METREL CS 2890 Instruction Manual
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METREL CS 2890 Instruction Manual

Power simulator / calibrator
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Power Simulator / Calibrator
CS 2890
Instruction manual
Version 1.4.2, Code No. 20 752 950

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Summary of Contents for METREL CS 2890

  • Page 1 Power Simulator / Calibrator CS 2890 Instruction manual Version 1.4.2, Code No. 20 752 950...
  • Page 2 Mark on your equipment certifies that it meets European Union requirements for EMC, LVD, ROHS regulations. © 2019 METREL No part of this publication may be reproduced or utilized in any form or by any means without permission in writing from METREL.

  • Page 3: Table Of Contents

    CS 2890 Power Simulator / Calibrator Table of contents Introduction......................9 Main Features ....................9 1.1.1 Power Simulator mode ................9 1.1.2 Calibrator mode ..................10 1.1.3 Adjustment of Metrel PQ instruments ............10 Safety considerations ..................11 Applicable standards ..................11 Abbreviations ....................
  • Page 4 4.12 Instrument memory (microSD card) ..............53 4.12.1 Save/Recall signal parameters ..............54 Instrument Usage – Power Simulator ..............57 Wiring of CS 2890 to Metrel’s PQ Analyser ............. 57 Simulation campaign ..................58 5.2.1 Step 1: Connection setup ................. 58 5.2.2...
  • Page 5 11.2 Service ......................86 12 Annex I – MI 2892 Calibration Certificate ............87 13 Annex II – CS 2890 Calibration Certificate ............93 Table 1: Power Calibrator/Simulator standard accessories .......... 15 Table 2: Description of General setup options ............... 16 Table 3: Keys in General setup menu ................
  • Page 6 Table 36: Keys in Swap connections screen ..............53 Table 37: SAVE/RECALL screen................... 55 Table 37: MI 2883 voltage calibration performed with CS 2890 (Uncertainty based on CS 2890 Calibration certificate) ..................63 Table 38: MI 2892 voltage calibration performed with CS 2890 (Uncertainty based on substandard Volt-meter Keysight 34461) ...............
  • Page 7 CS 2890 voltage output..18 Figure 10: Adjustment screen ..................19 Figure 11: CS 2890 Calibration certificate – voltage output ........... 20 Figure 12: Adjustment procedure using values from the calibration certificate ....20 Figure 13: Connection for the voltage adjustment procedure using substandard Volt- meter ..........................
  • Page 8 Figure 59: Transient settings submenu ................52 Figure 60: Change sequence submenu screen ............. 53 Figure 61: CS 2890 and MI 2892 connection – Power Simulator mode ......57 Figure 62: Recommended simulation practice ............... 58 Figure 63: Calibrator output terminals ................61 Figure 64: Connection for calibration voltage input L1 on MI 2893/MI 2892/MI 2885/MI 2883 ..........................

  • Page 9: Introduction

    Metrel Power Quality devices: MI 2883, MI 2885, MI 2892 and MI 2893. Figure 1: CS 2890 Power Simulator/Calibrator instrument 1.1 Main Features...

  • Page 10: Calibrator Mode

    Analyser: MI 2883/MI 2885/MI 2892/MI 2893: o 0,050-0,100-0,200-1,000-2,000V … (50A-100A-200A-1000A-2000A) Note:  calibration of Class S PQ Analysers: could be performed only with CS 2890 (uncertainty bellow 0.12%),  calibration of Class A PQ Analysers: could be performed by use of substandard Volt-meter with the accuracy class at least 0.05%.

  • Page 11: Safety Considerations

    CS 2890 Power Simulator / Calibrator Introduction 1.2 Safety considerations To ensure operator safety while using the Power Simulator/Calibrator instruments and to minimize the risk of damage to the instrument, please note the following general warnings: The instrument has been designed to ensure maximum operator safety. Usage in...

  • Page 12: Abbreviations

    CS 2890 Power Simulator / Calibrator Introduction measurement, control and laboratory use – Part 1: General requirements Safety requirements for electrical equipment for EN 61010-2-030: 2010 measurement, control and laboratory use – Part 2-030: Particular requirements for testing and measuring circuits...

