Economic measurement and control instrument quotation

Economic multi loop measurement and control instrumentsOverview

The AI-7xx8 series multi-channel testing and control instrument can provide 6 inputs of various types of thermocouples or two-wire heating resistors, as well as 4 inputs of three wire heating resistors; SSR solid-state relay voltage output; It can be used independently or in conjunction with a computer or programmable logic controller (PLC). This instrument can choose 24VDC or 100-240VAC power supply voltage, and has passed ISO9001 quality certification, with high reliability and compliance with EMC electromagnetic compatibility standards; Its power supply and all I/O terminals have passed the 6KV group pulse (EFT) anti-interference test, and can work reliably in strong interference environments. The application of Yudian's new generation technology enables multi-channel input to achieve the same accuracy and anti-interference ability as single channel measurement. The main functions of the instrument are as follows:

Supports up to 6 programmable measurement input circuits, including PT100, Cu50, K, S, E, J, B, N, T, WRe5-WRe26, and other specifications of inputs. The thermocouple automatically compensates for cold ends. Input digital correction, each input circuit has digital filtering, and the filtering strength can be independently adjusted or cancelled.

By using high-performance components, temperature drift is greatly reduced and mutual interference between channels is minimized, resulting in multi-channel measurements reaching a level of accuracy and anti-interference performance comparable to single channel measuring instruments.

Each circuit of the instrument can independently set upper, lower, or deviation alarm output functions, and its alarm output position (AL1 or AL2) can be programmed. The upper or lower limit alarm signals of different input circuits can be programmed to be output from the same alarm channel or from different channels.

● With 12 on-site parameter settings, users can customize the instrument according to their own usage habits.

● Equipped with computer communication function, supporting Yudian AIBUS and MODBUS protocols.

Economic multi loop measurement and control instrumentsTechnical specifications

● Input specifications:

Thermocouples: K, S, R, E, J, T, B, N, etc;

Thermal resistance: PT100, etc;

Measurement range: K (-200~+1300 ℃), S (-50~+1700 ℃), R (-50~+1700 ℃), T (-200~+350 ℃), E (0~+800 ℃), J (0~+1000 ℃), B (+200~+1800 ℃), N (0~+1300 ℃), WRe3~WRe25 (0~+2300 ℃), WRe5~WRe26 (0~+2300 ℃), PT100 (-200~+800 ℃)

Measurement accuracy: 0.15 level/0.2 level/0.25 level/0.3 level

Note 1: When using internal cold junction compensation for thermocouple input, an additional 1 ℃ cold junction compensation allowable error should be added.

Note 2: B-scale thermocouples can measure within the range of 60-600 ℃, but the accuracy cannot reach the calibration accuracy. Measurement accuracy can be guaranteed within 600-1800 ℃.

● Temperature drift: ≤ 0.01% FS/℃ (typical value is 60ppm/℃)

Electromagnetic compatibility: IEC61000-4-4 (electrical fast transient burst), ± 6KV/5KHz; IEC61000-4-5 (Surge), 6KV

● Isolation and voltage resistance: The power supply terminal, relay contact, and signal terminal are connected to each other with a voltage of ≥ 2300VDC; ≥ 600VDC between SSR voltage output and thermocouple input

Control cycle: 0.48 seconds

Power supply: 100~240VAC/50Hz or 24VDC+10%, -15%; 5VA

● Operating environment: Temperature -10~+60 ℃, humidity ≤ 90% R