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Natural Gene Technology Co., Ltd
Pump selection
NegotiableUpdate on 02/28
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Overview
Harvard Instruments offers a wide selection of precision infusion pumps for continuous flow to meet almost all applications, with pump selection guidelines and tables designed to answer most questions about syringes and peristaltic pumps. Please read the information carefully and then contact our technical support department for further assistance. Harvard Instruments has a long history of invention and injection pump production. Natural Gene Technology is the general agent of Harvard, with good prices and excellent services. Natural Gene Technology has engineers trained by manufacturers to serve you.
Product Details
Details introduction:
Pump selection guide
***Choose the appropriate pump based on your application and budget***
Types of pumps: advantages and disadvantages
Injection pump selection guide
Pump with injection function only
injection/Pump with pullback function
push/Pull injection pump
Injection pump application guide
Selection Guide for Peristaltic Pump
***How to calculate your experimental demand pressure***
***Injection pump pressure and flow rate***
By injecting pumps and syringes with small and large flow rates
Pump 11 Pico Plusflow velocity
PHD 22/2000 Hpsiflow velocity
Pump 11 Plusflow velocity
Pump 22flow velocity
PHD ULTRA™flow velocity
Pump 33flow velocity
PHD 22/2000 and PHD 4400 Hpsiflow velocity
***General injector data***
How to choose the right syringe for your application
Syringe specifications
Pressure Unit Conversion Table
Force conversion table
Pump selection - Pump selection - Pump selection - Pump selection - Pump selection - Pump selection
Harvard Instruments offers a wide selection of continuous flow syringes and peristaltic pumps to meet almost all applications, and the syringe pump model has been expanded to include any new * * force * wide range of pumps with flow rates and manufacturers. The following guidelines and tables provide answers to most questions regarding syringes and peristaltic pumps. Please read the information carefully and then contact the technical support department of our Chinese general agent, Natural Gene Technology, for further assistance. Harvard Instruments has a long history of invention and production of infusion pumps. Harvard Instruments1950In the year, the lead screw basic syringe pump was invented, 1980The * * microprocessor pumps introduced in the year have become legendaryPUMP 22Our infusion pumps are so * * that even at low flow rates, they have become the standard for accurate calibration in mass spectrometry analysis and other volume transfer requirements.PHD22/2000Continuous * * with enormous pressure and flow capacitypump 11 plus,Standard for General Laboratory ExperimentsPump 11 Pico PlusSelect pump model components for all peristaltic pumps for percutaneous and small volume injectionsOEMThere is even more market for DIY assembly of extension lines. Our new injection pump,PHD Ultra™ PumpsPumps have simple to complex methods for creating a graphical user touch screen and programming capabilities. These user-friendly infusion pumps have smooth and accurate flow rates over a wide range of flow rates.
Pump selection - Pump selection - Pump selection - Pump selection - Pump selection - Pump selection
Pump selection - Pump selection - Pump selection - Pump selection - Pump selection - Pump selection
Harvard Instruments offers a wide selection of continuous flow syringes and peristaltic pumps to meet almost all applications, and the syringe pump model has been expanded to include any new * * force * wide range of pumps with flow rates and manufacturers. The following guidelines and tables provide answers to most questions regarding syringes and peristaltic pumps. Please read the information carefully and then contact the technical support department of our Chinese general agent, Natural Gene Technology, for further assistance. Harvard Instruments has a long history of invention and production of infusion pumps. Harvard Instruments1950In the year, the lead screw basic syringe pump was invented, 1980The * * microprocessor pumps introduced in the year have become legendaryPUMP 22Our infusion pumps are so * * that even at low flow rates, they have become the standard for accurate calibration in mass spectrometry analysis and other volume transfer requirements.PHD22/2000Continuous * * with enormous pressure and flow capacitypump 11 plus,Standard for General Laboratory ExperimentsPump 11 Pico PlusSelect pump model components for all peristaltic pumps for percutaneous and small volume injectionsOEMThere is even more market for DIY assembly of extension lines. Our new injection pump,PHD Ultra™ PumpsPumps have simple to complex methods for creating a graphical user touch screen and programming capabilities. These user-friendly infusion pumps have smooth and accurate flow rates over a wide range of flow rates.
Pump selection - Pump selection - Pump selection - Pump selection - Pump selection - Pump selection
Choose the appropriate pump based on your application and budget
We are often asked to assist in researching and selecting suitable pumps for various applications. The following list is developed into a guide to help you quickly and easily choose the pump that is suitable for your application. When considering issues with peristaltic pumps or pumps listed in this guide, choose your problem. If your specifications do not seem to meet these pumps, please contact our technical support department for further assistance.
1Briefly outline the advantages and disadvantages of pump types.
2Selection Guide for Injection Pumps.
3Application guide for infusion pumps.
4Selection guide for peristaltic pumps.
Injection pump selection guide
Injection pump issue
What is the scope of your application?
Does this pump require a pullback function in addition to the injection function?
What is the total volume you want to transport?
What is the size of the syringe you are using?
What is the required work flow rate?
How many syringes do you need to use simultaneously?
What is the viscosity of the liquid you are pumping? Refer to the pump for reference
How much experimental pressure do you need? Observe the pressure and flow rate of the infusion pump
Do you need the infusion pump to work continuously for 24 hours?
10． Do you need a programmable pump?
11． Do you need a computer to control the pump?