  • Page 13: Description

    CS 2890 Power Simulator / Calibrator General description 2 Description 2.1 Front panel Figure 2: Front panel Front panel layout: 1. LCD Colour TFT display, 4.3 inch (10.9 cm), 480 x 272 pixels. 2. F1 – F4 Function keys. 3. ARROW keys Moves cursor and selects parameters.

  • Page 14: Connector Panel

    CS 2890 Power Simulator / Calibrator General description 2.2 Connector panel Warnings! Use safety test leads only! Max. short-term voltage of external power supply adapter is 14 V! Always turn off Power Simulator/Calibrator before plugging in or plugging out test leads.

  • Page 15: Bottom View

    CS 2890 Power Simulator / Calibrator General description 2.3 Bottom view Figure 5: Bottom view Bottom view layout: 1. Battery compartment cover. 2. Battery compartment screw (unscrew to replace the batteries). 3. Serial number label. 2.4 Accessories 2.4.1 Standard accessories...

  • Page 16: General Setup

    CS 2890 Power Simulator / Calibrator General setup 3 General Setup General setup menu can be accessed by using SETTINGS key from Main menu (Power Simulation mode). From the “GENERAL SETUP” menu, colour model for displaying phase measurements can be reviewed, configured and saved. It is also possible to view instrument information.

  • Page 17: Calibrator

    Returns to the General setup menu. ENTER 3.2 Calibrator Calibration function is used for calibrating and adjusting of Metrel Power Quality Analysers, like: MI 2883, MI 2885, MI 2892 and MI 2893. Calibrator assures stable voltage reference for periodic control of the instruments.

  • Page 18: Adjustment

    To enter into ADJUSTMENT menu, press F1 (ADJUST) button from the Calibration screen: Figure 9: Calibrator screen - “Default” and “Adjusted” CS 2890 voltage output Note: Default CS 2890 voltage output is note with sign “*” on the screen, Adjusted value without sign “*”. Table 6: Keys in Calibration menu Activates adjustment (ADJUST) and fine tuning of output voltages.
  • Page 19 Select frequency Table 9: Keys in General setup menu Select calibration point Scrolls cursor between options Enters submenu for entering value measured by reference voltmeter or getting it from the CS 2890 calibration certificate ENTER Returns to the Main menu.

  • Page 20: Adjustment Of Voltage Output

    Calibration certificate: Figure 11: CS 2890 Calibration certificate – voltage output Selection of 5V on the CS 2890 generates 5,00450V on the CS 2890 output (value from the calibration certificate), so it is necessary to adjust the voltage correction of 5,0045V.
  • Page 21 Connect substandard Volt-meter to CS 2890: Figure 13: Connection for the voltage adjustment procedure using substandard Volt- meter Connect L1 and L2 outputs from the CS 2890 to substandard volt-meter inputs. Press ADJUST (1.)  Press to Enter the Adjustment menu  Press Enter and...

  • Page 22: Adjustment Of Current Output

    (L1, L2, L3, N) at all calibration points should be adjusted. Figure 15: CS 2890 Calibration certificate – current output Selection of 50mV on the CS 2890 generates 50.019mV on the CS 2890 output (value from the calibration certificate), so it is necessary to adjust the current correction to 50,019mV (phase L1).
  • Page 23 Figure 16: Current adjustment procedure using values from the calibration certificate 2. Adjustment of CS 2890 current output by using substandard Volt-meter: Connect substandard Volt-meter to CS 2890 using special adapter A 1669. Current output should be burned with 110 kΩ (or parallel connected PQ Analyser).
  • Page 24 CS 2890 Power Simulator / Calibrator General setup Figure 18: Adjustment procedure using values from the substandard Volt-meter Important notes: - Adjust all calibration points (all phases and neutral for the current) - Adjusted values are valid till: o Manual Reset – by pressing RESET button under Adjustment menu...

