Operating Instructions METRACAL⏐MC Multimeter, Calibrator 3-349-566-03 3/7.
Standard Equipment Scope of Delivery 1 Multimeter, calibrator 1 KS29 measurement cable set 2 Batteries 1 Condensed operating instructions 1 CD ROM (content: operating instructions, data sheet and more) 1 DKD calibration certificate Contact Persons Functions Overview Multimeter Calibrator / Simulator V AC / Hz TRMS • — V DC • • Hz (V AC) • Pulse generator / frequency generator A AC / Hz TRMS • — • Current sensor / current sink • — Functions A DC Hz (A AC) Ω • • Continuity • — Diode
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.
Standard Equipment Recalibration Service Our service center calibrates and recalibrates (e.g. after one year as part of your test equipment monitoring system, prior to use etc.) all instruments from GMC-I Messtechnik GmbH and other manufacturers, 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.
Contact Persons GMC-I Messtechnik GmbH 5
Table of Contents Contents Page 1 Safety Features and Precautions ....................................... 8 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 12 3 Initial Start-Up ................................
Table of Contents Contents Page 6.6.2 6.7 6.7.1 6.7.2 6.7.3 Current Source ............................................................................. 52 Interval Functions, Ramp Functions ................................................. 53 Interval Sequences – INT Function .................................................. 53 Read-Out a Periodic Ramp – RAMP Function .................................. 56 Dual Mode (simultaneous simulation and measurement) ..................
Safety Precautions 1 Safety Features and Precautions You have selected an instrument which provides you with high levels of safety. This instrument fulfills all requirements of applicable European and national EC directive. We confirm this with the CE mark. The relevant declaration of conformity can be obtained from GMC-I Messtechnik GmbH. The device has been manufactured and tested in accordance with safety regulations IEC 61010–1:2001 / DIN EN 61010–1/ VDE 0411–1:2002.
Safety Precautions • Make certain that the measurement cables are in flawless condition, e.g. no damage to insulation, no interruptions in cables or plugs etc. • Device functions may not be executed in electrical circuits with corona discharge (high-voltage). • Special care is required when measurements are made in HF electrical circuits. Dangerous pulsating voltages may be present. • Measurements under moist ambient conditions are not permitted.
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 performing repairs or replacing 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 ! 1.3 Meanings of Danger Symbols Warning concerning a source of danger (attention: observe documentation!) Meanings of Acoustic Warning Signals (2x) Warning for dangerous voltage at the measurement input: U > 33 V AC or U > 70 V DC (double acoustic signal) ... Warning for excessive current in the 300 mA measuring range: > 310 mA (intermittent acoustic signal) ...
Operating Overview – Connections, Keys, Rotary Switch, Symbols 2 Operating Overview – Connections, Keys, Rotary Switch, Symbols 15 → section 8 14 section 3.1 ← 1 → section 4.3 section 7 ← 13 2 → section 4.1.2 section 3 ← 12 3 → section 3 section 7 ← 11 4 → section 5 10 5 → section 7 section 4.4 ← 6 → section 3 ff 7 → section 1.2 8 → section 6 9 section 4.1← Max.
Operating Overview – Connections, Keys, Rotary Switch, Symbols Symbols Used in the Digital Display 1 2 3 4 5 6 7 8 9 19 18 17 16 9 10 20 21 22 23 24 11 12 13 15 Battery Level Indicator 14 Battery full * Battery OK * Battery weak Battery (almost) dead, U < 1.8 V * Calibration function: current ISink possible (U > 2.
Operating Overview – Connections, Keys, Rotary Switch, Symbols Symbols Used for Rotary Switch Positions Rotary Switch V V~ Hz (V) Ω Ω SEL — 0/2 1 0/2 Display mV, V DC mV, V ~ AC TRMS Hz, kHz ~ AC Ω, kΩ, MΩ 1 ς — V Temp. TC — Temp. RTD — mA mA~ — — — DC °C types B ...
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) s IR t See also section 3.1 regarding location of the power pack adapter socket. 5V/600mA Fuse for current measuring ranges, see section 10.
