Transmille 1000 Calibration Guide

1000 Series

Precision Multi Product Calibrator

Calibration Manual

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1000 SERIES CALIBRATION MANUAL

TABLE OF CONTENTS

PREPARING FOR CALIBRATION ................................................................................................................ 3

INTRODUCTION .................................................................................................................................................. 3

EQUIPMENT REQUIRED ...................................................................................................................................... 3

OPTIONAL EQUIPMENT ...................................................................................................................................... 4

CALIBRATION PASSWORD ........................................................................................................................... 5

CHANGING THE CALIBRATION PASSWORD ........................................................................................................ 5

SET NEW PASSWORD ......................................................................................................................................... 7

MANUAL CALIBRATION ................................................................................................................................ 9

ENTERING CALIBRATION MODE ...................................................................................................................... 10

EXITING CALIBRATION MODE ......................................................................................................................... 12

CALIBRATION PARAMETERS .................................................................................................................... 13

CONNECTIONS ............................................................................................................................................... 14

CALIBRATION OF RANGES ........................................................................................................................ 15

D.C. VOLTAGE ................................................................................................................................................ 15

D.C. CURRENT ................................................................................................................................................ 19

A.C. VOLTAGE ................................................................................................................................................ 24

A.C. CURRENT ................................................................................................................................................ 28

PASSIVE Ω ....................................................................................................................................................... 33

ACTIVE Ω ........................................................................................................................................................ 36

CAPACITANCE ................................................................................................................................................. 40

A/D INPUT ....................................................................................................................................................... 43

CONTINUITY RESISTANCE CURRENT ............................................................................................................... 46

THERMOCOUPLE .............................................................................................................................................. 48

VERIFICATION OF RANGES ....................................................................................................................... 51

DC VOLTAGE .................................................................................................................................................. 51

AC VOLTAGE .................................................................................................................................................. 54

DC CURRENT .................................................................................................................................................. 56

AC CURRENT .................................................................................................................................................. 58

PASSIVE RESISTANCE ...................................................................................................................................... 60

ACTIVE RESISTANCE ....................................................................................................................................... 61

CAPACITANCE (MEASURED AT 1 KHZ) ............................................................................................................ 63

FREQUENCY OUTPUT ....................................................................................................................................... 64

A/D INPUT ....................................................................................................................................................... 65

THERMOCOUPLE COLD JUNCTION MEASUREMENT .......................................................................................... 66

TEMPERATURE SIMULATION............................................................................................................................ 66

SIMULATED PRT ............................................................................................................................................. 70

CONTINUITY RESISTANCE (OPTIONAL) ............................................................................................................ 71

CONTINUITY CURRENT (OPTIONAL) ................................................................................................................ 72

INSULATION TEST FUNCTION (OPTIONAL) ....................................................................................................... 73

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1000 SERIES CALIBRATION MANUAL

Preparing For Calibration

Introduction

The recommended calibration period for the 1000 series calibrators is 12 months. Extended specifications for 6, 12 and 24 month re-calibration periods are available from the 1000 series extended specifications.

Calibration can be achieved using one of two methods:

1. Manual calibration via the front panel controls.

2. Automated closed-loop calibration using ProCal calibration software.

In both instances the calibrator should be switched on and allowed to warm up for

the required period as stated in the operator’s manual (see “Powering up the

calibrator”, p15 of the 100 series operation manual). Calibration should be performed

in a stable environment where the temperature is stable to within +/- 1ºC during the calibration.

Equipment Required

To calibrate the 1000 series calibrators the following equipment is required:

1. High Accuracy precision Multimeter (example Transmille 8081 / Agilent 3458A opt 002 / Fluke 8508A)

2. LCR Bridge (example Agilent)

3. DC Voltage Source (example Transmille 3000 series multiproduct calibrator,

Fluke 55xx series multiproduct calibrator)

4. High Accuracy Frequency Counter / GPS Frequency Reference / Off-Air Frequency Reference

Between these four pieces of equipment it is possible to calibrate all basic functions of the 1000 series calibrators. For units fitted with additional options additional equipment is required.

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1000 SERIES CALIBRATION MANUAL

Optional Equipment

To perform a full calibration of a 1000 series multiproduct calibrator additional equipment may be required dependent upon the capabilities of the multimeter being used.

