Operating Instructions METRAHITEXTRAETECHESPECIALEBASE High Resolution TRMS Digital Multimeter 3-349-456-03 10/5.
Standard Equipment Standard Equipment 1 Multimeter in HC20 hard case 1 KS17-S measurement cable set 2 Batteries 1 DAkkS calibration certificate 1 Protective rubber cover 1 Condensed operating instructions * * Detailed operating instructions are available for download on the Internet at www.gossenmetrawatt.
Contact Persons Accessories (sensors, plug inserts, adapters, consumable materials) The accessories available for your instrument are checked for compliance with currently valid safety regulations at regular intervals, and are expanded as required for new applications.
Standard Equipment Recalibration Service GMC-I Service GmbH will calibrate or recalibrate all instruments supplied by us or made by any other manufacturer. Our calibration facility is licensed by the German DAkkS organization that is recognized throughout the world. Our products can also be recalibrated by any other calibration laboratory based on the technical specifications published in the operations manual.
Contact Persons Competent Partner GMC-I Messtechnik GmbH is certified in accordance with DIN EN ISO 9001:2008. Our DAkkS calibration laboratory is accredited by the Deutsche Akkreditierungsstelle GmbH (National accreditation body for the Republic of Germany) in accordance with DIN EN ISO/ IEC 17025:2005 under registration number D-K-15080-01-01.
Table of Contents Contents Page Contents Page 1 Safety Features and Precautions ....................................... 8 5 1.1 1.2 1.3 Use for Intended Purpose ................................................................10 Meanings of Danger Symbols ..........................................................11 Meanings of Acoustic Warning Signals ............................................11 2 Operating Overview – Connections, Keys, Rotary Switch, Symbols .....................................
Table of Contents Contents Page 5.7.2 Alternating Current and Frequency Measurement, Direct Connection, A AC and Hz (METRAHIT EXTRA, METRAHIT ETECH and METRAHIT ESPECIAL only) ............................................................... 42 5.7.3 Direct and Pulsating Current Measurement with Current Clamp Sensors, A DC and A (DC+AC) ................................43 5.7.4 Alternating Current Measurement with Current Clamp Sensors, A AC and Hz ............................................................
Safety Precautions 1 Safety Features and Precautions You have selected an instrument which provides you with a high level of safety. This instrument fulfills the requirements of the applicable EU guidelines and national regulations. This is confirmed by means of the CE mark. A corresponding declaration of conformity can be requested from GMC-I Messtechnik GmbH.
Safety Precautions • Maximum allowable voltage between the voltage measuring terminals, and between all connections and earth is 1000 V for measuring category III, or 600 V for measuring category IV. The METRAHIT ESPECIAL variant is an exception. • Be prepared for the occurrence of unexpected voltages at devices under test (e.g. defective devices). For example, capacitors may be dangerously charged. • Make certain that the measurement cables are in flawless condition, e.g.
Safety Precautions Repair and Parts Replacement When the instrument is opened, voltage conducting parts may be exposed. The instrument must be disconnected from the measuring circuit before the performance of repairs or the replacement of parts. If repair of a live open instrument is required, it may only be carried out by trained personnel who are familiar with the dangers involved.
Safety Precautions 1.2 ! Meanings of Danger Symbols Warning concerning a point of danger (attention: observe documentation!) Warning concerning dangerous voltage at the measurement input: U > 55 V AC or U > 70 V DC 1.
Operating Overview – Connections, Keys, Rotary Switch, Symbols 2 Operating Overview – Connections, Keys, Rotary Switch, Symbols 16 chapter 7 15 chapter 3.1 * 1 chapter 4.3 chapter 6 2 chapter 4.1.2 14 chapter 3 13 3 chapter 3 12 4 chapter 5 chapter 6 5 chapter 6 11 chapter 4.4 6 chapter 3 ff. 7 chapter 1.2 8 chapter 3 9* chapter 4.1 10 chapter 4.1 Max.
