Gossen Metrawatt METRAHIT X-TRA, METRAHIT TECH, METRAHIT PRO, METRAHIT BASE, METRAHIT OUTDOOR User guide

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Operating Instructions

SECULIFE⏐HIT METRAHIT⏐X-

TRMS Digital Multimeter

TRA⏐OUTDOOR⏐TECH⏐PRO⏐BASE

3-349-352-03

5/1.08

Standard Equipment Contact Persons

Standard Equipment

1multimeter 1 KS17S measurement cable set 2 batteries 1 abbreviated operating instructions 1 CD ROM (contents: amongst other topics operating

instructions and data sheet)

1 DKD calibration certificate

Function

V AC / Hz TRMS (Ri ≥ 9 MΩ)

V AC TRMS (Ri = 1 MΩ)

V AC+DC TRMS (Ri ≥ 9 MΩ)

V DC (Ri ≥ 9 MΩ)

... 1 MHz 5 V AC

Keying ratio as %

Hz (V AC)

Bandwidth, V AC

A AC / Hz TRMS

A AC+DC TRMS

A DC

Fuse

SECU

LIFE⏐HIT

METRA

X-

TRA/

OUTDOOR

& Filter•& Filter•& Filter

1kHz 1kHz 1kHz

& Filter•& Filter•& Filter

1kHz 1kHz 1kHz

... 100 kHz ... 100 kHz ... 100 kHz ... 100 kHz

15 Hz ... 20 kHz 15 Hz ... 10 kHz 15 Hz ... 10 kHz 15 Hz ... 1 kHz

100 μA

1/10/100 mA

1 A / 10 (16) A

10 A/1000 V 10 A/1000 V 10 A/1000 V —

METRAHIT⏐

HIT

⏐

TECH

•

••••

• ———

10/100 mA

1 A / 10 (16) A

METRAHIT⏐

PRO

1 A / 10 (16) A

METRA

BASE

Function

Transformation factor

A AC / Hz TRMS

A AC+DC TRM

A DC

Hz (A AC)

HIT

⏐

Resistance Ω

Continuity

Diode ... 5,1 V

•

—

Temperature TC (K)

Temperature RTD

Capacitance

MIN/MAX / data hold

4 MBit memory

IR Interface

Power pack adapter socket

Protection

Measuring category

—

For 15,400 measured values, sampling rate adjustable from 0.1 second to 9 hours

SECU

LIFE⏐HIT

METRAHIT⏐

METRA

TRA/

X-

UTDOOR

... 30 kHz ... 30 kHz ... 30 kHz ... 30 kHz

IP52 / IP65 IP52 IP52 IP52

1000 V CAT III

600 V CAT IV

HIT

⏐

ECH

— • — •

—

••••

• ———

••——

••••

• ———

mV/A mA/A

1000 V CAT III

600 V CAT IV

METRAHIT⏐

1000 V CAT III

600 V CAT IV

METRA

HIT

ASE

mV/A

Ri = 1 MΩ

mV/A

Ri = 1 MΩ

mV/A

Ri = 1 MΩ

1000 V CAT III

600 V CAT IV

⏐

—

2 GMC-I Gossen-Metrawatt GmbH

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. Currently up-to-date accessories which are suitable for your measuring instrument are listed at the following web address along with photo, order number, description and, depending upon the scope of the respective accessory, data sheet and operating instructions: www.gossenmetrawatt.com

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 applicable European and national EC directives. This is confirmed by means of the CE mark. A corresponding declaration of conformity can be requested from GMC-I Gossen-Metrawatt GmbH.

The TRMS digital multimeter has been manufactured and tested in accordance with the following safety regulations: IEC 61010–1:2001 / DIN EN 61010–1/VDE 0411–1:2002. When used for its intended purpose (see page 10), safety of the operator, as well as that of the instrument, is assured. Their safety is however not guaranteed, if the instrument is used improperly or handled carelessly.

In order to maintain flawless technical safety conditions, and to assure safe use, it is imperative that you read the operating instructions thoroughly and carefully before placing your instrument into service, and that you follow all instructions contained therein.

The multimeter is equipped with an automatic socket blocking mechanism for your safety, and in order to safeguard your instrument. This mechanism is linked to the rotary switch and only allows access to those jacks which are actually required for the selected function. It also prevents the user from turning the rotary switch to impermissible functions after the measurement cables have already been plugged in.

Measuring Categories and their Significance per IEC 61010-1

CAT Definition

Measurements in electrical circuits

which are not directly connected to the mains:

for example electrical systems in motor vehicles and aircraft, batteries etc.

Measurements in electrical circuits

which are electrically connected to the low-voltage mains:

with plugs, e.g. at home, in the office or laboratory etc.

Measurements in building installations:

III

stationary power consumers, distributor terminals, devices connected permanently to the distributor

Measurements at power sources for low-voltage installations:

meters, mains terminals, primary overvoltage protection devices

The measuring category and the maximum rated voltage which are printed on the device apply to your measuring instrument, for example 1000 V CAT III.

Observe the following safety precautions:

• The multimeter may not be used in potentially explosive

atmospheres.

• The multimeter may only be operated by persons who are ca-

pable of recognizing contact hazards and taking the appropriate safety precautions. Contact hazards according to standard exist anywhere, where voltages of greater than 33 V RMS or 70 V DC may occur. Avoid working alone when taking measurements which involve contact hazards. Be certain that a second person is present.

• 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 I V.

8 GMC-I Gossen-Metrawatt GmbH

Safety Precautions

• 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. no damage to insulation, no interruptions in cables or plugs etc.

• No measurements may be made with this instrument 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.

• Be absolutely certain that the measuring ranges are not overloaded beyond their allowable capacities. Limit values are included in chapter 8, “Technical Data”, in the table entitled “Measuring Functions and Measuring Ranges” in the “Overload Capacity” column.

• The multimeter may only be operated with installed batteries or rechargeable batteries. Dangerous currents and voltages are otherwise not indicated, and the instrument may be damaged.

• The instrument may not be operated if the fuse cover or the battery compartment lid has been removed, or if its housing is open.

• The input for the current measuring range is equipped with a fuse link (exception: METRAHIT⏐B

ASE).

Maximum permissible voltage for the measuring circuit (= rated voltage of the fuse) is 1000 V AC/DC. Use specified fuses only (see page 59)! The fuse must have a

breaking capacity of at least 30 kA.

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.

Defects and Extraordinary Strains

If it may be assumed that the instrument can no longer be operated safely, it must be removed from service and secured against unintentional use. Safe operation can no longer be relied upon:

• If the device demonstrates visible damage

• If the instrument no longer functions, or if malfunctioning occurs

• After long periods of storage under unfavorable conditions, e.g. humidity, dust or extreme temperature (see “Ambient Conditions” on page 60)

GMC-I Gossen-Metrawatt GmbH 9

Safety Precautions

1.1 Use for Intended Purpose

• The respective multimeter is a portable device which can be held in the hand during the performance of measurements.

• Only those types of measurements described in chapter 5 may be performed with the measuring instrument.

• The measuring instrument, including measurement cables and plug-on test probes, may only be utilized within the specified measuring category (see page 59 and the table on page 8 regarding significance).

• Overload limits may not be exceeded. See technical data on page 54 for overload values and overload limits.

• Measurements may only be performed under the specified ambient conditions. See page 60 regarding operating temperature range and relative humidity.

• The measuring instrument may only be used in accordance with the specified degree of protection (IP code) (see page 60).

1.2 Meanings of Danger Symbols

1.3 Meanings of Acoustic Warning Signals

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

Voltage warning: > 1000 V (intermittent acoustic signal)

Current warning: > 10 A (intermittent acoustic signal)

Current warning: > 16 A (continuous acoustic signal)

10 GMC-I Gossen-Metrawatt GmbH

Safety Precautions

GMC-I Gossen-Metrawatt GmbH 11

Operating Overview – Connections, Keys, Rotary Switch, Symbols

→ chapter 7

chapter 3.1

←

→

chapter 4.3

chapter 6←

chapter 3←

chapter 6←

chapter 4.4←

chapter 4.1 ←

Max. 1000 V!

* METRAHIT⏐BASE: Current measurement by means of clip-on current sensor with

voltage output only

→

chapter 4.1.2

→ chapter 3

→ chapter 5

→ chapter 6

→

chapter 1.2

→ chapter 3

→

chapter 4.1

chapter 3

1 Display (LCD) (see page 13 for significance of symbols) 2 MAN / AUTO shift key for manual/automatic measuring range selection

 Increase parameter values

Operating mode menu:

ON / OFF | LIGHT

key for switching device and display illumination on and off

4 FUNC | ENTER multifunction key

Operating mode menu: Acknowledge entry (ENTER)



Increase measuring range or move decimal point to the right (MAN function)

5 6

Rotary switch

for measuring functions, (see page 15 for significance of symbols) 7 DKD calibration mark 8 Connector socket for ground 9 Connector socket for current measurement with automatic blocking

10 Connector socket for voltage, resistance, temperature, diode

capacitance measurement ( METRAHIT⏐TECH

11 DATA / MIN / MAX

Key for freezing, comparing and deleting measured value, and for Min/Max

 Decrease values

Operating mode menu: Select individual menu entries in direction of flow

12 MEASURE | SETUP

Key for switching back and forth between measuring and menu function

13 ZERO | ESC

Key for zero balancing Operating mode menu: Exit current menu level and

14 Decrease measuring range or move decimal point to the left (MAN function) 15 Connector for power pack (METRAHIT⏐X-TRA⏐OUTDOOR only) 16 Infrared interface (METRAHIT⏐X-TRA⏐OUTDOOR only)

Select individual menu entries against direction of flow

METRA

HIT

⏐X-TRA⏐OUTDOOR

and

only) with automatic blocking

return to a higher level, exit parameters configuration without saving data

and

12 GMC-I Gossen-Metrawatt GmbH

Symbols Used in the Digital Display

1 2910

24 23

20 17

Battery level indicator

Battery full

Battery OK

Battery weak

Battery (almost) dead, U < 1.8 V

Interface indicator

METRAHIT⏐X-TRA⏐OUTDOOR:

Active data transmission ↓ to / ↑ from multimeter

IR interface in stand-by mode (ready to receive starting commands)

Operating Overview – Connections, Keys, Rotary Switch, Symbols

1 Battery level indicator

765

12 12

15 16

1921

2 ON: continuous operation (automatic shutdown deactivated) 3 MAN: manual measuring range selection is active 4 Digital display with decimal point and polarity display 5 max/min: Min/Max value storage 6 DATA: display memory, “freeze” measured value 7 STORE: memory mode active, with METRAHIT⏐X-

TRA⏐OUTDOOR only

8 ISO: no function here 9 Transformation factor (current clip factor),

with METRAHIT⏐B

ASE and METRAHIT⏐TECH only

10 IR: infrared interface display, with METRAHIT⏐X-TRA⏐OUTDOOR only 11 Scale for analog display 12 Pointer for analog display (bar graph – pointer)

depending upon setting in SET menu for the A.diSP parameter

Triangle appears: indicates overranging 13 Diode measurement selected 14 Selected type of current 15 TRMS measurement 16 Pt100(0): selected platinum resistance thermometer with

automatic recognition of Pt100/Pt1000,

with METRAHIT⏐X-

TRA⏐OUTDOOR only

17 Type K: temperature measurement with type K (NiCr-Ni) thermocouple 18 sec (seconds): unit of time 19 ΔREL: relative measurement with reference to offset 20 Unit of measure 21 ZERO: zero balancing active

22 Warning regarding dangerous voltage: U > 55 V AC or U > 70 V DC

23 Continuity test with acoustic signal is active 24 h (hours): unit of time

GMC-I Gossen-Metrawatt GmbH 13

Operating Overview – Connections, Keys, Rotary Switch, Symbols

Symbols of Rotary Switch Positions

Switch

V~ 0/4 V~ AC TRMS Alternating voltage, TRMS AC, full bandwidth •••• Hz (V) 1 Hz ~ AC Voltage frequency, full bandwidth •••• V~ 2 V Fil ~ AC TRMS Alternating voltage, TRMS AC, with low-pass (1 kHz) •••—

1kHz

Hz (V) 3 Hz Fil ~ AC Voltage frequency, with low-pass (1 kHz) •••— V~ 1 M V~ 1 V Fil ~ AC TRMS Alternating voltage, TRMS AC, up to 1 kHz, input 1 MΩ•••—

1kHz

Hz (V) 2 Hz Fil ~ AC Voltage frequency, up to 1 kHz, input 1 MΩ•••— Hz (V) 1 M V 0/2 V DC Direct voltage •••• V 1 V DC AC TRMS Pulsating voltage, TRMS ( ) •••• MHz 0/2 MHz (High) frequency @ 5 V~ • ——— % 1 % Keying ratio @ 5 V~ • ———

Tem p TC 0/2 Tem p RTD 1 °C Pt100/1000 Temperature with resistance thermometer Pt100/Pt1000 • ———

A 0/2 A DC Direct current value •••— A 1 A DC AC TRMS Pulsating current value, TRMS AC DC •••— A~ 0/2 A~ AC TRMS Alternating current value, TRMS AC •••— Hz (A) 1 Hz ~ AC Current frequency •••—

Hz ( ) 1 Hz ~ AC Current frequency — • — •

FUNC

Display Measuring Function

1kHz

METRA

X-

TRA/

OUTDOOR

HIT

⏐

METRAHIT⏐

ECH

METRAHIT⏐

ASE

Ω 0/4 V~ AC TRMS Alternating voltage, TRMS AC, full bandwidth, input 1 MΩ•••—

1kHz

Ω 3 Hz ~ AC Voltage frequency, full bandwidth, input 1 MΩ•••—

ACDCVAC

— Ω (Direct current) resistance •••• 0/2 Ω Continuity testing Ω with acoustic signal ••••

V DC Diode voltage ••••

°C Typ-K

Temperature thermocouple Type K ••••

— nF Capacitance ••——

0/2 A DC Direct current value with AC DC clip-on current sensor 1 V:1/10/100/

1 A DC AC TRMS

0/2 A~ AC TRMS

1000 A Pulsating current value, TRMS, with AC DC clip-on current sensor, see above

Alternating current strength, TRMS, with clip-on current sensor, see above

— • — •

— • — • — • — •

14 GMC-I Gossen-Metrawatt GmbH

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)

Symbols on the Device

Warning concerning a point of danger (attention: observe documentation!)

