Compact and smart dosing system in analytical instrumentation

The Micro Dispense Module realizes the precise dosing and metering of liquids in the microliter to milliliter range. The system is characterized in a modular design with connectible fluid in- and outlet, optional actuators and sensors for measuring flow rates.

The central element is a micro annular gear pump, a robust and highly precise device with an extremely long service life and low pulsation. The pump allows dispensing the smallest liquid amounts on the one hand and rinsing with high flow rates on the other.

The ARM Cortex M3 processor provides the necessary system intelligence for integrating sensors and pump into a closed loop control, monitoring the process-accurate dispense and enabling communication and programming. It can be addressed with the same programming commands than a syringe pump.

The , whose size corresponds to the half-height syringe pumps format, guarantees process reliable liquid handling both in new analytical devices as well as when replacing syringe pumps in existing systems and reduces the maintenance and service expenditures.


Dispense Module in syringe pump format

  • compatible integration in analytical devices
  • size of half-height syringe pumps format
  • high accuracy of dispense volume and volume flow (precision and trueness)
  • communication via syringe pump programming commands
  • process monitoring
  • low noise level
  • modular design (regarding fluid in- and outlet, sensors, filter, materials)

Micro annular gear pump

  • long service life
  • low life cycle costs
  • discrete dosing of smallest liquids amounts
  • continuous, uninterrupted volume flow
  • wide dynamic range of pump with low dosing volumes and high volume flow for rinsing
  • wide volume flow range of one single pump
  • fast response

Sensor control and monitoring

  • precise controlled volume flow
  • fault detection
  • monitoring and documentation
  • Analytical instrumentation
  • Biotechnology
  • Laboratory automation

Micro annular gear pump mzr-4622

pump of the low pressure series,
it covers the flow rate range 0.012 to 72 ml/min,
for continuous and discrete dosing

Micro annular gear pump mzr-2921

pump of the low pressure series,
it covers the flow rate range 0.003 to 18 ml/min,
for continuous and discrete dosing

Micro annular gear pump mzr-2521

pump of the low pressure series,
it covers the flow rate range 0.0015 to 9 ml/min,
for continuous and discrete dosing
Power supply 24 V DC ±10 %, max. 1.5 A
Protocol standard commands of syringe pumps
OEM Communication (OC) protocol and
Data Terminal (DT) protocol
Liquids aqueous solutions, solvents
Controlled flow rate range 5...120 µl/min
20...1200 µl/min
Flow rate range (without control) mzr-2521 - up to 9 ml/min
mzr-2921 - up to 18 ml/min
mzr-4622 - up to 72 ml/min
Micro annular gear pump mzr-2521
Precision CV < 1 % (Coefficient of variation CV)
Fluid connection 1/4"-28 UNF
Dimensions (L x W x H) 106.7 x 44.4 x 127.0 mm
4.2" x 1.75" x 5.0"
Weight approx. 800 g
Differential pressure range 0 - 1.5 bar
Operating temperature range -5 ... +60 °C @ 20 ... 95 % humidity

Even if single parameters are within the indicated performance range of technical data, certain parameter combinations may not be achievable. Single parameters may exceed their indicated performance range under adequate circumstances. For detailed evaluation please contact HNP Mikrosysteme. Actual performance may vary.
Specifications are subject to change without notice.

File Language Size
Micro Dispense Module
Micro Dispense Module (386 KB)
Mikro-Dispense-Modul (405 KB)
Dispense module (319 KB)
386 KB