Operating Overview – Connections, Keys, Rotary Switch, Symbols Symbols Used in the Digital Display 1 2 3 4 5 25 6 7 8 9 10 11 26 12 13 24 14 23 15 16 17 18 21 Battery level indicator 22 1 2 3 4 5 6 7 8 9 10 11 12 13 20 19 Battery full Battery OK 14 15 16 17 Battery weak Battery (almost) dead, U < 1.
Operating Overview – Connections, Keys, Rotary Switch, Symbols Symbols of Rotary Switch Positions Switch FUNC Display Measuring Function V~ Hz (V) V~ 1kHz dB V~ 1 M V~ 1kHz Hz (V) 1 M V V MHz % 0/4 1 2 3 0/3 1 2 0/2 1 0/2 1 — Alternating voltage, TRMS AC, full bandwidth Voltage frequency, up to 300 kHz Alternating voltage, TRMS AC, with low-pass (1 kHz) Alternating voltage level measurement Alternating voltage, TRMS AC, full bandwidth, input 1 M Alternating voltage, TRMS AC, up to 1 kHz, input 1 M
Operating Overview – Connections, Keys, Rotary Switch, Symbols User Interface Symbols in the Following Chapters ... Scroll through main menu ... Scroll through sub-menu Select decimal point Increase/decrease value time Sub-menu/parameter (7-segment font) 1nFo Main menu (7-segment font, boldface) ▲ IR ▼ Position of the infrared interface, window on the top of the instrument Position of the power pack connector socket, see also chapter 3.
Initial Start-Up – Setup 3 Initial Start-Up 3.1 Inserting Batteries or Rechargeable Batteries Be certain to refer to chapter 9.2 regarding correct battery installation. Momentary battery voltage can be queried in the Info menu (see chapter 6.3). ! Attention! Disconnect the instrument from the measuring circuit before opening the battery compartment lid in order to replace the batteries. Operation with the Power Pack (accessory for METRAHIT EXTRA, not included, see chapter 10.
Initial Start-Up – Setup 3.4 ➭ Switching the Instrument Off Switching the Instrument Off Manually ➭ Press the ON / OFF | LIGHT key until 0FF appears at the display. ON / OFF LIGHT Shutdown is acknowledged with a brief acoustic signal. Automatic Shutdown The instrument is switched off automatically if the measured value remains unchanged for a long period of time (maximum measured value fluctuation of approx. 0.
Control Functions 4 Control Functions 4.1 Selecting Measuring Functions and Measuring Ranges The rotary switch is linked to the automatic socket blocking mechanism, which only allows access to two connector jacks for each function. Be certain to remove the appropriate plug from its respective jack before switching to and from the “A” functions.
Control Functions 4.1.3 Quick Measurements Measurements performed using a suitable fixed measuring range are executed more quickly than those which utilize automatic range selection. Quick measurement is made possible with the following two functions: • Manual measuring range selection, i.e. selection of the measuring range with the best resolution (see chapter 4.1.2). or • With the DATA function (see chapter 4.4).
Control Functions ➭ Briefly press the ZERO | ESC key. The instrument acknowledges storage of the reference value with an acoustic signal, and the “ZERO REL” or the “REL” symbol appears at the LCD. The value measured at the moment the key is pressed serves as a reference value. ➭ The reference value can be cleared by once again pressing the ZERO | ESC key. Notes Regarding Relative Measurement • Relative measurement effects the digital display only.
Control Functions 4.4 Measured Value Storage: DATA (auto-hold / compare) An individual measured value can be automatically “frozen” with the DATA function (auto-hold). This is useful, for example, when contacting the measuring points with the test probes requires your full attention.
Control Functions Example The voltage measuring range is set manually to 6 V. The first measured value is 3 V, which is stored to memory because it is greater than 5,000 digits of the measuring range (= 0.5 V), and is thus reliably above the background noise level. As soon as the measured values drops to less than 5,000 digits of the measuring range, i.e. amounts to less than 0.5 V which corresponds to removal of the test probes from the measuring point, the instrument is ready to store a new value. 4.4.
Control Functions 4.5 Measurement Data Recording (METRAHIT EXTRA only) The METRAHIT EXTRA is capable of recording measurement data using an adjustable sampling rate for long periods of time in the form of measurement series. Data are stored to a battery backed memory module, and are retained even after the multimeter is switched off. The system acquires measured values relative to real-time. Stored measured values can subsequently be read out with the help of METRAwin 10 software.
