MICROPROCESSOR BASED MULTI-LOOP PID TEMPERATURE CONTROLLER - AF18

MICROPROCESSOR BASED MULTI-LOOP PID TEMPERATURE CONTROLLER

AF18 temperature controller is capable of measuring and controlling four channels of temperature, and every channelcan define its own input specification. It can either work independently or cooperate with computer or PLC (Programmable Logic Controller).

Main Features.

• Providing up to four channels of configurable inputs, and supporting multiple thermocouple inputs with auto reference junction compensation and linear voltage (mV) inputs with user defined scale. Every channel has its own digital filtering and can adjust its filtering degree.
• High performance hardware design, which greatly decreased temperature drift and the interference among the four channels. Therefore, this multi-channel instrument obtains the same measurement accuracy and anti-interference ability as that of single channel instrument.
• Every channel has independent high/low alarms, and the alarms can be allocated to different alarm outputs or to the same alarm output .
• Friendly and customized operating interface leads to easy learning and simple manipulation. Up to 12 parameters can be promoted to immediate operator access in Field Parameter Table.
• Advanced communication functions, compatible with the communication protocol of other AI series instruments. One AF18 communicates with the host computer the same as four independent controllers.
• Universal power supply of 100-240VAC or 24VDC.
• ISO9001 and CE certified and satisfied with EMC standard, achieving world class level of quality, anti-interference ability and safety. The power and all I/O terminals passed 4KV/5KHz EFT test, and the instrument can work stably under interference.

Technical Specification of The Temperature Controller:

• Input type:
  Thermocouple: K, S, R, E, J, T, B, N, WRe5-WRe26
  Linear voltage: 0~20mV, 0~60mV, 0~100mV, 0~1V, etc.
• Instrument Input range
  K(0˜1300°c ), S(0˜1700°c ), R(0˜1700 °c), T( -200˜+350°c ), E(0˜1000 °c),
  J(0˜1200 °c), B(0˜1800°c ), N(0 ˜1300°c ), WRe5 -WRe26(0˜2300°c )
  Linear Input: -9990~+30000 units defined by user.
• Measurement accuracy : 0.2%FS ± 0.1°c
  Note 1: For thermocouple input with internal compensation, cold junction compensation error up to 1 °c
  should be considered.
  Note 2: B thermocouple can obtain the above measurement accuracy only at the range of 600~1800°c .
  If B type thermocouple apply to measure temperature at 60-600°c will cannot obtain accuracy.
• Sampling rate: 250ms .
• Control period : 0.48 sec / 4 channels .
• Output : SSR voltage, 12VDC/20mA each channel .
• Temperature shift : ≤0.01%FS /°c (typical value is 60ppm/°c )
• Electromagnetic compatibility (EMC) : ±4KV/5KHz according to IEC61000-4-4;
  4KV according to IEC61000-4-5.
• Isolation withstanding voltage : Between power, relay contact or signal terminal ≥2300VDC;
  Between SSR voltage output and thermocouple input ≥600VDC .
• Power supply : 100~240VAC, -15%, +10% / 50Hz; 120~240VDC; or 5VA.