For multimeters such as the Agilent 3458A with limited maximum current, a selection of current shunts are required. These current shunts should be suitable for both DC and AC current up to. Suggested current shunt values are listed below, along with the current range they will be used for :

0.1 Ohm – 1A to 10A AC/DC 1 Ohm – 100 mA to 1A AC/DC 10 Ohm – 10.2mA to 100mA AC/DC 100 Ohm –1.02mA to 10mA AC/DC

These shunts are also used for multimeters with insufficient current accuracy for low current calibration.

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Calibration Password

Changing the Calibration Password

To navigate to the ‘Calibration Password’ screen follow the procedure in the section: ‘Manual Calibration’ to step 3 where the following screen appears:

1. Press the SETUP soft key.

2. Use the ‘Digital Control’ or the ‘Arrow Keys’ to highlight ‘Password’ and then press SELECT soft key.

3. Press the SELECT soft key.

4. Enter the calibration password (default 0324).

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The following screen is displayed for approximately 2 seconds:

and then reverts back to:

The instrument is now ready to be calibrated and the password can be changed.

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1 0 0

Calibration Password

CANCEL SELECT

Enter Set End Cal

0.000mV

Standby

SETUP NEXT

100mV DC

INFOPROCEDURE

Enter New Cal Password :

Set New Password

To change the password, complete the following procedure:

1. Press the SETUP soft key.

2. Use the ‘Digital Control’ or the ‘Arrow Keys’ to highlight ‘Password’ and then press SELECT soft key.

3. Highlight ‘Set’ and then press the SELECT soft key.

4. ‘Enter New Cal Password’ using function control keys, followed by the ENTER key e.g. 1000.

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Password Set

The following screen is displayed for approximately 2 seconds:

and then reverts to:

The password has now been changed.

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Function Control

1. Adjusts calibrator output

2. Enter ‘cal factors’

Digital Control

3. Adjusts calibration factors

Output On key – Standby key – switches output off

Range keys

1. Changes calibration reference point on each range

Soft and Arrow keys

2. Change parameter and range (arrow)

Manual Calibration

Manual Calibration is achieved using the following front panel controls:

1. A digital control scroll wheel

2. Function controls

3. Soft and Arrow keys

4. Range up and Down keys

5. Output On and Standby keys

1. Adjusts calibrator output

2. Selects calibrator ranges

switches output on

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1. Select parameter, range, store, undo & exit – (soft)

1000 SERIES CALIBRATION MANUAL

0 3 2

Select Option

CANCEL SELECT

Beeper Password Adapters Range Hold Calibrate

ENTER

Entering Calibration Mode

To navigate to the calibration control screen, complete the following procedure:

1. Select SETUP using the soft key.

2. Select CALIBRATE using the soft key.

3. ‘Enter Cal Password’ using function control keys.

(0324 is the default password) followed by

The following screen is displayed for approximately 2 seconds:

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Password Incorrect

and then reverts to:

The instrument is now ready to be calibrated.

Should the password be entered incorrectly, the screen will display the following message for approximately 2 seconds:

Select SETUP using the soft key to navigate back to ‘Enter Cal Password’ screen and re-enter the password.

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Calibration Password

CANCEL SELECT

Enter Set End Cal

Exiting Calibration Mode

After calibration of the 1000 series is complete the calibration program should be ended to avoid any unauthorised or mistaken adjustment of the calibrator. The following procedure should be completed.

1. Press the SETUP soft key.

2. Use the ‘Digital Control’ or the ‘Arrow Keys’ to highlight ‘Password’ and then press

SELECT soft key.

3. Highlight ‘End Cal’ and then press SELECT soft key.

The calibrator then returns to the normal screen.

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Select Option

CANCEL SELECT

Beeper Password Adapters Range Hold Calibrate

Select Function

CANCEL SELECT

DC Volts

Passive Ω

DC Amps AC Volts

AC Amps

Active Ω

Capacit. A/D Input

ThermoC

Ins Test

Cont I

Calibration Parameters

With the calibration password entered the different parameters of the instrument can be calibrated. To enter a different parameter, complete the following procedure:

1. Enter the setup menu and use the ‘Digital Control’ or the ‘Arrow Keys’ to select ‘Calibrate’.

2. Highlight the required parameter e.g. ‘DC Volts’ and then press the SELECT soft key.

Depending upon the model and options fitted the available functions will vary.

