Yokogawa 3088-21 Hybrid Recorder

The Yokogawa 3088-21 Hybrid Recorder is a microprocessor-controlled multi-channel data acquisition and recording instrument designed for industrial process monitoring and control. It accepts inputs from up to 30 channels, processes DC voltage, thermocouple, and RTD signals, and outputs simultaneous analog trace and digital data printouts in six distinct colors via a high-speed wire-dot printer. The unIt has programmable control over full-scale ranges, chart speeds, alarms, and clock settings through a front-panel keyboard, enabling efficient multi-channel data analysis across diverse industrial automation applications.

Technical Specifications

• Input Channels: Up to 30 channels


• Input Types: DC voltage, JIS Type K/J/E/T/R thermocouples, ANSI/DIN/JIS thermocouple standards, resistance bulbs (RTD)


• Thermocouple Accuracy: ±0.25% of span or less; compensation accuracy of ±0.5°C (K, E, J, T types) and ±1°C (R type)


• Input Impedance: Voltage/TC: 2 kΩ or less; RTD: 10 Ω or less per wire; voltage divider: approximately 1 MΩ (2–50 V)


• Maximum Input Voltage (Continuous): 20 V DC for ranges less than 2 V DC; 100 V DC for ranges 20–50 V DC


• Line Voltage: 110 V, 115 V, 200 V, or 230 V AC, 50/60 Hz


• Chart Speed: Selectable from 1 to 999 mm/h


• Recording Width: 250 mm (calibrated); 40 mm left and right margins


• Battery Life: Approximately six months

Key Features

• High-speed wire-dot printer with six distinct color output


• Digital printout (blue): month, day, hours, minutes, channel number, and channel value at 1-, 2-, 4-, or 12-hour intervals


• Analog printout (six colors): channel value and identification numbering


• Alarm printout (red): relay number, H/L designation, and time of out-of-limit occurrence


• FAIL lamp indicates error condition with rear-panel contact output


• BAT ALARM lamp indicates low battery status


• Optional IEEE 488-1975 (GPIB) interface support

Typical Applications Process temperature monitoring, multi-parameter data logging, industrial automation control systems, and alarm-driven event recording across chemical, manufacturing, and thermal process industries.

Compatibility & Integration Component suitable for integration into industrial automation systems. IEEE 488-1975 (GPIB) interface available for remote communication and expanded system applications.