Longer GD200-1C General Dispensing Peristaltic Pump

Overview

The Longer GD200-1C General Dispensing Peristaltic Pump is a programmable laboratory pumping system designed for controlled fluid transfer, repeatable liquid dosing and applications requiring flexible pump-head configurations. Operating at 0.01–200 rpm, it combines continuous pumping, timed dispensing and volume-based delivery with a 5-inch touchscreen and calibration functions. Its higher-capacity drive supports multiple compatible pump-head arrangements, with maximum single-channel reference flow rates up to 2,000 mL/min for specified configurations.

Operating Principle

The GD200-1C transfers liquid through flexible tubing using a rotating peristaltic pump head. Rollers progressively compress the tubing, moving fluid along the enclosed flow path.

Since the liquid contacts the tubing rather than the pump-drive mechanism, tubing selection is particularly important for chemical compatibility, flow performance and maintenance.

The GD200-1C provides three operating modes:

• Continuous mode: For ongoing liquid transfer or circulation using speed- or flow-rate-oriented settings.
• Time mode: For repeated pumping over defined operating periods.
• Volume mode: For dispensing configured liquid volumes and repeating delivery sequences.

Flow-rate and dispensing-volume calibration functions help users adjust delivery settings to actual operating conditions.

Automatic flow-meter-assisted calibration and feedback-based control are also supported when an appropriate external flow meter is integrated. The flow meter is optional.

Key Features

• Adjustable motor speed: 0.01–200 rpm with fine speed resolution.
• Higher-capacity drive: Supports suitable multi-head configurations and higher-flow pump heads, including the KZ25-13.
• Programmable dispensing: Continuous, timed and volume-based operating modes.
• 5-inch colour touchscreen: Displays operating parameters, including speed, flow rate, time and volume.
• Calibration functions: Flow-rate calibration, volume calibration and optional automatic calibration using a compatible flow meter.
• Stored dispensing recipes: Up to 100 dispensing parameter configurations can be saved and recalled.
• Repeat dispensing: Configurable delivery counts, operating times and intervals.
• External control: Supports compatible analogue, digital and relay control signals.
• RS485 communication: Modbus RTU and Longer OEM communication protocols.
• Operational management: Voice-control capability, scheduled starting, user-access controls, control locking and exportable operating logs.
  
  

Technical Specifications

Parameter	Specification
Model	GD200-1C
Pump type	General dispensing peristaltic pump
Speed range	0.01–200 rpm
Speed resolution	0.01 rpm below 100 rpm; 0.1 rpm at or above 100 rpm
Motor-speed accuracy	±0.1%
Maximum single-channel reference flow	2,000 mL/min with suitable KZ25-13 configuration
Operating modes	Continuous, time-based and volume-based
Dispensing volume setting	0.001–9999, with selectable µL, mL or L units
Dispensing count	0–999999; zero represents unlimited cycles
Running and interval time	0.1 seconds to 9999 hours
Flow-rate calibration	Supported
Volume calibration	Supported
Automatic calibration	Optional, with compatible flow meter
Display	5-inch colour LCD touchscreen
Local operation	Touchscreen and physical keypad
Rotation	Clockwise and counter-clockwise
External speed signals	4–20 mA, 0–5 V, 0–10 V or 0–10 kHz
Start/stop and direction inputs	Compatible 5–24 V logic or relay signals
Communication	RS485; Modbus RTU / Longer OEM protocol
Stored dispensing recipes	Up to 100
Operating log capacity	Up to 4,000 entries
Power supply	AC 100–240 V, 50/60 Hz
Power consumption	60 W
Dimensions (L × W × H)	305 × 190 × 201 mm
Drive weight	Approximately 5.5 kg
Noise at 1 m	≤55 dB(A)
Enclosure protection	IP32
Operating temperature	0–40 °C
Relative humidity	Below 80%

The stated ±0.1% motor-speed accuracy should not be interpreted as guaranteed dispensing-volume or liquid-flow accuracy. Likewise, the minimum programmable dispensing setpoint does not guarantee that every pump-head and tubing configuration can deliver that volume accurately.

Compatible Pump Heads and Flow-Rate References

The GD200-1C supports several manufacturer-specified pump-head configurations, including arrangements using multiple compatible heads on the drive.

Pump-head configuration	Maximum single-channel reference flow
YZ1515X, 3 rollers	730 mL/min
YZ1515X, 6 rollers	320 mL/min
YZ2515X	530 mL/min
YZ15-13X / YZII15	730 mL/min
YZ25-13X / YZII25	1,000 mL/min
DMD15-13	690 mL/min
FG15-13	800 mL/min
FG25-13	730 mL/min
KZ25-13	2,000 mL/min
DG15-24	600 mL/min

The manufacturer lists configurations with up to four compatible YZ1515X, YZ2515X or YZII15 heads, depending on the selected arrangement. Other head types have different mounting and quantity limits.