Control Functions During Recording STORE is displayed underneath the analog display during memory mode operation, and memory occupancy can be controlled: Querying Memory Occupancy Memory occupancy can be queried during recording with the help of the “1nFo ” menu (see also chapter 6.3). Memory occupancy range: 000.1% to 099.9%. StoP 000.3% MEASURE SETUP The following message appears as soon as memory is full: “100.0%”.
Control Functions GMC-I Messtechnik GmbH 25
V/Hz, , Temperature, 5 Measurements 5.1 Voltage Measurement and A/Hz Measurements Notes Regarding Voltage Measurement • The multimeter may only be operated with installed batteries or rechargeable batteries. Dangerous voltages are otherwise not indicated, and the instrument may be damaged. • The multimeter may only be operated by persons who are capable of recognizing contact hazards and taking the appropriate safety precautions.
V/Hz, , Temperature, and A/Hz Measurements 5.1.1 Direct and Pulsating Voltage Measurement, V DC and V (DC+AC) Note The following must be observed for all multimeters except for the METRAHIT EBASE: Set the CL iP parameter to 0FF in the current clamp setup menu. Otherwise all measured values are displayed in amperes, and are corrected by the amount resulting from the selected transformation ratio for an interconnected current clamp sensor. MEASURE SETUP FUNC ENTER 1nFo ...
V/Hz, , Temperature, and A/Hz Measurements 5.1.2 Alternating Voltage Measurement with 1 M Load Resistance and Frequency Measurement with Selectable Low-Pass Filter (METRAHIT EXTRA, METRAHIT ETECH and METRAHIT ESPECIAL only) The measuring instrument includes a V1M switch position for electricians with an input resistance of approximately 1 M. Erroneous displays resulting from capacitive coupling during voltage measurement in power supply systems are reduced to a minimum in this way.
V/Hz, , Temperature, V Temp Measuring Ranges: V~: 600 mV1000 V Max. 1000 V (< 10 kHz) Max. 100 V (> 10 kHz) Hz: 1 Hz 300 kHz Pmax = 6 x 106 V x Hz for U > 100 V COM ~ Warnings regarding dangerous voltage: > 55 V AC or > 70 V DC: 230.0 > 1000 V: Voltage Comparator for Displaying Dangerous Voltage The input signal or measuring signal is checked by a voltage comparator for dangerous spikes, because these do not appear at the display when the low-pass filter is used.
V/Hz, , Temperature, and A/Hz Measurements 5.1.3 Alternating Voltage and Frequency Measurement V AC and Hz with Selectable Low-Pass Filter (METRAHIT EXTRA, METRAHIT ETECH and METRAHIT ESPECIAL only) Note For all multimeters except the METRAHIT EBASE: see note in chapter 5.1.1. ➭ In accordance with the voltage or frequency to be measured, turn the rotary switch to V~ or Hz. ➭ Connect the measurement cables as shown. The “” connector jack should be grounded.
V/Hz, , Temperature, V Temp Measuring Ranges: V~: 600 mV1000 V Max. 1000 V (< 10 kHz) Max. 100 V (> 10 kHz) Hz: 1 Hz 300 kHz Pmax = 6 x 106 V x Hz for U > 100 V COM ~ V~ Hz V~ AC TRMS FUNC ENTER 050.03 AC Hz Hz 230.0 > 1000 V: Voltage Comparator for Displaying Dangerous Voltage The input signal or measuring signal is checked by a voltage comparator for dangerous spikes, because these do not appear at the display when the low-pass filter is used.
V/Hz, , Temperature, and A/Hz Measurements Alternating Voltage Level Measurement (dB) Voltage level measurement is used in order to ascertain overall attenuation or boosting of a transmission system (shown here as a 4-pole setup). U1 U2 U Voltage level [dB] = 20 log -----2U1 where U1 = UREF (reference level) Result > 1: boosting Result < 1: attenuation Note No terminal resistors have been integrated into the device. It performs measurement with a high input impedance of 9 M.
