Guardian II
Guardian I Settled Dust Sensor
The Guardian II uses a patent pending optocal technique to detect the amount of settled dust accumulated on it’s surface. Each Guardian is calibrated to your speciifc dust type to provide results that closely represent an output that people will understand. The cloud based application can provide notifications based on user defined alarms or limits. The dash board also provides accumulations trends and rates, which can help in planning your preventative maintenance schedule.
| Parameter | Description / Value |
|---|---|
| Measurement Principle | Dynamic Induction |
| Measurement Range | Detection Limit < 0.1 mg/m3 Max Several g/m3, depending on conditions |
| Enclosure | Stainless Steel (IP65 / Nema 4X) |
| Communication Interfaces |
1 x serial communications RS485 |
| Communication Protocol | Modbus RTU |
| Analog Output | Only with a Controller |
| Dust Channels | Instantaneous (1-sec Avg) and 1 RA dust channel |
| Alarming | Alarm limits and delays for all dust channels |
| Self-Checks | Automated |
| Self-Check Functions | Electronic Drift Check (EDC) Rod Isolation Check (RIC) (US Patent 9482706B2) |
| Parameter | Description / Value |
|---|---|
| Measurement Range | Detection Limit < 0.1 mg/m3 Max Several g/m3, depending on conditions |
| Enclosure | Stainless Steel (IP65 / Nema 4X) |
| Weight | 7.0 lbs (3.2 kg) (without the rod) |
| Dimensions (without rod) |
7″ x 11″ x 5″ 178mm x 280mm x 127mm (W x H x D) |
| Ambient Temperature | -40 C to +70 C (-40 F to 158 F) |
| Power Supply | 24 VDC |
| Power Consumption | Less than 5 Watts |
| Communication Interfaces |
1 x serial communications RS485 |
| Communication Protocols | Modbus RTU |
| Process Temperature | Default 200 C (392 F) Optionally up to 1600 F (871 C) |
| Process Pressure | Default 3000 psi (20684 kPa) |
| Process Humidity | Max 95% RH (non-condensing) |
| Self-Checks | Automated |
| Self-Check Functions | Electronic Drift Check (EDC) Rod Isolation Check (RIC) (US Patent 9482706B2) |
