The ES-642 Remote Dust Monitor is an industrial air quality sensor designed to provide real time particle concentration measurements in both indoor and outdoor environments.
The ES-642 has flexible serial ports and analog outputs to support various data collection systems. The serial ports support MODBUS and simple ASCII commands via RS-232 or RS-485. Analog outputs include both 0-10 volts and 4-20 mA.
Features
Applications
The unit is supplied in a rugged weatherproof enclosure. It includes an LCD display to provide information about particulate concentration, flow rate, instrument status and power. The electronics and optical system are protected from moisture by a built in intake heater that is humidity level controlled. The heater power is regulated to maintain a minimum humidity level. Additional features include a purge air system and an automatic zero calibration routine.
The sensor can be wall mounted or installed on a vertical mast up to 3 inch in diameter. The ES-642 is supplied with a 10 ft cable and connector for power (15 to 40 VDC) and signal output.
The ES-642 measures particulate concentration using a highly sensitive forward scatter laser nephelometer, having a measurement range of 0 to 100 mg/cubic meter or 0 to 100,000 ug/cubic meter. Optional sharp-cut cyclones are used to set the measurement level of the ES-642. As supplied it provides particulate monitoring for TSP, with the addition of the sharp-cut cyclone it can be set for particulate smaller than PM10 or smaller than PM2.5, or PM1. The accuracy of the instrument is ±5% based on a traceable PSL 0.6 micron reference standard.
Measurement Principle: | Particulate concentration by forward light scatter laser Nephelometer |
Available Cut Points: | TSP Inlet Standard. PM10, PM2.5, and PM1 sharp-cut cyclone inlets available. |
Measurement Range: | 0 to 100 mg/m3 (0 to 100,000 mg/m3) |
Measurement Sensitivity: | .001 mg/m3. |
Nephelometer Accuracy: | ± 5% traceable standard with 0.6um PSL. |
Particle Size Sensitivity: | 0.1 to 100 micron. |
Display: | 2 X 16 backlit LCD. Provides concentration, flow and status information. |
Zero Calibration: | Automatic Zero Calibration every hour or as programmed from 1 to 999 minutes. |
Flow Rate: | 2.0 liters/minute ± 0.1 lpm. |
Input Voltage: | 11 – 40 VDC |
Power Consumption: | 12 VDC = 300 mA (heater off), 1.2 A (heater on) 24 VDC = 140 mA (heater off), 0.6 A (heater on) |
Analog Output: | 4-20 mA and 0 – 10 VDC. |
Serial Ports: | RS-232 and RS-485 |
Serial Protocols: | ASCII Text data format and MODBUS RTU. |
Alarm Output: | Normally open and normally closed relay 30 VDC @ 1A maximum. |
Operating Temperature: | -10 to +50°C. (Ambient Temperature Sensor Range -30 to +50°C). |
Barometric Pressure: | 600 to 1040 mbar pressure sensor range. |
Ambient Humidity Range: | 0 to 90% RH, non-condensing. |
Intake Moisture Control: | Automatic 10 Watt inlet heater module controlled to sample RH set point. |
Factory Service Interval: | 24 Months typical, under continuous use in normal ambient air. |
Mounting Options: | Mounting bracket standard (wall or 2” vertical mast). Optional EX-905 tripod. |
Unit Weight: | 2.7 kg (6.0 lbs.) |
Unit Dimensions: | 22.9cm high, 17.8cm wide, 10.8cm deep. (9.0” x 7.0” x 4.25”). w/out inlet assy. 48.3cm high, 17.8cm wide, 10.8cm deep. (19.0” x 7.0” x 4.25”). w/ inlet assy. |