Operating Instructions METRAHITULTRA and METRAHITULTRA BT High Resolution TRMS Digital Multimeter 3-349-684-03 9/5.
Scope of Delivery Contact Persons Scope of Delivery 1 Multimeter 1 KS17-2 measurement cable set 2 Batteries 1 DAkkS calibration certificate 1 Rubber holster 1 Condensed operating instructions * Function M248A / M248B Current, ADC Current, AAC+DC TRMS Current, AAC TRMS Bandwidth @ AAC+DC or AAC * 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 amended as required for new applications.
Scope of Delivery Recalibration Service Our service center calibrates and recalibrates all instruments supplied by GMC-I Messtechnik GmbH, as well as other manufacturers, (for example after one year as part of your test equipment monitoring system, and prior to use etc.) and offers free test equipment management. Repair and Replacement Parts Service Calibration Center* and Rental Instrument Service If required please contact: GMC-I Service GmbH Service Center Thomas-Mann-Str.
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Table of Contents Content Page Content 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 Content Page Content Page 6 Device and Measuring Parameters ................................... 48 10 6.1 6.2 6.3 6.4 6.5 6.6 Paths to the Various Parameters .................................................... 49 List of All Parameters .................................................................... 49 Querying Parameters – InFo Menu .................................................. 50 Entering Parameters – SETUP Menu ...............................................
Safety Precautions 1 Safety Features and Precautions You have selected an instrument which provides you with high levels of safety. This instrument fulfills the requirements of the applicable EU guidelines and national regulations. We confirm this with the CE mark. The relevant declaration of conformity can be obtained from GMC-I Messtechnik GmbH.
Safety Precautions • The multimeter may only be operated by persons who are capable of recognizing touch hazards and taking the appropriate safety precautions. Touch hazards according to the standard exist anywhere, where voltages of greater than 33 V TRMS or 70 V DC may occur. Avoid working alone when taking measurements which involve touch hazards. Be certain that a second person is present.
Safety Precautions Opening of Equipment / Repair The equipment may be opened only by authorized service personnel to ensure the safe and correct operation of the equipment and to keep the warranty valid. Even original spare parts may be installed only by authorized service personnel. In case the equipment was opened by unauthorized personnel, no warranty regarding personal safety, measurement accuracy, conformity with applicable safety measures or any consequential damage is granted by the manufacturer.
Safety Precautions 1.2 ! Meanings of Danger Symbols 1.
Operating Overview – Connections, Keys, Rotary Switch, Symbols 2 Operating Overview – Connections, Keys, Rotary Switch, Symbols 16 section 7 15 section 3.1 * 1 section 4.3 section 6 2 section 4.1 14 section 3 13 3 section 3 12 4 section 5 11 5 section 6 section 6 section 4.4 6 section 3 ff. 7 section 1.2 8 section 3 9 section 4.1 10 section 4.1 Max.
Operating Overview – Connections, Keys, Rotary Switch, Symbols Symbols Used in the Digital Display 1 2 3 4 5 6 7 7 18 17 16 15 14 8 19 20 21 22 23 24 25 262728 29 9 10 11 12 13 Battery Level Indicator Battery full Battery OK Battery weak Battery (almost) dead, U < 1.
Operating Overview – Connections, Keys, Rotary Switch, Symbols Symbols Used for Rotary Switch Positions Switch V~ Hz (V) V~ 1kHz dB V V V dB V MHz % 0/2 1 V DC Auxiliary Display Hz V~ AC Hz V~ AC TRMS Hz V DC+AC TRMS Hz V DC+AC TRMS — — Hz — Measuring Function Alternating voltage, AC TRMS, full bandwidth / voltage frequency Voltage frequency, up to 300 kHz / alternating voltage, AC TRMS Alternating voltage, AC TRMS, with low pass filter (1 kHz) / voltage frequency Alternating voltage level measu
Operating Overview – Connections, Keys, Rotary Switch, Symbols User Interface Symbols in the Following Sections ... Scroll through main menu ... Scroll through submenu Select decimal point Increase/decrease value time Submenu/parameter (7-segment font) 1nFo Main menu (7-segment font, boldface) ▲IR ▼ Position of the power pack adapter socket, see also section 3.1 5V/600mA Fuse for current measuring ranges, see section 9.