V/Hz, , Temperature, 5.1.4 Frequency and Duty Cycle Measurements (METRAHIT EXTRA only) ➭ Set the rotary switch to MHz or %. ➭ Connect the measurement cables as shown. Make sure that a current measuring range (“A”) has not been activated when the multimeter is connected for frequency or duty cycle measurement! and A/Hz Measurements MHz MHz 1.0323 fP MHz % FUNC ENTER U ! Attention! The applied signal voltage may not exceed 5 V.
V/Hz, , Temperature, and A/Hz Measurements 5.2 Resistance Measurement, ➭ Disconnect supply power from the electrical circuit of the device to be measured, and discharge all high-voltage capacitors. ➭ Make sure that the device under test is voltage-free. Interference voltages distort measurement results! Refer to chapter 5.1.1 regarding testing for the absence of voltage with the help of the direct voltage measurement. ➭ Set the rotary switch to “”. ➭ Connect the device under test as shown. 000.
V/Hz, , Temperature, 5.3 Continuity Test ➭ Disconnect supply power from the electrical circuit of the device to be measured, and discharge all high-voltage capacitors. ➭ Make sure that the device under test is voltage-free. Interference voltages distort measurement results! ➭ Set the rotary switch to . ➭ Connect the conductor path under test as shown. 000.
V/Hz, , Temperature, and A/Hz Measurements 5.4 Diode Testing with a Constant Current of 1 mA ➭ Disconnect supply power from the electrical circuit of the device to be measured, and discharge all high-voltage capacitors. ➭ Make sure that the device under test is voltage-free. Interference voltages distort measurement results! Refer to chapter 5.1.1 regarding testing for the absence of voltage with the help of the direct voltage measurement. ➭ Set the rotary switch to . ➭ Press the FUNC | ENTER key.
V/Hz, , Temperature, 5.5 Temperature Measurement Temperature measurement is performed with a type K thermocouple (accessory), which is connected to the voltage input. Alternatively, a Pt100 or Pt1000 resistance sensor can be used with the METRAHIT EXTRA and METRAHIT ETECH. Selecting the Unit of Measure for Temperature MEASURE SETUP 1nFo ...
V/Hz, , Temperature, and A/Hz Measurements 5.5.2 Measurement with Resistance Sensors (METRAHIT EXTRA and METRAHIT ETECH only) ➭ Set the rotary switch to “TempTC” or “TempRTD”. The last selected temperature measurement or sensor, i.e. type K or Pt100/Pt1000, remains in memory and is accordingly displayed. Press the FUNC | ENTER key in order to change to the other measuring function if required. The sensor type, i.e. Pt100 or Pt1000, is detected automatically and displayed.
V/Hz, , Temperature, F ! 0V! V Temp COM + ➭ ➭ 10.38 + ➭ Note The “–” pole of polarized capacitors must be connected to the “” jack. Resistors and semiconductor paths connected in parallel to the capacitor distort measurement results! GMC-I Messtechnik GmbH – ➭ Capacitance Measurement (METRAHIT EXTRA and METRAHIT ETECH only) Disconnect supply power from the electrical circuit of the device to be measured, and discharge all high-voltage capacitors.
V/Hz, , Temperature, 5.7 and A/Hz Measurements Current Measurement Notes Regarding Current Measurement • The multimeter may only be operated with installed batteries or rechargeable batteries. Dangerous currents are otherwise not indicated, and the instrument may be damaged. • The METRAHIT ESPECIAL multimeter does not have a fuse for the current measuring range. It’s designed for measurements in current transformer circuits and is approved for measuring category 600 V CAT II.
V/Hz, , Temperature, 5.7.1 Direct and Pulsating Current Measurement, Direct Connection, A DC and A (DC+AC) (METRAHIT EXTRA, METRAHIT ETECH and METRAHIT ESPECIAL only) ➭ First disconnect supply power from the measuring circuit or the power consumer (1), and discharge any capacitors. ➭ In accordance with the current to be measured, turn the rotary switch to A or A . ➭ Select the current type appropriate for the measured quantity by briefly pressing the FUNC | ENTER multifunction key.