Ground

CAT III / IV Measuring category III or IV device, see also

“Measuring Categories and their Significance per IEC 61010-1” on page 8

Continuous, doubled or reinforced insulation

The approval mark issued by the VDE test authority applies to the following multimeters:

METRAHIT⏐X-

TRA⏐TECH⏐PRO⏐BASE

▲ IR ▼ Position of the infrared interface, window on the top of

the instrument (METRAHIT⏐X-TRA⏐OUTDOOR only)

Position of the power pack connector socket, see also chapter 3.1

5 V / 600 mA

(METRAHIT⏐X-TRA⏐OUTDOOR only)

Fuse for current measuring ranges, see chapter 9.3 (not METRAHIT⏐B

ASE)

The device may not be disposed of with the trash. Further information regarding the WEEE mark can be accessed on the Internet at www.gossenmetrawatt.com under the search term WEEE (see also chapter 9.5).

Calibration seal (red seal):

B0730 DKD-K19701 01-04

Consecutive number German Calibration Service – Calibration Laboratory Registration number Date of calibration (year – month)

see also “Recalibration Service” on page 64

Indicates EC conformity

GMC-I Gossen-Metrawatt GmbH 15

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⏐X-

Installed batteries are disconnected electronically if the NA X-TRA power pack is used, and need not be removed from the instrument. If rechargeable batteries are used, they must be recharged externally. If the external power supply is switched off, the device is automatically switched to battery operation without interruption.

3.2 Activation

Switching the Instrument On Manually

➭ Press the ON / OFF | LIGHT key until the display appears.

Power-up is acknowledged with a brief acoustic signal. As long as the key is held depressed, all of the segments at the liquid crystal display (LCD) are illuminated. The LCD is depicted on page 13. The instrument is ready for use as soon as the key is released.

TRA, not included, see chapter 10.3)

Display Illumination

After the instrument has been switched on, background illumination can be activated by briefly pressing the ON / OFF | LIGHT key. Illumination is switched back off by once again pressing the same key, or automatically after approximately 1 minute.

Switching the Instrument On via PC (METRAHIT⏐X-

The multimeter is switched on after transmission of a data block from the PC, assuming the “irStb ” has been set to “ir on ” (see chapter 6.4).

However, we recommend using the power saving mode: “ir off ”.

Note



Electrical discharge and high frequency interference may cause incorrect displays to appear, and may disable the measuring sequence. Disconnect the device from the measuring circuit. Switch the instrument off and back on again in order to reset. If the problem persists, briefly dislodge the battery from the connector contacts (see also chapter 9.2).

3.3 Setting the Operating Parameters

Setting Time and Date

See the “t iME ” and “dAtE ” parameter in chapter 6.4.

Display Modes for the Analog Display

Selection can be made from two different display modes (see “A.diSP ” parameter in chapter 6.4).

Display Modes for the Digital Display

Selection can be made from two different display modes (see “0.diSP ” parameter in chapter 6.4).

TRA⏐OUTDOOR only)

16 GMC-I Gossen-Metrawatt GmbH

3.4 Switching the Instrument Off

Switching the Instrument Off Manually

➭ Press the ON / OFF | LIGHT key until 0FF appears at the display.

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. 0.8% of the measuring range per minute, or 1 °C or 1 ° F per minute), and if none of the keys or the rotary switch have been activated before a selected period of time in minutes has elapsed (see “APoFF ” parameter on page 49.) Shutdown is acknowledged with a brief acoustic signal. Exceptions include: Transmission and memory mode operation, continuous operation and whenever a dangerous voltage is applied to the input (U > 55 V AC or U > 70 V DC).

Disabling Automatic Shutdown

The instrument can be set to continuous operation.

➭ Simultaneously press the and keys to

this end.

The “Continuous On” function is indicated at by means of the

ON display to the right of the battery symbol.

The “Continuous On” setting can only be cancelled by changing the respective parameter, and not by switching the instrument off (see “APoFF ” on page 49).

ON / OFF

LIGHT

FUNC

ENTER

Initial Start-Up – Setup

ON / OFF

LIGHT

ON / OFF

LIGHT

ON / OFF

LIGHT

ON / OFF

LIGHT

Long (1 s)

8.8.8.8.8

Auto-Range

000.00

Illumination On

000.00

Illumination Off

0ff

GMC-I Gossen-Metrawatt GmbH 17

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. The socket blocking mechanism prevents the user from inadvertently turning the selector switch to impermissible functions after the measurement cables have been plugged in to the instrument.

4.1.1 Automatic Range Selection

The multimeter is equipped with auto-ranging for all measuring functions, except for temperature measurement, diode and continuity testing, and the MHz measuring function. Auto-ranging is active as soon as the instrument is switched on. The instrument automatically selects the measuring range which allows for highest possible resolution of the applied quantity. When the instrument is switched to frequency measurement, the previously selected voltage measuring range remains active.

The Auto-Ranging Function

The multimeter is switched automatically to the next higher range at ±(11999 d + 1 d → 01200 d), and to the next lower range at ±(01100 d - 1 d → 10990 d).

Exception, capacitance measurement:

The multimeter is switched automatically to the next higher range at ±(1199 d + 1 d → 0120 d), and to the next lower range at ±(0110 d - 1 d → 1099 d).

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

 scroll key.

 or

The instrument is automatically returned to range selection when the MAN / AUTO key is pressed, the rotary switch is activated or the instrument is switched off and back on again.

Overview: Auto-Ranging and Manual Range Selection

Function Display

MAN / AUTO

Range switching sequence for:

V: 100 mV* Hz: 100 Hz

Ω: 100 Ω

10 MΩ ↔ 40 MΩ

A: METRAHIT⏐X-

↔

 or 

MAN / AUTO

* Via manual measuring range selection only

100 mA ↔ 1 A ↔ 10 A (16 A)

METRAHIT⏐T

10 mA

METRAHIT⏐P

A:METRAHIT⏐B

see chapter 5.7.3 ff

F: METRAHIT⏐X-

10 nF ↔ 100 nF ↔ 1 μF ↔ 10 μF ↔ 100 μF ↔ 1000 μF

Return to automatic measuring range selection —

Manual mode active:

utilized measuring range is fixed

↔

1 V ↔ 10 V ↔ 100 V ↔ 1000 V

↔

1 kHz ↔ 10 kHz ↔ 100 kHz

↔

1 kΩ ↔ 10 kΩ ↔ 100 kΩ ↔1 MΩ

TRA⏐OUTDOOR:

ECH:

↔

100 mA ↔ 1 A ↔ 10 A (16 A)

RO: 1A

↔

10 A (16 A)

ASE and METRAHIT⏐TECH:

TRA⏐OUTDOOR and METRAHIT⏐TECH:

↔

100 μA ↔ 1 mA ↔ 10 mA

MAN

18 GMC-I Gossen-Metrawatt GmbH

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).

•With the DATA function (see chapter 4.4). In this way, the appropriate measuring range is selected automatically after the first measurement and the second measurement is executed more quickly.

The selected measuring range remains active for the subsequent series of measurements with these two functions.

4.2 Zero Offset / Relative Measurements

Depending upon deviation from the zero point, zero balancing or a reference value for relative measurements can be stored to memory:

Deviation from zero – With short-circuited measurement cables for V, Ω, A – With open input for capacitance unit of measure F

0 to 200 digits ZERO ΔREL

> 200 to 5000 digits ΔREL

The applicable reference or correction value is deducted individually for the respective measuring function as an offset from all subsequent measurements, and remains in memory until deleted, or until the multimeter is switched off.

Display

Zero balancing and reference value adjustment can be used for auto-ranging, as well as for manual measuring range selection.

Zero Balancing

➭ Plug the measurement cables into the instrument and connect

the free ends to each other, except for capacitance measurement in which case the ends of the cables are not connected to each other.

➭ Briefly press the ZERO | ESC key.

The instrument acknowledges zero balancing with an acoustic signal, and the “ZERO ΔREL” symbol appears at the LCD. The value measured at the moment the key is pressed serves as a reference value.

➭ Zero balancing can be cleared by once again pressing the

ZERO | ESC key.

Note



Setting the Reference Value

➭ Plug the measuring cables into the instrument and measure a

As a result of TRMS measurement, the multimeter displays a residual value of 1 to 30 digits with short-circuited measurement cables as the zero point for V AC / I AC or V(AC+DC) / I (AC+DC) measurements (non-linearity of the TRMS converter). This has no influence on specified accuracy above 2% of the measuring range (or 3% in the mV range).

reference value (max. 5000 digits).

GMC-I Gossen-Metrawatt GmbH 19

Control Functions

➭ Briefly press the ZERO | ESC key.

The instrument acknowledges storage of the reference value with an acoustic signal, and the “ZERO ΔREL” or the “ΔREL” 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. The analog display continues to read out the original measured value.

• In the case of relative measurement, Ω / F or AC quantities may also appear as negative values.

4.3 Display (LCD)

4.3.1 Digital Display

Measured Value, Unit of Measure, Type of Current, Polarity

4.3.2 Analog Display

Measured Value, Polarity

The analog display demonstrates the dynamic performance of a moving-coil mechanism. This display is especially advantageous for observing measured value fluctuation, and for balancing procedures.

Two different display modes can be selected in the “SET ” menu with the help of the “A.diSP ” parameter (see chapter 6.4):

• Bar graph

• Pointer: The current measured value is tracked in real-time. The analog scale displays a negative range of 2 scale divisions for

the measurement of zero-frequency quantities, allowing for precise observation of measured value fluctuation around zero. If the measured value exceeds the negative range of 2 scale divisions, polarity is reversed at the analog display.

Scaling of the analog scale is automatic. This is very helpful for

manual measuring range selection. The measured value with decimal and plus or minus sign appears at the digital display. The selected unit of measure and type of current are displayed as well. A minus sign appears to the left of the value during measurement of zero-frequency quantities, if the plus pole of the measured quantity is applied to the “⊥” input.

Overranging

Overranging in the positive range is displayed by means of the

right triangle symbol. The “0.diSP ” parameter can be used to determine whether lead-

ing zeros will be appear or be suppressed at the measured value display (see chapter 6.4).

Overranging

Refresh Rate

In the bar graph and pointer modes, the analog display is

refreshed 40 times per second. If the upper range limit of 12,000 digits is exceeded “0L” (overload) appears at the display. Exceptions: “0L” appears as of 1200 digits for capacitance measurement, and as of 5100 digits for diode testing.

20 GMC-I Gossen-Metrawatt GmbH

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. After the measuring signal has been applied and the measured value has settled in in accordance with the “condition” listed in the table below, the measured value is frozen at the digital display and an acoustic signal is generated. The test probes can now be removed from the measuring points, and the measured value can be read from the digital display. If the measuring signal falls below the value specified in the table, the function is reactivated for storage of the next value.