Initial Start-Up – Setup 3 Initial Start-Up 3.1 Inserting Batteries or Rechargeable Batteries Be certain to refer to section 9.2 regarding correct battery installation. Momentary battery voltage can be queried in the Info menu (see section 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 ULTRA, not included, see section 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. If hazardous contact voltage has been detected (HV symbol appears), the instrument cannot be switched off.
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 4.1.2 Manual Measuring Range Selection Auto-ranging can be deactivated and measuring ranges can be selected manually in accordance with the following table by pressing the MAN / AUTO button. The desired measuring range can then be selected with the or scroll key. The instrument is automatically returned to automatic range selection when the MAN / AUTO key is pressed, the rotary switch is activated or the instrument is switched off and back on again.
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 section 4.1.2) or • With the DATA function (see section 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 main 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 3 V. The first measured value is 2.2 V and is stored to memory because it is greater than 5000 digits of the measuring range (= 0.3 V), and is thus reliably above the background noise level. As soon as the measured value drops to less than 3000 digits of the measuring range, i.e. amounts to less than 0.3 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 The instrument 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 permanent memory, and are retained even after the multimeter is switched off, and after battery replacement. The system acquires measured values relative to real-time. Stored measured values can subsequently be read out at the computer.
Control Functions Ending Recording ➭ If the instrument is in the measuring mode, return to the menu function by pressing the MEASURE | SETUP key. Select “StorE” again and acknowledge by pressing the FUNC | ENTER key. “StoP” blinks at the main display. store on StoP FUNC ENTER store ➭ Acknowledge the “StoP” display by pressing FUNC | ENTER. The STORE display segment in the header is cleared, indicating that recording has been ended.
Control Functions 4.5.2 Storage of Individual Values using the SAMPLE or dAtA Sampling Rate If only individually selected values need to be saved, SAMPLE must be selected as the StorE > rAtE sampling value. If memory mode operation is then started, a single measured value is saved to permanent memory with time stamp when the DATA/MIN/MAX key is pressed and held until two rapidly repeating acoustic signals are generated.
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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/dB – , Temperature, and A/Hz Measurements 5.1.1 Direct and Pulsating Voltage Measurement, V DC and V (DC+AC) Note Set the CL iP parameter to 0FF in the current clamp setup menu. Otherwise all measured values are displayed in amperes, corrected by the amount resulting from the selected transformation ratio for an interconnected current clamp sensor. MEASURE SETUP FUNC ENTER 1nFo ... SET FUNC ENTER t iME ... CL IP CL Ip set: 1 /10/100/1000 / 0ff CL ip = 0FF ! V 0020.
V/Hz, , Temperature, and A/Hz Measurements Frequency Measurement in the V (DC+AC) Switch Position ➭ Connect the measured quantity in the same way as for voltage measurement. CL ip = 0FF ! ➭ Manually select the measuring range for the voltage amplitude. V ➭ Repeatedly press the multifunction key FUNC | ENTER until the unit of measure Hz appears at the display. Lowest measurable frequencies and maximum allowable voltages are listed in section 8, “Technical Data”,.
V/Hz/dB – , Temperature, 5.1.2 Alternating Voltage and Frequency Measurement V AC and Hz V AC with Selectable Low-Pass Filter, V AC + FiL and dB V AC Note See note in section 5.1.1. ➭ In accordance with the voltage or frequency to be measured, turn the rotary switch to V~. ➭ Connect the measurement cables as shown. The “” connector jack should be grounded. Frequency Measurement ➭ Connect the measured quantity in the same way as for voltage measurement.