Initial Start-Up – Setup 3 Initial Start-Up 3.1 Inserting Batteries or Rechargeable Batteries Be certain to refer to section 10.2 regarding correct battery installation. Momentary battery voltage can be queried in the Info menu (see section 7.3). ! Attention! Disconnect the instrument from the measuring circuit before opening the battery compartment lid in order to replace the batteries. Operation With Power Pack (accessory, not included, see section 11.
Initial Start-Up – Setup 3.4 Switching the Instrument Off Switching the Instrument Off Manually Ð Press the ON / OFF | LIGHT key until 0FF appears at the display. Shutdown is acknowledged with a brief acoustic signal. Ð Complete shutdown of all functions including the IR interface is accomplished by turning the rotary switch to OFF. In the calibration function, the output can be shut down separately with the OUT | ENTER key. Shutdown is acknowledged with a brief acoustic signal.
Control Functions 4 Control Functions 4.1 Selecting Measuring Functions and Measuring Ranges The desired measuring function (white symbols) is selected with the rotary switch. Double functions like Hz and continuity testing are selected with the OUT | ENTER key. 4.1.1 Automatic Range Selection The multimeter is equipped with auto-ranging for all measuring functions except for temperature measurement, and diode and continuity testing. Auto-ranging is active as soon as the instrument is switched on.
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 4.3 Display (LCD) 4.3.1 Exceeding the Measuring Range Measured Value, Unit of Measure, Type of Current, Polarity The measured value appears at the digital display with decimal and plus or minus sign. The selected unit of measure and current type are displayed as well. A minus sign appears to the left of the value during the measurement of zero-frequency quantities, if the plus pole of the measured quantity is applied to the “⊥” input.
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 10 V. The first measured value is 5 V and is stored to memory because it is greater than 10% of the measuring range. As soon as the measured value drops to less than 10% of the measuring range, i.e. amounts to less than 1 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 multimeter 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 In order to be able to observe measured values during recording, switch to the measuring function by pressing MEAS / CAL | SETUP. After pressing MEAS / CAL | SETUP once again, the display is returned to the 1nfo menu where memory occupancy can be queried with the 0CuPP parameter. Note As soon as memory is full, the “Store” segment is cleared from the display.
Control Functions GMC-I Messtechnik GmbH 25
V/Hz, Ω, Temperature, 5 and A/Hz Measurements Measurements 5.1 Switching from the Calibration Function to the Measuring Function If any calibration function is active, press and hold the MEASURE / CAL | SETUP key in order to activate the measuring function. CALIBRATOR MULTIMETER V~ 15.000 V calib 0050.0 Hz Hz Hz MEAS/CAL SETUP Long 0230.
V/Hz, Ω, Temperature, 5.2 Voltage Measurement 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. Contact hazards exist anywhere, where voltages of greater than 33 V (RMS) may occur.
V/Hz, Ω, Temperature, and A/Hz Measurements 5.2.1 Direct Voltage Measurement, V DC Note Set the CL iP parameter to 0FF in the current clamp setup menu. Otherwise all measured values are displayed in mA, corrected by the amount resulting from the selected transformation ratio for an interconnected current clamp sensor. MEAS / CAL SETUP OUT ENTER 1nFo ... SET OUT ENTER 1 /10/100/1000 / 0ff time ... CL IP V 020.
V/Hz, Ω, Temperature, 5.2.2 Alternating Voltage and Frequency Measurement, V AC and Hz Ð In accordance with the voltage or frequency to be measured, turn the rotary switch to V~. Ð Connect the measurement cables as shown. The “⊥” connector jack should be grounded. V~ 0230.6 Note: See note regarding the CLiP parameter in section 5.2.1. ZERO/SEL ESC Note An intermittent acoustic signal warns the operator if the measured value exceeds the upper range limit in the 300 V range.
V/Hz, Ω, Temperature, and A/Hz Measurements Voltage Comparator for Displaying Dangerous Voltage The input signal or measuring signal is checked by a voltage comparator for dangerous peaks. Where U > 33 V AC or U > 70 V DC, two acoustic signals are generated. 5.2.3 Transient Overvoltages The multimeters are protected against transient overvoltages of up to 8 kV with wave-front durations of 1.2 ms and halftimes of 50 μs in the voltage measuring range.