  • Page 25: Instrument Info

    CS 2890 Power Simulator / Calibrator General setup Figure 21: Voltage, Current value IS Adjusted (without sign “*”) 3.3 Instrument info Basic information concerning the instrument (company, serial number, firmware and hardware version) can be viewed in this menu. Figure 22: Instrument info screen Table 10: Keys in Instrument info screen Returns to the General setup menu.

  • Page 26: Operating The Instrument - Power Simulator

    CS 2890 Power Simulator / Calibrator Operating the instrument 4 Operating the instrument – Power Simulator After powering ON, the CS 2890 works in Power Simulator mode - default instrument functionality. The instrument front panel consists of a colour LCD display and keypad. Generated waveforms and instrument status are shown on the display.

  • Page 27: Instrument Status Bar

    CS 2890 Power Simulator / Calibrator Operating the instrument Figure 24: Common display symbols and labels on SCOPE screen 4.1 Instrument status bar Instruments status bar is placed on the top of the screen. It indicates different instrument states. Icon descriptions are shown in table below.

  • Page 28: Instrument Keys

    CS 2890 Power Simulator / Calibrator Operating the instrument Instrument simulates inductive load network. Harmonics on current outputs are generated. Harmonics on voltage outputs are generated. Harmonics on both current and voltage outputs are generated. ≠ I ≠ I Unbalance is presented on current outputs (I ≠...

  • Page 29: Instrument Main Menu

    4.3.1 Power Simulator Menu After powering on the instrument, the “MAIN MENU” screen (Power Simulator function) is displayed. From this menu all instrument options are manipulated. The CS 2890 default menu screen is always “Simulator” screen. Figure 26: Main menu – Simulator window...

  • Page 30: Fundamental Voltage

    CS 2890 Power Simulator / Calibrator Operating the instrument Select between disabled, predefined low, high and manually adjusted Voltage unbalance unbalance on voltage. Selection between disabled, predefined low, high and manually Current unbalance adjusted unbalance on current. Frequency Selection between predefined system frequencies.

  • Page 31: Network Type

    CS 2890 Power Simulator / Calibrator Operating the instrument resolution within 0° to 180° range. These settings will affect phases L1, L2 and Figure 27: Current lags voltage by 25° angle  Capacitive network character – where current is leading in front voltage.

  • Page 32: Current Harmonics

    CS 2890 Power Simulator / Calibrator Operating the instrument  Manual – user defined harmonic set is generated on voltage output. See section 4.7 Harmonics for details how to define harmonic set. 4.3.7 Current harmonics By using left right cursor, user can switch between different current harmonic set options: ...

  • Page 33: Frequency

    CS 2890 Power Simulator / Calibrator Operating the instrument 4.3.11 Frequency By using left right cursor, user can switch between predefined system frequencies:  50 Hz  60 Hz System frequency may be manipulated more accurate by using Edit menu. See section 4.9 Edit menu for more detailed description.

  • Page 34: Factory Reset

    CS 2890 Power Simulator / Calibrator Operating the instrument  Voltage [1 2 3 N] – status of voltage channel mapping. Press ENTER to change  Current [1 2 3 N] – status of current channel mapping. Press ENTER to change it.

  • Page 35: Scope Screen

    CS 2890 Power Simulator / Calibrator Operating the instrument Long press (2 s) Enable single phase interrupt event. Short press Enable single phase swell event. Swell Long press (2 s) Enable single phase inrush event. Short press Generates harmonics on voltage.

  • Page 36: Phase Diagram

    CS 2890 Power Simulator / Calibrator Operating the instrument Figure 33: Voltage and current waveform mode - single mode and dual mode Table 16: Instrument screen symbols and abbreviations U1, U2, U3, Un True effective value of phase voltage: U...

  • Page 37: Phase Diagram

    CS 2890 Power Simulator / Calibrator Operating the instrument  Graphical presentation of voltage and current phase vectors of the simulated system,  Symmetrical components and unbalance of the simulated system. 4.6.1 Phase diagram By entering PHASE DIAGRAM option, key, from MAIN MENU, the following screen is shown (see figure below).

