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  5. Operating Instructions Manual

Ecom MA 400 Operating Instructions Manual

Summary of MA 400

  • Page 1

    Ma 400 bedienungsanleitung operating instructions notice d‘utilisation bal ma 400.Indd 1 28.11.2005 10:17:43 uhr.

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    15 table of contents 1. Introduction 16 1.1 repairs 16 1. Safety information 16 . Overview 19 3. Getting started 19 3.1. Battery save feature 19 3. Hart™ resistor setup 0 4. Basic operating modes 0 4.1 milliamp source 1 4. Milliamp simulation 4.3 milliamp measure 3 4.4 milliamp measure with loop pow...

  • Page 3

    16 1. Introduction the ma 400 is designed to be a complete 4 to 0ma current calibrator for both troubleshooting and calibrating current loops. Very high accuracy combined with several unique features makes the ma 400 an easy to use and highly flexible calibration tool. The ma 400 can source, simulat...

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    17 battery ce complies with european union directives dc double insulated electric shock fuse pe ground hot surface (burn hazard) read the user’s manual (important information) off on canadian standards association the following definitions apply to the terms “warning” and “caution”. - “warning” ide...

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    18 m warning to avoid possible electric shock or personal injury: - do not apply more than the rated voltage. See specifications for supported ranges. - follow all equipment safety procedures. - do not use the calibrator if it is damaged. Before you use the calibrator, inspect the case. Look for cra...

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    19 2. Overview figure 1 3. Getting started 3.1 battery save feature after unpacking the ma 400, it should be ready for use. A 9 volt alkaline battery comes preinstalled. The “battery save” feature is enabled and set to 30 minutes in case the unit is accidentally turned on in transit. The battery sav...

  • Page 7

    0 3.2 hart ™ resistor setup the ma 400 incorporates an internal 50 ohm resistor to facilitate using a rosemount 75 communicator during calibration or installation of hart™ transmitters. The internal resistor takes the place of the 50 ohm resistor normally installed during the use of the model 75 com...

  • Page 8

    1 4.1 milliamp source figure 3 shows a typical application where the ma 400 is sourcing 4 to 0 ma into a device under test. Figure 3 - sourcing 4 to 20 ma 1) turn on the ma 400. It will default to the ma source mode. ) connect the device to be calibrated. Note: the loop must be closed for the ma 400...

  • Page 9

    4.2 milliamp simulation figure 4 shows how to connect the ma 400 to act as a two-wire transmitter using an external power supply. In this application the power for the loop comes from the external supply and the ma 400 simply controls the current flow through the loop. The procedure for controlling ...

  • Page 10

    3 4.3 milliamp measure figure 5 shows how to connect the ma 400 to measure a 4-0 ma loop. In this application the ma 400 is simply reading the loop current and displaying the current in ma on the main display. The lower (smaller) display area is showing percentage relative to a 4 to 0 ma span. 4.4 m...

  • Page 11

    4 4.5 voltage measure figure 6 shows how to connect the ma 400 to measure dc voltage up to 8 volts. To activate the volts measure function simply press the key to toggle through the functions until the volts measure mode is reached. The input impedance of the ma 400 ≥1 meg ohm while in this mode. Fi...

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    5 5.2 percent error mode this unique feature will calculate error as a percentage of span (4 ma to 0 ma yields a 16 ma span). The percent error feature allows the user to “zero out” the %ma display so that the deviation from the ideal value can be displayed on the % error display. The procedure is a...

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    6 7. Specifications input range ma: 0.000 to 4.000 ma –5.00% to 15.00% output range ma source/simulate: 0.000 to 4.000 ma –5.00% to 15.00% read vdc: 0 to 30 vdc accuracy: ±0.015% of reading ± counts resolution: 0.001 ma; 0.001 volts loop supply voltage: 4 vdc typical drive capability: 100 Ω w/o hart...

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    7 8. Warranty and liability under the general terms and conditions of business, ecom instruments gmbh offers a -year warranty for function and materials on this product under the specified operating and maintenance conditions. Not covered are all wearing parts (e.G. Batteries, sensors, displays, lam...

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    Ecom instruments gmbh industriestraße 2 97959 assamstadt / germany tel.: +49 (0) 62 94 / 42 24 0 fax: +49 (0) 62 94 / 42 24 90 e-mail: sales@ecom-ex.Com internet: www.Ecom-ex.Com 5080al01a00 1 1/05 Änderungen vorbehalten · subject to change without notice! Bal ma 400.Indd 41 28.11.2005 10:18:10 uhr.