V/Hz, , Temperature, and A/Hz Measurements 5.7.2 Alternating Current and Frequency Measurement, Direct Connection, A AC and Hz (METRAHIT EXTRA, METRAHIT ETECH and METRAHIT ESPECIAL only) ➭ First disconnect supply power from the measuring circuit or the power consumer (1), and discharge any capacitors. ➭ In accordance with the current or frequency to be measured, turn the rotary switch to A~ or Hz. ➭ Select the desired measured quantity by briefly pressing the FUNC | ENTER multifunction key.
V/Hz, , Temperature, 5.7.3 Direct and Pulsating Current Measurement with Current Clamp Sensors, A DC and A (DC+AC) Transformer Output, Voltage/Current When a current clamp sensor is connected to the multimeter (V input (METRAHIT EBASE: V input)), all current displays appear with the correct value in accordance with the selected transformation factor.
V/Hz, , Temperature, and A/Hz Measurements 5.7.4 Alternating Current Measurement with Current Clamp Sensors, A AC and Hz METRAHIT EBASE Transformer Output, Voltage/Current When a current clamp sensor is connected to the multimeter (V input (METRAHIT EBASE: V input)), all current displays appear with the correct value in accordance with the selected transformation factor.
V/Hz, , Temperature, 5.7.5 Direct, Pulsating and Current Measurement with Current Clamps Transformer A DC, A (DC+AC), A AC and Hz (METRAHIT EXTRA, METRAHIT ETECH and METRAHIT ESPECIAL only) Transformer Output, Current/Current When a current clamps transformer is connected to the multimeter ( mA/A input), all current displays appear with the correct value in accordance with the selected transformation factor.
Device and Measuring Parameters 6 Device and Measuring Parameters The instrument’s “SET ” mode (menu mode) makes it possible to set operating and measuring parameters, query information and activate the interface. ➭ The menu mode is accessed by pressing the MEASURE | SETUP key, assuming that the instrument is switched on and set to “Measure” (measuring mode operation). “1nFo ” appears at the display. ➭ The main menus, i.e.
Device and Measuring Parameters 6.1 Paths to the Various Parameters 6.2 List of All Parameters Parameter EXTRA ETECH ESPE- EBASE Page: Header CIAL 020.00 V DC AC TRMS MEASURE SETUP 1nfo Main Menus 1nFo FUNC ENTER StorE * FUNC ENTER Sub-Menus/Parameters Query Set bAtt: 000.0 uerSion: 1tEMP: dAtE: t iME: 0CCvP: * SEnd FUNC ENTER SET FUNC ENTER tEMP FUNC ENTER Set Set rAtE StArt nofil CLEAr StArt/ StoP StoP Selection Selection FUNC ENTER rESoL 0.diSP A.
Device and Measuring Parameters 6.3 Querying Parameters – InFo Menu (as moving letters) bAtt – query battery voltage FUNC MEASURE 1nFo ENTER bAtt: 2.75 V. SETUP vErSion – query firmware version FUNC MEASURE 1nFo ENTER bAtt: vErSion: 2.09 SETUP ItEMP – query reference temperature The temperature of the internal reference junction is measured with a temperature sensor in close proximity to the input sockets. FUNC MEASURE 1nFo ENTER bAtt: ...
Device and Measuring Parameters rESoL – switching resolution All main measuring functions can be switched back and forth between 6000 and 60,000 digits. MEASURE SETUP FUNC ENTER FUNC ENTER 1nFo ... SET 6000/ / 60000 FUNC ENTER FUNC ENTER rAtE ... 0.diSP FUNC ENTER 0000.0 : with leading zeros (default setting) 0.0 : leading zeros suppressed FUNC ENTER bArG / Point FUNC ENTER rAtE ... A.diSP FUNC ENTER (bArG = default value) 0.
Device and Measuring Parameters bEEP – set the limit value for continuity testing MEASURE SETUP FUNC ENTER 1nFo ... SET FUNC ENTER 1, 10, 20 ... 500 rAtE ... bEEP FUNC ENTER (10 = default setting) dAtE – enter date Entering the current date makes it possible to acquire measured values in real-time. MEASURE SETUP FUNC ENTER 1nFo ... SET FUNC ENTER rAtE ... dAtE 31.12 (DD: day .