Measured Value Comparison (DATA Compare)

If the currently frozen value deviates from the first saved value by less than 100 digits, the acoustic signal is generated twice. If deviation is greater than 100 digits, only a brief acoustic signal is generated.

Note



The DATA function has no effect on the analog display, at which the current measured value continues to appear. However, when the digital display if “frozen”, the decimal point is fixed as well (fixed measuring range, symbol: MAN). The selected measuring range should not be manually changed as long as the DATA function is active.

The DATA function is deactivated by pressing and holding the DATA/MIN/MAX key (for approx. 1 second), when the measuring function is changed or when the instrument is switched off and back on again.

V, A, Hz

F, MHz, %

of measuring range

100%

10%

Activated

DATA

Function

Activate Brief blinks Once

Save (stabilized measured

value)

Reactivate

Change to

Min/Max

Exit Long

Reactivation results from falling short of specified measured value limits.

Two acoustic signals are generated the first time a measured value is saved as a reference value. For subsequent data hold, two acoustic signals are only generated if the currently frozen value deviates from the first saved value by less than 100 digits.

Key: MV = measured value, R = measuring range

Save

Press

DATA /

Min/Max

Brief See table in chapter 4.4.1

Reactivated

Measuring

Function

V, A, F, Hz,

MHz, %

V, A, F, Hz,

MHz, %

10,000 digits

t [s]

Save

Condition Response from Instrument

Display

DATA

Static

Blinks

Digital

Is displayed

Stored

Is cleared Is cleared

Measuring

Signal

> 10%

of R

≠ 0L

< 10%

of R

= 0L

Acoustic

Once

Twi ce

GMC-I Gossen-Metrawatt GmbH 21

Control Functions

Example

The voltage measuring range is set manually to 10 V. The first measured value is 5 V, which is stored to memory because it is greater than 10% of the measuring range (= 1 V), and is thus reliably above the background noise level. As soon as the measured values 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.

4.4.1 Saving Minimum and Maximum Values – MIN/MAX Function

Minimum and maximum measured values applied to the measuring instrument’s input after the Min/Max function has been activated can be “frozen” at the display. The most important use of this function is the determination of minimum and maximum values during long-term measured value observation.

The Min/Max function can be activated in all measuring functions. The Min/Max function has no effect on the analog display, at

which the momentary measured value continues to appear. Apply the measured quantity to the instrument and set the

measuring range with the MAN / AUTO key before activating the Min/Max function.

The Min/Max function is deactivated by pressing and holding the DATA/MIN/MAX key (for approx. 1 second), when the measuring function is changed or when the instrument is switched off and back on again.

Min/Max Function

Activate

and save

Save and

display

Return to 1

Stop Long Are deleted

Press

DATA /

Min/Max

2 x brief are saved

Brief

Min. and Max.

Measured Values

Storage continues in

background,

new min. and max.

values are displayed.

Same as 1,

stored values are not

deleted

Response from Instrument

Display

Measured Value

Digital

Momentary

measured

value

Saved min.

value

Saved max.

value

Same as 1

Momentary

measured

value

Acoustic

Max.

Signal

Min.

Max

and

min.

Min. 1 x

Max. 1 x

Same

as 1

de-

leted

2 x

1 x

2 x

Note



As opposed to the DATA function, the Min/Max function can also be used for temperature measurement.

22 GMC-I Gossen-Metrawatt GmbH

Control Functions

4.5 Measurement Data Recording (METRAHIT⏐X-TRA⏐OUTDOOR only)

The METRAHIT⏐X-

TRA⏐OUTDOOR is capable of recording measure-

ment 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. The only prerequisite is a PC which is connected by means of an interface cable to the USB X-TRA bi-directional interface adapter, which is in turn plugged onto the METRAHIT⏐X-

TRA⏐OUTDOOR. See also chapter 7.

Memory Parameters Overview (METRAHIT⏐X-TRA⏐OUTDOOR only)

Parameter Page: header

CLEAr EMpty 0CCvP rAtE StArt StoP

24: Clear Memory 24: Clear Memory – appears after CLEAr

24: Querying Memory Occupancy 48: rAtE – set the sampling rate (METRAHIT⏐X-TRA⏐OUTDOOR only)

23: Starting Recording via Menu Functions

24: Ending Recording

The STORE Menu Function

➭ First set the sampling rate for memory mode operation (see rAtE

parameter in chapter 6.4) , and then start memory mode operation.

➭ First select the desired measuring function and an appropriate

measuring range.

➭ Check the battery charge level before starting long-term

measurement recordings (see chapter 6.3). Connect the NA X-TRA power pack if required.

Starting Recording via Menu Functions

➭ Switch to the “SET ” mode by pressing MEASURE | SETUP and se-

lect the “StorE ” menu.

MEASURE

SETUP

1nFo

 ...  StorE 000.0%  StArt

FUNC

ENTER

FUNC

ENTER

➭ Memory mode operation is started by pressing FUNC | ENTER.

STORE appears underneath the analog display and indicates

that memory mode operation has been activated. “StoP ” appears at the digital display.

➭ Press MEASURE | SETUP in order to return to the measuring

function.

GMC-I Gossen-Metrawatt GmbH 23

Control Functions

During Recording

STORE is displayed underneath the analog display during memory

mode operation, and

 000.3%

StoP

memory occupancy

can be controlled:

The following message appears as soon as memory is full: “100.0%”.

In order to be able to observe measured values during recording, switch to the measuring function by pressing MEASURE | SETUP. The display is returned to the memory menu after once again pressing MEASURE | SETUP.

A new memory block is created when another measuring function is selected with the rotary switch or the FUNC | ENTER key. Data storage then continues automatically.

Ending Recording

➭ “StoP ” appears at the display after pressing MEASURE | SETUP.

StoP start

FUNC

ENTER

➭ Acknowledge the “StoP ” display by pressing FUNC | ENTER.

STORE is cleared from the display, indicating that recording has

been ended.

➭ Press MEASURE | SETUP in order to return to the measuring

function.

➭ Memory mode operation can also be exited by switching the

multimeter off.

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%.

MEASURE

SETUP

1nFo

FUNC

ENTER

bAtt: 

... 

0CCvP

017.4

Memory occupancy can be queried before recording is started via the “StorE” menu.

MEASURE

SETUP

 ...  StorE 017.4 %  StArt

1nFo

FUNC

ENTER

Clear Memory

This function deletes all measured values from memory! This function cannot be executed during memory mode

operation.

MEASURE

SETUP

 CLEAr empty

 ...  StorE 017.4 % w StArt

1nFo

FUNC

ENTER

FUNC

ENTER

24 GMC-I Gossen-Metrawatt GmbH

Control Functions

GMC-I Gossen-Metrawatt GmbH 25

V/Hz, Ω, Temperature, and A/Hz Measurements

5 Measurements

5.1 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. The test probes may only be only gripped up to the finger

Do not touch the metallic test probes under any

guard. circumstances.

• Avoid working alone when taking measurements which involve contact hazards. Be certain that a second person is present.

• Maximum permissible voltage between the connector sockets, (9 and 10) and ground (8) is 1000 V for measuring category II I, and 600 V for measuring category IV.

• Be prepared for the occurrence of unexpected voltages at devices under test (e.g. defective devices). For example, capacitors may be dangerously charged.

• No measurements may be made with this instrument 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.

• Be aware of the fact that dangerous voltage spikes are not displayed during measurement with the low-pass filter. We recommend measuring voltage without the low-pass filter first, in order to be able to detect any dangerous voltages.

Scope of Functions, Voltage Measurement

Function

V AC / Hz TRMS (Ri ≥ 9 MΩ)

V AC / LP filter 1 kHz (Ri = 1 MΩ2)) TRMS

V AC+DC TRMS (Ri ≥ 9 MΩ)

V DC (Ri ≥ 9 MΩ)

MHz at 5 V AC

Keying ratio as %

Freq. response, V AC

A 1 kHz low-pass filter can be used in this case, in order to filter out high frequency pulses of greater than 1 kHz, for example when performing measurements at pulsed motor drives.

Input resistance of approx. 1 MΩ. Erroneous displays resulting from capacitive coupling during voltage measurement in power supply systems are reduced to a minimum in this way.

METRA

HIT

⏐

X-TRA/

OUTDOOR

20 kHz 10 kHz 10 kHz 1 kHz

METRAHIT⏐

TECH

••••

•••—

••••

• ———

METRAHIT⏐

PRO

METRA

BASE

HIT

⏐

26 GMC-I Gossen-Metrawatt GmbH

5.1.1 Direct and Pulsating Voltage Measurement, V DC and V (DC+AC)

Note



Only to observe for METRAHIT⏐TECH: Set the CL iP parameter to 0FF in the current clip 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 clip-on current sensor.

MEASURE

SETUP

FUNC

ENTER

➭ In accordance with the voltage to be measured, turn the rotary

switch to V or V .

➭ Connect the measurement cables as shown.

The “⊥” connector jack should be grounded.

Note



An intermittent acoustic signal warns the operator if the measured value exceeds the upper range limit in the 1000 V range.

Make sure that a current measuring range (“A”) has not been activated when the multimeter is connected for voltage measurement! If the fuse’s blowing limits are exceeded as a result of operator error, both the operator and the instrument are in danger!

With the rotary switch in the V position, the multimeter is always set to the 1 V measuring range immediately after it is switched on. As soon a the MAN / AUTO key is pressed, and assuming the measured value is less than 90 mV, the multimeter is switched to the mV measuring range.

 ...  SET rAtE  ...  CL IP

1nFo

1 / 10/100/1000 / 0ff

FUNC

ENTER



FUNC

ENTER

V/Hz, Ω, Temperature, and A/Hz Measurements

020.00

FUNC

ENTER

020.00

Tem p

Warnings regarding dangerous voltage:

> 55 V AC or > 70 V DC:

> 1000 V:

COM

– (+)

+ (–)

230.0

Measuring Ranges: V= : 100 mV…1000 V

V: 100 mV…1000 V Max. 1000 V (< 10 kHz) Max. 100 V (> 10 kHz) Hz: 1Hz … 100 kHz

max

TRMS

= 3 x 106 V x Hz

for U > 100 V

GMC-I Gossen-Metrawatt GmbH 27

V/Hz, Ω, Temperature, and A/Hz Measurements

5.1.2 Alternating Voltage Measurement with 1 MΩ Load Resistance

and Frequency Measurement with Selectable Low-Pass Filter (METRAHIT⏐X-TRA⏐OUTDOOR⏐TECH⏐PRO only)

The measuring instrument includes a V electricians with an input resistance of approximately 1 MΩ. Erroneous displays resulting from capacitive coupling during voltage measurement in power supply systems are reduced to a minimum in this way.

Note



METRAHIT⏐TECH: see note in chapter 5.1.1.

➭ In accordance with the voltage to be measured, turn the rotary

switch to V~

➭ Connect the measurement cables as shown.

The “⊥” connector jack should be grounded.

Voltage Measurement

Note



An intermittent acoustic signal warns the operator if the measured value exceeds the upper range limit in the 1000 V range.

➭ You can switch back and forth between voltage measurement

with and without low-pass filter.

➭ Press the FUNC | ENTER multifunction key repeatedly until unit of

measure V or V/Fil appears at the display.

or .

1MΩ

1 kHz

switch position for

1MΩ

Frequency Measurement

➭ Apply the measured quantity is the same way as for voltage

measurement.

➭ Manually select the measuring range for the voltage amplitude.

When the instrument is switched to frequency measurement, the previously selected voltage measuring range remains active.

➭ You can switch back and forth between frequency

measurement with and without low-pass filter. Press the FUNC | ENTER multifunction key repeatedly until unit of measure Hz or Hz/Fil appears at the display. Lowest measurable frequencies and maximum allowable voltages are included in chapter 8, “Technical Data”.

Measurement with Low-Pass Filter

Attention!

Be aware of the fact that dangerous voltage spikes are not displayed during this type of measurement (see also “Voltage Comparator”. We recommend measuring voltage without the low-pass filter first, in order to be able to detect any dangerous voltages.

A 1 kHz low-pass filter can be activated if required, in order to filter out high frequency pulses of greater than 1 kHz, for example when performing measurements at pulsed motor drives, i.e. undesired voltages of greater than 1 kHz can be suppressed.

The active low-pass filter is indicated by the Fil display. The multimeter is automatically switched to manual measuring range selection.

28 GMC-I Gossen-Metrawatt GmbH

V/Hz, Ω, Temperature, and A/Hz Measurements

V Tem p

COM

Warnings regarding dangerous voltage:

> 55 V AC or > 70 V DC:

> 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. At voltages of greater than 55 V AC or 70 V DC, a danger symbol appears at the display: .

