GM200-1A and GM400-1A Mini Peristaltic Pumps

DESCRIPTION

The GM200-1A and GM400-1A are compact laboratory peristaltic pumps supplied in manufacturer-described configurations with a BPH01 four-roller pump head. They provide adjustable speed, continuous or time-based operation and external/RS485 communication options, making them useful where a small integrated drive is preferred over a larger general-purpose pump. Their respective maximum single-channel reference flows are 170 and 340 mL/min with the specified compatible tubing and head configuration.

Product Overview

This family combines a compact housing, a locally accessible LCD and a four-roller BPH01 pump head. It can be considered for laboratory liquid circulation, small analytical rigs and custom instruments where space and interface options both matter. The -1A versions were selected for this listing because they support remote control; separate -2A versions exist with a different control specification and should not be represented as equivalent.

The BPH01 head is designed to provide relatively smooth tubing compression, but its presence does not create a universal low-pulsation specification for any tubing or operating pressure. Users should confirm whether the intended experimental device tolerates the resulting flow behaviour.

How It Works

The BPH01 rollers successively squeeze flexible tubing and advance liquid along its length. Changing the drive's rpm alters the pumping rate within the limits of the tube-and-head combination. The pump controls speed and timing rather than directly measuring actual delivered flow. Tubing size, compliance, pressure and wear affect output and should be assessed where flow repeatability is critical.

Package / Configuration

The manufacturer's GM200-1A and GM400-1A configuration tables specify the BPH01 pump head. Select tubing compatible with the liquid and the supported head tubing sizes; listed options include 13#, 14#, 19#, 16# and 25#. Confirm the adaptor, footswitch, interface cable and any mounting accessories required for your installation, rather than assuming they are all included.

Key Features

• Compact pump enclosure and integrated four-roller BPH01 head.
• GM200-1A motor operation up to 200 rpm; GM400-1A up to 400 rpm.
• Continuous and timer operating modes.
• LCD presentation of rpm, direction, time and operating status.
• Local keypad and optional footswitch operation.
• External start/stop, direction and speed-control interfaces on -1A versions.
• RS485 communication supporting Modbus RTU and the manufacturer's protocol.
• Fast prime and retained operating settings as configured.

Technical Specifications

Parameter	GM200-1A	GM400-1A
Speed range	0–200 rpm	0–400 rpm
Maximum reference single-channel flow	170 mL/min	340 mL/min
Pump head	BPH01	BPH01
Pump-head rollers	4	4
Head compatibility in listed arrangement	Tubing 13#, 14#, 19#, 16#, 25#	Same
Work modes	Continuous and timed	Continuous and timed
Speed resolution	0.01 rpm below 10 rpm; 0.1 rpm from 10 to below 100 rpm; 1 rpm at higher speeds	Same
Remote control	External signals and RS485 / Modbus RTU	Same
Flow calibration	Not specified	Not specified
Dimensions including head	220 × 115 × 135 mm	220 × 115 × 135 mm
AC input	100–240 V, 50/60 Hz	100–240 V, 50/60 Hz
IP rating	IP31	IP31
Approximate weight with head	1.35 kg	1.35 kg

Applications

The compact footprint makes these drives relevant to laboratory reagent transfer, process sampling, instrument integration and selected electrochemical liquid-flow experiments. They may support an MEA setup where flow rates fall within the achievable range of a BPH01/tubing combination. For a dual-loop MEA arrangement, the two liquids should have independently controllable drives if their flow rates must be tuned separately.

Compatibility and Selection Guidance

Choose GM200-1A or GM400-1A based on the required operating-speed and flow envelope. Check whether the pump must be controlled locally, by footswitch or by a host system over RS485. Where precise volumetric metering is the main requirement, the absence of a specified integrated calibration function should be considered; independently measure delivery as needed. Chemical compatibility depends on the fitted tubing rather than solely on the pump-head materials.

Why Source Through ScienceGears

ScienceGears can assist Australian and New Zealand customers with GM-1A model selection, tubing requirements and remote-control configuration when specifying compact laboratory or instrument-integrated liquid handling.

Frequently Asked Questions

What distinguishes GM200-1A from GM400-1A?

GM400-1A offers the higher motor-speed ceiling and reference maximum flow with the specified head/tubing arrangement.

Is the pump head included?

The manufacturer's listed configuration specifies a BPH01 head; the exact offered package should still be checked on the quotation.

Are these the same as GM200-2A and GM400-2A?

No. The -1A models list external signal and communication control, while -2A models have different control functionality.

Does the four-roller head guarantee pulse-free delivery?

No. Flow pulsation can be reduced by an appropriate head design but remains dependent on tubing, speed and the connected hydraulic circuit.

Can a computer or PLC control the pump?

External controls and RS485/Modbus RTU are listed for the -1A versions. Confirm wiring and protocol requirements before integration.

Can it deliver a verified fixed volume automatically?

The listed modes are continuous and timed operation; a calibrated fixed-volume dispensing function should not be assumed without separate validation or controls.

Contact ScienceGears

Send ScienceGears the required flow, liquid type, installation space and control method to discuss an appropriate GM200-1A or GM400-1A pumping configuration.