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Fluke 2638A/20 Hydra Series III Data Acquisition Unit

Fluke authorised distributor and calibration house.

Includes: Fluke 2638A/20 Data Acquisition Unit / Data Logger: 20 universal channels. Includes one relay board (2638A-RLY) and one 2638A-100 connector.

£1,933.25 Save 5%
Tax excluded
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The Fluke Hydra Series III continues the Hydra Series legacy of precision, multi-channel data acquisition. The new Series III improves on Hydra's industry-leading thermocouple accuracy and adds a new dimension to how you collect and view data in a portable system. The 2638A is expandable from 22 to 66 channels of differential analog inputs. A flexible, 22-channel Universal Input Connector lets you connect and disconnect any type of input to any channel, quickly and easily. Selectable inputs include dc voltage, ac voltage, resistance, thermocouple, RTD, thermistor, frequency and dc and ac current.

With DC measurement accuracy of 0.0024 %, basic 0.5 °C thermocouple accuracy, full-color display, easy-to-use menu system and industrial safety ratings put the 2638A in a category of its own as a precision data acquisition system. The dedicated 6.5 digit digital multimeter (DMM) mode provides additional utility and value.

If you need to “zero” a large number of thermocouples to a known reference temperature before starting a temperature profiling or validation test, the 2638A will normalize all readings to your reference channel at the push of a button and store the offsets for reference in a supporting data file.

Power selection: Specify 100 V, 120 V, 220 V, 240 V power when ordering (power settings may be changed by the user).


DC accuracy of 0.0024%.
Thermocouple accuracy of 0.5°C.
Up to 66 universal differential isolated inputs.
On-screen color trend graphing of up to four channels at a time.
Easy-to-use menu system for setup and data management.
Input types: ac V, dc V, ac I, dc I, thermocouple, PRT (2, 3, 4 w), thermistor, resistance (2-4 w), frequency.
Multi-channel real-time data display.
6.5-digit bench DMM function for front-panel inputs.
Monitor function for real-time viewing and charting between scans.
20 on-board math channels.
One-button screen capture of chart or data displays.
45 channels/second basic dc scan rate.
Internal 57,000 scan/setup file memory.
USB flash drive support.
Data security features.
300 V CAT II input safety rated.

Fluke 2638A Hydra Series III Data Acquisition System Intro Video

Fluke 2638A Hydra Specifications
DC Volts Range: 100 MV to 300 V
Resolution: 0.1 µV to 1 mV
Accuracy:  0.0024%.
AC Volts Range: 100 mV to 300 V
Resolution: 0.1 µV to 1 mV
Accuracy: 0.11%.
Resistance Range: 100 Ω to 100 MΩ
Resolution: 0.1 mΩ to 100 Ω
Accuracy: 0.01%.
Frequency Range: 20 Hz to 1 MHz
Accuracy: 0.01%.
RTD (Pt 100) Range: -200 °C
Resolution: 0.001 °C
Accuracy: 0.016 °C.
J Thermocouples Range: -200 to 1,000
Resolution: 0.01 °C
Accuracy: 0.53 °C.
K Thermocouples Range: -200 °C to 1,000 °C
Resolution: 0.01 °C
Accuracy: 0.60 °C
T Thermocouples Range: -270 °C to 400 °C
Resolution: 0.01 °C
Accuracy: 0.62 °C.
Other Thermocouple types R, S, N, E, B, C, D, G, L, M, U, W.
General Specifications
Channel Capacity Analog inputs: 22 to 66 channels; 8  Digital I/O & 6 Alarm Outputs (TTL)
Totaliser: 1.
Power Voltage: 100 V to 264 A in 4 power model selections (100 V, 120 V, 220 V, 240 V)
Frequency: 47 Hz to 440 Hz (automatically sensed when turned on)
Power consumption: 34 V A peak (24 W average).
Communication LAN: 10/100 Mb TCPIP DHCP
Remote commands: SCPI command set.
Internal memory 57,000 scans, 1000 setup files.
File security Dual level, Administrator, five secure users, Guest status.
Alarm outputs 6 TTL alarm outputs -- assignable to one or multiple channels.
Alarm setpoints 2 assignable setpoints/channel, Hi Lo, Hi Hi, Lo Lo.
Language menus English, Chinese, French, German, Japanese, Korean, Portuguese, Russian, Spanish.
Temperature Operating: 0 °C to 50 °C
Storage: 20 °C to 70 °C
Warm-up: One hour to full uncertainty specifications.
Relative humidity (non-condensing) Operating: 0 °C to 28 °C <90%, 28 °C to 40 °C <75%, 40 °C to 50 °C <50%
Storage: 20 °C to 70 °C <95%.
Standard rack height 3U.
Dimensions 150 mm x 285 mm x 385 mm (5.91 in x 11.22 in x 15.16 in).
Weight 6 kg (13.2 lbs).
Fluke 2638A warranty 2 year.


Fluke 2836A Datasheet

PDF Specifications of the Fluke 2638A Hydra Data Acquisition System.

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