Download Agtron ST Seed Sensor Datasheet Rev 04

Agtron
ST Seed Sensor
Datasheet
Rev 04
Product
Part Number
Description
ST32E
AGST32E00
32mm (1 ¼”) ST Seed Sensor
ST25E
AGST25E00
25mm (1” ) ST Seed Sensor
ST Seed Sensor
1.
Rev 04
Physical Dimensions
Note: 32mm (1 ¼”) version shown. Cable and enclosure dimensions are
identical for all hose sizes.
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ST Seed Sensor
2.
Rev 04
Connector Pin-outs
Pin #
1
2
3
4
5
Shell
Function
Ground
Sensor Communications
Power
Programming (used only with Agtron programmer)
Sensor Communications
Shield
Pin #
1
2
3
4
5
Shell
Function
Ground
Sensor Communications
Power
Not used
Sensor Communications
Shield
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ST Seed Sensor
3.
Rev 04
Performance Characteristics
Optical Detection Elements…..………………………………………..4
Optical Sampling Frequency (1) ..……………………………………. 15 kHz
Optical Detection Zone………………………………………………… 2mm
Minimum Particle Detection Size .……………………………………. 1.5mm
Minimum Optical Cross Section Coverage .………………………….40%
Optical Calibration Steps (2).………………………………………….. 24 steps
Note 1: 15kHz sampling frequency allows the detection of a 1.5mm seed particle at a velocity
of 22.5 meters per second.
Note 2: Calibration steps and range allow the sensor to adjust the optical intensity to
compensate for foreign material build up on the optical elements.
4.
Electrical Characteristics
Absolute Maximum Ratings (1)
Ambient Temperature………………………………………………….. -30°C to +85°C
Storage Temperature...................................................................... -40°C to +105°C
Supply Voltage ............................................................................... 7.0V to 18.0V
Maximum Current Consumption..................................................... 125 mA @ 7V supply
Note 1: Stresses above those listed under “Absolute Maximum Ratings” can cause
permanent damage to the sensor. Exposure to maximum rating conditions for extended
periods can affect device reliability.
Operational Ratings
Ambient Temperature………………………………………………….. -20°C to +50°C
Supply Voltage .............................................................................. 5.0V to 16.0V
Nominal Current Consumption....................................................... 65 mA @ 12V supply
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ST Seed Sensor
5.
Rev 04
Communication Interface
Physical ...................................................................................... Paired Shielded
Data Link ..................................................................................... RS485
Baud ............................................................................................ 250Kbaud
Redundancy ............................................................................... Bidirectional Interface
Communication Cycle Time (120sensors)................................... 350ms
Diagnostic Data
- Input Voltage
- Micro Temperature
- Regulated Voltage
- Runtime timer
- Detector bias levels
- Detector calibration levels
- Emitter current output
- Software version
- Hardware version
- Sensor type
Bidirectional communications allow for enhanced error detection and fault resistance. A single
break or intermittent in the communication loop does not affect performance of the sensor
loop because data can be rerouted in the reverse direction.
6.
Compliance Standards
ISO 15003
Cold and dry heat
Damp heat steady state
Damp heat cyclic
Particle impact
Mechanical shock
Random Vibration
Sinusoidal Vibration
Corrosive atmosphere
IP code
Air pressure
Corrosive atmosphere
Conducted transient ISO 7637-1
ESD ISO 10605
Level 3
Level 2
Level 2
500kPa (11-14mm)
Level 2
Level 2
Level 2
Level 2
IP67
80-100 kPa
Level 2
Level 2
Level 2
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