Multi-channel DG pump heads are also supported, subject to their specific tubing and flow requirements.

Multiple pump heads or channels should not be assumed to provide independently adjustable drive speeds. Confirm the required channel arrangement and control requirements before ordering.

All listed flow rates are manufacturer reference values for specified head/tubing combinations. Actual performance depends on fluid properties, tubing dimensions, pressure conditions and calibration.

GD200-1C Compared with GD200-1B

Although both models operate up to 200 rpm and share the GD dispensing-control platform, they have different drive capabilities.

Feature	GD200-1B	GD200-1C
Maximum speed	200 rpm	200 rpm
Maximum single-channel reference flow	1,000 mL/min	2,000 mL/min
Rated power consumption	30 W	60 W
Drive weight	3.5 kg	5.5 kg
KZ25-13 configuration	Not listed in its current compatibility table	Supported
Multi-head arrangements	Model-specific	Wider range of listed configurations

For standard liquid transfer and dispensing requirements, the GD200-1B may provide sufficient capacity. The GD200-1C should be considered when the application requires the higher-capacity drive or compatible multi-head arrangements.

Typical Applications

The GD200-1C may be considered for:

• Repeated reagent dispensing and laboratory liquid dosing
• Multi-line fluid transfer with compatible pump-head arrangements
• Analytical instrumentation and sample-preparation systems
• Controlled feeding into experimental reactors
• Laboratory flow-chemistry research
• Compatible electrochemical flow-cell experiments
• Automated research equipment and laboratory method development
• Experimental processes requiring programmed liquid-transfer sequences

For corrosive electrolytes, organic solvents or other specialised fluids, chemical compatibility must be checked for all wetted tubing, fittings and connectors.

Integration and Configuration

The GD200-1C supports operation through its touchscreen and physical controls, as well as compatible external interfaces.

The RS485 communication interface allows connection to suitably configured controllers using Modbus RTU or Longer OEM protocols. External operating signals may be used for pump speed, direction and start/stop functions.

The drive also supports programmable dispensing recipes, operational logs and scheduled starting.

When configuring a complete pumping system, confirm:

• Required flow-rate range and dispensing volume
• Liquid composition, viscosity and chemical compatibility
• Number of pump heads and channels
• Preferred pump-head model and tubing dimensions
• Expected pressure and continuous operating requirements
• Acceptable pulsation and dispensing repeatability
• Required remote-control and communication functions
• Whether an external flow meter or other accessories are needed

The supplied pump-head, tubing and accessory package should be confirmed in the quotation rather than assumed.

Why Source Through ScienceGears?

ScienceGears assists laboratory researchers and engineering customers with selecting suitable dispensing pump configurations, compatible pump heads, tubing and control interfaces.

Our team can review application-specific flow requirements, multi-head arrangements, fluid compatibility and integration needs before preparing a quotation.

Product availability, supply territories and delivery destinations are confirmed according to the relevant manufacturer arrangements.

Frequently Asked Questions

What is the maximum flow rate of the GD200-1C?

Longer specifies a maximum single-channel reference flow rate of 2,000 mL/min with a suitable KZ25-13 pump-head and tubing configuration. Other pump heads have different maximum flow rates.

What distinguishes the GD200-1C from the GD200-1B?

Both models have a maximum drive speed of 200 rpm. However, the GD200-1C has a higher power rating, supports additional pump-head configurations and provides a higher maximum reference flow rate with suitable heads.

Can the GD200-1C operate multiple pump heads?

Yes. The manufacturer lists multi-head configurations for several compatible pump-head families. The number of supported heads varies by model. Multiple channels should not be assumed to provide independent speed control.

Can it dispense a specified volume repeatedly?

Yes. Volume-based dispensing and programmed repeat sequences are supported. Actual delivered-volume accuracy depends on the selected head, tubing, liquid properties and calibration.

Does the pump include a flow meter?

No external flow meter should be assumed to be included. A compatible flow meter may be added for automatic calibration and feedback-based flow control.

Can the GD200-1C be integrated into automated laboratory equipment?

Yes. The model supports external operating signals and RS485 communication using Modbus RTU or Longer OEM protocols. Controller compatibility must be verified before integration.

Can it be used for electrochemical experiments?

The pump may be suitable for laboratory flow-cell and electrolyte-circulation applications where the tubing, flow-rate range, system pressure and operating conditions are compatible.

Contact ScienceGears

Contact ScienceGears to discuss the Longer GD200-1C, including pump-head selection, multi-channel configurations, dispensing requirements, tubing compatibility, automation and quotation enquiries.