V/Hz, Ω, Temperature, 5.3 Resistance Measurement Ω Ð Disconnect supply power from the electrical circuit of the device to be measured, and discharge all high-voltage capacitors. Ω 000.00 Ð Make sure that the device under test is voltage-free. Interference voltages distort measurement results! Refer to section 5.2.1 regarding testing for the absence of voltage with the help of the direct voltage measurement. Measuring ranges: 300 Ω … 30 MΩ Ð Connect the device under test as shown.
V/Hz, Ω, Temperature, and A/Hz Measurements 5.4 Continuity Test Ð Disconnect supply power from the electrical circuit of the device to be measured, and discharge all high-voltage capacitors. Ω 0000.8 Ð Make sure that the device under test is voltage-free. Interference voltages distort measurement results! Ω Ð Set the rotary switch to Ω. ZERO/SEL ESC Ð Press the SEL key. Ð Connect the conductor path under test as shown. 0000.
V/Hz, Ω, Temperature, 5.5 Diode Testing with Constant Current of 1 mA Ð Disconnect supply power from the electrical circuit of the device to be measured, and discharge all high-voltage capacitors. 1.8569 Ð Make sure that the device under test is voltage-free. Interference voltages distort measurement results! Refer to section 5.2.1 regarding testing for the absence of voltage with the help of the direct voltage measurement.
V/Hz, Ω, Temperature, and A/Hz Measurements 5.6 Temperature Measurement Temperature measurement is performed with a thermocouple (accessory, not included), which is connected to the voltage input. Alternatively, a resistance thermometer can be used. Selecting the Unit of Measure for Temperature MEAS / CAL SETUP tempunit 1nFo ... setup OUT ENTER °C / °F OUT ENTER time ...
V/Hz, Ω, Temperature, 5.6.2 Measurement with Resistance Thermometers Ð Set the rotary switch to “TempRTD”. The last selected resistance thermometer type remains in memory and is accordingly displayed. There are two different ways to compensate for cable resistance: and A/Hz Measurements measurements, and appears at the top left of the measurement display. Cable resistance remains in memory even after the instrument has been switched off. Automatic Compensation Ð Press and hold the ZERO / SEL | ESC key.
V/Hz, Ω, Temperature, and A/Hz Measurements MULTIMETER ZERO/SEL ESC Temp RTD Pt100 Pt1000 Ni100 Ni1000 MAN / AUTO DATA/MIN/MAX RL 0.4 100.5 OUT ENTER RTD Pt1000 OUT ENTER short leads R < 50 Ω °C ZERO/SEL ESC meas Long rleads 001.00 Ω ZERO/SEL ESC R < 50 Ω set leads 00.
V/Hz, Ω, Temperature, 5.7 Capacitance Measurement Ð Disconnect supply power from the electrical circuit of the device to be measured, and discharge all high-voltage capacitors. 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! ! + – + 0V! + ”. Ð Connect the (discharged!) device under test to the sockets with the measurement cables as shown.
V/Hz, Ω, Temperature, 5.8 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. • 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, Ω, Temperature, 5.8.1 Direct Current Measurement, A DC Ð First disconnect supply power from the measuring circuit or the power consumer (1), and discharge any capacitors. mA 003.50 Ð Set the rotary switch to mA . Ð Safely connect the measuring instrument (without contact resistance) in series to the power consumer (2) as shown. Ð Switch supply power to the measuring circuit back on (3). Ð Read the display.
V/Hz, Ω, Temperature, and A/Hz Measurements 5.8.2 Alternating Current and Frequency Measurement, Direct Connection, mA AC and Hz Ð First disconnect supply power from the measuring circuit or the power consumer (1), and discharge any capacitors. Ð In accordance with the current or frequency to be measured, turn the rotary switch to A~ or Hz. Ð Select the desired measured quantity by briefly pressing the OUT | ENTER multifunction key.