V/Hz, , Temperature, and A/Hz Measurements The active low-pass filter is indicated by the FILTER display. The multimeter is automatically switched to manual measuring range selection. Specified measuring accuracy is not reached with signals of greater than 100 Hz when the filter is active. V~ 050.000 Hz 1kHz dB Hz 229.20 AC TRMS V V Temp COM ~ FUNC ENTER Measuring Ranges: V~: 300 mV 600 V Max. 600 V (< 5 kHz) Max. 100 V (> 10 kHz) Hz: 5 Hz 300 kHz Pmax = 3 x 106 V x Hz 229.20 V 50.
V/Hz/dB – , Temperature, Alternating Voltage Level Measurement (dB) Voltage level measurement is used in order to ascertain overall attenuation or boosting of a U1 transmission system (shown here as a 4-pole setup). U2 VoltageLevel dB = 20 log -----U1 U2 Where U1 = UREF (reference level) = 0.775 V Result > 1: boosting Result < 1: attenuation and A/Hz Measurements Note No terminal resistors have been integrated into the device. It performs measurement with a high input impedance of 5 M.
V/Hz, , Temperature, and A/Hz Measurements 5.1.3 Frequency and Duty Cycle Measurement ➭ Set the rotary switch to MHz or %. MHz ➭ Connect the measurement cables as shown. 01.0323 Make sure that a current measuring range (“A”) has not been activated when the multimeter is connected for frequency or duty cycle measurement! ! FUNC ENTER U 015.000 Hz t tE tP Frequency Measurement, MHz A 5 V signal with a frequency of up to 1 MHz is measured and displayed using MHz as a unit of measure.
V/Hz/dB – , Temperature, 5.2 Resistance Measurement ➭ Disconnect supply power from the electrical circuit of the device to be measured, and discharge all high-voltage capacitors. 000.000 ➭ Make sure that the device under test is voltage-free. Interference voltages distort measurement results! Refer to section 5.1.1 regarding testing for the absence of voltage with the help of the direct voltage measurement. Measuring Ranges: 300 30 M ➭ Connect the device under test as shown.
V/Hz, , Temperature, and A/Hz Measurements 5.3 Continuity Test with Constant Current of 1 mA ➭ Disconnect supply power from the electrical circuit of the device to be measured, and discharge all high-voltage capacitors. 000.8 ➭ Make sure that the device under test is voltage-free. Interference voltages distort measurement results! ➭ Set the rotary switch to . FUNC ➭ Connect the conductor path under test as shown. ENTER “0 L” appears at the display in the case of an open connection.
V/Hz/dB – , Temperature, 5.4 Diode Testing with Constant Current of 1 mA ➭ Disconnect supply power from the electrical circuit of the device to be measured, and discharge all high-voltage capacitors. 000.8 ➭ Make sure that the device under test is voltage-free. Interference voltages distort measurement results! Refer to section 5.1.1 regarding testing for the absence of voltage with the help of the direct voltage measurement. ➭ Set the rotary switch to and A/Hz Measurements FUNC ENTER .
V/Hz, , Temperature, and A/Hz Measurements 5.5 Temperature Measurement Temperature measurement is performed with a type K thermocouple or a type Pt100 or Pt1000 resistance sensor (accessory, not included) which is connected to the voltage input. ➭ Connect the sensor to the two accessible jacks. The instrument displays the measured temperature using the selected unit of measure. Selecting the Unit of Measure for Temperature (°C = default value) MEASURE SETUP FUNC ENTER 1nFo ...
