Pump Azura Compact (P 2.1S)

Introduction

The Knauer Azura Compact pumps can be controlled via flowchem.

As for all flowchem devices, the virtual instrument can be instantiated via a configuration file that generates an openAPI endpoint.

Connection

Knauer pumps are originally designed to be used with HPLC instruments, so they support ethernet communication. Moreover, they feature an autodiscover mechanism that makes it possible to automatically find the device IP address of a device given its (immutable) MAC address. This enables the use of the valves with dynamic addresses (i.e. with a DHCP server) which simplify the setup procedure.

Configuration

Configuration sample showing all possible parameters:

[device.my-knauer-pump]  # This is the pump identifier
type = "AzuraCompactPump"
ip_address = "192.168.2.1"  # Onyl one of either ip_address or mac_address need to be provided
mac_address = "00:11:22:33:44:55"  #  Onyl one of either ip_address or mac_address need to be provided
max_pressure = "10 bar"  # Optionally, a string with natural language specifying max pressure can be provided
min_pressure = "5 bar"  # Optionally, a string with natural language specifying max pressure can be provided

API methods

Once configured, a flowchem AzuraCompactPump object will expose the following commands (where pump-b90e33 is the name of the device):

GET /pump-b90e33/pump/

Get Metadata

Return metadata.

Status Codes

  • 200 OK – Successful Response

PUT /pump-b90e33/pump/infuse

Infuse

Start infusion.

Query Parameters

  • rate (string) –

  • volume (string) –

Status Codes
PUT /pump-b90e33/pump/stop

Stop

Stop pumping.

Status Codes

  • 200 OK – Successful Response

GET /pump-b90e33/pump/is-pumping

Is Pumping

Is pump running?

Status Codes

  • 200 OK – Successful Response

GET /pump-b90e33/pressure/

Get Metadata

Return metadata.

Status Codes

  • 200 OK – Successful Response

GET /pump-b90e33/pressure/read-pressure

Read Pressure

Read from sensor, result to be expressed in units (optional).

Query Parameters

  • units (string) –

Status Codes

Device detection

Azura Compact pumps can be auto-detected via the flowchem-autodiscover command-line utility. After having installed flowchem, run flowchem-autodiscover to create a configuration stub with all the devices that can be auto-detected on your PC.

Further information

For further information please refer to the manufacturer manual