The newly upgraded ATQ4900 series multi-channel temperature tester is controlled by a high-performance ARM9 microprocessor with real-time high-speed data acquisition. It features a 7-inch high-brightness capacitive touch screen with full touch operation plus auxiliary function keys, running the seventh version of the Onmeas ATOS operating system for easier, smarter use. A Chinese/English interface displays measurement data and curve graphs in real time.
The newly designed ATQ4900 series uses USB Type-C communication with USB flash drive mapping, with optional RS-232/RS-485/CAN/LAN. A real-time FPGA circuit breaks through sampling rate limits and, combined with efficient high-precision analogue circuitry, achieves high accuracy and ultra-fast sampling with temperature resolution improved to 0.01 °C.
The instrument has a built-in LAN interface, RS-232C and USB232 interfaces and can be fitted with an optional RS-485 interface, allowing control and data acquisition from a computer for effective remote control, data acquisition and analysis.
| Parameter | ATQ4901 | ATQ4900 | |
|---|---|---|---|
| Basic Parameters | |||
| Number of Channels | 20 to 200 channels (20 channels per module), configure modules according to channel requirements, up to 10 modules | Temperature/Voltage/Low Resistance: 100 channels (10 channels per module); Current: 50 channels (5 channels per module); Up to 10 modules configurable based on requirements | |
| Thermocouple Type | Thermocouple types J/K/T/E/S/N/B/R; newly supports PT100; PT1000 (optional) | Thermocouple J/K/T/E/S/N/B/R; Voltage; Low Resistance; Current | |
| Resolution | 0.01°C | ||
| Scan Speed | Fast 500 ms, slow 1 s | Voltage/Current: Fast 500ms, Slow 1s; Low Resistance: 60ms/channel (manual range) | |
| Calibration | Per-channel error correction | ||
| Test Terminal Voltage | Channel-to-channel isolation voltage: DC 350V, AC 230V (for temperature measurement only) | Channel-to-channel isolation voltage: 350VDC, 230VAC (temperature acquisition only) | |
| Test Range | -200°C to 1800°C (test range varies depending on sensor type) | Temperature: -200°C to 1800°C; Low Resistance: 1μΩ to 200kΩ; Current: 0 to 5A (minimum resolution 0.001mA); Voltage: 100.00V 0.05%; 10.000V 0.05%; 1.0000V 0.05%; 100.00mV 0.1% (Test range varies depending on sensor type) | |
| Basic Accuracy | ±0.2% ±2 digits (excluding thermocouple) | ||
| Cold Junction Compensation | Accuracy 0.5°C | ||
| Other Functions | Full-touch mirror panel; thermocouple break detection; displays numerical values, temperature bar graphs, and temperature curves; shows upper limit, lower limit, and average values; standard 64GB large memory | Comparator: High/Low alarm; Independent high/low limit settings per channel; Buzzer: On/Off; Display: Full-touch mirror panel with numerical values, temperature bar graph, and temperature curve; Upper/lower limit and average value display; Standard 64GB built-in memory; Open thermocouple detection | |
| General Parameters | |||
| Dimensions | Instrument Dimensions | - | |
| Package Dimensions | - | ||
| Weight | Net Weight | 8 kg | 10kg |
| Gross Weight | - | ||
| Power Requirements | Voltage: 100V-240VAC, Frequency: 47.5-52.5Hz, Power: max 10VA | Voltage: 100-240VAC; Frequency: 47.5-52.5Hz; Power: Max 10VA | |
| Interface | LAN interface, Type-C communication interface, RS-232 interface and USB interface, optional RS485 interface | LAN, TYPE-C communication, RS-232, and USB interfaces; Optional RS485 interface available | |
| Other | Thermocouple length 2 meters (thermocouples corresponding to channel count included with device); Type-C communication cable; data acquisition software | 2m thermocouples (included with the instrument, quantity matches channel count); TYPE-C communication cable; Data acquisition software | |