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Martel MC1000 Скачать руководство пользователя страница 17

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4. Serial Communications

The MC1000 calibrator is equipped with a RS-
232 serial communications port, which is locat-
ed on the top of the case.
Note: The user will require a special RS-232
cable to connect the calibrator to a computer or
terminal.

Communication

Once the cable is attached, set the communica-
tions program settings as follows:

Baud Rate = 9600
Data Bits = 8
Stop Bits = 1
Parity =

None

Flow Control = Xon/Xoff

J. Sourcing Resistance Into a RTD

Transmitter

1. As described previously in section F the

MC1000 can source resistance in a RTD
Transmitter or measuring device. In many
cases the unit under test will require a 3 or 4
wire connection to achieve best accuracy.
Refer to Figure 10 for connection information.

Figure 10.

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Содержание MC1000

Страница 1: ...MC1000 Multi Function Calibrator ...

Страница 2: ... Measuring Low Voltage and Frequency 10 C Measuring Current 11 D Sourcing Current 11 E Simulating Current 12 F Sourcing Voltage Resistance Frequency 12 G Sourcing a Thermocouple Signal 13 H Measuring Temperature Using a Thermocouple 13 I Measuring Resistance RTDs 13 J Sourcing Resistance RTDs 15 4 Serial Communications 15 5 Maintenance A Power Requirements 19 B Calibration 19 C Field Replacement F...

Страница 3: ...g the basic operation of the keys and their functions 1 1 Customer Service Corporate Office www martelcalibrators com e mail sales martelcorp com Tel 603 434 8179 800 821 0023 Fax 603 434 1653 Martel Electronics PO Box 770 1F Commons Drive Londonderry NH 03053 1 2 Standard Equipment Check to see if your calibrator is complete It should include MC1000 Calibrator Instruction Manual Test Leads Rubber...

Страница 4: ...ols Some or all of these sym bols may be used on the instrument or in this manual Symbol Description AC Alternating Current AC DC Battery CE Complies with European Union Directives DC Double Insulated Electric Shock Fuse PE Ground Hot Surface Burn Hazard Read the User s Manual Important Information ...

Страница 5: ...ible electric shock or personal injury Do not apply more than the rated voltage See specifications for supported ranges Follow all equipment safety procedures Never touch the probe to a voltage source when the test leads are plugged into the cur rent terminals Do not use the calibrator if it is damaged Before you use the calibrator inspect the case Look for cracks or missing plastic Pay particular...

Страница 6: ...ay be impaired When in doubt have the calibrator serviced Do not operate the calibrator around explo sive gas vapor or dust When using a pressure module make sure the process pressure line is shut off and depressurized before you connect it or dis connect it from the pressure module Disconnect test leads before changing to another measure or source function When servicing the calibrator use only s...

Страница 7: ...n To avoid mechanically damaging the pressure module never apply more than 10 ft lb of torque between the pressure module fittings or between the fittings an the body of the module To avoid damaging the pressure module from overpressure never apply pressure above the rated maximum printed on the module To avoid damaging the pressure module from corrosion use it only with specified materials Refer ...

Страница 8: ...h all the ranges for a chosen func tion Example If T C mode is selected the Range key tog gles through the ranges J K T E etc 0 9 keys These keys allow a user to enter an output value Example to output 20 mA select mA output and Press the 2 key then the 0 key followed by the ENTER key Arrow These keys allow small changes to be made to an out put value Press either the up or the down arrow key to s...

Страница 9: ...c Choose the desired setpoint storage location by pressing a key 1 9 d Enter a new value and repeat steps 1 thru 3 as needed up to 9 setpoints for each range can be stored 2 Recalling Setpoints a To recall a setpoint press shift fol lowed by the SPT key b You will be prompted to enter the number of the desired setpoint loca tion stored previously c Press the desired location number and the unit wi...

Страница 10: ...ts The procedure is as follows a Press Shift followed by Man b Using the arrow keys toggle up and down through the stored setpoints c To exit press CE or simply enter a new output value 5 Pressure Module Interface The MC1000 has the capability to inter face with a family of pressure modules available from Martel The procedure is as follows a Connect the pressure module to the 15 pin D connector on...

Страница 11: ...9 ...

Страница 12: ...ING When measuring high voltage be sure to use proper connections as shown in Figure 1 Failure to do so will cause serious damage to the calibrator B Measuring Low Voltage and Frequency 1 Select the desired mode Voltage or Frequency Use the Range key to select the proper range for the mode chosen 2 Connect the device under test as shown in Figure 2 Figure 1 Figure 2 WARNING Do not exceed 20 VDC at...

Страница 13: ...n in Figure 3 3 Current can either be measured directly in mA or as a percentage such that 4 to 20 mA corresponds to 0 to 100 D Sourcing Current 1 Select the mA output mode on the calibrator 2 Connect device under test as shown in Figure 4 3 Enter the value of desired output current Note If the loop is open OL will appear in the display Figure 3 Figure 4 ...

Страница 14: ...peration mode volts ohms frequency 2 Connect device under test as shown 3 In the resistance or frequency modes use the Range key to choose the desired range for the mode you re operating in 4 The MC1000 is capable of driving up to 1 mA on the Voltage and Frequency ranges and is able to handle up to a 3 mA excitation on the Resistance Simulation Range Exceeding these limits will result in a warning...

