General technical specifications of the ALMEMO® Measuring Instruments

Product catalog summary

Overview of ALMEMO® Measuring Instruments

Introduction
This document provides a comprehensive overview of ALMEMO® measuring instruments, highlighting their specifications, functionalities, and applications. It covers various models, detailing their precision classes, measuring rates, and sensor compatibility.

Instrument Categories

Compact Measuring Instruments: ALMEMO® 2450-1L is designed for basic applications with a precision class of C and a measuring rate of 2.5 mops.
Basic Measuring Instruments: Models such as ALMEMO® 2490-1A and 2490-2A offer enhanced functionalities with a precision class of B and a measuring rate of 10 mops.
Professional Measuring Instruments: ALMEMO® 202-S V7 and 204 V7 are intended for advanced applications, providing high precision and optional features.
Precision Measuring Instruments: High-end models like ALMEMO® 104 V7 and 710 V7 deliver superior accuracy and high measuring rates up to 2000 mops.
Reference Measuring Instruments: ALMEMO® 1020-2 X6 and others are used for calibration and reference purposes, featuring precision class AS.

ALMEMO® Plug Technology

Standard Plugs: These allow processing of multiple channels per input and are suitable for various sensor types.
D6 Plugs: These digital sensors come with integrated A/D converters, ensuring high accuracy and easy calibration.
D7 Plugs: Advanced digital plugs that offer independent measurement ranges and high-speed operations.

Technical Specifications

Inputs: Details on channel switching, potential separation, and cold junction compensation.
Measuring Rates: Options for standard and high-speed operations, with specific conditions for optimal performance.
Environmental Conditions: Operating and storage temperature ranges for different device types.

Sensor Compatibility
The document lists compatible sensors, including temperature detectors, thermocouples, flow sensors, chemical probes, and optical radiation sensors, along with their respective measuring ranges and accuracies.

Conclusion
ALMEMO® measuring instruments provide a wide range of functionalities and precision levels, suitable for various industrial and scientific applications. The integration of advanced plug technologies enhances their versatility and accuracy.

Specifications

Transducer: Model FW Axxx, measuring range from 0.0 to 150.00 mm with a precision of 0.01 mm.
Angle Sensor: Model FW Axxx, measuring range from 0 to 180° with a precision of 0.1° and an accuracy of 0.2% Full Scale.
Tachometer: Model FU A919-2, measuring range from 8 to 30000 rpm with a precision of 1 rpm.

Function Values

Includes differential, maximum, minimum, average value over time, average value over measuring point, and summation over measuring points.
Total number of pulses and pulses per print cycle: Model ZA 9909-AK2U, range from 0 to 65000.
Alarm value range: 0.0 to 100.00%.

Additional Parameters

Thermal coefficient and Wet-bulb globe temperature (WBGT) formula provided.
Cold junction temperature measurement in °C.
Volume flow measurement range from 0 to 65000 m3/h with a precision of 1 m3/h.

Notes

Technical changes may be made as of June 2026.

Catalog excerpts

General technical specifications of the ALMEMO® Measuring Instruments-1

logge Data uring Meas Compact measuring instrument ALMEMO® 2450-1L Basic measuring instrument ALMEMO® 2490-1A ALMEMO® 2490-2A Professional measuring instrument ALMEMO® 202-S V7 2 ® 4 ALMEMO 204 V7 ALMEMO® 2470-1S/-SCRH ALMEMO® 2470-2S ALMEMO® 2470-2 Precision measuring instrument ALMEMO® 104 V7 Basic device (transmitter) ALMEMO® 2490-1R02U ALMEMO® 2490-2R02U Reference measuring instrument ALMEMO® 1020-2 X6 ALMEMO® 1030-2 X6 ALMEMO® 1033-2 X6

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General technical specifications of the ALMEMO® Measuring Instruments-2

ALMEMO® input connector, also for existing sensors, see chapter ALMEMO® input connectors. ALMEMO® standard plug • The ALMEMO® measuring system makes it possible to process four channels per measuring input - depending on the sensor and the measuring instrument. • The ALMEMO® plug incorporates 6 screw terminals - 2 for the sensor‘s power supply and 4 for its measuring signal. • With Pt100 sensors using 4-conductor circuitry all 4 free connections will be required for the measuring signal. Only one sensor of this type can be connected therefore per measuring input. • Electrical signals only require...

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General technical specifications of the ALMEMO® Measuring Instruments-3

Channel switching between input sockets for analog sensors Cold junction compensation (CJC) Nominal temperature Sensor power supply Self-calibration Monitoring functions 11/2025 • We reserve the right to make technical changes. 4-contact with photo-MOS relays Potential separation maximum 50 V Measuring modules with higher potential separation (see chapter „Input modules“) Offset voltage < 5 pV Effective in range -30 to +100 °C, Accuracy ±0.2 K (±0.01 K / °C) 6 to 12 V depending on power supply Automatic zero-point correction, measuring current calibration Automatic sensor recognition and sensor...

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General technical specifications of the ALMEMO® Measuring Instruments-4

Sensor type Type Resistance temperature detectors: Pt100 / Pt1000 -1 4-wire FP Axxx Pt100 / Pt1000 -2 4-wire FP Axxx Ni100/1000 4-wire NTC type N FN Axxx NiCrSi-NiSi (N) Fe-CuNi (L) Fe-CuNi (J) Cu-CuNi (U) Cu-CuNi (T) PtRh10-Pt (S) PtRh13-Pt (R) PtRh30-PtRh6 (B) AuFe-Cr Electrical and digital signals: For measuring bridges Supply 5 V (Example) -26.0 to For potentiometers Supply 2.5 V -2.6 to Volts DC (sampling rate 1 kHz) (Example) 0 to Ampere DC (sampling rate 1 kHz) (Example) 0 to Milliamperes DC -32.0 to Pulses / measuring cycle 0 to Measuring Instruments Units Resolution Linearization Connector...

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General technical specifications of the ALMEMO® Measuring Instruments-5

Sensor type Type Flow sensors Rot. vane, snap-on head FV AD15-Sx (e.g.) Rotating vane Macro FV AD15-MA1 Water turbine FV AD15-WM1 Dynamic pressure sensor FD A602-S1K Dynamic pressure sensor FD A602-S6 Hot-wire anemometer FV A935-TH4 Hot-wire anemometer FV A935-TH5 Hot-wire anemometer FV A605-TA1 Hot-wire anemometer FV A605-TA5 Measuring Units Resolution Chemical probes Conductivity FY A641-LF (e.g.) 0 to 20.000 mS 0.001 mS ±0.2 % of measured value Optical radiation (Examples) Other connectable sensors / transducers (Examples) Heat flow plates FQ Axxx -260.0 to +260.0 mV 0.01 mV - Moisture content...

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