Overview
The ARTM-8L is a versatile multi-channel temperature measurement and control instrument that supports NTC thermistors, PT100/PT1000 RTDs, thermocouples (K, T, J, E, N types), and 0~5V voltage inputs. It monitors up to 8 temperature channels in real time, features 5 relay outputs, 3 analog 4-20mA outputs, and optional ambient temperature and humidity measurement. It is widely used for temperature monitoring of low-voltage electrical contacts, transformer windings, motor windings, and other industrial applications.
Highlight
Multi-Sensor Input Support
- NTC, PT100/PT1000, thermocouple
- 0~5V voltage input compatible
- Independent channel type config
High Accuracy Measurement
- NTC ±1°C, PT100 high precision
- Wide range: -200°C to 1372°C
- 0.1°C resolution, stable
Flexible Alarm & Control
- 5 relays, 5 alarms per channel
- High/low temp alarm, hysteresis
- Integrated T&H control (opt)
Easy Installation & Comm
- Panel or DIN rail mounting
- RS485 Modbus communication
- 3x 4-20mA analog outputs
Function
| Function | Description |
| Measurement Channels | 8 channels, independently configurable |
| Input Types | NTC, PT100/PT1000, Thermocouple (K,T,J,E,N), 0~5V |
| Accuracy | NTC: ±1°C; PT100: ±1°C (-200~200°C), ±1% (200~850°C); Thermocouple: 1%; 0~5V: 0.5% |
| Alarm Outputs | 5 relays, NO, AC250V/5A, DC30V/5A |
| Analog Outputs | 3 channels, 4-20mA (programmable) |
| Communication | RS485, Modbus-RTU, baud rate 2400-19200 bps |
| Display | LCD with backlight, menu-driven interface |
| Temperature & Humidity Input | 1 optional channel, ambient T: ±1°C, H: ±3% |
| Power Supply | AC85~265V or DC100-300V, ≤2W |
| Operating Environment | -20°C ~ +55°C, humidity ≤95% |
Specification
| Parameter | Value |
| Channels | 8 |
| Sensor Types | NTC (10k/50k/100k/30k), PT100, PT1000, Thermocouple K/T/J/E/N, 0-5V |
| Measurement Range | NTC: -40~140°C; PT100/1000: -200~850°C; Thermocouple: -200~1372°C; 0-5V: 0-5V |
| Accuracy | Refer to Function table |
| Alarm Outputs | 5 relays, NO, AC250V/5A, DC30V/5A |
| Analog Outputs | 3 channels, 4-20mA (load ≤500Ω) |
| Communication | RS485, Modbus-RTU, 2400/4800/9600/19200 bps |
| Power Supply | AC85~265V or DC100-300V, ≤2W |
| Display | 128×64 LCD with backlight |
| Temperature & Humidity Input | Optional, SHT series sensor |
| Mounting | Panel cutout (152mm×76mm) or DIN35 rail |
| Operating Temperature | -20°C ~ +55°C |
| Storage Temperature | -25°C ~ +70°C |
| Humidity | ≤95% non-condensing |
| Altitude | ≤2000m |
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Optional Accessories
- PT100 sensors (3-wire, 2m cable)
- NTC sensors (φ8/φ12, 2m/4m cable)
- Temperature & humidity sensor module
- DIN35 rail mounting accessories
FAQ
It supports NTC (10k/50k/100k/30k), PT100, PT1000, thermocouples (K, T, J, E, N), and 0~5V voltage inputs.
It has 5 relay outputs, all normally open, rated AC250V/5A or DC30V/5A.
Yes. An optional T&H sensor can be added, and control logic for heating, dehumidification, and ventilation can be configured, executed via relay outputs.
There are 3 analog outputs (4-20mA). Each can be independently assigned to any input channel, and the temperature range for 4mA and 20mA is programmable.
It uses Modbus-RTU protocol over RS485, with selectable baud rates: 2400, 4800, 9600, 19200 bps.
It supports panel mounting (cutout 152mm×76mm) and DIN35 rail mounting.
Summary
The ARTM-8L temperature monitoring instrument offers a comprehensive solution for industrial temperature supervision with 8 flexible channels, compatibility with multiple sensor types, high accuracy, rich alarm and analog outputs, and optional temperature & humidity control. Its panel or DIN rail mounting and RS485 communication make it easy to integrate into low-voltage distribution systems, motor/transformer protection, and automation projects.
