 200 syringe pump in conjunction with a 10-channel Syringe Holder Rack provided by Chemyx. The syringes of choice have an inner diameter of 0.40 inches. As reiterated earlier, you’re using a total of 10 syringes, while the linear force attributed to this syringe pump is 50 lbf.
If we gathered all the information needed for our calculations:
Linear force: 50 lbf
Syringe: 10 syringes with an inner diameter of 0.4 in
π = 3.14
By plugging the respective values into the equation, we can determine the syringe pump pressure:
Finally, let’s go over another illustrative example. Imagine now that you are using the Chemyx Syringe Pump Model: Fusion 6000 with a 4-Channel Metal Syringe Holder Rack that has a linear force of 500 lbf:
Linear force: 500 lbf
Syringe: 4 syringes with an inner diameter of 1.37 in
π = 3.14
Again, we just have to plug the values and we will obtain the syringe pump pressure.