230.0

Measuring Ranges: V~: 100 mV…1000 V

Max. 1000 V (< 10 kHz) Max. 100 V (> 10 kHz) Hz: 1Hz … 100 kHz

= 3 x 106 V x Hz

max

for U > 100 V

1MΩ

1 kHz

V~ with Filter

Hz with Filter

0225.6

0226.0

050.00

049.99

FUNC

ENTER

FUNC

ENTER

FUNC

ENTER

FUNC

ENTER

Fil

AC TRMS

1 kHz

GMC-I Gossen-Metrawatt GmbH 29

V/Hz, Ω, Temperature, and A/Hz Measurements

5.1.3 Alternating Voltage and Frequency Measurement V AC and Hz with Selectable Low-Pass Filter (METRAHIT⏐X-TRA⏐OUTDOOR⏐TECH⏐PRO only)

Note



METRAHIT⏐TECH: 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.

Voltage Measurement

Note



An intermittent acoustic signal warns the operator if the measured value exceeds the upper range limit in the 1000 V range.

➭ You can switch back and forth between voltage measurement

with and without low-pass filter.

➭ Press the FUNC | ENTER multifunction key repeatedly until unit of

measure V or V/Fil appears at the display.

30 GMC-I Gossen-Metrawatt GmbH

Frequency Measurement

➭ Apply the measured quantity is the same way as for voltage

measurement.

➭ Manually select the measuring range for the voltage amplitude.

When the instrument is switched to frequency measurement, the previously selected voltage measuring range remains active.

➭ You can switch back and forth between frequency

Measurement with Low-Pass Filter

Attention!

The active low-pass filter is indicated by the Fil display. The multimeter is automatically switched to manual measuring range selection.

The specified measuring accuracy is not achieved when the filter is activated and signals are greater than 100 Hz.

V/Hz, Ω, Temperature, and A/Hz Measurements

V Tem p

COM

Warnings regarding dangerous voltage:

> 55 V AC or > 70 V DC:

> 1000 V:

Voltage Comparator for Displaying Dangerous Voltage

230.0

Measuring Ranges: V~: 100 mV…1000 V

Max. 1000 V (< 10 kHz) Max. 100 V (> 10 kHz) Hz: 1Hz … 100 kHz

= 3 x 106 V x Hz

max

for U > 100 V

V~ with Filter

Hz with Filter

0230.6

050.03

0229.6

050.00

FUNC

ENTER

FUNC

ENTER

FUNC

ENTER

FUNC

ENTER

Fil

TRMS

1 kHz

GMC-I Gossen-Metrawatt GmbH 31

V/Hz, Ω, Temperature, and A/Hz Measurements

5.1.4 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. If longer pulse durations are expected, for example when conducting measurements at transformers or motors, we recommend the use of our KS30 measuring adapter. It provides protection against transient overvoltages of up to 6 kV with wave-front durations of 10, and halftimes of 1000 μs. Continuous load capacity is 1200 V

. Additional influence error

RMS

caused by the KS30 measuring adapter amounts to approximately -2%.

5.1.5 Voltage Measurements at Above 1000 V

Voltages of greater than 1000 V can be measured with a high-voltage probe, e.g. the HV31) or the HV302) from GMC-I Gossen-Metrawatt GmbH. It is absolutely essential to earth the ground terminal in this case. Observe all applicable safety precautions!

Voltage Measurements at Above 1000 V with the HV3 High-Voltage Probe

Tem p

Red

HV3: 3 kV

HV30: 30 kV, for (DC) voltages only

Black

COM

Black

x1000

x100

32 GMC-I Gossen-Metrawatt GmbH

5.1.6 Frequency and Keying Ratio Measurements

(METRAHIT⏐X-

➭ 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 keying ratio measurement!

Attention!

The applied signal voltage may not exceed 5 V.

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. Pulse frequency demonstrates the reciprocal value of pulse period.

Keying Ratio Measurement, t

The ratio of pulse duration to pulse period is measured with periodic square-wave signals and displayed as a percentage.

keying ratio (%) =

TRA⏐OUTDOOR only)

E/tP

pulse duration (tE) pulse period (t

• 100

)

V/Hz, Ω, Temperature, and A/Hz Measurements

MHz

Pulse Time Quantities

E/tP

pulse frequency = 1/tP

pulse duration pulse period – tEinterpulse period

pulse or keying ratio

Tem p

MHz

1.0323

MHz

FUNC

ENTER

002.00

Measuring Ranges:

MHz tE/t

100 Hz ... 1 kHz 2 ... 98%

... 10 kHz 5 ... 95%

... 100 kHz 10 ... 90%

COM

tE/t

Note



The applied frequency must remain constant during keying ratio measurement.

GMC-I Gossen-Metrawatt GmbH 33

Max. 5 V

V/Hz, Ω, Temperature, and A/Hz Measurements

5.2 Resistance Measurement, Ω

➭ 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 “Ω”.

➭ Connect the device under test as shown.

000.00

Measuring Ranges:

100 Ω … 40 MΩ

Note



Use short or shielded measurement cables in the case of high-impedance resistance.

Improving Accuracy by means of Zero Balancing

Cable resistance and contact resistance can be eliminated in all measuring ranges by means of zero balancing (see chapter 4.2).

34 GMC-I Gossen-Metrawatt GmbH

0V !

V Tem p

COM

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.

Depending upon the selected limit value, the multimeter generates a continuous acoustic signal in the case of continuity or short-circuit, i.e. at a value of less than the selected limit value.

“0L” appears at the display in the case of an open connection. The limit value can be adjusted in the “SETUP” menu (see also

chapter 6.4):

MEASURE

SETUP

FUNC

ENTER

(10 = default setting)

 ...  SET rAtE  ...  bEEP

1nFo

1, 10, 20, 30, 40, 90 Ω

FUNC

ENTER

FUNC



ENTER

V/Hz, Ω, Temperature, and A/Hz Measurements

000.8

FUNC

ENTER

0.443

0V !

Tem p

COM

R < 1, 10, 20, 30, 40, 90 Ω

GMC-I Gossen-Metrawatt GmbH 35

V/Hz, Ω, 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

➭ Connect the device under test as shown.

Conducting Direction and Short-Circuit

The instrument displays forward voltage in volts (display: 4 places). As long as voltage drop does not exceed the maximum display value of 5.1 V, several series connected components or reference diodes can be tested with a small reference voltage and reference diodes.

FUNC

| ENTER

key.

0V !

000.8

FUNC

ENTER

0.443

V Tem p

COM

Reverse Direction and Interruption

The measuring instrument indicates overload 0L.

Measuring Range:

to 5.100 V

–

0.654

Note



Resistors and semiconductor paths connected in parallel to the diode distort measurement results!

Forward Direction Reverse Direction

36 GMC-I Gossen-Metrawatt GmbH

0.L

V/Hz, Ω, Temperature, and A/Hz Measurements

5.5 Temperature Measurement

Temperature measurement is performed with a type K thermocouple (accessory, not included), which is connected to the voltage input. Alternatively, a Pt100 or Pt1000 resistance thermometer can be used with the METRAHIT⏐X-TRA⏐OUTDOOR .

Selecting the Unit of Measure for Temperature

MEASURE

SETUP

(°C = default setting)

5.5.1 Measurement with Thermocouples, Temp TC

➭ Set the rotary switch to “Temp

Note



METRAHIT⏐X-TRA⏐OUTDOOR only: 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 if required.

➭ The reference temperature is measured at the internal

reference junction (see parameter “1tEMP ” in chapter 6.3 regarding querying).

 ...  tEMP °C / °F 

1nFo

FUNC

ENTER

”.

FUNC

ENTER

Note



The internal reference temperature (temperature of the internal reference junction) is measured by a temperature sensor inside of the instrument. This may be somewhat above room temperature as a result of internal heat-up, or moving from warmer to colder surroundings or vice versa.

➭ Connect the sensor to the two accessible jacks. The instru-

ment displays the measured temperature using the selected unit of measure.

Tem p

0023.3

°Χ

FUNC

ENTER

Typ e K

V Tem p

Tem p

RTD

COM

RTD

TE (TC)

0256.0

Measuring Range

TE (TC) K (NiCr-Ni) –250.0 … +1372.0 °C

°Χ

Pt1000

GMC-I Gossen-Metrawatt GmbH 37

V/Hz, Ω, Temperature, and A/Hz Measurements

5.5.2 Measurement with Resistance Thermometers (METRA

HIT⏐X-

TRA

⏐

UTDOOR

only)

➭ Set the rotary switch to “TempTC” or “Temp

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.

There are two different ways to compensate for cable resistance:

Automatic Compensation

➭ Press the ZERO | ESC key.

“Short leads” appears at the display.

If you prefer to enter cable resistance directly, you can skip the following entry prompt.

➭ Short circuit the measuring instrument’s connector cables.

“000.00 ” appears at the display. After pressing the FUNC | ENTER key, automatic compensation of cable resistance is activated for all subsequent measurements. The short-circuit can now be eliminated, and the device is ready for use.

Entering Cable Resistance

➭ Press the ZERO | ESC key once again in the automatic

compensation menu.

➭ Enter the known resistance of the connector cables with the

scroll keys: Select the digit to be changes with the   keys, and change the respectively selected digit with the The default value is 0.1 Ω. Values can be selected within a range of 0 to 50 Ω.

RTD

”.

 keys.

➭

Upon pressing the and the display is returned to the measuring function. Cable resistance remains in memory even after the instrument has been switched off.

FUNC | ENTER

Temp

key, the selected value is activated

Tem p

RTD

Measuring Ranges

RTD Pt100 – 200.0 … +850.0 °C RTD Pt1000 –150.0 … +850.0 °C

Short Leads

Automatic

Compensation

V Tem p

COM

RTD

0023.3

0025.6

FUNC

ENTER

000.00

000.50

Enter Cable Resistance

FUNC

ENTER

R L

ZERO

R L

ESC

°Χ

Typ e K

RTD

Pt1000

ZERO

ESC

FUNC

ENTER

38 GMC-I Gossen-Metrawatt GmbH

5.6 Capacitance Measurement

(METRAHIT⏐X-

➭ 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.

Capacitors must always be discharged before measurement is performed. 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 (discharged!) device under test to the sockets

with the measurement cables as shown.

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!

TRA⏐OUTDOOR and METRAHIT⏐TECH only)

V/Hz, Ω, Temperature, and A/Hz Measurements

10.38

0V !

Tem p

–

Measuring Ranges:

10 nF ... 1000 μF

COM

–

GMC-I Gossen-Metrawatt GmbH 39

V/Hz, Ω, Temperature, and A/Hz Measurements

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.

• An intermittent acoustic signal warns of current greater than

10 A. An continuous acoustic signal warns of current greater than 16 A.

• The input for the current measuring range is equipped with a

fuse link. Maximum permissible voltage for the measuring circuit (= rated voltage of the fuse) is 1000 V AC/DC. Use specified fuses only! The fuse must have a breaking capacity of at least 30 kA.

• If the fuse for the active current measuring range blows, “FUSE ”

appears at the digital display, and an acoustic signal is generated at the same time.

• If a fuse should blow, eliminate the cause of overload before

placing the instrument back into service!

• Fuse replacement is described in chapter 9.3.

• Be absolutely certain that the measuring ranges are not

overloaded beyond their allowable capacities. Limit values are included in chapter 8, “Technical Data”, in the table entitled “Measuring Functions and Measuring Ranges” in the “Overload Capacity” column.

Scope of Functions, Current Measurement, Direct Connection

Function METRAHIT⏐

A AC / Hz ~ 100 μA

A AC+DC TRMS

A DC 100 μA

1000 V fuse

TRA /

X-

UTDOOR

1/10/100 mA

1 A / 10 (16) A

100 μA

1/10/100 mA

1A / 10 (16) A

1/10/100 mA

1A / 10 (16) A

METRAHIT⏐

ECH

10/100 mA

1 A / 10 (16) A

10/100 mA

1A / 10 (16) A

10/100 mA

1A / 10 (16) A

•••—

METRAHIT⏐

1 A / 10 (16) A

METRAHIT⏐

ASE

—

Scope of Functions, Current Measurement via Clip-On Current Sensor

Function METRAHIT⏐

Transformation Factor

A AC / Hz

A AC+DC

A DC

Hz (A AC)

X-

TRA /

OUTDOOR

... 30 kHz ... 30 kHz ... 30 kHz ... 30 kHz

METRAHIT⏐

ECH

— • — •

— • — • — • — • — • — •

METRAHIT⏐

ASE

40 GMC-I Gossen-Metrawatt GmbH

5.7.1 Direct and Pulsating Current Measurement, Direct Connection,

A DC and A (DC+AC) (METRAHIT⏐X-

➭ 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. Each time the key is pressed, the instrument is switched back and forth between A DC and A (DC + AC) by means of an acoustic signal. The current type is indicated at the LCD by means of the DC or the (DC+AC)

➭ Safely connect the measuring instrument (without contact

resistance) in series to the power consumer (2) as shown.

