Grundfos DMX Series

25V3.0
DMX model 227
7 Electronics Diaphragm Breakage Sensor
7.1 Technical Data of the Electronics
Description
Model 230 V (+10% /-10%)
Model 115 V (+10% /-10%)
Contact load 250 V / 6 A, max. 550VA
Power consumption 1.15 VA
Degree of protection IP 65
Permissible temperature range 0 - 40 °C
7.2 Dimensional Drawing (Electronics Enclosure)
130
113.5
63.5
80
7.2 Function
7.2.1 Pumps prepared for a diaphragm breakage indication
❏ Special dosing head flange for inserting the optoelectronic sensor
❏ Optoelectronic sensor, contains
- infrared sender
- infrared receiver
In case of a leaking diaphragm:
❏ Dosing liquid penetrates the dosing head flange.
- The light refraction will be changed.
❏ The sensor produces a signal.
- The electronics switches two contacts which can be used e. g. for
triggering an alarm device or switching off the pump.