V/Hz, Ω, Temperature, and A/Hz Measurements 5.8.3 Direct Current Measurement with Current Clamp Sensor, mA DC Voltage/Current Transformer Output When a current clamp sensor is connected to the multimeter ( V input / mA input), all current displays appear with the correct value in accordance with the selected transformation ratio.
V/Hz, Ω, Temperature, and A/Hz Measurements 5.8.4 AC 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 / mA input) all current displays appear with the correct value in accordance with the selected transformation ratio.
V/Hz, Ω, Temperature, 5.8.5 Direct and Alternating Current Measurement with Current Clamp Transformer, mA DC, mA AC and Hz Current/Current Transformer Output When a current clamp transformer is connected to the multimeter ( mA input), all current displays appear with the correct value in accordance with the selected transformation ratio.
Calibration Functions: V – Hz 6 – Ω – Temp – mA – mA Calibration Functions 6.1 Switching from the Measuring Function to the Calibration Function If any measuring function is active, press and hold the MEASURE / CAL | SETUP key in order to switch the calibration function. The standby function is automatically activated during switchover. MULTIMETER V~ CALIBRATOR 0030.6 V~ AC V Hz MEAS/CAL SETUP 0.000 V Long calib 0000.
Calibration Functions: V – Hz 6.2 Voltage Source [V] Voltages within the following ranges can be simulated: 0 … ±60 mV, 0 … ±300 mV, 0 … 3 V, 0 … 10 V and 0 … 15 V. Resistance of the connected circuit should not be any less than 1 kΩ. + – ≥1kΩ + Device to be Calibrated e.g. Measuring Transducer – Input + – Ω – Temp – mA – mA Selecting a Voltage Range for the Fixed Value Function Ð Press the ZERO / SEL | ESC key in order to switch to the [select range] menu.
Calibration Functions: V – Hz – Ω – Temp – mA – mA 6.3 Pulse, Frequency Generator (positive square-wave pulse) [Hz] Voltage and frequency can be set independent of each other for frequency generators. The output signal is a square wave. Resistance of the connected circuit should not be any less than 1 kΩ. Ð Select the /HZ calibration function with the rotary switch. Ð Switch the calibrator on by pressing the ON / OFF | LIGHT key.
Calibration Functions: V – Hz 6.4 Resistance Simulation [Ω] The resistance simulator is capable of simulating resistors using 2-wire connection for the following range: 5 … 2000 Ω. – ON/OFF LIGHT + Device to be Calibrated – Input + Measuring Current: 50 μA ... 5 mA Ð Select the Ω calibration function with the rotary switch. Ð Switch the calibrator on by pressing the ON / OFF | LIGHT key. Ð Connect the device to be calibrated with the measurement cable as shown.
Calibration Functions: V – Hz – Ω – Temp – mA – mA 6.5 Temperature Simulation [°C / °F] The temperature simulator is capable of simulating resistance temperature detectors (RTD) or thermocouples (TC) with specification of the external reference junction temperature. Ð Select the Temp RTD or Temp TC calibration function with the rotary switch. Ð Switch the calibrator on by pressing the ON / OFF | LIGHT key. The last selected temperature sensor is displayed.
Calibration Functions: V – Hz 6.5.1 Temperature Simulation for Resistance Thermometers – RTD Temperature Setting Resistance temperature detectors (types Pt100, Pt1000, Ni100 and Ni1000) are simulated by means of resistance values. Abbreviated Instructions Select calibration function. – Ω – Temp – mA – mA 6.5.2 Temperature Simulation for Thermocouples – TC Temperature Setting Thermocouples (types B, E, J, K, L, N, R, S, T and U) are simulated with voltage.
– mA No external voltage may be applied to the calibrator jacks in this operating mode. The calibrator is protected against brief application of large external voltages with a replaceable fuse in the event of operator error (see section 10.3). Function Description and Applications 10 different types of thermocouples can be selected, and can be simulated within the temperature ranges specified by IEC/DIN.