➭ Switch supply power to the measuring circuit back on (3).

➭ Read the display. Make a note of the measured value if the

instrument is not being operated in the memory mode or the transmission mode.

➭ Disconnect supply power from the measuring circuit or the

power consumer (1) once again, and discharge any capacitors.

➭ Remove the test probes from the measuring point and return

the measuring circuit to its normal condition.

TRA⏐OUTDOOR⏐TECH⏐PRO only)

TRMS

, which is indicated

symbol.

TRMS

V/Hz, Ω, Temperature, and A/Hz Measurements

Current measurement

may only be performed with installed batteries!

8.8.8.8.8

Measuring Ranges: METRAHIT⏐PRO

1 A / 10 A (16 A max. 30 s)

METRAHIT⏐TECH

10 mA / 100 mA 1 A / 10 A (16 A max. 30 s)

METRAHIT⏐X-TRA/OUTDOOR

100 μA / 1 mA 10 mA / 100 mA 1 A / 10 A (16 A max. 30 s)

003.50

Tem p

FUNC

ENTER

COM mA A

AC TRMS

I > 10 A

I > 16 A

GMC-I Gossen-Metrawatt GmbH 41

Current

V/Hz, Ω, Temperature, and A/Hz Measurements

5.7.2 Alternating Current and Frequency Measurement, Direct Connection, A AC and Hz (METRAHIT⏐X-TRA⏐OUTDOOR⏐TECH⏐PRO 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. Each time the key is pressed, AC switching is acknowledged with an acoustic signal.

➭ Safely connect the measuring instrument (without contact

resistance) in series to the power consumer as shown.

➭ Switch supply power to the measuring circuit back on (3).

➭ Read the display. Make a note of the measured value if the

instrument is not being operated in the memory mode or the transmission mode.

➭ Disconnect supply power from the measuring circuit or the

power consumer (1) once again, and discharge any capacitors.

➭ Remove the test probes from the measuring point and return

the measuring circuit to its normal condition.

and Hz are alternately selected, and

TRMS

Current measurement

may only be performed with installed batteries!

8.8.8.8.8

Measuring Ranges: METRAHIT⏐PRO

1 A / 10 A (16 A max. 30 s)

METRAHIT⏐T

10 mA / 100 mA 1 A / 10 A (16 A max. 30 s)

METRAHIT⏐X-TRA/OUTDOOR

100 μA / 1 mA 10 mA / 100 mA 1 A / 10 A (16 A max. 30 s)

ECH

003.50

050.10

Tem p

FUNC

ENTER

COM mA A

TRMS

I > 10 A

I > 16 A

42 GMC-I Gossen-Metrawatt GmbH

Current

5.7.3 Direct and Pulsating Current Measurement with Clip-On Current Sen-

sor, A DC and A (DC+AC) (METRA

HIT⏐T

ECH

and METRA

HIT⏐B

ASE

only)

Transformer Output, Voltage/Current

When a clip-on current sensor is connected to the multimeter (METRAHIT⏐T

ECH: V input, METRAHIT⏐BASE: V input), all current

displays appear with the correct value in accordance with the selected transformation factor.

The only prerequisite is that the current sensor is equipped with at least one of the below listed transformation factors, and that the factor has been previously selected in the following

Cl ip ≠

0FF

menu (

), see also chapter 6.4.

Current Clip Setup Menu

MEASURE

SETUP

FUNC

ENTER

1nFo

 ...  SET rAtE  ...  CLIP

1 / 10/100/1000 / 0ff 

FUNC

ENTER

FUNC

ENTER

V/Hz, Ω, Temperature, and A/Hz Measurements

METRAHIT⏐BASE

003.50

METRAHIT⏐TECH

FUNC

ENTER

003.50

1:1000

TRMS

Trans. Factors

CL IP

1:1

1 mV / 1 mA

1:10

1m V / 10 mA

1:100

1m V / 100 mA

1:1000

1 mV / 1 A

Measuring Ranges DMM Clip Types

100 mV 1 V 10 V

100.00 mA 1.0000 A 10.000 A WZ12C

1.0000 A 10.000 A 100.00 A WZ12B, Z201A

10.000 A 100.00 A 1000.0 A Z202A

100.00 A 1000.0 A (10000.0 A)

Z202A, Z203A, WZ12C

METRAHIT⏐TECH

V Tem p

COM

Ri = 9 M

METRAHIT⏐BASE

V Tem p

COM

Ri ~ 1 M

Maximum allowable operating voltage is equal to the current transformer’s nominal voltage. When reading the measured value, additional error resulting from the clip-on current sensor must also be taken into consideration.

(default setting:

GMC-I Gossen-Metrawatt GmbH 43

METRAHIT⏐TECH: OFF, METRAHIT⏐BASE: 1:1000)

Current

V/Hz, Ω, Temperature, and A/Hz Measurements

5.7.4 Alternating Current Measurement with Clip-On Current Sensor,

A AC and Hz (METRAHIT⏐T

Transformer Output, Voltage/Current

When a clip-on current sensor is connected to the multimeter (METRAHIT⏐T

ECH: V input, METRAHIT⏐BASE: V input), all current

displays appear with the correct value in accordance with the selected transformation factor. sensor is equipped with at least one of the below listed transformation factors, and that the factor has been previously selected in the following

Cl ip ≠

0FF

menu (

), see also chapter 6.4.

Current Clip Setup Menu

MEASURE

SETUP

FUNC

ENTER

 ...  SET rAtE  ...  CLIP

1nFo

1 / 10/100/1000 / 0ff

ECH and METRAHIT⏐BASE only)

The only prerequisite is that the current

FUNC

ENTER

FUNC



ENTER

METRAHIT⏐BASE

METRAHIT⏐TECH

Ri = 9 M

1MΩ

Ri = 1 M

1:1000

003.50

TRMS

FUNC

ENTER

1:1000

1kHz

050.10

Trans. Factors

CL IP

1:1

1 mV / 1 mA

1:10

1m V / 10 mA

1:100

1m V / 100 mA

1:1000

1 mV / 1 A

Measuring Ranges DMM Clip Types

100 mV 1 V 10 V

100.00 mA 1.0000 A 10.000 A WZ12C

1.0000 A 10.000 A 100.00 A WZ12B, Z201A

10.000 A 100.00 A 1000.0 A Z202A

100.00 A 1000.0 A (10000.0 A)

Z202A, Z203A, WZ12C

METRAHIT⏐TECH

V Tem p

COM

Ri = 1 MΩ/9 M

METRAHIT⏐BASE

Tem p

COM

Ri ~ 1 M

(default setting:

44 GMC-I Gossen-Metrawatt GmbH

METRAHIT⏐TECH: OFF, METRAHIT⏐BASE: 1:1000)

Current

5.7.5

Direct, Pulsating and Current Measurement Transformer A DC, A (DC+AC), A AC and Hz (METRAHIT⏐T

Transformer Output, Current/Current

When a clip-on current transformer is connected to the multimeter (METRAHIT⏐T with the correct value in accordance with the selected transformation factor. The only prerequisite is that the current transformer is equipped with at least one of the below listed transformation factors, and that the factor has been previously selected in the following menu

Current Clip Setup Menu

MEASURE

SETUP

FUNC

ENTER

Trans. Factors

CL IP

1:1

1mA/1mA

1:10

1mA/10mA

1:100

1mA/100mA

1:1000

1 mA/1 A

ECH: mA/A input), all current displays appear

(Cl ip ≠ 0FF), see also chapter 6.4.

1nFo

 ...  SET rAtE  ...  CLIP

1 / 10/100/1000 / 0ff

Measuring Ranges DMM Clip Types

100 mA 1 A 10 A

100,00 mA 1,0000 A 10,000 A

1,0000 A 10,000 A 100,00 A

10,000 A 100,00 A 1000,0 A

100,00 A 1000,0 A (10000,0 A)

FUNC

ENTER



with Clip-On Current

FUNC

ENTER

ECH only)

WZ12A, WZ12D, WZ11A, Z3511, Z3512, Z3514

V/Hz, Ω, Temperature, and A/Hz Measurements

1:1000

003.50

FUNC

ENTER

1:1000

TRMS

METRAHIT⏐TECH

V Tem p

COM

003.50

FUNC

ENTER

050.10

Ri ≤ 1

TRMS

(default setting:

GMC-I Gossen-Metrawatt GmbH 45

METRAHIT⏐TECH: OFF)

Current

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. the “SET ” and “tEMP ” menus, as well as

the “SEnd ” and “StorE ” menus included with the

METRAHIT⏐X-

returned to “1nFo” by activating the direction).

➭ After selecting the desired main menu, sub-menus are

accessed by pressing the FUNC | ENTER key.

➭ The desired parameter is selected by repeatedly pressing the

 or  key.

➭ In order to check or change a parameter, acknowledge it with

the FUNC | ENTER key.

➭ The

  keys can be used to position the cursor at the entry

position. The desired value is selected with the help of the

➭ Changes can only be accepted with the FUNC | ENTER key.

➭ You can return to the sub-menu without making any changes

by pushing the ZERO | ESC key, and to the main menu by pressing the same key once again etc.

➭ You can switch to the measuring mode from any menu level by

pressing the FUNC | ENTER key.

TRA⏐OUTDOOR, are accessed, and the display is

  keys (in any

 keys.

After repeatedly pressing the MEASURE | SETUP key (without first turning the multimeter off), you can return to the last selected menu or parameter from the measuring mode.

Example: Setting Time

MEASURE

SETUP

FUNC

ENTER

 ...  set rAte  ...  t iME

1nFo

10:24 (hh:mm)

FUNC

ENTER

 

FUNC

ENTER

Setting hours and minutes:

   Change the setting, the entry position blinks.

ENTER

Advance to desired entry position.

Press and hold the key

FUNC

The new time setting is activated after

to change the setting rapidly.

acknowledgement.

46 GMC-I Gossen-Metrawatt GmbH

6.1 Paths to the Various Parameters 6.2 List of All Parameters

Parameter X

TRATECHPROBASE

0.diSP ••••48: 0.diSP – show/hide leading zeros

MEASURE

020.00

Main Menus →

TRMS

1nFo

FUNC

ENTER

Sub-Menus / Parameters ↓

Query Set Set Set Set

bAtt: VerSion 1tEMP: dAtE: t iME: 0CCvP: *

FUNC

ENTER

000.0

CLEAr StArt/

StoP

Selection

FUNC

ENTER

SETUP

FUNC

ENTER

StArt

StoP

Selection

FUNC

ENTER

1nfo

* SET StorE *

FUNC

ENTER

rAtE *

0.diSP

.diSP

APoFF

bEEP irStb

Addr *

dAtE

* METRAHIT⏐X- ** METRA HIT⏐B

TRA⏐OUTDOOR only

ASE only

tiME CLiP **

Selection

FUNC

ENTER

tEMPSEnd

FUNC

ENTER

°C °F

Selection

FUNC

ENTER

Addr A.diSP ••••49: A.diSP – analog display: select display mode APoFF

bAtt bEEP CLEAr

CLIP

dAtE EMpty

1nfo irStb 1tEMP 0CCvP

rAtE

SEnd SET StArt StoP store tEMP t iME vErSion

• ———

••••

• ———

— • — •

••••

• ———

••••

• ———

••••

• ———

••••

• ———

••••

Device and Measuring Parameters

Page: Header

53: Configuring Interface Parameters

49: APoFF – specified time for automatic shutdown and continuous ON

48: bAtt – query battery voltage

49: bEEP – set the limit value for continuity testing 23: Measurement Data Recording (METRA HIT⏐X-

TRA⏐OUTDOOR only)

43:

Direct and Pulsating Current Measurement with Clip-On Current Sensor, A DC and A (DC+AC) (

METRAHIT⏐T

48: dAtE – query date, 50: dAtE – enter date 23: Measurement Data Recording (METRA HIT⏐X-

TRA⏐OUTDOOR only)

48: Querying Parameters – InFo Menu (as moving letters)

53: Configuring Interface Parameters

48: ItEMP – query reference temperature

23: Measurement Data Recording (METRAHIT⏐X-

DOOR

48: rAtE – set the sampling rate (METRAHIT⏐X-

DOOR

52: Activating the Interface

48: Entering Parameters – SETUP Menu

23: Measurement Data Recording (METRA HIT⏐X-

TRA⏐OUTDOOR only)

37: Temperature Measurement

48: tiME – query time, 50: tiME – set time

48: vErSion – query firmware version

only)

ECH

and

METRAHIT⏐B

ASE

only)

TRA

⏐

OUT-

⏐

OUT-

GMC-I Gossen-Metrawatt GmbH 47

Device and Measuring Parameters

6.3 Querying Parameters – InFo Menu (as moving letters)

bAtt – query battery voltage

MEASURE

vErSion – query firmware version

MEASURE

1nFo bAtt

SETUP

1nFo bAtt:  vErSion: 2.09

SETUP

FUNC

ENTER

FUNC

ENTER

2.75 V.

ItEMP – query reference temperature

The temperature of the internal reference junction is measured with a temperature sensor in close proximity to the input sockets.