  • Page 38: Harmonics

    CS 2890 Power Simulator / Calibrator Operating the instrument key from Phase diagram / Unbalance diagram screens, or key from Main menu. Figure 35: Unbalance diagram screen Table 20: Instrument screen symbols and abbreviations Zero sequence voltage component U Zero sequence current component I...

  • Page 39: Harmonics Settings Screen

    CS 2890 Power Simulator / Calibrator Operating the instrument Figure 36: 230V fundamental voltage signal with added 5% of 3 and 7 harmonic 4.7.1 Harmonics settings screen By entering either Voltage or Current harmonics option from MAIN MENU, harmonics screen is shown (see figures below). In these screens, voltage or current harmonics are shown.

  • Page 40: Histogram (Bar)

    CS 2890 Power Simulator / Calibrator Operating the instrument confirmed as the window is closed (ENTER or ESC key) and enabled, when SET key is pressed. Figure 39: Set harmonic selection window Description of symbols and abbreviations used in METER screens are shown in table below.
  • Page 41 CS 2890 Power Simulator / Calibrator Operating the instrument Figure 40: Harmonics histogram screen Description of symbols and abbreviations used in BAR screens are shown in table below. Table 24: Instrument screen symbols and abbreviations Ux h01 … h50 Voltage harmonic component in V and in % of fundamental voltage;...

  • Page 42: Flickers

    CS 2890 Power Simulator / Calibrator Operating the instrument 4.8 Flickers Flicker is impression of unsteadiness of visual sensation induced by a light stimulus whose luminance spectral distribution fluctuates with time. Power Simulator/Calibrator use amplitude modulation according to the IEC 61000-4-15 standard, to provide flicker on voltage outputs.

  • Page 43: Edit Menu

    CS 2890 Power Simulator / Calibrator Operating the instrument 4.9 Edit menu The menu is accessed by pressing key from Main menu. Main feature of this menu is displaying and ability to modify settings for each phase and system frequency.
  • Page 44 CS 2890 Power Simulator / Calibrator Operating the instrument Figure 45: Set phase selection window System frequency can be set:  when chosen, user can set frequency in 1 Hz step by using left/right arrow keys,  when chosen, user can enter selection menu by pressing ENTER key, then set desired frequency in 0.01 Hz step within frequency range 45.00 Hz to 70.00 Hz...

  • Page 45: Events

    CS 2890 Power Simulator / Calibrator Operating the instrument 4.10 Events This section describes event generator functionality, their corresponding screens and manipulation. Six types of events can be generated: voltage dip, swell, interrupt, current inrush, signalling and transient. For each of them user can set various parameters.

  • Page 46: Swell

    CS 2890 Power Simulator / Calibrator Operating the instrument Refresh (activate) currently set dip. Scrolls cursor between options. Modifies parameter. Enters parameter value selection window. ENTER Returns to the Main menu. Exits from parameter value selection window. 4.10.2 Swell Swell is sudden voltage increase, followed by voltage recovery after a short time interval, from a few periods to a few seconds.

  • Page 47: Interrupt

    CS 2890 Power Simulator / Calibrator Operating the instrument Figure 50: Swell settings menu Table 31: Keys in swell settings submenu Refresh (activate) currently set swell. Scrolls cursor between options. Modifies parameter. Enters parameter value selection window. ENTER Returns to the Main menu.

  • Page 48: Inrush

    CS 2890 Power Simulator / Calibrator Operating the instrument  Level – using left and right cursor key, user can set interrupt level in range 0 % to 10 % of Unom.  Duration – using left and right cursor key, user can set interrupt duration in periods from 1 period to 100 periods.
  • Page 49 CS 2890 Power Simulator / Calibrator Operating the instrument 0.00 0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40 T [s] Figure 53: Inrush on voltage    to particular part of the voltage waveform, log( inrush 0.00 0.05 0.10 0.15...

  • Page 50: Signalling

    CS 2890 Power Simulator / Calibrator Operating the instrument Figure 55: Inrush settings submenu Table 33: Keys in inrush settings submenu Refresh (activate) currently set inrush. Modifies parameter. Returns to the Main menu. 4.10.5 Signalling Signalling voltage is voltage superimposed to the output voltage for the purpose of transmission of information in the public supply network and to network users' premises.