Calibration Functions: V – Hz 6.6 Current Source and Current Sink [mA] Ð Select the mA current sink ( ) or mA current source ( ) calibration function with the rotary switch. Ð Switch the calibrator on by pressing the ON / OFF | LIGHT key. The last selected current range is displayed. Ð Connect the device to be calibrated with the measurement cables (see example in section 6.6.1).
– Ω – Temp – mA Calibration Functions: V – Hz – mA 6.6.1 Current Sink – Simulation of a 2-Wire Transmitter A current sink (0 … 24 mA) or current loop load can be simulated with this function. The calibrator regulates the current, which flows via the calibrator jacks from an external power supply, independent of direct voltage applied to the jacks (4 … 27 V). The calibrator varies internal resistance such that the selected current value is maintained.
Calibration Functions: V – Hz 6.7 Interval Functions, Ramp Functions Two types of setpoint sequences can be generated in order to simulate sensor conditions at the inputs of transducers, transmitters and buffer amplifiers: • Interval sequences (see section 6.7.1) automatic (periodic) or manually controlled sequences or • Ramp sequences (see section 6.7.
Calibration Functions: V – Hz – Ω – Temp – mA – mA Example of a Manually Controlled Interval Sequence Setting the Interval Parameters ZERO/SEL ESC seleCt range 300 mV … 15 V 1nt MEAS/CAL SETUP Initial value: 1nt start 02.000 V OUT ENTER Final value: 1nt end 10.000 V OUT ENTER OUT ENTER OUT ENTER Steps: 1nt steps 03.0 Dwell time: 1nt t1 Repetition: 1nt mode auto 00.05 min.
– Ω – Temp – mA Calibration Functions: V – Hz Automatic Interval Sequence Automatic execution of a programmed sequence range is above all advisable if feed to the signal circuit and scanning of the peripheral device under test are physically separated. After entering all parameters for the “automatic interval sequence” output function (see above) (Int, mode = auto), the sequence can be started and stopped whenever desired, as well as resumed.
Calibration Functions: V – Hz – Ω – Temp – mA – mA 6.7.2 Read-Out a Periodic Ramp – RAMP Function Ramp-type signals can be used to test the dynamic performance of devices to be calibrated, or entire measuring circuits. An example would be performance of a control loop with a setpoint specified via the analog setpoint input at the controller. The instrument can be used to replace costly hardware and software for the set-up of long-term test bays with cyclical time sequences.
Calibration Functions: V – Hz – mA The relationship between the output signal and each of the key operations is depicted with the help of the following example. Setting Ramp Parameters ZERO/SEL ESC – Ω – Temp – mA seleCt range 300 mV … 15 V ramp MEAS/CAL SETUP Initial value: ramp start 02.000 V OUT ENTER Final value: ramp end 10.000 V OUT ENTER Rise time: ramp t1 00.05 min.s OUT ENTER Dwell time: ramp t2 00.08 min.s OUT ENTER Fall time: ramp t3 00.
– Ω – Temp – mA Calibration Functions: V – Hz – mA Example of a Periodic Ramp Sequence Controlled by Manual Intervention U [V] t1 up LCD: t2 run t3 dn t3 hld t3 up t3 run t3 hld t1 dn HOLD CONT 10 V HOLD CONT 2V 6.7.3 Dual Mode (simultaneous simulation and measurement) All simulation functions can be activated and, at the same time, transmitter signal U or I can be measured in the most commonly used measuring ranges (30 V DC or 30 mA DC) in the dual operating mode.
– Ω – Temp – mA Calibration Functions: V – Hz + mA Temp Ω + V Hz SET ZERO/SEL ESC DUAL 0FF Long 0ff – – mA Vdc 30 mA T 1dc 30 V mA OUT ENTER Acknowledge Select Range ZERO/SEL ESC OUT ENTER select range / select sensor Change Value 000.00 00.340 V mA DUAL OUT ENTER Acknowledge 02.
Device and Measuring Parameters 7 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. Ð The menu mode is accessed by pressing the MEAS / CAL | SETUP key, assuming that the instrument is switched on and set to “Measure” (measuring mode). “1nFo” appears at the display. Ð The main menus, i.e.
