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v0.7.30© 2026 Onmeas Ltd.
ATQ49XX SeriesNew
200-Channel Temperature Recorder
Series products
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Temperature Tester
Multi-Channel Temperature Tester
ATQ49XX 系列
ATQ4900(英)正
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ATQ4900背面
ATQ49XXSeries

200-Channel Temperature Recorder

NewContains 2 productsCategoryMulti-Channel Temperature Tester

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.

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Specifications

ParameterATQ4901ATQ4900
Basic Parameters
Number of Channels20 to 200 channels (20 channels per module), configure modules according to channel requirements, up to 10 modulesTemperature/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 TypeThermocouple 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
Resolution0.01°C
Scan SpeedFast 500 ms, slow 1 sVoltage/Current: Fast 500ms, Slow 1s; Low Resistance: 60ms/channel (manual range)
CalibrationPer-channel error correction
Test Terminal VoltageChannel-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 CompensationAccuracy 0.5°C
Other FunctionsFull-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 memoryComparator: 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
DimensionsInstrument Dimensions-
Package Dimensions-
WeightNet Weight8 kg10kg
Gross Weight-
Power RequirementsVoltage: 100V-240VAC, Frequency: 47.5-52.5Hz, Power: max 10VAVoltage: 100-240VAC; Frequency: 47.5-52.5Hz; Power: Max 10VA
InterfaceLAN interface, Type-C communication interface, RS-232 interface and USB interface, optional RS485 interfaceLAN, TYPE-C communication, RS-232, and USB interfaces; Optional RS485 interface available
OtherThermocouple length 2 meters (thermocouples corresponding to channel count included with device); Type-C communication cable; data acquisition software2m thermocouples (included with the instrument, quantity matches channel count); TYPE-C communication cable; Data acquisition software

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200-Channel Temperature Recorder
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CategoryMulti-Channel Temperature Tester