9 Instrumentation Units for Process Monitoring and Control-Namely, Data Recorders, Recording Controllers, Recording Alarms, Indicators, Indicating Controllers, Temperature Controllers, Program Controllers, Program Setters, Thermometers, Temperature Sensors, Radiation Thermometers, Thyristor Regulators, Converters, Humidity Meters and Monitoring Systems Comprising Scanners, Indicators, Alarms, Recorders, Printers, Computer Interface, Level Meters, Pressure Indicating Transmitters and Infrared Moisture Meters