Longer dLSP 501X Series Modular Syringe Pumps

Overview

The Longer dLSP 501X Series Digital Split-Type Syringe Pumps are modular laboratory pumping systems designed for precise liquid infusion, withdrawal and programmable fluid delivery. The series comprises dLSP 501S, dLSP 501L and dLSP 501W, accommodating syringe capacities from 0.5 µL to 60 mL across the three models.

Each syringe-drive unit operates separately from its control interface, allowing flexible positioning within laboratory instruments, microfluidic platforms and experimental systems. A compatible dLSP uC touchscreen controller, dedicated computer software or RS485 communication can be used to manage individual drives according to the selected configuration.

Operating Principle

The dLSP 501X Series controls liquid delivery through motor-driven displacement of a syringe plunger. The pump advances or retracts the plunger at a defined linear rate, allowing controlled infusion or withdrawal.

The syringe's internal diameter, plunger displacement and operating speed determine the nominal volumetric flow rate.

Unlike peristaltic pumps, which move liquid through compressible tubing, syringe pumps produce fluid displacement through a syringe barrel.

The split-type arrangement separates the compact syringe-drive mechanism from the controller. This is useful where the drive must be positioned close to an experiment while the operating interface remains accessible elsewhere.

Operating Modes

Depending on the controller or software configuration, the series supports:

• Infusion-only operation
• Withdrawal-only operation
• Infusion followed by withdrawal
• Withdrawal followed by infusion
• Repeated operating sequences
• Programmable workflows using compatible PC software

Programming functions can include defined flow-rate stages, delays and repeated cycles.

Key Features

• Three modular drive models: dLSP 501S, 501L and 501W for different syringe capacities and delivery requirements.
• Separate drive and controller: Compact pump mechanisms can be positioned independently of the operating interface.
• 7-inch touchscreen controller: The dLSP uC provides local operation and configuration of up to four compatible drive units.
• Multi-drive computer control: Dedicated PC software supports independent control of up to 10 drive units.
• RS485 integration: Modbus RTU communication supports independently addressed drives in larger compatible control systems.
• Precision plunger movement: Manufacturer-specified travel resolution and linear-motion accuracy.
• Flow-rate calibration: Supports calibration of user-defined syringe configurations.
• Programmable operation: Infusion, withdrawal, flow changes, delays and repeated sequences using applicable software.
• Stored methods: Up to 100 parameter methods can be stored on the compatible controller and transferred using USB.
• Operational management: Screen locking, user-access levels, operating logs and electronic-signature functions are available in supported configurations.
  
  

Technical Specifications

Parameter	Specification
Product family	dLSP 501X Series
Drive models	dLSP 501S, dLSP 501L, dLSP 501W
Pump type	Digital split-type syringe pump
Syringes per drive	1
Controller	dLSP uC
Controller display	7-inch colour LCD touchscreen
Local multi-drive operation	Up to 4 compatible drives
Dedicated PC control	Up to 10 independently controlled drives
RS485 / PLC control	Up to 40 independently addressable drives in a compatible system
Communication protocol	RS485, Modbus RTU
Operating functions	Infusion, withdrawal and supported combined/repeated sequences
PC-based programming	Supported
Flow-rate calibration	Supported for user-defined syringe configurations
Linear travel accuracy	≤ ±0.35% when travel is at least 30% of the maximum stroke
Linear travel coefficient of variation	0.03% at rated travel
Adjustable drive thrust	20–100% of model-specific maximum
Stored parameter methods	Up to 100 on the compatible controller
Operating temperature	5–40 °C
Relative humidity	Below 85%

The stated linear travel accuracy describes mechanical plunger motion under specified test conditions, not guaranteed delivered-liquid accuracy for every syringe, fluid or experimental configuration.

Model-Specific Mechanical Specifications

Specification	dLSP 501S	dLSP 501L	dLSP 501W
Maximum stroke	70 mm	70 mm	95 mm
Plunger movement per microstep	0.095 µm	0.099 µm	0.098 µm
Minimum specified linear speed	0.6096 µm/min	0.635 µm/min	0.625 µm/min
Maximum specified linear speed	182.88 mm/min	190.5 mm/min	143.75 mm/min
Maximum linear thrust	15 N	30 N	100 N
Drive dimensions (L × W × H)	170 × 35 × 58 mm	180 × 45 × 74 mm	235 × 103 × 91 mm
Drive power requirement	DC 24 V / 2 W	DC 24 V / 3.6 W	DC 24 V / 7.5 W
Approximate drive weight	0.31 kg	0.51 kg	1.65 kg

dLSP uC Controller

The dLSP uC is the manufacturer's separate touchscreen controller for compatible dLSP 501X drive units.

Parameter	Specification
Display	7-inch colour touchscreen
Maximum connected drives for touchscreen control	4
Dimensions (L × W × H)	187 × 123 × 39 mm
Approximate weight	0.6 kg
Power requirement	AC 90–260 V / 30 W
Method storage	Up to 100 parameter methods
Method import/export	USB flash drive
Access management	Three user-access levels

The controller, syringe drives, syringes, communication cables, mounting accessories and software requirements must be confirmed as part of the ordered configuration.

Selecting the Appropriate dLSP 501X Model

dLSP 501S — Small-Volume Syringe Applications

The dLSP 501S accommodates compatible syringes from 0.5 µL to 250 µL.

