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Gossen MetraWatt METRAHit 28C light, Руководство по эксплуатации, Страница: 19 / 26

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GOSSEN METRAWATT GMBH

19

10

Accessories

Interface adapters

 

BD232 

(without memory), in combination with 

calibration software METRAwin

90-2, allow for remote con-

trol of the instrument by PC.

USB-HIT Interface Adapter

Alternatively, the METRA HIT

28c 

light

 can also be con-

nected to the USB interface of a PC via an USB-HIT adapter. 
The driver to be installed allocates a virtual COM interface to 
the instrument.
A 2x series multimeter which can be optionally embedded in 
a calibration system can be connected via another USB-HIT 
adapter with a second USB interface at the PC.

Software 

METRAwin

90-2

This software allows for paperless documentation and man-
agement of calibration results, the creation of calibration pro-
cedures and remote control of the calibrator.
METRA HIT

28c 

light

 sequence controls can be imple-

mented online, or off-line after downloading complete calibra-
tion procedures.

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

90-2:

Hardware Requirements

–

WINDOWS and IBM compatible PC with at least
a 200 MHz Pentium CPU and 64 MB main memory

–

SVGA monitor with a minimum of 800 x 600 pixels

–

Hard disk with at least 40 MB free memory

–

3½" floppy disk drive for 1.4 MB floppies

–

MICROSOFT compatible mouse

–

if you want to print your data, a WINDOWS compatible 
printer.

–

1 free serial COM interface for utilizing BD232

or
– 1 USB interface for utilizing 

USB-HIT

Software Requirements

➭

WINDOWS 95, 98, ME, NT4.0, 2000 or XP

Содержание METRAHit 28C light

Страница 1: ...Operating Instructions METRA HIT 28c light Calibrator 3 349 317 15 6 2 05 ...

Страница 2: ...nnector jack for NA5 600 power pack 8 Connector jacks for calibrator output 9 DKD calibration mark see page 4 Symbols used in the Digital Display 1 Main display with decimal point and polarity display 2 Auxiliary display with decimal point and polarity display 3 Simulator in continuous operation 4 NUM Numeric entry of output signal 5 INT Interval sequence active 6 RAMP Ramp function active 7 ON Ca...

Страница 3: ...Fuses 24 12 4 Housing 24 13 Calibrator Messages 24 14 Repair and Replacement Parts Service DKD Calibration Lab and Rental Instrument Service 25 15 Warranty 25 16 Product Support 25 1 Safety Features and Precautions You have selected an instrument which provides you with a high level of safety This instrument fulfills the requirements of the applicable European and national EC guidelines We confirm...

Страница 4: ...t back to the cali brator In order to avoid damage to the instrument when interfer ence voltages are applied within allowable limit values the mA SINK and mA SOURCE measuring circuit is equipped with a fuse F3 which makes this measuring circuit highly resistive if excessive current should occur in the event of a fault for the duration of overloading Warning The instrument may not be operated in ex...

Страница 5: ...is shown in the diagram on page 3 The instrument is ready for calibration as soon as the key is released Switching the Instrument On with a PC After transmission of a data frame from the PC the simulator is switched on See also chapter 9 2 Note Electrical discharge and high frequency interference may cause incorrect displays to appear and may dis able the simulator In such cases switch the instru ...

Страница 6: ...nt of one another with the frequency generator The output signal is a square wave The resistance of the interconnected circuit should not be any less than 1 kΩ Select the Hz calibration function with the rotary switch Setting voltage amplitude 0 15 V Press the ESC key until you proceed to the menu for set ting voltage amplitude The decade i e the position of the digit to be changed is selected wit...

Страница 7: ... the position of the digit to be changed is selected with the keys and the respective digit is set with the keys Note The following error messages may appear HiCurr high current current too high where I 4 5 mA and LoCurr low current current too low or polarity reversal where I 40 µA i e open jack sockets Attention In this operating mode interference voltages must not be applied to the calibrator j...

Страница 8: ...tern Press the key to return to the temperature si mulation value main menu The measured internal refer nece temperature is indicated with an I for internal on the right hand side at the bottom of the auxiliary display extern Press the key to proceed to the temperature value sub menu Setting the external temperature value The last entry position on the right hand side blinks Enter the digits with ...

Страница 9: ...of a high interference voltage the in strument calibrator is protected by a replaceable fuse F3 see chapter 12 3 Example ad a Internal Reference Junction Example ad b External Reference Junction Selecting Sensor Type Setting the Temperature Simulation Value and Entering the External Reference Temperature Device to be calibrated Terminal Block Equalizing Lead CALIBRATOR Output Device to be calibrat...

Страница 10: ...t sink operating mode because thermal overload would otherwise occur and the fuse F3 would blow LoVoltappears at the display where the voltage is too low Example of a 2 Wire Transmitter Measuring Circuit 7 2 Current Source Internal supply power is used for the simulation of a current source Note The internal control circuit of the current source is monitored if voltage drops by more than 20 V at t...

Страница 11: ...and recorders during single handed operation Input parameters for interval sequences include All simulator functions except for Hz can be adjusted as output quantities A lower Start and an upper End range limit can be selected for each output quantity from within the overall range The number of steps can be set within a range of 1 99 9 The number of steps can be entered as a whole number as well w...

Страница 12: ...nu Flowchart on page 12 2 The sequence is stopped by pressing the or the key Interval time elapsed thus far is saved as tx 3 The sequence is resumed by pressing the key and remaining sequence duration ty is equal to t1 tx 4 Stop the interval sequence by simultaneously pressing and holding the and the key 2 audible acoustic sig nals must be generated Menu Flowchart Starting and Stopping the Interva...

