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Summary of Contents for Gossen MetraWatt METRAHIT CAL
- Page 1 Operating Instructions METRAHITC 3-349-442-03 Calibrator 14/8.24...
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Page 2: Table Of Contents
15.2 Fuses ..................33 Voltage Source [V] .................18 15.3 Recalibration ................34 Frequency Generator (positive square-wave pulses) [Hz] ....19 Repair ....................34 Resistance Simulation [] ............20 Contact, Support and Service ............35 CE Declaration ................35 Disposal and Environmental Protection ........35 Gossen Metrawatt GmbH... -
Page 3: Safety Instructions
General • The instruments and accessories of Gossen Metrawatt GmbH are designed to ensure optimum compatibility with the Gossen • The device may only be used by qualified electricians in the Metrawatt products that are expressly provided for them. - Page 4 • When using (rechargeable) batteries, the respective test/mea- suring instrument may only be used with inserted and secured battery compartment lid. Otherwise, dangerous voltages may occur at the battery contacts under certain circumstances. Gossen Metrawatt GmbH...
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Page 5: Application
3.1 Scope of Delivery as for testing and laboratory applications. Please check the scope of delivery for completeness and intactness. To do so, the METRAHIT CAL generates mV, V and mA signals, simulates thermo-voltages for various types of thermocouples for Calibrator METRAHIT CAL predefined temperatures (°C or °F), as well as resistance values for... - Page 6 (e.g. a second test probe). Power Pack NA X-TRA (Z218G) (not included) Use power packs from Gossen Metrawatt GmbH only in combina- tion 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).
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Page 7: Instrument Overview
Operating mode SELECT RANGE: Interval function selection Not a measurement input! Do not apply interference voltage, 13 Power pack connector jack (accessory: NA X-TRA) except for current sink. 14 Infrared interface (accessory interface adapter: TRA) USB X- Gossen Metrawatt GmbH... -
Page 8: Symbols On The Instrument And The Included Accessories
Data transmission to / from calibrator active trash. Further information regarding the WEEE mark can be accessed on the Internet at www.gossenme- IR interface in standby mode trawatt.com by entering the search term “WEEE”. (ready to receive starting commands) Gossen Metrawatt GmbH... -
Page 9: Applicable Regulations And Standards
0 27 V. The calibrator is protected against brief application of a large inter- ference voltage with a replaceable fuse in the event of operator error, i.e. in the event of overloading > I the fuse may blow. Gossen Metrawatt GmbH... - Page 10 50 °C to 150 C. Internal reference junction: 2 K intrinsic error External reference junction: Entry –30 60 C Formula for temperature conversion from Celsius to Fahrenheit: Key: S = setting value T [F] = 32 + T [C] x 1.8. Gossen Metrawatt GmbH...
- Page 11 Source, 20 mA 310 mA 1700 ... 1800 If voltage drops below 1.8 V, the instrument is switched off automatically. Battery indicator Battery capacity display via battery symbol ““. Querying of momentary battery voltage via menu function Gossen Metrawatt GmbH...
- Page 12 Interference emission EN 61326-1, class B objects: protected against dust in harmful quanti- ties, protection against water ingress: protection Interference immunity EN 61326-1 against ingress of splashing water from all sides; EN 61326-2-1 pressure equalization via the housing) Gossen Metrawatt GmbH...
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Page 13: Operation
(Z218G) power pack is used, and need not be removed from the instrument, but reduced accuracy may result. instrument. ➭ Connect the NA X-TRA with the connector jack for power packs. See chap. 3.3 on page 7. ➭ Connect the NA X-TRA to a mains power outlet. Gossen Metrawatt GmbH... -
Page 14: Switching The Instrument On/Off
If the problem persists, briefly dislodge the bat- tery from the connector contacts. Switching the Instrument Off Manually ➭ Press and hold the ON / OFF | LIGHT key until OFF appears at the display. Shutdown is acknowledged with two, brief acoustic signals. Gossen Metrawatt GmbH... -
Page 15: Setting Device And Calibration Parameters
SEL | ESC key once again etc. ... 24. 2 °C inFo bAtt 1tEMP intern SETUP ENTER ➭ You can switch to the calibrating mode from any menu level by pressing the MEAS/CAL | SETUP key. Gossen Metrawatt GmbH... -
Page 16: Entering Parameters - Setup Menu
10 ... 59 min on APoFF set ies. ENTER (10 min = default setting) Addr – Set Device Address tEMP – °C/°F setting, select internal/external reference temperature See chap. 12.2 regarding settings. See chap. 9 regarding selection. Gossen Metrawatt GmbH... -
Page 17: Reset Device
• If you are under the impression that the multimeter does not work correctly Attention! Disconnect all cables from the instrument. ZERO/SEL ON/OFF ➭ Simultaneously press and hold the LIGHT keys and reinsert the batteries at the same time. Gossen Metrawatt GmbH... -
Page 18: Voltage Source [V]
➭ The output can be deactivated with the OUT | ENTER key ], or activated once again. (Negative values within a range of 300 mV can be selected by scrolling with the key to below the zero point.) Gossen Metrawatt GmbH... -
Page 19: Frequency Generator (Positive Square-Wave Pulses) [Hz]
Select the position of the digit you wish to change with the keys, and change the respective digit with the keys. 0000.0 Hz ➭ The output can be deactivated with the OUT | ENTER key ], or activated once again. Gossen Metrawatt GmbH... -
Page 20: Resistance Simulation []
➭ Switch to the interval or ramp function menu with the ment is started before response time has elapsed. The calibrator keys. Start the respective function with OUT | ENTER. cannot be used for devices of this type. Gossen Metrawatt GmbH... -
Page 21: Temperature Simulation [°C / °F]
➭ Select the desired sensor with the keys. Acknowledge your selection with OUT | ENTER. The display is switched to the MEAS/CAL 22.4 °C temp extern window for temperature value entry, but the selected sensor SETUP still appears in the auxiliary display. Gossen Metrawatt GmbH... -
Page 22: Temperature Simulation For Resistance Temperature Detectors - Temp Rtd Setting
30 ms. Devices under test with non-continuous measuring current (e.g. scanned measuring inputs) result in erroneous measured values, if measurement is started before response time has elapsed. The calibrator cannot be used for devices of this type. Gossen Metrawatt GmbH... - Page 23 Device to be calibrated Otherwise, the external reference temperature is entered in all cases where temperature measurement at the device to be cali- brated is accomplished by means of a thermostatic reference junc- tion (end of the thermocouple equalizing lead). Gossen Metrawatt GmbH...
