AR
Metering pumps
Electromechanical regulator
The majority of Sodi Scientifica’s metering pumps allows for flow control both manual and servo-assisted. “AR” regulator, in particular, consists of an electromechanical positioner which allows to adjust the flow rate by means of an electric command with 4-20 mA signal. This regulation system can be coupled to all the PD series pumps with the exclusion of PD S and PD M models only.
Functionality
Flow adjustment is carried out by means of a servo-assisted adjustment of plunger/diaphragm’s stroke length, according to the pump type.
Available version
The regulator is available in two versions according to the pump on which it is installed:
Mod. AR 2000suitable for pumps: |
Mod. AR 80 2001suitable for pumps: |
| PD 64 | PD 80 |
| PD 71 | |
| PDH71 | |
| PDH90 |
Performance and
construction features
| Input signal | 4÷20 mA / 60 Ω |
| Output feedback signal | 4÷20 mA / 180 Ω max |
| Electric connection | Harting type series STAF 6 |
| Manual/Automatic switch | Yes |
| Power Supply | Single-phase 400V 50/60Hz 40 VA |
| Max stroke length adjustment | 40 mm |
| Working temperature | -5°C ÷ +50°C |
| Protection level | IP 55 |
Weights and dimensions
As an example, for a rough estimation of the overall dimensions, here below are the schemes of the instruments and related sizes in mm.
Mod. AR 2000
Mod. AR 80 2001
