- Photodiode Sensor
- 4-20mA Output
- 2-Wire
- Loop Powered
- Microprocessor
The MAS is a two-wire, microprocessor photo sensor providing a light level input into lighting control and building automation systems. The MAS has four models which are used in different locations in and around a building. Each is powered by 24VDC, but can accept from 18 to 30VDC. The output signal is 4-20mA. This robust signal can travel up to 4,000ft without the signal degrading. Both the 4mA and 20mA values are calibrated to factory standard footcandle settings using NIST traceable equipment; Indoor, Outdoor, Atrium and Skylight.
| Sensor | Style | Min Adj | Max 1/2 X | Max 1X | Max 2X |
| MAS-I | Indoor | 0 | 50 Fc. | 100 Fc. | 200 Fc. |
| MAS-O | Outdoor | 0 | 125 Fc. | 250 Fc. | 500 Fc. |
| MAS-A | Atrium | 50 | 500 Fc. | 1,000 Fc. | 2,000 Fc. |
| MAS-S | Skylight | 100 | 2,500 Fc. | 5,000 Fc. | 10,000 Fc. |
MAS-CAL Field Calibration Unit
The MAS-CAL is the field calibration unit for the MAS sensor. It is designed to operate using a 9V battery or external 24VDC power supply. The MAS-CAL provides the MAS sensor with power from either source. The MAS-CAL is used to view and adjust the settings of the MAS sensor. Features- View and adjust MAS settings
- Halve or double the factory set full-scale range
- Double or reset to zero the factory set timing
- 9V or 24VDC power supply