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Page 24: Current Source And Current Sink [Ma]
]. Select the desired current range with the select range keys. ➭ Switch to the interval or ramp function menu with the keys. Start the respective function with OUT | ENTER. Gossen Metrawatt GmbH... -
Page 25: Current Source
Internal supply power is used to simulate a current source. Note! The current source’s internal control loop is monitored: If voltage drop at the external load (burden) is greater than 20 V, or if the electrical circuit is interrupted, “Hi burd” appears at the display. Gossen Metrawatt GmbH... -
Page 26: Interval Functions, Ramp Functions And Procedures
The number of steps can be entered as a whole number as well, which is especially practical for analog indicators and Manual recorders with non-standardized scale divisions. • The interval duration per step (t1) can be selected from within a range of 1 second to60 minutes. Gossen Metrawatt GmbH... - Page 27 or the key. ZERO/SEL The relationship between the output signal and each of the key 3 Stop the interval sequence by pressing the key. operations is depicted with the help of the following example. Gossen Metrawatt GmbH...
- Page 28 Interval time elapsed thus far is saved as t 3 The sequence is resumed by pressing the key, and remain- ing sequence duration t = t1 – t ZERO/SEL 4 Stop the interval sequence by pressing the key. Gossen Metrawatt GmbH...
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Page 29: Read-Out A Periodic Ramp - Ramp Function
0 seconds … 60 minutes. • There are 2 ramp sequences: – One-time only ( ): t1, t2, t3 onCE – Repetition ( ): t1, t2, t3, t2, t1, t2, t3, … repeat 0, 1, 2 2, 1 ,2 Gossen Metrawatt GmbH... - Page 30 The relationship between the output signal and each of the key 5 Start a decaying ramp with the key, remaining dwell time t2 is cleared. operations is depicted with the help of the following example. ZERO/SEL 6 Stop the ramp sequence by pressing Gossen Metrawatt GmbH...
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Page 31: Interface Operation (With Selector Switch Setting Off)
(optional accessory, see chap. 3.2 on page 5). This prevents automatic shutdown due to battery voltage MEAS/CAL inFo time Addr monitoring. ENTER SETUP 00 ... 01 ... 15 ENTER ENTER (Addr = = default setting) Gossen Metrawatt GmbH... -
Page 32: Displays - Error Messages
- For protection, we recommend the accessories available ate from the specification. We recommend sending the instrument for the instrument (transport case, pouches, etc.); to our Service (see chap. 17 on page 35). details can be found in the data sheet of the instrument. Gossen Metrawatt GmbH... -
Page 33: Maintenance
The fuse is tested automatically when the device is switched on. ➭ Dispose of the blown fuse properly (see chap. 19 on page 35). If the fuse is blown or has not been inserted, “FuSE” fuse blinks at the digital display. Blown fuse Gossen Metrawatt GmbH... -
Page 34: Recalibration
Consequently, the instrument’s characteristic values lie tion and dielectric strength have been tested and approved at within the specifications and the first calibration interval can our factory or by an authorized service center. be determined as of the date of receipt. Gossen Metrawatt GmbH... -
Page 35: Contact, Support And Service
17 Contact, Support and Service 18 CE Declaration Gossen Metrawatt GmbH can be contacted directly and conve- The instrument fulfills all requirements of applicable EU directives niently – we have a single number for everything! Whether you and national regulations. We confirm this with the CE mark. - Page 36 Old devices, electrical or electronic accessories and waste batter- ies (including rechargeable batteries) used in Germany can be returned free of charge to Gossen Metrawatt GmbH or the service provider responsible for their disposal in compliance with applica- ble regulations, in particular laws concerning packaging and haz- ardous goods.
- Page 37 © Gossen Metrawatt GmbH Prepared in Germany • Subject to change without notice / errors excepted • A pdf version is available on the Internet All trademarks, registered trademarks, logos, product names, and company names are the property of their respective owners.
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