Device and Measuring Parameters 7.1 Paths to the Various Parameters 7.2 List of All Parameters Parameter 020.00 V DC AC TRMS MEAS / CAL SETUP 1nfo Main Menus → 1nFo StorE SEnd SET OUT ENTER OUT ENTER OUT ENTER OUT ENTER Sub-Menus/Parameters ↓ Query Set bAtt: 000.0 0CCvP: dAtE:/ t iME: caldat: 1tEMP: CLEAr StArt/ StoP Set dAtE Set StArt tempext StoP tempunit beep rAtE Acknowledge Acknowledge OUT ENTER OUT ENTER 0.
Device and Measuring Parameters 7.3 Querying Parameters – InFo Menu (as moving letters) bAtt – query battery voltage OUT MEAS / CAL 1nFo ENTER bAtt: 3.1 V. SETUP OCCUP – query memory occupancy OUT MEAS / CAL 1nFo ENTER bAtt: ... 0CCvP: 000.0 % SETUP querying date and time OUT MEAS / CAL 1nFo ENTER SETUP bAtt: ... 31.12.2009 (DD.MM.YYYY) t iME: 13:46:56 (hh:mm:ss) D = day, M = month, Y = year, h = hour, m = minute, s = second Date and time must be reentered after replacing the batteries.
Device and Measuring Parameters APoFF – specified time for automatic shutdown and continuous ON DMM The instrument is switched off automatically if the measured value remains unchanged for a long period of time, and if none of the keys or the rotary switch have been activated before the specified time “APoFF” (entered in minutes) has elapsed.
Device and Measuring Parameters tiME – set time Entering the correct time makes it possible to acquire measured values in real-time. MEAS / CAL SETUP OUT ENTER 1nFo ... SET OUT ENTER time ... t iME 10:24:30 (hh:mm:ss) OUT ENTER Ð Disconnect the device from the measuring circuit. 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. MEAS / CAL SETUP OUT ENTER 1nFo ...
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Interface Operation 8 Interface Operation The METRACAL MC is equipped with an infrared interface for communication with the PC. Commands are optically transferred through the instrument housing by means of infrared light to an interface adapter (accessory: USB X-TRA), which is plugged onto the METRACAL MC. The adapter’s USB interface allows connection to the PC via an interface cable. Commands and parameters can be transmitted from the PC to the METRACAL MC.
Interface Operation 8.2 Configuring Interface Parameters 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: 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 9 Technical Data Simulator for Temperature Sensors (resolution: 0.1 K) Sensor Type Simulation Range Resolution 30,000 Digits (4¾ places) Max. Load With a Load of ±(% S + mV) Direct Voltage Source 0…±60 mV V 1 μV 0…±300mV 0.01 mV 0… 3 V 0.1 mV 15 mA 0 … 20 mA 1 μA 17 V 0 … 20 mA 0.1 + 0.2 0.05 + 0.2 Vin = 4 ... 27 V Imax 18 mA Umax 27 V 0 … 24 mA Resistance Simulation Ω 1) 5…2000 Ω 0.1 Ω Sensor Current [mA] ±(% S + Ω) Imax 0.05...0.1..4...5 0.05 + 0.
Technical Data Multimeter Section Meas. Function V Measuring Range 60mV 4) 300 mV 3 V 30 V 300 V Resolution at Upper Range Limit 30000 1) (60000) 1 10 100 1 10 3100 1) μV μV μV mV mV DC 300 μA 3 mA 30 mA 300 mA 10 100 1 10 nA nA μA μA 150 150 150 150 mV mV mV mV Open-circuit voltage ς Ω F 300 3 30 300 3 30 300 6 Ω kΩ kΩ kΩ MΩ MΩ Ω V 30 300 3 30 300 nF nF μF μF μF 1) 10 mΩ 0.1 Ω 1 Ω 10 Ω 100 Ω 1 Ω 0.1 Ω 1 mV 10 100 1 10 100 pF pF nF nF nF 0.6 V 0.6 V 0.6 V 0.6 V 0.6 V 0.