V/Hz/dB – , Temperature, 5.5.2 Measurement with Resistance Sensors ➭ Set the rotary switch to “TempTC” or “TempRTD”. The last selected temperature measurement or the last selected temperature 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. The sensor type, i.e. Pt100 or Pt1000, is detected automatically and displayed.
and A/Hz Measurements ➭ Make sure that the device under test is voltage-free. Capacitors must always be discharged before measurement is performed. Interference voltages distort measurement results! Refer to section 5.1.1 regarding testing for the absence of voltage with the help of the direct voltage measurement. ➭ Set the rotary switch to “ Note This function is above all intended for the measurement of components.
V/Hz/dB – , Temperature, 5.7 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. • Set up the measuring circuit in a mechanically secure fashion, and secure it against inadvertent breaks. Select conductor cross-sections and lay out connections such that they do not overheat.
V/Hz, , Temperature, and A/Hz Measurements 5.7.1 Direct and Pulsating Current Measurement, Direct Connection, A DC and A (DC+AC) ➭ First disconnect supply power from the measuring circuit or the power consumer, and discharge any capacitors. ➭ In accordance with the current to be measured, set the rotary switch to A or A . ➭ Select the type of current appropriate for the measured quantity by briefly pressing the multifunction key FUNC | ENTER.
V/Hz/dB – , Temperature, 5.7.2 Alternating Current and Frequency Measurement, Direct Connection, A AC and Hz ➭ First disconnect supply power from the measuring circuit or the power consumer, 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 multifunction key FUNC | ENTER.
V/Hz, , Temperature, and A/Hz Measurements 5.7.3 Direct and Pulsating Current Measurement with Current Clamp Sensor, A DC and A (DC+AC) Voltage/Current Transformer Output When a current clamp sensor is connected to the multimeter (V input), all current displays appear with the correct value in accordance with the selected transformation ratio.
V/Hz/dB – , Temperature, and A/Hz Measurements 5.7.4 Alternating Current Measurement with Current Clamp Sensor, A AC and Hz Voltage/Current Transformer Output When a current clamp sensor is connected to the multimeter (V input), all current displays appear with the correct value in accordance with the selected transformation ratio.
V/Hz, , Temperature, and A/Hz Measurements 5.7.5 Alternating Current Measurement with Current Clamp Transformer, A AC and Hz Current/Current Transformer Output When a current clamp transformer is connected to the multimeter ( mA/A input), all current displays appear with the correct value in accordance with the selected transformation ratio.
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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.
Device and Measuring Parameters 6.1 Paths to the Various Parameters 6.2 List of All Parameters Parameter 020.00 V DC AC TRMS MEASURE SETUP 1nfo Main Menus 1nFo StorE SEnd SET FUNC ENTER FUNC ENTER FUNC ENTER FUNC ENTER Submenus / parameters Set Query 000.0 bAtt: 0CCvP: dAtE/t iME: caldat/uer tEMPintern: CLEAr StArt/ StoP hyst rate trig t.
Device and Measuring Parameters 6.3 Querying Parameters – InFo Menu cALdAt – Query Calibration Date bAtt – Query Battery Voltage MEASURE SETUP 1nFo FUNC ENTER MEASURE SETUP 1nFo FUNC ENTER bAtt ... caldat 20.06.12 bAtt 2.9 V. vErSion – Query Firmware Version OCCUP – Query Memory Occupancy MEASURE SETUP 1nFo FUNC ENTER MEASURE SETUP 1nFo FUNC ENTER bAtt ... VEr 0.22 bAtt ... 0CCvP 000.
Device and Measuring Parameters 6.4 Entering Parameters – SETUP Menu tiME – Set Time Entering the correct time makes it possible to acquire measured values in real-time. MEASURE SETUP FUNC ENTER 1nFo ... SET FUNC ENTER t iME t iME SET: 10:24:18 (hh:mm:ss) FUNC ENTER Date and time must be reentered after replacing the batteries. dAtE – Enter Date Entering the current date makes it possible to acquire measured values in real-time. MEASURE SETUP FUNC ENTER 1nFo ...