Страница 13: ... or temp 0 20 Int range mA Range 0 20 4 20 0 24 10 000 Int start mA 20 000 Int end mA 05 5 Int steps Number of 02 00 Int t1 auto Int no Interval Duration Periodic Sequence YES no Start End Output Quantity SEt must blink Configure the ramp Lower Range Limit Upper Range Limit 2x Interval Steps t1 s ESC ESC ESC ESC ESC ESC ESC ESC ...

Страница 14: ...ences Once only t1 t2 t3 Repetitive t1 t2 t3 t2 t1 t2 t3 Examples of Ramp Sequences Example of a Periodic Ramp Sequence Manually Controlled Ramp Sequences After configuring all parameters in accordance with the menu flowchart on page 15 rising or declining ramps can be trig gered with the and the keys The relationship between the output signal and each of the key operations is depicted with the he...

Страница 15: ...mp 0 20 ramp range mA Range 0 20 4 20 0 24 10 000 ramp start mA 20 000 ramp end mA 00 05 ramp t1 Rise Time t1 02 00 ramp t2 00 28 ramp t3 repeat ramp yes Dwell Time t2 Periodic Ramp YES no Start End Output Quantity SEt must blink Configure ramp Lower Range Limit Upper Range Limit 2x ESC ESC ESC ESC ESC ESC ESC ESC Decline Time t3 ESC ...

Страница 16: ... in order to change the cor responding parameter or parameters After the desired digit has been selected with the keys and the value has been adjusted with the keys the next digit is accessed with the key or the display is returned to the start menu or switched to the next sub menu The calibration mode is started by repeatedly pressing the ESC key until the simulator display appears The calibrator...

Страница 17: ...tIme 15 set addr ESC Change Value Set Device Address Acknowledge Address 15 50 05 set tIme ESC Change Value Set Time Acknowledge Entry 20 11 01 set date Set Date Select Position Possible Settings TT MM JJ TT day MM month JJ year Possible Settings hh mm ss hh hour mm minute ss second Digit blinks Possible Setting Values see also chapter 9 2 0 15 set Change Value Select Position ESC set ESC Acknowle...

Страница 18: ...ardless of the actual address Switching the Interface On via PC After transmission of a data frame from the PC the simulator is switched on For this reason the plug type mains supply should be used for long operational periods This avoids automatic deactiva tion by the battery monitoring circuit Operating Controls in REMOTE Operation When set to REMOTE operation the instrument reacts like in local...

Страница 19: ...less documentation and man agement of calibration results the creation of calibration pro cedures and remote control of the calibrator METRA HIT 28c light sequence controls can be imple mented online or off line after downloading complete calibra tion procedures The following conditions must be fulfilled in order to allow for use of METRAwin 90 2 Hardware Requirements WINDOWS and IBM compatible PC...

Страница 20: ...laces With Load of Intrinsic Error Over load Direct Voltage Simulator of s mV Imax V 0 300mV 0 01 mV 700 Ω 0 05 0 02 18 mA 2 0 3 V 0 1 mV 1000 Ω 0 05 0 2 0 10 V 1 mV 1000 Ω 0 05 2 0 15 V 1 mV 1000 Ω 0 05 2 Pulse Frequency Generator Keying ratio mark to space ratio 50 amplitude 10 mV 15 V of s Hz Imax Hz 1 Hz 1 kHz 0 1 8Hz1 1000 Ω 0 05 0 2 18 mA Current Source Max Load Impedance of s µA mA 4 20 mA ...

Страница 21: ...reased by a factor of 1 8 The F sub ranges are calculated as follows F 32 C x 1 8 Additional Error for Thermocouple Simulation Thermocouple Type T Error in K for Thermocouple Types at Ref Temp 0 C Sub Range C J L T U K E S R B N 200 100 1 17 0 83 1 52 1 2 1 59 1 03 2 38 100 0 0 55 0 56 0 78 0 77 0 73 0 51 50 4 79 50 5 29 1 03 0 100 0 42 0 41 0 52 0 51 0 53 0 35 3 77 3 92 0 77 100 200 0 46 0 45 0 4...

Страница 22: ...ination Factor 2 Test Voltage 500 V per EN 61010 1 2001 VDE 0411 1 2002 Electromagnetic Compatibility EMC Interference emission EN 61326 2002 class B Interference immunity EN 61326 2002 IEC 61000 4 2 Feature A 8 kV atmospheric discharge 4 kV contact discharge IEC 61000 4 3 Feature B 3 V m Data Interface Data Transmission optical via infrared light through the housing with interface adapter as acce...

Страница 23: ...ordance with IEC R 6 or IEC LR 6 or equivalent rechargeable batter ies Replacing the Batteries Set the instrument face down onto a flat working surface loosen the two screws at the back and lift off the housing base starting at the bottom The housing top and hous ing bottom are held together with the help of snap hooks at the top front Remove the batteries from the battery compartment Insert three...

Страница 24: ...for each series METRA HIT 28c light calibrator If a unit of measure blinks this indicates that the balancing constant which has been established and saved to the calibrator is no longer available for the respective function If this is the case results may deviate from the specification We recommend sending the instrument to our Repair and Replacement Parts department for rebalancing see chapter 14...

Страница 25: ... expertise in the field of metrol ogy from test reports and proprietary calibration certificates right on up to DKD calibration certificates Our spectrum of offerings is rounded out with free test equip ment management An on site DKD calibration station is an integral part of our ser vice department If errors are discovered during calibration our specialized personnel are capable of completing rep...

Страница 26: ...change without notice A pdf version is available on the Internet GOSSEN METRAWATT GMBH Thomas Mann Str 16 20 90471 Nürnberg Germany Phone 49 0 911 8602 0 Fax 49 0 911 8602 669 E Mail info gossenmetrawatt com www gossenmetrawatt com ...

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