RKI Air Alert Fixed Gas Transmitter Configuration:VOC 10.6 eV PID 0-100 ppm, AC Power, Local Display 1 × S051 calcium sensor

1 × S051 calcium sensor

Used with: YSI 900 chlorine colorimeter

add pH 4 or pH 10 for two- and three-point calibration when your samples sit toward either end of the scale

5 mg/L PO4 or 0

RKI Air Alert Fixed Gas Transmitter Configuration:VOC 10.6 eV PID 0-100 ppm, AC Power, Local Display 1 × S051 calcium sensorThe RKI Air Alert is a compact, wall mounted fixed gas transmitter using electrochemical, infrared, or PID sensor elements to cover 50+ gases from common toxics like CO, H2S, and NH3 to refrigerants, ozone, and VOCs. A clear polycarbonate window over 3 color alarm LEDs and an audible buzzer give local status at a glance, while both 4 20mA (3 wire) analog and RS 485 Modbus outputs integrate directly into a building automation or process control system.