  • Page 51: Transient

    CS 2890 Power Simulator / Calibrator Operating the instrument  Phase type – using left and right cursor key, user can switch between Single(L1) and Poly-phase event type.  Frequency – using left and right cursor key, user can set signalling frequency in 0.1 Hz increments in range from 50.0 Hz to 3000.0 Hz.
  • Page 52 CS 2890 Power Simulator / Calibrator Operating the instrument Figure 58: Generated transient sample, captured by MI 2892 Power Master Transient event is periodically repeated, according to EVENT OCCURRANCE setting in MAIN MENU. By entering the submenu, next options are available: ...

  • Page 53: Swap Connection Terminals

    CS 2890 Power Simulator / Calibrator Operating the instrument 4.11 Swap connection terminals In order to represent problems with wrongly connected instrument, and to see how difficult is to spot such problem, Power Simulator has additional functionality for swapping voltage or current channels. Both voltage and current channels can be swapped.

  • Page 54: Save/Recall Signal Parameters

    CS 2890 Power Simulator / Calibrator Operating the instrument microSD Card Figure 61: Inserting microSD card 3. Open instrument cover 4. Insert microSD card into a slot on the instrument (card should be putted upside down, as shown on figure) 5.
  • Page 55 CS 2890 Power Simulator / Calibrator Operating the instrument Figure 62: RECALL function key Signal setup could be saved into the SD card by pressing the RECALL function key. Figure 63: SAVE/RECALL window Table 37: SAVE/RECALL screen Save actual parameters setup under predefined name into SD card YES –...
  • Page 56 CS 2890 Power Simulator / Calibrator Operating the instrument Recall selected parameters setup from the SD card Recall selected parameters setup from the SD card  TEST0001 setup RECALL Delete selected parameters setup from the SD card YES – Delete selected parameters...

  • Page 57: Instrument Usage - Power Simulator

    – Power Simulator mode. L1 voltage output from Power Simulator should be connected to L1 input of PQA, L2 output to L2 input and similar inputs L3, N and GND. Note: Since the MI 2883 PQA does not have GND input, GND output on the CS 2890 should remain unconnected.

  • Page 58: Simulation Campaign

    Figure 62: Recommended simulation practice 5.2.1 Step 1: Connection setup Preparation of Power Simulator/Calibrator CS 2890 and Power Master MI 2892 includes the following steps:  Visually check both instruments and accessories.  Make sure, that Power Simulator/Calibrator CS 2890 is turned off.

  • Page 59: Step 2: Power Simulator Setup

    CS 2890 Power Simulator / Calibrator Operating the instrument  Connect test leads as described in section 5.1. Always plug in leads on the PQA first and after that to Power Simulator/Calibrator. Warnings!  Don’t use visually damaged equipment!  Always use batteries that are in good condition and fully charged.

  • Page 60: Instrument Usage - Power Calibrator

    CS 2890 Power Calibrator has stable and precise voltage output, which can be used for periodic calibration and adjustment of Metrel Power Quality Analysers. CS 2890 is intended for calibrate Class A (MI 2892/MI 2893) as well as Class S (MI 2885/MI 2883) power quality analysers.

  • Page 61: Calibration Of Pq Instruments

    Operating the instrument 6.1 Calibration of PQ instruments Calibration voltage output is present on the CS 2890 terminals L1 – L2 as it is shown on Figure 63: Calibrator output terminals below. Selected Fundamental current is present on all four outputs simultaneously.
  • Page 62 CS 2890 Power Simulator / Calibrator Operating the instrument Figure 64: Connection for calibration voltage input L1 on MI 2893/MI 2892/MI 2885/MI 2883 Calibration voltage test points for PQ Analysers: Nominal voltage range: 50 V Calibrated voltages: 5V - 50V - 75V...

  • Page 63: Calibration Of Voltage Input For Class S Pqa (Mi 2883 Example)

    UUC set-up: Voltage ratio 1:1, Connection: 4W, Synchronisation: U1, System frequency: 50 Hz In this case, the output of the CS 2890 is Adjusted with the reference value taken from the CS 2890 calibration certificate. Perform Adjustment procedure for all voltage calibration points before starting calibration procedure (check section 3.2.2 Adjustment...