MEASURE

dAtE – query date

MEASURE

D = day, M = month, Y = year

1nFo bAtt:  ... 

SETUP

1nFo bAtt:  ... 

SETUP

FUNC

ENTER

FUNC

ENTER

1tEMP: 24 °

dAtE: 31.12.

05 (DD.MM.YY)

Date and time must be reentered after replacing the batteries.

tiME – query time

MEASURE

1nFo bAtt

SETUP

FUNC

ENTER

: 

... 

t iME: 13:46:

(hh:mm:ss)

h = hours, m = minutes, s = seconds

Date and time must be reentered after replacing the batteries.

OCCUP – query memory occupancy (METRAHIT⏐X-TRA⏐OUTDOOR only)

MEASURE

1nFo bAtt

SETUP

FUNC

ENTER

: 

... 

0CCUP:

000.0

6.4 Entering Parameters – SETUP Menu

rAtE – set the sampling rate (METRA HIT⏐X-TRA⏐OUTDOOR only)

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: 00:00.1, 00:00.2, 00:00.5, 00:01.0, 00:02.0, 00:05.0 [h:mm:ss.t] (h = hours, m = minutes, s = sec.,

t = tenths of a sec.

0:00:10, 0:00:20, 0:00:30, 0:00:40, 0:00:50, 0:01:00, 0:02:00, 0:05:00, 0:10:00, 0:20:00, 0:30:00, 0:40:00, 0:50:00, 1:00:00, 2:00:00, 3:00:00, 4:00:00, 5:00:00, 6:00:00, 7:00:00, 8:00:00, 9:00:00

Setting the Sampling Rate

MEASURE

SETUP

1nFo



... 

00:00.1 ... 00:00.5 ... 9:00:00 

FUNC

SET rAtE

ENTER

FUNC

ENTER

FUNC

ENTER

(00:00.5 = 0.5 seconds = default value)

0.diSP – show/hide leading zeros

This parameter determines whether or not leading zeros will appear in the measured value display.

MEASURE

SETUP

1nFo



... 

FUNC

SET rAtE  ...  0.diSP

ENTER

FUNC

ENTER

0000.0 : with leading zeros (default setting)

0.0 : leading zeros suppressed

)

FUNC



ENTER

48 GMC-I Gossen-Metrawatt GmbH

Device and Measuring Parameters

A.diSP – analog display: select display mode

One of two different display modes can be selected for the analog display:

• bArG: bar graph

• Point: pointer

MEASURE

SETUP

FUNC

ENTER

 ...  SET rAtE  ...  A.diSP

1nFo

bArG / Point

FUNC

ENTER



FUNC

ENTER

(bArG = default value)

APoFF – specified time for automatic shutdown and continuous ON

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.

If the on setting is selected, the multimeter is set to continuous operation and

ON appears in the display to the right of the battery

symbol. In this case, the multimeter can only be switched off manually. The “on ” setting can only be cancelled by changing the respective parameter, and not by switching the instrument off.

MEASURE

SETUP

FUNC

ENTER

 ...  SET rAtE  ...  APoFF

1nFo

10 ... 59 min on

FUNC

ENTER

FUNC



ENTER

bEEP – set the limit value for continuity testing

MEASURE

SETUP

FUNC

ENTER

1nFo

 ...  SET rAtE  ...  bEEP

1, 10, 20, 30, 40, 90 Ω 

FUNC

ENTER

FUNC

ENTER

(10 Ω = default setting)

irStb – status of the infrared receiver in the stand-by mode (METRAHIT⏐X-

TRA⏐OUTDOOR only)

See chapter 7.2 on page 53 regarding settings.

Addr – select device address (METRAHIT⏐X-TRA⏐OUTDOOR only

See chapter 7.2 on page 53.

(10 minutes = default setting)

GMC-I Gossen-Metrawatt GmbH 49

Device and Measuring Parameters

dAtE – enter date

Entering the current date makes it possible to acquire measured values in real-time.

MEASURE

SETUP

FUNC

ENTER

 ...  SET rAtE  ...  dAtE

1nFo

31.12 (DD: day . MM: month)

2005 (YYYY: year)

 

FUNC

ENTER

FUNC

ENTER

 

FUNC

ENTER

Date and time must be reentered after replacing the batteries.

tiME – set time

Entering the correct time makes it possible to acquire measured values in real-time.

MEASURE

SETUP

FUNC

ENTER

1nFo  ...  SET rAtE  ...  t iME

10:24 (hh:mm)  

FUNC

ENTER

FUNC

ENTER

Date and time must be reentered after replacing the batteries.

CLIP – set transformation factor (METRAHIT⏐BASE only)

See chapter 5.7.3 ff.

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).

➭ Simultaneously press and hold

ZERO

the and keys,

ESC

ON / OFF

LIGHT

and reinsert the batteries at the same time.

50 GMC-I Gossen-Metrawatt GmbH

Device and Measuring Parameters

GMC-I Gossen-Metrawatt GmbH 51

Interface Operation

7 Interface Operation (METRAHIT⏐X-TRA⏐OUTDOOR only)

The METRAHIT⏐X-TRA⏐OUTDOOR is 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. Beyond this, commands and parameters can be transmitted from the PC to the multimeter as well. The following functions can be executed:

• Configuration and read-out of measuring parameters

• Measuring function and measuring range selection

• Start measurements

• Read out stored measured values

7.1 Activating the Interface

The interface is automatically activated for receiving operation (multimeter receives data from the PC) as soon as the interface is addressed by the PC, assuming that the “irStb ” parameter has been set to “ir on ” (see chapter 7.2), or the instrument is already switched on (the first command wakes up the multimeter, but does not yet execute any further commands).

The “continuous transmission” operating mode is selected manually as described below. In this operating mode, the instrument continuously transmits measurement data to the PC via the interface adapter, which can then be displayed with the help of a terminal program.

Starting Continuous Transmission Operation with Menu Functions

MEASURE

SETUP

 ...  SEnd StArt send

1nFo

FUNC

ENTER

FUNC

ENTER

The symbol blinks at the display in order to indicate interface operation.

Stopping Continuous Transmission Operation with Menu Functions

MEASURE

SETUP

FUNC

ENTER

1nFo

 ...  SEnd send

stop send

ENTER

FUNC

ENTER

FUNC

The symbol is cleared from the display.

Automatic Activation and Deactivation of Transmission Mode Operation

If the sampling rate is 10 seconds or longer, the display is switched off automatically between samples in order to prolong battery service life. The only exception is when the multimeter is set to continuous operation. As soon as an event occurs, the display is automatically switched back on.

52 GMC-I Gossen-Metrawatt GmbH

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:

ir on: 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.

ir oFF: IR does not appear at the display and the infrared

interface is switched off, signals cannot be received.

MEASURE

SETUP

FUNC

ENTER

 ...  SET rAtE  ...  irStb

1nFo

ir on / ir oFF 

FUNC

ENTER

FUNC

ENTER

(irstb = ir oFF = default setting)

Addr – Address

If several multimeters are connected to the PC via an interface adapter, a separate address can be assigned to each instrument. Address number 1 should be selected for the first instrument, 2 should be assigned to the second and so forth.



FUNC

ENTER

FUNC

ENTER

MEASURE

SETUP

FUNC

ENTER

1nFo

 ...  SET rAtE  ...  Addr

00 ... 01 ... 15

(15 = default setting)

GMC-I Gossen-Metrawatt GmbH 53

Technical Data

8 Technical Data

Meas.

Measuring Range

100 mV 10 μV ≥ 9MΩ≥ 9MΩ // < 50 pF 0.09 + 5 with ZERO 1 + 30 (> 300 d) 1)1 + 30 (> 300 d)

1 V 100 μV ≥ 9MΩ≥ 9MΩ // < 50 pF 0.05 + 3 0.5 + 9 (> 200 d) 1 + 30 (> 300 d)

10 V 1 mV ≥ 9MΩ≥ 9MΩ // < 50 pF 0.05 + 3 0.5 + 9 (> 200 d) 1 + 30 (> 300 d)

100 V 10 mV ≥ 9MΩ≥ 9MΩ // < 50 pF 0.05 + 3 0.5 + 9 (> 200 d) 1 + 30 (> 300 d)

1000 V 100 mV ≥ 9MΩ≥ 9MΩ // < 50 pF 0.09 + 3 0.5 + 9 (> 200 d) 1 + 30 (> 300 d)

Function

X-

TRA

UTDOOR

OUTDOOR

PRO

TRA

PRO

ECH

BASE

Values of less than 200 digits are suppressed in the mV range.

At 0 ° ... + 40 °C

Display up to max. 5.1 V, “OL” in excess of 5.1 V.

TECH

Factor: 1:1/10/100/1000

0.1/1/10/100 A 100 mA

1/10/100/1000 A 1 A 0.2 A continuous

10/100/1000/10000 A

0.1/1/10/100 A 100 mV

1/10/100/1000 A 1 V

10/100/1000/10000 A

100 Ω 10 mΩ < 1.4 V Approx. 300 μA 0.2 + 5

1kΩ 100 mΩ < 1.4 V Approx. 250 μA 0.2 + 5

10 kΩ 1 Ω < 1.4 V Approx. 100 μA 0.2 + 5

100 kΩ 10 Ω < 1.4 V Approx. 12 μA 0.2 + 5

1MΩ 100 Ω < 1.4 V Approx. 1.2 μA 0.2 + 5 10 MΩ 1kΩ < 1.4 V Approx. 125 nA 0.5 + 10 40 MΩ 10 kΩ < 1.4 V Approx. 20 nA 2.0 + 10

100 Ω —0.1Ω Approx. 8 V Approx. 1 mA const. 1 + 5

5.1 V

Resolution at Upper

Range Limit

11,999 1199

100 μA 10 nA 12 mV 12 mV 0.5 + 5 1.5 + 10 (> 200 d) 1.5 + 30 (> 200 d)

1 mA 100 nA 120 mV 120 mV 0.5 + 3 1.5 + 10 (> 200 d) 1.5 + 30 (> 200 d)

10 mA 1 μA 16 mV 16 mV 0.5 + 3 1.5 + 10 (> 200 d) 1.5 + 30 (> 200 d)

100 mA 10 μA 160 mV 160 mV 0.5 + 3 1.5 + 10 (> 200 d) 1.5 + 30 (> 200 d)

1 A 100 μA 40 mV 40 mV 0.9 + 10 1.5 + 10 (> 200 d) 1.5 + 30 (> 200 d)

10 A 1 mA 600 mV 600 mV 0.9 + 10 1.5 + 10 (> 200 d) 1.5 + 30 (> 200 d) 10 mA 1 μA 16 mV 16 mV 0.1 + 5 1 + 10 (> 200 d) 1.5 + 30 (> 200 d)

100 mA 10 μA 160 mV 160 mV 0.1 + 5 1 + 10 (> 200 d) 1.5 + 30 (> 200 d)

1 A 100 μA 40 mV 40 mV 0.9 + 10 1 + 10 (> 200 d) 1.5 + 30 (> 200 d)

10 A 1 mA 600 mV 600 mV 0.9 + 10 1 + 10 (> 200 d) 1.5 + 30 (> 200 d)

Input Input impedance

10 A plus clip-on current sensor error

10 V Plus clip-on current sensor error

— 1 mV Approx. 8 V Approx. 1 mA const. 0.5 + 3

Voltage drop, approx. at upper range limit

Current measuring input

Voltage measurement input

ECH: (V socket) Ri =1 MΩ/9 MΩ

ASE: ( V socket) Ri ~1 MΩ

Open-circuit voltage

Input Impedance

(A socket)

Meas. curr. @ range limit

~ /

Intrinsic Errorunder Reference Conditions

±(... % rdg. + ... d) ±(... % rdg. + ... d) ±(... % rdg. + ... d)

Specification see current ranges A (T

±(0.5% rdg. + 10 d)

±(... % rdg. + ... d)

with active ZERO function

Residual value deviates within 1 ... 30 d from the zero point due to TRMS converter when probe tips are short-circuited. See frequency influence on page 56.

