ISM-1230
Highlights
- 1-channel light barrier amplifier for dust and turbidity measurement
- 4 operation modes
- 2 frequencies
- Sensor control
- Test and diagnostic function
- Analog output 0-10 V
- Alarm output
- Test input
Product Description
The ISM-1230 is a special amplifier for optical turbidity measurement resp. dust measurement.
An infrared transmitter and a receiver (sensor heads) is to be connected to the amplifier. The light beam passes the supervised medium. This system operates with modulated infrared light. The transmit power is adjusted automatically for a constant input signal at the receiver.
Four measurement ranges resp. measurement modes are available:
Mode 1 | 100% of the overall range correspond to 0-10 V at the analog output. With an offset the 0V threshold can be moved. |
Mode 2 | 50% of the overall range correspond to 0-10 V. The measurement range is stretched twice. By the offset, the starting point of the measurement range is fixed to e.g. 20% of transmit power, to even out pollution of the sensor heads. Below 20% the voltage level is 0V, between 20% and 70% the voltage is 0-10 V (corresponding to 50% of the overall measurement range). Above 70% the voltage is always 10 V. |
Mode 3 | 25% of the overall range correspond to 0-10 V. The measurement range is stretched fourfold. |
Mode 4 | 12,5% of the overall range correspond to 0-10 V. The measurement range is stretched eightfold. In this mode a little change of turbidity achieves the highest change of the output voltage. |
The offset is setted by pressing the switch at the front of the device. Alternativly, a setting by the test input is possible.
The recent value of turbidity is available at the analog output (0-10V). Additionally, the switching output acts if the voltage level exceeds the adjusted level of the potentiometer (0-10).
Like this, a simple fan control can be implemented. The switching output is deactivated if the voltage falls below the adjusted threshold with a hysteresis of approx. 0,2 V.
Technical Specifications
Number of channels | 1 |
Range (with transmitter ITL and receiver IRL / IRH) | 7 m / 15 m |
Range (with transmitter ITH and receiver IRL / IRH) | 10 m / 25 m |
Range (with transmitter ITA and receiver IRL / IRH) | 20 m / 55 m |
Operation modes | 4 |
Transmit frequencies | 3,7 / 4,3 kHz |
Switching output | 60 V AC / DC short-circuit proof |
Reaction time | - |
Alarm output | PNP 24 V, 100 mA |
Error output | - |
Analog output | 0...10 V |
Test input | 24 V DC |
Housing material | Noryl |
Protection class | IP 20 |
Dimensions B x H x T | 35,8 x 95 x 58 mm |
Supply voltage | 24 V DC |
Current consumption | 2,4 W |
Ordering Information
Version | Order code |
Plug Connection | ISM-1230/24VDC |
Downloads
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| Datasheet ISM-1200 English |
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