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2. What is it? State-of-the-art: microprocessor-based, wall-mount gas monitor Easy installation and operation: just apply power and these units are ready for operation Versatile: Perfect for a variety of industrial applications

3. Standard Features Large, 1.75”, four-digit LED display Three levels of alarm Large LED alarm indicators Internal relay contacts Failsafe fault relay output Diagnostics that appear on the display Audible alarm Standard 4-20 mA analog output – 2-wire

4. Enclosure Design Common enclosure for all gases / applications Rugged 14 gauge steel NEMA 4X design Epoxy-coated paint Gas Type identified on front panel Sensor is bottom-mounted

5. Audible Alarm Options 70 db Piezo Buzzer Alarm 85 db Federal horn option All alarms are flush and side mounted Horn reset switch is front mounted

6. Visual Alarm Options Red and Yellow Alarms are available Strobes are Top-Mounted

7. Relay Outputs Normally-energized Form C fault relay FAULT, CAUTION, WARNING and ALARM relays Selectable latching or non-Latching operation 5 amp @ 120 VAC contact rating

8. Design and Operation Designed with the sensor mounted external to the enclosure ●Easily replaced by simply unscrewing the sensor housing and removing the plug-in sensor Factory calibrated ●Ready for installation and immediate operation Uniquely designed ●Eliminates all potentiometers or any other type of internal adjustment Shipped with a unique Sensorgard ●Protects the sensor from dirt, water, etc., while allowing gas to penetrate into the unit ●Acts as a baffle in windy environments

9. Gases Gas TypeRangeMinimum Detectability Carbon Monoxide - CO0-100 ppm1 ppm Carbon Monoxide - CO0-500 ppm2 ppm Oxygen - O 2 0-25%0.10% Hydrogen Sulfide - H 2 S 0-10 ppm 0.1 ppm Hydrogen Sulfide - H 2 S0-50 ppm0.1 ppm Hydrogen Sulfide - H 2 S0-100 ppm1 ppm Chlorine - CL 2 0-5 ppm0.1 ppm Chlorine Dioxide - CLO 2 0-3 ppm0.1 ppm Sulfur Dioxide - SO 2 0-25 ppm1 ppm Nitric Oxide - NO0-100 ppm1 ppm Nitrogen Dioxide - NO 2 0-10 ppm0.1 ppm Hydrogen Cyanide - HCN0-50 ppm1 ppm Hydrogen Chloride - HCL0-50 ppm1 ppm Ethylene Oxide - ETO0-10 ppm0.1 ppm Combustible Gas – Natural Gas and H 2 0-100% LEL1% LEL Combustible Gas – Petroleum Vapors0-100% LEL1% LEL Combustible Gas – Solvents0-100% LEL1% LEL Volatile Organic Compounds0-1500 ppm1 ppm

10. Advanced Features Date of last successful calibration recorded within the Monitor “Replace Sensor” indication when sensor nears its end-of-life Real-time clock for time and date stamping of events Logging of minimum, maximum and average gas concentrations over predetermined time intervals Selectable lock-out of output signals during calibration to inhibit alarms and control actions

11. Calibration Internal keypad or non-intrusive initiation No manual adjustments Programmable Calibration documented

12. Calibrator Simple 3-button operation: Zero Calibrate Address

13. Controller Set alarm levels Change span-gas values Display date of last calibration Display minimum, maximum and average gas values Accesses all features:

14. Internal Pump Sampling Pump Allows sample draw up to 150 ft. from the Monitor

15. Standard Bottom Mount Sensor 70 db Piezo Buzzer Alarm Diffusion Sampling NEMA 4X Metal Enclosure

16. SD2 Bottom Mount Sensor 70 db Piezo Buzzer Alarm Diffusion Sampling No Internal Relays NEMA 4X Metal Enclosure Class I, Division 2 Groups B,C,D

17. Plus Bottom Mount Sensor 85 db Federal Alarm Horn Diffusion Sampling NEMA 4X Metal Enclosure Two top-mounted strobes (Yellow and Red) are activated from the Warning and Alarm Levels

18. Advanced Bottom Mount Sensor 85 db Federal Alarm Horn Internal Pump sampling system for remote sample draw NEMA 4X Metal Enclosure Two top-mounted strobes (Yellow and Red) are activated from the Warning and Alarm Levels

19. Applications Refineries Chemical and Petrochemical Facilities Steel Mills Water and Wastewater Mining General Industry