Device and Measuring Parameters 6.5 Default Settings Previously entered changes can be undone, and the default settings can be reactivated. This may be advisable under the following circumstances: • After the occurrence of software or hardware errors • If you are under the impression that the multimeter does not work correctly ➭ Disconnect the device from the measuring circuit. ➭ Remove the batteries temporarily (see also chapter 9.2).
Interface Operation 7 Interface Operation The multimeters are equipped with an infrared interface for the transmission of measurement data to a PC. Measured data are optically transferred through the instrument housing by means of infrared light to an interface adapter (accessory), which is attached to the multimeter. The adapter’s USB interface allows for the establishment of a connection to the PC via an interface cable.
Interface Operation 7.2 Configuring Interface Parameters irStb – status of the infrared receiver in the stand-by mode There are two possible switching statuses for the infrared interface when the multimeter is switched off: iron: IR appears at the display and the infrared interface is active, i.e. signals such as making commands can be received, and power is consumed even though the multimeter is switched off.
Technical Data 8 Technical Data Meas. Function Measuring Range V 600 mV 6 V 60 V 600 V 1000 V A A 54 ~ ~ ~ ~ ~ 0.01 dB 0.6/6/60/600 A 6/60/600/6000 A Input Impedance ~ Intrinsic Error under Reference Conditions for High Resol 59999 digits Overload Capacity 2) (... % rdg. + ... d) (... % rdg. + ... d) (... % rdg. + ... d) 1) 1) Value Time 0.09 + 5 mit ZERO *) 0.5 + 30 1 + 30 1000 V 0.05 + 5 0.5 + 9 1 + 30 DC 0.05 + 5 0.5 + 9 1 + 30 AC continous RMS 0.05 + 5 0.5 + 9 1 + 30 Sine 0.09 + 5 0.
Technical Data Meas. Function 1) 2) 3) 4) *) Measuring Range 600 6 60 600 6 60 600 6.0 k k k M M V 3) Resolution at Upper Range Limit 59 999 5999 10 m 100 m 100 m 1 1 10 10 100 100 1 k 1 k 10 k — 0.1 — 1 mV Input Impedance ~ Open-circuit voltage < 1.4 V < 1.4 V < 1.4 V < 1.4 V < 1.4 V < 1.4 V approx. 9 V approx. 9 V / Meas. curr. @ range limit approx. 250 A approx. 65 A approx. 7.5 A approx. 0.75 A approx. 0.1 A approx. 30 nA approx. 1 mA const. approx.
Technical Data Meas. Function F EXTRA ETECH Hz (V) Hz (A) Hz (A ) Hz (V) MHz EXTRA % Measuring Range Resolution at Upper Range Limit 59999 60 600 6 60 600 nF nF F F F — — — — — 10 100 1 10 100 pF pF nF nF nF 0.01 Hz 0.1 Hz 0.1 Hz 1 Hz 60.000 kHz 1 Hz 10 Hz 600 Hz ... 1 MHz Intrinsic Error under Reference Conditions for High Resol 59999 digits ~/ 5999 600.00 Hz 6.0000 kHz 300.00 kHz Input Impedance Discharge resist. 10 M 1 M 100 k 12 k 3 k 10 Hz 100 Hz 0.01 ... 0.1 ...
Technical Data Influencing Quantities and Influence Error Influencing Quantity Sphere of Influence Measured Quantity / Measuring Range 1) V 0.2 + 10 V 0.4 + 10 600 ... 6 M > 6 M Temperature 0 C ... +21C and +25C... +40C Influencing Meas. Quantity/ Quantity Meauring Range 1 + 10 0.5 + 10 mA/A 0.8 + 10 60 nF ... 600 F 1+5 Hz, dB 0.2 + 10 C/F (Pt100/Pt1000) 0.5 + 10 0.