Страница 15: ...he MC1000 for the 3 types of measurements 1 Choose the desired RTD ohms range by first pressing the TC RTD key to get into the RTD mode Then use the Range key to select the desired range within the RTD mode H Measuring Temperature Using a Thermocouple Figure 8 G Sourcing a Thermocouple Signal TC wire must be used to achieve an accurate calibration Figure 7 Note For best accuracy allow a 10 minute ...

Страница 16: ...icate 2 3 or 4W in the upper left corner of the LCD To set the desired wire configuration use the Up Down arrow keys to toggle through the 2 3 and 4 wire modes Measuring a 2 Wire RTD or Using the Continuity Function Measuring a 3 Wire RTD Measuring a 4 Wire RTD Figure 9 ...

Страница 17: ...nce the cable is attached set the communica tions program settings as follows Baud Rate 9600 Data Bits 8 Stop Bits 1 Parity None Flow Control Xon Xoff J Sourcing Resistance Into a RTD Transmitter 1 As described previously in section F the MC1000 can source resistance in a RTD Transmitter or measuring device In many cases the unit under test will require a 3 or 4 wire connection to achieve best acc...

Страница 18: ... on Communications 4 Click on HyperTerminal 5 Next appears a screen labeled CONNEC TION DESCRIPTION In the box titled Name enter a name for your program settings example MC Connection In a box titled Icon click on the icon of your choice Click on the OK box to accept these entries 6 Next appears a screen labeled CONNECT TO In the box titled Connect Using select the serial port that corresponds to ...

Страница 19: ...priate instruction manual The computer screen should now be displaying data being sent directly from the MC1000 calibrator Note You may wish to save these settings when exiting HyperTerminal If so click on the OK box when prompted Do you want to save X where X corresponds to the name entered in Step 5 Computer Controlled Operation The MC1000 calibrator can be operated remote ly via a computer or t...

Страница 20: ...t Thermocouple source default Type J use S command to select sensor type C Selects Centigrade T C RTD F Selects Fahrenheit T C RTD R RTD measurement mode default Pt100 385 use S command to select sensor type r RTD measurement mode default Pt100 385 use S command to select sensor type 0 9 Enter a source value using ascii characters 0 1 2 9 terminated by CR carriage CR return D Single Broadcast of m...

Страница 21: ...ted specifica tions for a minimum of one year Given this annual re calibration is required for best per formance See the customer service section 7 to contact Martel for re calibration information C Field Replacement Fuse MC1000 comes with a field replaceable mini fuse This fuse protects the MC1000 inputs and outputs If an overload condition occurs and a blown fuse is suspected perform the followi...

Страница 22: ...acy T C Type J 3 C 10 µV 0 4 C total error RTD PT100 1 C 075 Ω 0 3 C total error Ohms 400 0 1 Ω Ohms 3200 1 0 Ω mA Compliance Up to 1000 Ω load Voltage Drive Capability 1 mA RTD IEX range 0 01 mA to 3 mA RTD Frequency Response 10 mS works with all pulsed XMTR s Oper Temp 10 C to 50 C Storage Temp 40 C to 60 C Loop Power 4 AA alkaline batteries 25 hours typical operating time Size 7 5 x 4 x 1 5 3 R...

Страница 23: ... ohm Ohms Read high 400 0 1500 0 0 5 ohm 1500 1 3200 0 1 0 ohm Range Min Max Excitation Accuracy Current Ohms Source low 5 00 400 00 0 1 to 0 5 mA 0 15 ohm 5 00 400 00 0 5 to 3 mA 0 1 ohm Ohms Source high 400 0 1500 0 0 05 to 0 8 mA 0 5 ohm 1500 0 3200 0 0 05 to 0 4 mA 1 0 ohm Thermocouple Read and Source All errors included Range Min Max Accuracy J Thermocouple 200 0 0 0 0 6 C 0 0 1200 0 0 4 C K ...

Страница 24: ... mV Read Source 10 00 75 00 0 015 02 mV RTD Read and Source Range Min Max Accuracy Ni120 672 80 0 260 0 0 2 C Pt100 385 200 0 800 0 0 33 C Pt100 3926 200 0 630 0 0 3 C Pt100 3916 200 0 630 0 0 3 C Pt200 385 200 0 630 0 0 8 C Pt500 385 200 0 500 0 0 3 C 500 0 630 0 0 4 C Pt1000 385 200 0 100 0 0 2 C 100 0 630 0 0 3 C Cu10 100 0 250 0 2 2 C Cu50 180 0 200 0 0 5 C Cu100 180 0 200 0 0 3 C YSI400 15 00...

Страница 25: ...st be obtained from our Customer Service Department This number must be indi cated on the return package as notice to our Receiving Department to accept the shipment Any package not so marked will not be accept ed and will be returned to the shipper Martel will not be responsible for damage as a result of poor return packaging Out of warranty repairs and recalibration will be subject to spe cific ...

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Страница 28: ...Rev F 6 07 0219041 www martelcalibrators com e mail sales martelcorp com Tel 603 434 8179 800 821 0023 Fax 603 434 1653 Martel Electronics PO Box 770 1F Commons Drive Londonderry NH 03053 ...

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