Device and Measuring Parameters Note The auto power off function (APoFF parameter) is deactivated when dangerous touch voltage is applied. CLiP – Set Transformation Ratio (current clamp factor) See section 5.7.3 ff. bEEP – Set Limit Value for Continuity Testing MEASURE SETUP FUNC ENTER 1nFo ... SET FUNC ENTER t iME ... bEEP bEEP SET: 1, 10, 20 ... 500 FUNC ENTER (10 = default setting) tEMP unit – Select a Unit of Measure for Temperature MEASURE SETUP FUNC ENTER 1nFo ...
Device and Measuring Parameters tEMP intErn/ExtErn – Select Internal or External Reference Junction External Reference Junction: Specified Temperature MEASURE SETUP FUNC ENTER 1nFo ... SET FUNC ENTER t iME ... tEMP intern tEMP set: tEMP intern / tempextern extern set: 000. 0 °C FUNC ENTER FUNC ENTER (internal reference = default setting) bEEPEr on/oFF – Activate/Deactivate Acoustic Signals MEASURE SETUP FUNC ENTER 1nFo ... SET FUNC ENTER beeper set: on / off t iME ...
Device and Measuring Parameters rAtE – Set Transmission and Storage Rate The sampling rate specifies the time interval after which the respective measured value is transmitted to the interface, or to measured value memory. Any one of the following sampling rates can be selected: [mm:ss.0] 00:00.1, 00:00.2, 00:00.5, 00:01.0, 00:02.0, 00:05.0 [h:mm:ss.0] (h = hours, m = minutes, s = sec., 0 = tenths of a sec.
Device and Measuring Parameters V AC with 30,000 digits), it is not useful to set the trigger threshold above this measuring range span. It’s thus advisable to perform measurement with a fixed measuring range. Due to the fact that rapid momentary value acquisition (see section 4.5.1) has a large measuring range span, limit values of greater than 30,000 digits can be selected. Actual measurement is always executed using the sampling rate selected in “Store > rAtE”. MEASURE SETUP 1nFo ...
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 connection to the PC with an interface cable.
Interface Operation 7.2 Configuring Interface Parameters Switching from IR to Bluetooth: 1rStb – 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 (refers to METRAHIT ULTRA (M248A) and METRAHIT ULTRA BT (M248B), if Com ir has been set): iron: IR appears at the display and the infrared interface is active, i.e.
Technical Data 8 Technical Data Meas. Function Measuring Range V 300 mV 3 V 30 V 300 V 600 V dB A A A 58 Resolution at Upper Range Limit DC 309,999 1 V 10 V 100 V 1 mV 10 mV AC/AC+DC 30,999 10 V 100 V 1 mV 10 mV 100 mV 0.3 V / 3 V ... 600 V~ 300 A 3 mA 30 mA 300 mA 3 A 10 A Factor: 1:1/10/100/1000 0.03, 0.3, 3, 30 A 0.3, 3, 30, 300 A 3/30/300/3000 A 0.3, 3, 30, 300 A 3/30/300/3000 A 300 3 30 300 3 30 300 4,5 k k k M M V3 3099 0.
Technical Data Meas. Function F Measuring Range Resolution at Upper Range Limit 309,999 3 nF 30 nF 300 nF 3 F 30 F 300 F 3 mF — — — — — — — 30,999 — — — — — — — Intrinsic Uncertainty under Reference Conditions Conditions 3099 1 10 100 1 10 100 1 pF pF pF nF nF nF μF Discharge resistance 1 M 1 M 100 k 100 k 10 k 2.5 k (... % rdg. + ... d) 4 U0 max 2 2 2 2 2 2 2 V V V V V V V 1 2 3 4 5 6 0.001Hz 0.01 Hz 5 Hz 0.1 Hz 1 Hz 0.01...100 Hz 10 1 % 2.00 ... 98.00% 5.00 ... 95.
