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Analogue & Digital

Data Acquisition is a process of acquiring analogue signals from one or more transducers and converting the sampled signals into digital numeric values which can be manipulated by a computer. Therefore, transducers sensing physical phenomena convert parameters to raw electrical signals, while signal conditioning circuitry improves the linearity of the raw signals so that they can be accurately converted to digital values. An Analogue-to-Digital converter (ADC) formats the sampled signals into digital values to enable computer reading, software analysis and network communications. The analogue-to-digital converter is considered as the key device of a Data Acquisition System (DAS or DAQ).

A Data Logger is a data acquisition system that doesn’t rely on a computer for the initial storage of data and can range from 1 or 2 channels to complex multi-channel instruments.

Validyne Universal Data Acquisition System(UDAS)• Direct Sensor Input to Your PC via USB • 16-bit Resolution, 100 KHz Conversion Rate • 16 Input Channels, Sensor Excitation Provided • Auto-Zero Capability for Better Accuracy • Accepts Any Mix or Combination of Sensor Inputs Thermocouples, RTDs Strain Gages, LVDTs, VR Sensors Potentiometers, DC Volts • Data Acquisition Software Included

ProductsMeasuring rangesA/D converterProtection classMeasured value memoryOperating temperature
ALMEMO® 2450, Base model Measuring Instrument, Compact, 1 Input (4 channels)35Delta-sigma, 15 bit resolutionIP54-10 to +60 ℃
ALMEMO® 2470 Universal Datalogger with Colour screen alarms for limit value monitoring, Compact>=65Delta-sigma, 24bit resolution, low power, 2,2.5, or 10 mopsIP54Up to 100,000 internal or 30 million values with external SD card-10 to +60 ℃
ALMEMO® 2490, Measuring Instrument, Compact, 1 or 2 inputs (up to 8 channels)>=65*Delta-sigma, 16 bit resolutionIP54100 manually logged-10 to +60 ℃
ALMEMO® 2590 Universal Datalogger, Compact, 2~4 inputs (up to 20 channels)>=65Delta-sigma, 16 bit resolution, 2.5 or 10 mopsIP5412,000 and options to plug SD card-10 to +60 ℃
ALMEMO® 2690, Multi-function Datalogger, handheld, 5 inputs (up to 24 channels)>=65Delta-sigma, 24 bit resolution, Low power, Up to 100 mopsIP54Internal EEPROM for 200,000 values and options to plug SD card-10 to +60 ℃
ALMEMO® 2890, Multi-function Datalogger, handheld, 9 inputs (up to 40 channels)>=65Delta-sigma, 24 bit resolutionEEPROM for 100,000 values-10 to +60 ℃
ALMEMO® 5690, Universal DAQ with Plug-in boards, from 9 to 99 inputs (up to 99 channels)>=65Delta-sigma, 24 bit resolutionInternal 512-KB EEPROM 100,000 values-10 to +60 ℃
ALMEMO® 5790, Industrial housing with IP 65, Universal datalogger, up to 29 inputs>=65Delta-sigma, 24 bit resolutionIP65Internal 512-KB EEPROM 100,000 values-10 to +60 ℃
ALMEMO® 8590/8690, Universal Data acquisition module, 9 inputs (up to 40 channels)>=65Delta-sigma, 24 bit resolutionNone, optional Internal EEPROM for 100,000 values,or SD card-10 to +60 ℃
ALMEMO® 6290, Data logger with Built-in printer and ring memory, 2 inputs (up to 8 channels)>= 65Multi-slope integrating, 16 bit, prints 40 characters per line, 0.6 lines/sInternal 100,000 values-10 to +60 ℃
ALMEMO® 2790 Measuring instrument with integrated bluetooth, Compact, 1 input>=65*Delta-sigma, 16 bit resolutionIP54-10 to +60 ℃
N.B. All but some 2450 and 2490’s have 2 outputs (supporting optional bluetooth, RS232, USB, Ethernet, RS485, Networking, analogue output, trigger inputs)
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