Switch-off time/Cool-down time > 30 min and TA ≤ 40 °C

±(1% rdg. + 30 d)

> 300 d

ECH)

±(1% rdg. + 30 d)

> 300 d

Overload Capacity

Value Time

1000 V

AC RMS sine

0.2 A

10 A: ≤ 5 min

16 A: ≤ 30 s

0.2 A 10 A: ≤ 5 min

16 A: ≤ 30 s

Measuring input

10 A: 5 min

Measurement input

1000 V RMS Max. 10 s

1000 V

AC RMS sine

continuous

Max. 10 s

54 GMC-I Gossen-Metrawatt GmbH

Technical Data

Meas.

Function

Measuring Range

Resolution at Upper

Range Limit

11,999 1199 ~ / Value Time

Input impedance

Discharge resistance U

TRA

X-

OUTDOOR

TECH

Hz (V)

Hz (A)

Hz (A )

Hz (V) Hz (A)

MHz

X-

TRA

OUTDOOR

X-

TRA

OUTDOOR

°C/°F

At 0 ° ... + 40 °C

Applies to measurements at film capacitors

Lowest measurable frequency for sinusoidal measuring signals symmetrical to the zero point

Overload capacity of the voltage measurement input: power limiting: frequency x voltage, max. 3 x 10

10 nF 10 pF 10 MΩ 0.7 V 1 + 6

100 nF 100 pF 1 MΩ 0.7 V 1 + 6

1 μF 1 nF 100 kΩ 0.7 V 1 + 6

10 μF10nF12kΩ 0.7 V 1 + 6

100 μF 100 nF 3 kΩ 0.7 V 5 + 6

1000 μF1μF3kΩ 0.7 V 5 + 6

100.00 Hz 0.01 Hz

1.0000 kHz 0.1 Hz

10.000 kHz 1 Hz

100.00 kHz 10 Hz 10 Hz

30.00 kHz 10 Hz 10 Hz

100 Hz ... 1 MHz

0.01 ... 100 Hz

2.0 ... 98% — 0.01% 100 Hz ... 1 kHz 1 Hz 0.1 R per kHz > 2 V ... 5 V

5.0 ... 95% — 0.01% ... 10 kHz 1 Hz 0.1 R per kHz > 2 V ... 5 V

10... 90% — 0.01% ... 100 kHz 1 Hz 0.1 R per kHz > 2 V ... 5 V

Pt100

– 200.0 ...

X-TRA

+850.0 °C

OUTD.

Pt1000

X-TRA

OUTD.

(NiCr-Ni)

– 150.0 ...

+850.0 °C

– 250.0 ...

+1372.0 °C

0.1 °C

V x Hz for U > 100 V

0 max

min

1Hz

1 ... 100 Hz

Overload Capacity

1000 V

DC AC

RMS

Sine

Max. 10 s

Intrinsic Error under Reference Conditions

±(... % rdg. + ... d)

with ZERO function active

±(... % rdg. + ... d)

Hz (V) 8):

Hz(A )8):

0.05 + 3

10)

1000 V

Hz (A):

)

Max. 10 s

0.05 + 3 > 2 V ... 5 V

1000 V Max. 10 s

±(... % rdg. + ... d)

11)

0.3 + 15

11)

0.3 + 15

11)

1% + 5 K

Overload capacity of the current measurement input:

See current measuring ranges for maximum current values.

10)

Input sensitivity, sinusoidal signal, 10% to 100% of the measuring range

11)

Plus sensor deviation

1000 V

DC/AC

RMS

Sine

Max. 10 s

Key: R = meas. range, d = digit(s), rdg. = measured value (reading)

GMC-I Gossen-Metrawatt GmbH 55

Technical Data

Influencing Quantities and Influence Error

Influencing

Quantity

Temperature

With zero balancing

Influencing

Quantity

DATA V, A, Ω, Hz ±10 d MIN / MAX V, A, Ω, Hz ±30 d

Sphere of Influence

0 °C ... +21 °C

and

+25 °C ... +40 °C

Measuring Quantity

Measured Quantity / Measuring Range

V 0.2 + 10

V 0.4 + 10

100 Ω ... 1 MΩ 0.5 + 10

> 1 MΩ 1 + 10

mA/A 0.5 + 10

mA/A 0.8 + 10

10 nF ... 100 μF1 + 5

Hz 0.2 + 10

°C/°F (Pt100/Pt1000) 0.5 + 10 °C/°F thermocouple K 0.2 + 10

Influence Error

(...% rdg. + ... d)

(...% rdg. + ... d) / 10 K

Influence Error

TRA

METRAHIT⏐BASE

Influencing

Quantity

Meas. Quantity/

Meauring

Range

Sphere of Influence

Intrinsic Error

±( ... % rdg. + ... d)

METRAHIT⏐X- METRA

HIT⏐O

METRAHIT⏐TECH

UTDOOR

METRAHIT⏐PRO

> 15 Hz ... 45 Hz 3 + 30 3 + 30

100.00 mV

> 65 Hz ... 1 kHz 2 + 30 3 + 30

> 1 kHz ... 10 kHz 3 + 30 —

> 15 Hz ... 45 Hz 2 + 9 3 + 9

...

> 65 Hz ... 1 kHz 1 + 9 3 + 9

> 1kHz...10/20kHz

3 + 9 —

> 15 Hz ... 45 Hz 2 + 9 3 + 9

> 65 Hz ... 1 kHz 2 + 9 3 + 9

Frequency

1.0000 V

100.00 V

1000.0 V

> 1 kHz ... 10 kHz 3 + 30 —

100.00 μA

10.0000 A

100 mV /

Power limiting: frequency x voltage max. 3 x 106 V x Hz for U > 100 V

The accuracy specification for frequency response is valid within a dis-

1 V / 10 V

> 15 Hz ... 45 Hz

...

> 65 Hz ... 10 kHz

3 + 10 —

> 65 Hz ... 1 kHz — 3 + 10

play value range of 10% to 100% of the measuring range for both measuring modes with the TRMS converter in the AC and (AC+DC) ranges.

METRAHIT⏐X-TRA⏐OUTDOOR: Frequency response up to 20 kHz, METRAHIT⏐T METRAHIT⏐P METRAHIT⏐B

ECH: Frequency response up to 10 kHz,

RO: Frequency response up to 10 kHz, ASE: Frequency response up to 1 kHz

56 GMC-I Gossen-Metrawatt GmbH

Technical Data

Influencing

Quantity

Crest factor CF

Except for sinusoidal waveshape

Influencing Qty. Sphere of Infl. Measured Quantity Influence Error

Relative humidity

Influencing

Quantity

Common Mode Interference Voltage

Series Mode Interference Voltage

Sphere of

Influence

1 ... 3

> 3 ... 5 ± 3 % rdg.

75%

3 days

instrument off

Sphere of Influence

Interference quantity max. 1000 V V > 120 dB

Interference quantity max. 1000 V

50 Hz ... 60 Hz, sine

Interference quantity: V ,, respective

nominal value of the meas. range,

max. 1000 V , 50 Hz ... 60 Hz, sine

Interference quantity max. 1000 V V > 110 dB

Measured Quantity /

Measuring Range

V, A

V, A, Ω, Hz, °C1 x intrinsic error

Measured Quantity /

Measuring Range

1 V , 10 V > 80 dB

Influence Error

± 1 % rdg.

100 V > 70 dB

1000 V > 60 dB

V> 50dB

Damping

Reference Conditions

Ambient temperature +23 °C ±2K Relative humidity 40 ... 75% Measured qty. frequency 45 ... 65 Hz Measured qty. waveshape sine Battery voltage 3 V ±0.1 V

Response Time (after manual range selection)

Measured Quantity /

Measuring Range

V, V

AV , A

100 Ω ... 1 MΩ 2s

10/40 MΩ 5s

Continuity < 50 ms

°C (Pt100) max. 3 s

10 nF ... 100 μFmax. 2s

1 000 μFmax. 7s

>10 Hz 1.5 s

Response Time

Digital Display

1.5 s

Measured Quantity Jump Function

of upper range limit value

Internal Clock

Time format TT.MM.JJJJ hh:mm:ss Resolution 0.1 s Accuracy ±1 minute per month Temperature

influence 50 ppm/K

From 0 to 80%

From ∞ to 50%

From 0 to 50%

GMC-I Gossen-Metrawatt GmbH 57

Technical Data

Data Interface (METRAHIT⏐X-TRA⏐OUTDOOR only)

Type Optical via infrared light through the

Data transmission (data transfer) Serial, bidirectional (not IrDa compatible)

Protocol Device specific Baud Rate 38,400 baud Functions – Select/query measuring functions and

The USB X-TRA plug-in interface adapter (see accessories) is used for adaptation to the PC’s USB port.

housing

parameters

–

Query/transmit momentary measurement data

– Read out stored measurement data

Internal Measured Value Storage (METRAHIT⏐X-

Memory capacity 4 MBit / 540 kB for approx. 15,400

TRA⏐OUTDOOR only)

measured values with time stamp

Power Supply

Battery 2 ea. 1.5 V mignon cell (2 ea. size AA),

Service life With alkaline manganese: approx. 200

Battery test Battery capacity display with battery

Power OFF function The multimeter is switched off

Power pack connector socket (METRAHIT⏐X-

TRA⏐OUTDOOR only)

alkaline manganese per IEC LR6 (2 ea. 1.2 V NiMH rechargeable battery also possible)

hours

symbol in 4 segments: . Querying of momentary battery voltage via menu function.

automatically: – If battery voltage drops to below approx.

1.8 V

– If none of the keys or the rotary switch

are activated for an adjustable duration (10 to 59 min.), and the multimeter is not in the continuous operating mode

If the NA X-TRA power pack (see accessories) has been plugged into the instrument, the batteries are disconnected automatically. Rechargeable batteries can only be recharged externally.

58 GMC-I Gossen-Metrawatt GmbH

Technical Data

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 LCD scale with bar graph or pointer,

Scaling With 4 division lines each

Polarity display With automatic switching Overflow display With the symbol Measuring rate 40 per second and display refresh

Digital

Display / Char. Height Number of places 4½ place 11,999 steps Overflow display “0L” is displayed for ≥12,000 digits Polarity display “–” (minus sign) is displayed

Measuring rate 10 measurements per second;

Refresh Rate 2 times per sec., every 500 ms

depending upon A.diSP parameter setting

1 bar/pointer corresponds to 500 digits at the digital display

(U and I)

7-segment characters / 15 mm

if plus pole is connected to “⊥”

40 per second with Min/Max function except with capacitance, frequency and keying ratio measuring functions

Acoustic Signals

For voltage Intermittent signal at above 1000 V For current Intermittent signal at above 10 A

Continuous signal at above 16 A

Fuse for METRAHIT⏐X-TRA⏐OUTDOOR⏐TECH⏐PRO

Fuse FF (UR) 10 A/1000 V AC/DC,

10 x 38 mm, switching capacity: 30 kA at 1000 V AC/DC, protects the current input socket in the 100 μA to 10 A ranges

Electrical Safety

per IEC 61010-1:2001/VDE 0411-1:2002

Safety class Measuring category III IV Operating voltage 1000 V 600 V Fouling factor Tes t vo l t ag e

6.7 kV~

GMC-I Gossen-Metrawatt GmbH 59

Technical Data

Electromagnetic Compatibility (EMC)

Interference emission EN 61 326: May 2004, class B

Interference immunity EN 61326: May 2004, appendix E

IEC 61000-4-2: Dec. 2001 Feature B

8 kV atmospheric discharge

4 kV contact discharge IEC 61000-4-3: Dec. 2001 Feature A

3V/m

Ambient Conditions

Operating temp. range T

Storage temp. range −25 °C ... +70 °C (without batteries)

Relative humidity Max.75%, no condensation allowed Elevation to 2000 m Deployment

−10 °C ... +50 °C

Indoors; outdoors only within specified ambient conditions

Mechanical Design

Housing Impact resistant plastic (ABS) Dimensions 200 x 87 x 45 mm

Weight Approx. 0.35 kg with batteries Protection Housing: IP 52

Table Excerpt Regarding Significance of the IP Code

IP XY

(1st digit X)

Protection against pene-

tration of solid particles

5 Dust protected 2 Dripping (15° inclination) 6 Dust-proof 5 Jet-water

(without protective rubber cover)

Extra for

METRA

HIT

⏐OUTDOOR

Housing: IP 65

IP XY

(2nd digit Y)

Protection against

penetration by water

60 GMC-I Gossen-Metrawatt GmbH

Technical Data

GMC-I Gossen-Metrawatt GmbH 61

Maintenance – Calibration

9 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!