  • Page 64: Calibration Of Voltage Input For Class A Pqa (Mi 2892 Example)

    Operating the instrument 6.1.3 Calibration of voltage input for Class A PQA (MI 2892 example) In this case, Adjustment of the CS 2890 calibration voltage is done with the substandard Volt-meter. Adjust all voltage calibration points before starting calibration procedure. As reference Volt-meter, Keysight 34461 were used.

  • Page 65: Calibration Of Pq Analyser Current Inputs - Mi 2893/Mi 2892/Mi 2885/Mi 2883

    Class S) or by using substandard volt-meter (valid for Class A). Connect output I1 from CS 2890 to input I1 on the unit under test (MI 2885); output I2 to input I2 and similar for other inputs/outputs according the figure bellow:...

  • Page 66: Calibration Of Current Inputs For Class S Pqa (Mi 2883 Example)

    1000 999.9  1000 1000.0  1000 1001.0   2000 2001 1.40  2000 2000 1.40  2000 2000 1.40  2000 2001 1.40 Table 40: MI 2883 current calibration performed with CS 2890 (Uncertainty based on Calibration certificate)

  • Page 67: Calibration Of Current Inputs For Class A Pqa (Mi 2892 Example)

    999.9 0.14  1000 1000.0 0.14  1000 1001.0 0.14   2000 2001  2000 2000  2000 2000  2000 2001 Table 41: MI 2892 current calibration performed with CS 2890 (Uncertainty based on substandard Volt-meter Keysight 34461)

  • Page 68: Calibration Procedure

    CS 2890 Power Simulator / Calibrator Operating the instrument 6.2 Calibration procedure 6.2.1 Voltage Short overview of necessary performed steps for voltage calibration (test sample MI 2892). Please check the connection instructions under item 6.1.1. Power Master – MI 2892...
  • Page 69 CS 2890 Power Simulator / Calibrator Operating the instrument Read voltage values for L1, L2, L3, GND ÷ N In CALIBRATOR Menu set: and compare them with Certificate report Fundamental voltage: 50 V values Read voltage values for L1, L2, L3, GND ÷ N...
  • Page 70 CS 2890 Power Simulator / Calibrator Operating the instrument Read voltage values for L1, L2, L3, GND ÷ N In CALIBRATOR Menu set: and compare them with Certificate report Fundamental voltage: 110 V values Read voltage values for L1, L2, L3, GND ÷ N...

  • Page 71: Current

    CS 2890 Power Simulator / Calibrator Operating the instrument 6.2.2 Current Short overview of necessary performed steps for current calibration (test sample MI 2892). Please check the connection instructions under item 6.1.2. Power Calibrator – CS 2890 Power Master In ADJUSTMENT Menu: Perform Adjustment for all calibration points (all phase and neutral currents) ...
  • Page 72 CS 2890 Power Simulator / Calibrator Operating the instrument In CALIBRATOR Menu set: Read current values for L1, L2, L3, N and compare them with Certificate report values Fundamental current: 0.100 V In CALIBRATOR Menu set: Read current values for L1, L2, L3, N and compare them with Certificate report values Fundamental current: 0.200 V...

  • Page 73: Frequency

    CS 2890 Power Simulator / Calibrator Operating the instrument In CALIBRATOR Menu set: Read current values for L1, L2, L3, N and compare them with Certificate report values Fundamental current: 1.000 V In CALIBRATOR Menu set: Read current values for L1, L2, L3, N and compare them with Certificate report values Fundamental current: 2.000 V...
  • Page 74 CS 2890 Power Simulator / Calibrator Operating the instrument Press shortcut read frequency value. Compare it with value from the MI 2892 Certificate report. Press shortcut key and set:  Current clamp range: 1000A  Connection: 4W  Synchronization: I1 ...

