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| N-8000 Series intelligent digital display temperature controller |
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Overview:
N-8000 series digital display controller is an intelligent digital display controller with auto-tuning function developed by our company. This series of instrument adopts the advanced techniques and crafts of the single chip, SMT surface paste mounting, switch power supply, dual-channel PID auto-tuning algorithm, electromagnetism compatible design, etc. |
| Features: |
1. Adopting large display screen, the insert depth of the instrument is 105 mm and the size of surface panel meets the criterion of IEC.
2. Adopting the forward-insert assemble structure manufactured by high elasticity, metal shrapnel, replacing instrument is convenient.
3. Adopt SMT technology, switch power supply, dual-channel PID auto-tuning algorithm, electromagnetism compatible design with the combination of hardware and software.
4. Acquire the title of "National Major-Product in year 2000" gloriously.
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| Primary technical characteristics |
Input signal |
Thermocouple: S, K, E, B, J, T, Wu-Re3-25
Resistance thermometer sensor: Pt100, Cu50
Linear signal: 0-10mV, 0-50 mV, 0-10 mV, 4-20 mV |
Measurement error |
¨Q¡À0.5%F.S¡À1dig |
Control type |
On-off, time proportional, on-off PID, dual-channel (heating/ cooling) on-off PID |
Dead band of the on-off control |
0.4-99.9¡æ |
Range of the P.I.D parameters for user¡¯s selecting |
The proportional band for heating P=0~range of measurement (if P=0, the control is in on-off type)
Integrated time I=0~3600s (if I=0, the control is in PD type)
The proportional band in cooling side P=10~1000% (Relative to the proportional band in heating side) |
Data retention time |
10 years |
Control output (The maximum no. of channels is two: heating and cooling) |
Contact type:3A/250VAC(for resistance load)
Level type (for driving SSR or control logic circuit):12VDC/30mA
Standard current type: 0~10mA(¡Ü1k¦¸ or 4~20Ma(500¦¸) |
Alarm output (The maximum no. of channels is two) |
Contact capability:3A/250VAC(for resistance load) |
Power supply |
85~264VAC 50~60Hz |
Power consumption |
¡Ü5VA |
Anti-disturbance capability |
¡Ý3 class (IEC-61000-4) |
Usage environment |
Temperature 0~50¡æ, relative humidity¡Ü85%, without corrosion and conductive dust |
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| Model Series: |
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| Arrangement of instrument surface panel: |
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Note: Take the surface panel of ND-8000 model a an example, it is largely identical but with minor differences for other models.
1. (PV) Display (red)
Display measurement value
Display variety of prompt symbol according to the instrument status
2. (SP) Display (green)
Display set point
Display variety of parameters according to the instrument status
3. Indicators
Auto-tuning indicator (AT) (green), twinkle at operating
Control output indicator (OUT1) (green), bright at operating output
Cooling control output indicator (OUT2) (green), bright at operating output
Alarm output indicator (ALM) (red), bright at operating output
Twinkle at continuous output in its range (OUT1) (green)
4. Function key
Call out, update and confirm the parameters
5-6. Digit adjusting or auto-turning entering key
Used to adjust digits and enter into the auto-turning statue |
| Instrument wiring |
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