9.1 Displays – Error Messages

Message Function Meaning

FUSE

9.2 Batteries



Current measurement Blown fuse

In all operating modes Battery voltage has fallen below 1.8 V

Measurement Indicates overflow

Note Removing the Batteries During Periods of Non-Use

The integrated quartz movement draws power from the batteries even when the instrument is switched off. It is advisable to remove the batteries during long periods of non-use for this reason (e.g. vacation). This prevents excessive depletion of the battery, which may result in damage under unfavorable conditions.

Note Battery Replacement for METRAHIT⏐X-TRA⏐OUTDOOR

Stored measurement data are lost when the batteries are replaced. In order to prevent data loss, it is advisable to backup your data to a PC with the help of METRA⏐V

IEW soft-

ware before replacing the batteries. The selected operating parameters remain in memory, although date and time must be reentered.

Battery

The current battery charge level can be queried in the “1nfo” menu:

MEASURE

Make sure that no battery leakage has occurred before initial start-up, as well as after long periods of storage. Continue to inspect the batteries for leakage at short, regular intervals.

If battery leakage has occurred, carefully and completely clean the electrolyte from the instrument with a damp cloth, and replace the batteries before using the instrument.

If the “ ” symbol appears at the display, the batteries should be replaced as soon as possible. You can continue working with the instrument, but reduced measuring accuracy may result.

The instrument requires two 1.5 V batteries in accordance with IEC R 6 or IEC LR 6, or two equivalent rechargeable NiCd batteries.

1nFo bAtt

SETUP

FUNC

ENTER

2.75 V.

62 GMC-I Gossen-Metrawatt GmbH

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.

➭ Set the instrument face down onto the working surface.

➭ Turn the slotted screw on the lid with the battery symbols

counterclockwise.

➭ Lift off the lid and remove the batteries from the battery

compartment.

➭ Insert two new 1.5 V mignon batteries into the battery

compartment, making sure that the plus and minus poles match up with the provided polarity symbols.

➭ When replacing the battery compartment lid, insert the side

with the guide hooks first. Tighten the screw by turning it clockwise.

➭ Please dispose of depleted batteries in accordance with

environmental protection regulations!

9.3 Fuse (METRA METRA

Testing the Fuse

The fuse is tested automatically:

• When the instrument is switched on with the rotary switch in

the A position

• When the instrument is already on and the rotary switch is

turned to the A position

HIT⏐X-

HIT⏐PRO only)

TRA

⏐

UTDOOR

, METRA

HIT⏐T

ECH

and

• In the active current measuring range when voltage is applied 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

Replacing the Fuse

If a fuse should blow, eliminate the cause of overload before placing the instrument back into service!

Attention!

Disconnect the instrument from the measuring circuit before opening the fuse cover in order to replace the fuse!

➭ Set the instrument face down onto the working surface.

➭ Turn the slotted screw on the cover with the fuse symbol

counterclockwise.

➭ Lift off the cover and pry the fuse out using the flat side of the

fuse cover.

➭ Insert a new fuse. Make sure that the fuse is centered, i.e.

between the tabs at the sides.

➭ When replacing the fuse cover, insert the side with the guide

hooks first. Tighten the screw by turning it clockwise.

➭ Dispose of the blown fuse with the trash.

Blown Fuse

GMC-I Gossen-Metrawatt GmbH 63

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.

Note



Testing the Fuse with the Instrument Switched On After inserting the fuse with the instrument switched on, the instrument must be switched off briefly and then switched back on, or briefly switched to a non-current measuring range and then back to the “A” measuring range. If contact is poor or the fuse is blown, FUSE appears at the display.

9.4 Housing Maintenance

No special maintenance is required for the housing. Keep outside surfaces clean. Use a slightly dampened cloth for cleaning. Avoid the use of cleansers, abrasives or solvents.

9.5 Return and Environmentally Sound Disposal

The instrument is a category 9 product (monitoring and control instrument) in accordance with ElektroG: German electrical and electronic device law). This device is not subject to the RoHS directive.

We identify our electrical and electronic devices (as of August 2005) in accordance with WEEE 2002/96/EC and ElektroG with the symbol shown at the right per DIN EN 50419.

These devices may not be disposed of with the trash. Please contact our service department regarding the return of old

devices (see page 4).

9.6 Recalibration Service

64 GMC-I Gossen-Metrawatt GmbH

9.7 Manufacturer’s Guarantee

All METRAHIT⏐ measuring and calibration instruments are guaranteed for a period of 3 years after date of shipment. The manufacturer’s guarantee covers materials and workmanship. Damages resulting from use for any other than the intended purpose, as well as any and all consequential damages, are excluded.

Calibration is guaranteed for a period of 12 months.

Maintenance – Calibration

GMC-I Gossen-Metrawatt GmbH 65

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. Currently up-to-date accessories which are suitable for your measuring instrument are listed at the following web address along with photo, order number, description and, depending upon the scope of the respective accessory, data sheet and operating instructions: www.gossenmetrawatt.de (→ Measuring Technology - Portable → Digital Multimeters →

METRAHIT⏐ ... → Accessories).

10.2 Technical Data for Measurement Cables (included: KS17-2 safety cable set)

Electrical Safety

Maximum rated voltage Measuring category 1000 V CAT III, 600 V CAT IV Maximum rated current 16 A

Ambient Conditions (EN 61010-031)

Temperature –20 °C ... + 50 °C Relative humidity 50 to 80% Fouling factor 2

10.3 NA X-TRA Power Pack (not included)

Use only the power pack from GMC-I Gossen-Metrawatt GmbH in combination with your instrument. This assures operator safety by means of an extremely well insulated cable, and safe electrical isolation (nominal secondary ratings: 5 V / 600 mA). Installed batteries are disconnected electronically if the power pack is used, and need not be removed from the instrument.

66 GMC-I Gossen-Metrawatt GmbH

10.4 Interface Accessories for METRA HIT⏐X-TRA⏐OUTDOOR (not

included)

USB X-TRA Bidirectional Interface Adapter

This adapter makes it possible to connect

METRAHIT⏐X-

TRA⏐OUTDOOR multimeters 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.

METRAwin 10 PC Analysis Software METRAwin 10 PC software is a multilingual, measurement data log-

ging program for recording, visualizing, evaluating and documenting measured values from METRAHIT⏐ multimeters.

The following conditions must be fulfilled in order to allow for use of METRAwin 10 :

Hardware

– IBM compatible Windows PC, Pentium processor with

200 MHz or better and at least 64 MB RAM – SVGA monitor with at least 1024 x 768 pixels – Hard disk with at least 40 MB available memory –CD-ROM drive – Microsoft compatible mouse – Windows-supported printer – 1 USB port for using USB X-TRA

Accessories

Software

– MS Windows 98, ME, 2000 or XP

GMC-I Gossen-Metrawatt GmbH 67

Index

11 Index

Numerics

0.diSP ................................................................... 48

A.diSP ................................................................... 49

Addr ...................................................................... 53

APoFF ................................................................... 49

Automatic Shutdown

.......................................................17

Disabling

Specifying a Time .........................................17

AUTO-Range Function ......................................... 18

bAtt ....................................................................... 48

Batteries

Charge Level .................................................62

Charging Level ..............................................13

Periods of Non-Use ......................................62

Replacement .................................................63

bEEP ..................................................................... 49

Cable Resistance ................................................. 38

Capacitance Measurement ................................. 39

Clear Memory ....................................................... 24

Clip-On Current Sensor ................................. 43, 44

Clip-On Current Transformer .............................. 45

Continuity Test ..................................................... 35

Current Measurement

Notes .............................................................40

Scope of Functions .......................................40

dAtE ................................................................. 48, 50

Default Settings .................................................... 50

Diode Test ............................................................. 36

Display Illumination ..............................................16

Error Messages ....................................................62

Fuse

Characteristic Values ....................................59

Housing Maintenance .......................................... 64

Interfaces

Accessories ...................................................67

States ............................................................13

irStb ....................................................................... 53

itEMP .....................................................................48

Keying Ratio Measurement ..................................33

Manufacturer’s Guarantee ................................... 65

Measured Value Storage

DATA Function ..............................................21

Min-Max Values ............................................22

Measurement Cables ........................................... 66

Measuring Category

Characteristic Values

....................................59

Significance .................................................... 8

Measuring Range Selection

Automatic ...................................................... 18

Manual .......................................................... 18

Memory

Ending Recording ......................................... 24

Querying Occupancy .................................... 24

Start Recording ............................................. 23

OCCUP ...................................................................48

Overview

Keys and Connections

Parameters ...................................................47

.................................. 12

Power Pack

Accessories

Connector Socket Position ........................... 15

Initial Start-Up ............................................... 16

Product Support ......................................................3

Product Support Hotline .........................................3

.................................................. 66

rAtE ........................................................................48

Recalibration Service ........................................4, 64

Remote ..................................................................37

Repair and Replacement Parts Service .................4

Replacing the Fuse ...............................................63

Resistance Measurement .....................................34

Return of Old Devices ...........................................64

68 GMC-I Gossen-Metrawatt GmbH

Safety Precautions ................................................. 8

Software Enabling .................................................. 3

Standard Equipment .............................................. 2

Switching the Instrument On

Manual ..........................................................16

Via PC ............................................................16

Symbols

Digital Display ...............................................13

Instrument .....................................................15

Rotary Switch Positions ................................14

Temperature Measurement

With Resistance Thermometers

With Thermocouples .....................................37

tiME ................................................................. 48, 50

Training ................................................................... 3

...................38

Use for Intended Purpose .................................... 10

vErSion .................................................................. 48

Voltage Comparator ....................................... 29, 31

Voltage Measurement

Notes .............................................................26

Over 1000 V .................................................32

Scope of Functions .......................................26

WEEE Mark ........................................................... 15

Index

GMC-I Gossen-Metrawatt GmbH 69

Edited in Germany • Subject to change without notice • A pdf version is available on the internet

GMC-I Gossen-Metrawatt GmbH Thomas-Mann-Str. 16-20 90471 Nürnberg •

Germany

Phone +49 911-8602-111 Fax +49 911-8602-777 E-Mail info@gossenmetrawatt.com www.gossenmetrawatt.com

Gossen Metrawatt METRAHIT X-TRA, METRAHIT TECH, METRAHIT PRO, METRAHIT BASE, METRAHIT OUTDOOR User guide

Specifications and Main Features

Frequently Asked Questions

User Manual

1 Safety Features and Precautions

1.1 Use for Intended Purpose

1.2 Meanings of Danger Symbols

1.3 Meanings of Acoustic Warning Signals

3 Initial Start-Up

3.1 Inserting Batteries or Rechargeable Batteries

3.2 Activation

3.3 Setting the Operating Parameters

3.4 Switching the Instrument Off

4 Control Functions

4.1 Selecting Measuring Functions and Measuring Ranges

4.1.1 Automatic Range Selection

4.1.2 Manual Measuring Range Selection

4.1.3 Quick Measurements

4.2 Zero Offset / Relative Measurements

4.3 Display (LCD)

4.3.1 Digital Display

4.3.2 Analog Display

4.4 Measured Value Storage: DATA (auto-hold / compare)

5 Measurements

5.1 Voltage Measurement

5.1.1 Direct and Pulsating Voltage Measurement, V DC and V (DC+AC)

5.1.4 Transient Overvoltages

5.1.5 Voltage Measurements at Above 1000 V

5.3 Continuity Test

5.4 Diode Testing with a Constant Current of 1 mA

5.5 Temperature Measurement

5.5.1 Measurement with Thermocouples, Temp TC

5.7 Current Measurement

6 Device and Measuring Parameters

6.1 Paths to the Various Parameters 6.2 List of All Parameters

6.5 Default Settings

7.1 Activating the Interface

7.2 Configuring Interface Parameters

8 Technical Data

9 Maintenance and Calibration

9.2 Batteries

9.4 Housing Maintenance

9.5 Return and Environmentally Sound Disposal

9.6 Recalibration Service

9.7 Manufacturer’s Guarantee

10 Accessories

10.1 General

10.2 Technical Data for Measurement Cables (included: KS17-2 safety cable set)

10.3 NA X-TRA Power Pack (not included)

11 Index