12． Does the pump require TTL capability? (For example, externally controlled valves or using foot switches)
Pump selection - Pump selection - Pump selection - Pump selection - Pump selection - Pump selection
Pump selection - Pump selection - Pump selection - Pump selection - Pump selection - Pump selection
Characteristics and Technical Parameters
* Dependent on syringe holder
** Effective standard pressure= 50poundorhigh pressure= 66pound
** Effective standard pressure= 50poundorhigh pressure= 66pound
* Dependent on syringe holder
** Effective standard pressure= 50poundorhigh pressure= 66pound
** Effective standard pressure= 50poundorhigh pressure= 66pound
Injection pump application guide
Can be controlled using RS232 or USB computer
Selection Guide for Peristaltic Pump
For each application, there are a wide range of pumps to choose from
Wide flow rate range from ml/hr to L/min
● Multi channel module with multiple 32 channels
● Peristaltic and non peristaltic pumps
Continuous injection and batch mode injection
Harvard Instruments now offers a selection of continuous flow peristaltic pumps and a wide range of other pumps to meet the diverse research needs of various applications. The available pumps now offer features such as multi-channel pumps, computer control, analog control, low noise, and wide range flow rates. Pump styles include traditional roller peristaltic pumps, our bilinear sine peristaltic pumps, and spacecraft pumps that utilize check valves and membrane pumps. The following table is designed to answer most of our questions about continuous flow pumps. Please contact our technical support department for further assistance.
Peristaltic pump and continuous flow pump
Peristaltic pumps utilize traditional roller series (1 to 8) to push the fluid pump head through the tube. Peristaltic flow is a typical pulsation, but using more rollers in the pump head can be smoother. Our small peristaltic pump (MPII) features two speed ranges, reversible and dual channel, at a very reasonable price. Many pumps provide external control or proportional speed input through an analog signal, or through RS-232 (serial) communication.
Peristaltic pump issue:
How to calculate the pressure demand of the equipment you are using?
The following chart will help you determine your required test pressure. It is important to choose the appropriate pump and pressure for the application. Choosing them is your intimate experimental condition and value for money. Once you have filled out the chart, please call our technical support if needed.
1. Characteristics of the specimens used in the experiment (application) you want to conduct
2. Flow rate of liquid
3. The surface area of the syringe and the linear injection force of the pump
4. Diameter of the catheter
5. Tube length
6. Viscosity of the liquid to be infused
7. Temperature of the liquid to be infused
Injection pump pressure and flow rate
How to calculate the injection pressure corresponding to various syringe sizes
The injection pressure that a syringe pump can generate depends on both the thrust of the syringe pump (measured in pounds on the syringe piston clamp) and the physical characteristics of the syringe and the settings used. The following table compares various injection pumps and provides injection pressures in PSI (pounds per square inch). Each value is obtained by dividing the average thrust of the pump by the surface area (in square inches) of injectors with diameters ranging from 0.1 to 50 mm. The diameters of various syringes can be found in the list on page 12. This table can serve as a reference for the total pressure that can be generated. Due to other factors such as catheter diameter and length, the actual values may be higher or lower than the values listed in the table. When multiple syringes share the same piston clamp, the injection pressure can be calculated by dividing the thrust by the total surface area (in square inches) of all syringes on the injection pump. For example, using two 25ml Hamilton Gastight on a PHD 22/2000 standard thrust injection pump ® The injection pressure obtained during injection is 50 lbs/(0.644 in2 X 2)=38.81 PSI (2.68 bars).
A. The calculation of injection pressure is based on the pushing force of the injection pump at the average speed.
Higher injection pressure may be obtained at low speeds and lower injection pressure may be obtained at high speeds.
The speed of the infusion pump is inversely proportional to the injection force.
The vast majority of syringes have a rated injection pressure and may not be able to withstand the injection pressure generated by the syringe pump. For detailed information and technical parameters about syringes, you can consult Harvard Instruments or your syringe manufacturer.
B.To adjust the injection pressure fromPSIconvert tobarThe following formula can be used:barInjection pressure= PSI x 0.0690.
C. The actual injection pressure will be higher. Using an injection pump with higher back pressure may cause premature wear of the pump's split nut.
Small/large flow rate determined by the size of the infusion pump and syringe
The calculation of flow rate is based on the movement speed of the piston clamp of each injection pump (the speed at which the injection pump moves the syringe piston) and the diameter of the syringe.
注射器直径表
Pump selection - Pump selection - Pump selection - Pump selection - Pump selection - Pump selection
Ordinary syringe data - diameter and piston surface area
The following table provides reference information for ordinary syringes and their corresponding diameters and surface areas. The diameter data of the injector is given below in millimeters for each injector. All Harvard microprocessor infusion pumps require users to input syringe diameter information. The infusion pump uses this diameter data to set the flow rate. The PHD 22/2000 series infusion pump also incorporates this information into the pump's memory in the form of a user-friendly syringe lookup table. The surface area information is used to calculate the PSI (pounds per square inch) data required for the injection pressure gauge on page 7. The average injection pressure (rated value) of all injection pumps and the combination of injectors can be calculated as PSI by dividing the average thrust of the injection pump by the diameter of the injector (in square inches). For example, using a 25ml Hamilton Gastight on a PHD 22/2000 standard injection pressure infusion pump ® The injection pressure obtained during injection is 50 lbs/0.644 in2=77.6 PSI (5.35 bars).
Pump selection - Pump selection - Pump selection - Pump selection - Pump selection - Pump selection
How to choose the appropriate syringe correctly
Pump selection - Pump selection - Pump selection - Pump selection - Pump selection - Pump selection
This product provides 1 year of free after-sales service, including product introduction, delivery, installation, debugging, maintenance, technical training, * * *, etc. (special agreements with customers shall be executed according to the agreement).
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