  • Page 75: Power Quality Analyser Adjustment Procedure

    CS 2890 Power Simulator / Calibrator Operating the instrument In MAIN MENU set: Press shortcut key and set:  Current clamp range: 1000A  Connection: 3W  Synchronization: U12  System frequency: 50 Hz (or 60 Return to MAIN MENU...

  • Page 76: Technical Specifications

    CS 2890 Power Simulator / Calibrator Technical specification 7 Technical specifications 7.1 General specifications 0 C … 40 C Working temperature range (Power Simulator): -40 C … 70 C Storage temperature range: 95 % RH (0 C … 40 C), non-condensing Max.

  • Page 77: Current

    CS 2890 Power Simulator / Calibrator Technical specification Event RMS voltage output: U , AC+DC 1Rms 2Rms 3Rms NRms Event voltage Resolution Accuracy 0 … 350 V ± 2 % 1 % of fundamental output voltage 7.2.3 Current Fundamental RMS current I1Rms, I2Rms, I3Rms, INRms, AC+DC.

  • Page 78: Calibrator/Adjustment

    - 500 V Measuring uncertainty at the Metrel PQA calibration should be calculated from uncertainty of correction that is derived from calibration of the CS 2890 or from substandard V-meter and other contributions of the measuring uncertainty budget like stability, resolution, and influence quantities. It is recommended that for measuring uncertainty calculation user follow the guidelines from EA 4/02 document - Expression of the Uncertainty of Measurement in Calibration.

  • Page 79: Maintenance

    CS 2890 Power Simulator / Calibrator Maintenance 8 Maintenance 8.1 Inserting batteries into the instrument Make sure that the power supply adapter/charger and measurement leads are disconnected and the instrument is switched off before opening battery compartment cover. Insert batteries as shown in figure below (insert batteries correctly, otherwise the instrument will not operate and the batteries could be discharged or damaged).

  • Page 80: Batteries

    CS 2890 Power Simulator / Calibrator Maintenance Figure 67: Closing the battery compartment cover Screw the cover on the instrument. Warnings!  Hazardous voltages exist inside the instrument. Disconnect all test leads, remove the power supply cable and turn off the instrument before removing battery compartment cover.
  • Page 81 9 Firmware upgrade Metrel as manufacturer is constantly adding new features and enhance existing. In order to get most of your instrument, we recommend periodic check for software and firmware updates. In this section firmware upgrade process is described.
  • Page 82 CS 2890 Power Simulator / Calibrator Maintenance PC computer with installed latest version of PowerView software. If your PowerView is out of date, please update it, by clicking on “Check for PowerView updates” in Help menu, and follow the instructions.
  • Page 83 CS 2890 Power Simulator / Calibrator Maintenance Figure 71: Version checker window 5. If your instrument has older FW, PowerView will notify you that new version of FW is available. Click on Yes to proceed. Figure 72: New firmware is available for download 6.
  • Page 84 8. Instrument upgrade process should begin. Please wait until all steps are finished. Note that this step should not be interrupted; as instrument will not work properly. If upgrade process goes wrong, please contact your distributor or Metrel directly. We will help you to resolve issue and recover instrument.
  • Page 85 CS 2890 Power Simulator / Calibrator Maintenance Figure 75: FlashMe programming screen 10 Power supply considerations When using the original power supply adapter/charger the instrument is fully operational immediately after switching it on. The batteries are charged at the same time, nominal charging time is 3.5 hours.
  • Page 86 CS 2890 Power Simulator / Calibrator Maintenance Warnings!  Do not use liquids based on petrol or hydrocarbons!  Do not spill cleaning liquid over the instrument! 11.1 Periodic calibration To ensure correct measurement, it is essential that the instrument is regularly calibrated.
  • Page 87 CS 2890 Power Simulator / Calibrator Annex 12 Annex I – MI 2892 Calibration Certificate Example of Calibration certificate for MI 2892, from which you can get: List of calibration test points Reference value for the tested UUC...
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  • Page 93 CS 2890 Power Simulator / Calibrator Annex Annex II – CS 2890 Calibration Certificate Example of Calibration certificate for CS 2890, from which you can get:  Exact Reference value for the specific measurement test point...
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