Technical Data Influencing Quantity Crest factor CF 5) Sphere of Influence Measured Quantity / Measuring Range 1 ... 3 V > 3 ... 5 Influence Error 5) 1 % rdg. ,A 3 % rdg. Except for sinusoidal waveshape Influencing Qty. Sphere of Infl. Measured Quantity Influence Error V A, , Hz, dB, C 1 x intrinsic error Reference Conditions +23C 2 K 40 ... 75% 45 ... 65 Hz sine 3 V 0.1 V Ambient temperature Relative humidity Measured qty. frequency Measured qty.
Technical Data Data Interface Type Power Supply Optical via infrared light through the housing Data transmission (data transfer) Protocol Baud Rate Functions Serial, bidirectional (not IrDa compatible) Device specific 38,400 baud – Select/query measuring functions and parameters – Query/transmit momentary measurement data – Read out stored measurement data The USB X-TRA plug-in interface adapter (see accessories) is used for adaptation to the PC’s USB port.
Technical Data Refresh Rate Display LCD panel (65 mm x 36 mm) with analog and digital display including unit of measure, type of current and various special functions Background illumination Background illumination is switched off approximately 1 minute after it has been activated. Analog Display Scaling Polarity display Overflow display Measuring rate Digital Display / Char.
Technical Data Electrical Safety Ambient Conditions per IEC 61010-1:2010/VDE 0411-1:2011 II Safety class Pollution degree 2 Accuracy Range Operating temp. range Storage temp. range Relative humidity Elevation Deployment METRAHIT EXTRA, METRAHIT ETECH, METRAHIT EBASE Measuring category CAT III CAT IV Operating voltage 1000 V 600 V Test voltage 6.
Maintenance – Calibration 9 Maintenance and Calibration ! 9.1 Attention! Disconnect the instrument from the measuring circuit before opening the battery compartment lid or fuse cover in order to replace batteries or fuses! Function Meaning FUSE Current measurement Blown fuse In all operating modes Battery voltage has fallen below 1.8 V Measurement Indicates overflow 9.2 MEASURE SETUP 1nFo FUNC ENTER bAtt: 2.75 V.
Maintenance – Calibration Replacing the Batteries ! Attention! Disconnect the instrument from the measuring circuit before opening the battery compartment lid in order to replace the batteries. If the fuse is blown or has not been inserted, “FuSE” appears at the digital display. The fuse interrupts the current measuring ranges. All other measuring ranges remain functional. fuse ➭ Set the instrument face down onto the working surface.
Maintenance – Calibration ! Attention! Use specified fuses only! If fuses with other blowing characteristics, other current ratings or other breaking capacities are used, the operator is placed in danger, and protective diodes, resistors and other components may be damaged. The use of repaired fuses or short-circuiting the fuse holder is prohibited.
Maintenance – Calibration 9.6 Recalibration The respective measuring task and the stress to which your measuring instrument is subjected affect the ageing of the components and may result in deviations from the guaranteed accuracy. If high measuring accuracy is required and the instrument is frequently used in field applications, combined with transport stress and great temperature fluctuations, we recommend a relatively short calibration interval of 1 year.
Accessories 10 Accessories 10.1 General The extensive accessories available for our measuring instruments are checked for compliance with currently valid safety regulations at regular intervals, and are expanded as required for new applications.
Accessories 10.4 Interface Accessories (not included) USB X-TRA Bidirectional Interface Adapter This adapter makes it possible to connect multimeters of the STARLINE series which are equipped with a serial IR interface to the USB port at a PC. The adapter allows for data transmission between the multimeter and the PC.
Index 11 Index Numerics D 0.diSP ..................................................................... 49 dAtE ...................................................................48, 50 dbrEF .......................................................................49 Default Settings ......................................................51 Diode Test ...............................................................36 Display Illumination ................................................
Index S Safety Precautions ...................................................8 Software Enabling ....................................................3 Standard Equipment ................................................2 Switching the Instrument On Manual ..........................................................16 Via PC ............................................................16 Symbols Digital Display ...............................................13 Instrument ........................................
Edited in Germany Subject to change without notice A pdf version is available on the internet GMC-I Messtechnik GmbH Südwestpark 15 90449 Nürnberg • Germany Phone +49 911 8602-111 Fax +49 911 8602-777 E-Mail info@gossenmetrawatt.com www.gossenmetrawatt.