Technical Data Influencing Quantities and Influence Error Influencing Quantity Sphere of Influence Measured Quantity / Measuring Range 1 V V , dB 0.2 + 10 0.1 + 10 Temperature ,A ,A 30 nF, 300 nF, 3 F, 30 F 0.3 + 10 Frequency 0.5 + 10 3 nF, 300 F 3 + 10 Hz 0.05 + 5 2 C/F (Pt100/Pt1000) 0.1 + 10 C/F thermocouple K 2 0.1 + 10 With zero balancing Prerequisite: stable ambient temperature (t > 30 min.) Influencing Quantity Measured Quantity Influence Error (...% rdg. + ...
Technical Data Influencing Quantity Sphere of Influence Interference quantity: max. 600 V Common Mode Interference Voltage Series Mode Interference Voltage Meas. Quantity / Measuring Range V (3 V ... 600 V MR) , V , dB ,A 3 nF ... 300 F Internal clock 300 V/600 V > 50 dB V > 70 dB V > 120 dB Time format Resolution Accuracy Temperature influence +23 C 2 K 40 ... 75%, no condensation allowed Range: 45 ... 65 Hz Sinusoidal Range: 1.8 ... 3.
Technical Data Data Interface – Bluetooth (M248B only) Power Supply The METRAHIT ULTRA BT Bluetooth multimeter variant (M248B) is identical to the METRAHIT ULTRA (M248A), except that it is also equipped with a Bluetooth interface. Wireless data exchange via Bluetooth is an alternative to the optional IR-USB cable connection using the USB X-TRA accessory (Z216C). The METRAHIT ULTRA BT with Bluetooth interface is connected directly to the Bluetooth interface of a Windows PC or smartphone (Android).
Technical Data Display Acoustic Signals Transreflective LCD panel (65 x 36 mm) with display of up to 3 measured values, unit of measure, type of current and various special functions. For voltage For current Fuse Fuse link Background Illumination Background illumination is switched off approximately 1 minute after it has been activated. Digital Display / Char. Height 7-segment characters, main display: 13 mm, auxiliary display: 7.
Technical Data Electromagnetic Compatibility (EMC) Interference emission EN 610326-1:2013, class B Interference immunity EN 610326-1:2013 EN 610326-2-1:2013 Ambient Conditions Accuracy range Operating temp. range TA Storage temp. range Relative humidity Elevation Deployment 0 C to +40 C –10 C ... +50 C * –25 C ... +70 C (without batteries) Max.
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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 Measuring 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. ➭ 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 measuring tasks performed with your instrument, and the stressing it’s subjected to, influence aging of its components and may result in deviation from the specified levels of accuracy. In the case of strict measuring accuracy requirements, as well as in the event of use at construction sites with frequent stress due to transport and considerable temperature fluctuation, we recommend a relatively short calibration interval of once per 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) 10.4.1 Infrared Interface USB X-TRA Bidirectional Interface Adapter STARLINE multimeters which are equipped with a serial IrDa interface can be connected to a USB port at a PC with the adapter. The adapter allows for data transmission between the multimeter and the PC.
Index 11 Index A D Addr ........................................................................ 57 APoFF ..................................................................... 51 App METRALOG ..................................................... 71 Automatic Shutdown Disabling ....................................................... 17 Set Time ........................................................ 17 dAtE ...................................................................50, 51 Default Settings .....
Index Switching On Manual ..........................................................16 Via PC ............................................................16 Symbols Device ............................................................15 Digital Display ...............................................13 Rotary Switch Positions ................................14 T tEMP intErn/ExtErn .................................................52 tEMP unit ................................................................
Edited in Germany Subject to change without notice PDF version available on the Internet GMC-I Messtechnik GmbH Südwestpark 15 90449 Nuremberg Germany Phone: +49-911-8602-111 Fax: +49-911-8602-777 e-mail: info@gossenmetrawatt.com www.gossenmetrawatt.