Technical Data Meas. Function Measuring Range 300 Hz 3 kHz 30 kHz 300 kHz Hz Resolution at Upper Range Limit 30,000 (60,000)1) 0.01 Hz 0.1 Hz 1 Hz 10 Hz 3100 Intrinsic Uncertainty at Highest Resolution under Reference Conditions Input Impedance 1) fmin 1 Hz 10 Hz 6) Overload Capacity 3) Value Time 300 V 300 V 200 V 20 V Continuous ±(...% rdg. + ... d) 0.
Technical Data Influencing Quantities and Influence Error Influencing Quantity Sphere of Influence Measured Quantity / Measuring range 1) Influence Error ± (... % rdg. + d)/10 K V DC, °C (TC) 0.1 + 10 V AC 0.5 + 10 3/30 mA DC 0.1 + 10 3/30 mA AC 0.5 + 10 300 mA DC, AC 0.5 + 10 300Ω/3/30/300 kΩ 2L 0.2 + 10 0 … +21 °C Temperature and 3 MΩ 2L 1 + 10 30/300 nF/3/30/300 μF 0.5 + 10 Hz 0.1 + 10 °C (RTD) 0.2 + 10 Influencing Quantity Measured Quantity Waveform Frequency > 65 Hz ...
Technical Data Influencing Quantity Sphere of Influence Interference quantity max. 250 V Common mode interference voltage Series-mode interference voltage Interference quantity max. 250 V 50 Hz, 60 Hz sine Interference quantity V , respective nominal value of the measuring range, max. 250 V , 50 Hz, 60 Hz, sine Interference quantity max. 250 V Real-Time Clock Resolution Accuracy Temp. Influence Reference Conditions Ambient temperature Relative humidity Meas. quantity frequency Meas.
Technical Data Power Supply Battery Service life 2 ea. 1.5 V mignon cell (AA), alkaline manganese per IEC LR6 or equivalent rechargeable battery With alkaline manganese (2600 mAh) Measuring Function Current Service life V, Hz, mA, Ω2, F, °C 25 mA 70 h Standby (MEM + clock) 350 μA Approx. 1 year mV, thermocouple 80 mA 25 h 15 V 200 mA 10 h Calibration Function Battery test Mains Power Service life Ω, RTD 130 mA 15 h Sink, 20 mA (25 V) 300 mA 5h Source, 20 mA max.
Technical Data Mechanical Design Protection IP 65 Table Excerpt Regarding Significance of IP Codes IP XY Protection against foreign IP XY (1st digit X) object entry (2nd digit Y) 6 dust-proof 5 Dimensions Weight Protection against the penetration of water jet-water 200 x 87 x 45 mm Approx.
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Maintenance – Calibration 10 Maintenance and Calibration ! Attention! Disconnect the instrument from the measuring circuit before opening the battery compartment lid or fuse cover in order to replace batteries or fuses! Charge level The current battery charge level can be queried in the “1nfo” menu: MEAS / CAL SETUP 1nFo OUT ENTER bAtt: 2.75 V. 10.1 Displays – Error Messages Message Function Meaning FUSE Current Measurement Blown fuse In all operating modes Battery voltage has fallen below 1.
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 Ð 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 10.6 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 11 Accessories 11.1 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 11.4 Interface Accessories (not included) USB X-TRA Bidirectional Interface Adapter This adapter makes it possible to connect the METRACAL MC to a USB port at a PC. The adapter allows for data transmission between the multimeter and the PC. METRAwin 10 PC Analysis Software METRAwin 10 PC software is a multilingual, measurement data logging program for recording, visualizing, evaluating and documenting measured values from METRAHIT multimeters.
Keyword Index 12 Keyword Index Numerics 0.diSP ................................................................... 62 Diode Test ............................................................. 33 Display Illumination .............................................. 16 A E O Addr ...................................................................... 67 APoFF ................................................................... 63 Automatic Shutdown Disabling .................................................
Keyword Index Symbols Digital Display ...............................................13 Instrument .....................................................15 Rotary Switch Positions ................................14 T Temperature Measurement With Resistance Thermometers ...................35 With Thermocouples .....................................34 tiME ....................................................................... 64 Training ...................................................................
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.