It provides a reference flow range of 0.0048 nL/min to 759.4 µL/min across specified syringe configurations, with a maximum linear thrust of 15 N.

This compact drive may be considered for microfluidics, low-volume reagent delivery and experiments where small syringe capacities are appropriate.

dLSP 501L — Intermediate Laboratory Syringe Volumes

The dLSP 501L accommodates compatible syringes from 0.5 µL to 1,000 µL.

Its reference flow range extends from 0.0050 nL/min to 3,178 µL/min across specified syringe configurations. It provides a maximum linear thrust of 30 N.

This model extends the supported syringe-volume range while retaining a compact modular design.

dLSP 501W — Larger Syringe Capacities

The dLSP 501W accommodates compatible syringes from 5 µL to 60 mL.

Its reference flow range extends from 0.0601 nL/min to 95.82 mL/min across specified syringe configurations.

With a maximum linear thrust of 100 N and a longer maximum stroke, the 501W is intended for applications requiring larger compatible syringe capacities or greater drive force.

The higher maximum thrust should not be interpreted as a universal pressure rating. Allowable system pressure depends on the syringe, barrel geometry, seals, fluid path and mechanical operating conditions.

Modular Control and Integration

The dLSP 501X Series provides different control architectures depending on the number of syringe drives and the intended experimental workflow.

Touchscreen control: The separate dLSP uC controller supports up to four compatible syringe drives with individually configured parameters.

Dedicated PC control: Manufacturer software supports independent operation of up to 10 drive units.

RS485 / Modbus RTU: Compatible host controllers can address up to 40 drive units independently, subject to the communication system design.

Software-programmed methods may include infusion, withdrawal, delays, flow-rate changes and repeated operating stages.

For automated installations, communication wiring, power requirements, controller compatibility and any necessary accessories should be reviewed before ordering.

Typical Applications

The dLSP 501X Series can be considered for:

• Microfluidic experiments and microfluidic-chip research
• Precision introduction of small reagent volumes
• Analytical instrumentation and method development
• Electrospinning and controlled fluid-delivery experiments
• Capillary electrophoresis and compatible sample-handling workflows
• Laboratory flow chemistry and controlled synthesis
• Experimental electrochemical flow systems
• Multi-drive laboratory automation and research instrumentation

For electrochemical electrolytes, solvents or reactive reagents, verify the chemical compatibility of the syringe barrel, plunger seals, tubing, fittings and other wetted components.

Configuration and Selection Guidance

Selecting a modular syringe pump requires confirmation of both the mechanical drive and the control architecture.

Important considerations include:

• Required minimum and maximum liquid flow rates
• Syringe capacity and internal diameter
• Infusion-only or infusion/withdrawal operation
• Required delivery volume and operating duration
• Fluid compatibility and allowable system pressure
• Available mounting space and drive positioning
• Number of independently controlled syringe drives
• Touchscreen, PC or PLC control requirements
• Communication, cabling and power arrangements

The manufacturer's reference flow-rate ranges are calculated across specified compatible syringe sizes. A single syringe cannot provide the complete published flow range of a pump model.

For experiments requiring long-duration or continuous fluid output, syringe capacity and refill or valve-switching arrangements must also be considered. An infusion/withdrawal mode does not automatically guarantee uninterrupted fluid delivery.

Why Source Through ScienceGears?

ScienceGears assists researchers and engineers with selecting modular syringe-drive configurations, compatible syringe sizes and appropriate control arrangements.

Our team can discuss fluid-delivery requirements, experimental integration, multi-drive operation and quotation specifications.

International product enquiries are welcome. Supply destinations, equipment availability and delivery arrangements are confirmed according to the applicable manufacturer distribution terms.

Frequently Asked Questions

What is the difference between dLSP 501S, 501L and 501W?

The primary differences are compatible syringe capacity, reference flow range, mechanical dimensions and maximum thrust. The 501S is intended for smaller syringes, the 501L extends the range to 1,000 µL, and the 501W accommodates compatible syringes up to 60 mL.

What does split-type mean?

Split-type means the syringe-drive mechanism is physically separate from the operating controller. This allows the drive to be positioned near the experiment while its parameters are managed through a compatible controller or communication interface.

Can multiple syringe drives operate independently?

Yes. The manufacturer specifies independent drive control through supported touchscreen, computer and RS485 configurations. The maximum number of drives depends on the control architecture.

Can the pump perform both infusion and withdrawal?

Yes. Infusion, withdrawal, combined sequences and software-programmed operating methods are supported. Actual functions should be confirmed for the selected controller and software configuration.

Is a touchscreen controller included with every pump drive?

The dLSP uC is the compatible controller for local touchscreen operation, but the exact supplied package depends on the order. The controller, drive units, syringes, cables and accessories should be confirmed in the quotation.

Does the stated ±0.35% accuracy apply to liquid delivery?

The manufacturer specifies a linear travel accuracy of ≤ ±0.35% under defined stroke conditions. Actual liquid-delivery performance also depends on syringe dimensions, mechanical loading, fluid properties and calibration.

Can the dLSP 501X Series be used for electrochemical research?

It may be suitable for compatible electrochemical fluid-delivery experiments. Syringe materials, seals, fittings, operating pressure and flow requirements must be verified for the specific electrolyte and experimental setup.

Contact ScienceGears

Contact ScienceGears to discuss dLSP 501X model selection, syringe compatibility, modular control arrangements, precision fluid delivery and quotation requirements.