Features
- For non-ferrous media
- Requires little maintenance due to no moving parts
- Operates from 24 Vdc
- Relay contact output
- Push-button setup
- LED indicators
- CE compliant
The MFD-4 is a media flow detector for suction-type abrasive blasting machines. The MFD-4 uses a charge-coupled amplifier that is connected to a sensing pin. The pin is inserted into the flow path of the abrasive blasting media. Each particle passing the pin shares a minute charge with the pin. This charge is converted to a voltage that is used to activate an output relay contact.
Setup is simple. The zero and span functions are automatic—pushing the “zero” button acquires zero for the no-flow condition and pushing the “flow” button sets the sensor gain and activates the relay. The relay contact will transfer whenever the flow is 50-100% of the programmed setting.
The MFD-4 is enclosed in a rugged aluminum housing. It can be attached to the media blast hose at any location and in any orientation via a sensing pin that protrudes from the bottom of the mounting base. (A sensing pin is included with the MFD-4. Replacement pins are available from Electronics Inc. See below.)
Cable and Pin Ordering Information
| Mating Plug and Cable | Replacement Sensor Pins | ||
| LENGTH | CPN | LENGTH | CPN |
| 6′ / 1.8 m | 940010 | 1.12″ | 940090 |
| 12′ / 3.5 m | 940011 | ||
| 15′ / 4.5 m | 940012 | ||
