XM718/XM718P series heating / cooling dual control PID regulating instrument adopts a number of international advanced technologies, with 100~240VAC wide range input of switch power supply, input adopts digital correction and self-calibration technology, accurate and stable measurement, eliminating temperature drift and time drift caused by measurement errors. The instrument is fully using surface mount technology and adopts multiple protection and isolation design, with strong anti-interference ability and high reliability.
About this manual
The XM718/XM718P series PID controller provides dual heating and cooling control with a wide 100‑240 VAC input range and precise measurement of temperature, humidity, pressure, level and flow. It features a surface‑mount design, multiple protection and isolation schemes, and supports various sensor types such as thermocouples, RTDs and voltage/current inputs.
The manual describes the instrument’s technical specifications, wiring diagrams, parameter configuration procedures, alarm settings, and methods to reduce electrical interference. It also explains the PID control modes, output options, and system functions for both single‑ and dual‑output operation. This manual is written in Chinese.
What's inside
- Overview
- Technical Specifications
- Instrument Parameter Description
- Alarm Setting Parameters
- Input Display Control Parameters
- System Function Parameters
- Run Status and Power‑up Handling
- Program Arrangement and Operation
- Interference Reduction Measures
Specifications
| Input voltage range | 100‑240 VAC |
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| Supported thermocouple types | K, S, E, J, T, B, N |
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| Supported RTD types | Pt100, Cu50 |
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| Measurement range | -1999 ~ +9999 |
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| Measurement accuracy (thermocouple) | ±0.5 % FS |
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| Alarm output type | Relay contact (NO/NC) 220 VAC/2 A or 24 VDC/2 A |
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| Control output voltage range | 0‑5 V (or 1‑5 V) |
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| Control output current range | 0‑10 mA, 4‑20 mA, 0‑20 mA |
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| Power supply | Switching supply 100‑240 VAC, 24 VDC |
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| Weight | ≈1000 g |
Frequently asked questions
How do you enter parameter setting mode?
Press and hold the SET key for more than two seconds; the instrument will display the parameter name and allow editing.
How can the cold‑junction compensation be disabled?
Short J13 and J15 (or J4 and J15 for resistance sampling) with a jumper to bypass the internal compensation circuit.
What does the ALP parameter control?
ALP defines the alarm output source for upper, lower, positive‑bias and negative‑bias alarms; each digit selects AL1 or AL2 as the output.