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DC & AC Voltage, Passive Continuity, Capacitance

DC & AC Current up to and including the 1A range

DC & AC Current up to and including the 10A range

Simulated PRT

Thermocouple Output

A/D Input Pin 9 - Input

Connections

The output of the 1000 series calibrator should be connected to the precision multimeter as below:

& Active , Frequency,

Pin 7 – ground

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Output voltage terminals

Select Option

CANCEL SELECT

Beeper Password Adapters Range Hold Calibrate

Select Function

CANCEL SELECT

DC Volts

Passive Ω

DC Amps AC Volts

AC Amps

Active Ω

Capacit. A/D Input

ThermoC

Ins Test

Cont I

Calibration of Ranges

D.C. Voltage

To calibrate the D.C. Voltage parameter, complete the procedure as follows:

1. Enter the setup menu and use the ‘Digital Control’ or the ‘Arrow Keys’ to select ‘Calibrate’.

2. Highlight the required parameter; ‘DC Volts’ for example, and then press the

SELECT soft key.

3. Connect the calibrator output voltage terminals to the precision Multimeter. Ensure that the Multimeter has been zeroed as a system by shorting out the leads and pressing the null button.

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SHIFT

OUTPUT

0 • 0 0 0 2 8

ENTER

Select Range

CANCEL SELECT

100 mV DC 1 kV DC

1 V DC 10 V DC 100 V DC

20.000mV

Standby

100mV DC

Zero Calibration

100mV DC

PROCEDURE SETUP INFO

4. Select required range using the ‘Digital Control’ or the ‘Arrow Keys’ and press

the SELECT soft key.

5. Ensure the calibration point is set to ‘Zero Calibration’. Use the ‘range up’ and ‘range down’ keys to change the calibration point if required.

6. Press and measure the output ‘Zero Calibration’.

7. To adjust the output, type in the measured value using the keyboard, followed

by the ‘ENTER’ key i.e. 0.00028mV.

8. The output can also be adjusted by moving the ‘cursor’ to the required digit

and adjusting the output using the up and down arrow keys or the digital control.

9. The key will illuminate to indicate that a change has been made to the calibration of the instrument, however has not yet been stored.

10. To undo the adjustment before storing the changes, press the UNDO soft key. This will remove any changes that have been made to the output of the

calibrator.

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SHIFT

NOTE: All calibration points can be adjusted prior to storing the calibration factors. However, if the calibration routine is ended before the STORE button

has been pressed, due to a power failure for example, the new calibration factors will not be saved.

Storing ....

Calibration Stored

11. Once the output has been adjusted to within specification, the changes can be stored to long term memory. To store the changes permanently, press the STORE soft key.

The following 2 screens are displayed briefly to confirm that the calibration factors have been saved.

After displaying these messages, the shift key will also cease to be illuminated:

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100.000mV

Standby

100mV DC

Positive Full Scale

100mV DC

PROCEDURE SETUP INFO

NOTE: The ‘Zero Calibration’ points for both the 200V DC and 1kV DC Ranges do not occur at 0V. They take place at 5V and 50V respectively.

-100.000mV

Standby

100mV DC

Negative Full Scale

100mV DC

PROCEDURE SETUP INFO

12. Using the Range up / Range down’ keys, change the output to ‘Positive Full Scale’

13. Measure the output, and adjust as required using the process described in steps 6 – 10.

14. Use the Range up / Range down keys to change the calibration point to ‘Negative Full Scale’.

15. Measure the output, and adjust as required using the process described in steps 6 – 10.

16. When calibration of this range is complete press the RANGE soft key.

17. To continue adjusting other ranges in the DC Voltage function, select ‘DC

Volts’ and select the required range.

18. All DC volts ranges are calibrated in the same manner.

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Select Function

CANCEL SELECT

DC Volts

Passive Ω

DC Amps AC Volts

AC Amps

Active Ω

Capacit. A/D Input

ThermoC

Ins Test

Cont I

Select Range

CANCEL SELECT

100 µA DC

1 A DC

1 mA DC 10 mA DC 100 mA DC 10 A DC

20.000mV

Standby

100µA DC

Zero Calibration

100µA DC

PROCEDURE SETUP INFO

D.C. Current

To calibrate the D.C. Current parameter, complete the procedure as follows:

1. Enter the setup menu and use the ‘Digital Control’ or the ‘Arrow Keys’ to select ‘Calibrate’.

2. Highlight the required parameter ‘DC Amps’ and then press SELECT soft key.

3. Highlight the required range e.g. ‘100µA’ and then press SELECT soft key.

4. The Calibrator will now change to the 100µA AC range. Use the Range Up /

Range Down keys to select the ‘Zero Calibration’ adjustment point.

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OUTPUT

Low output terminals

High current

SHIFT

NOTE: Ensure that the correct terminals / current shunts are used for the various current outputs. The 1000 calibrators can output up to 10A DC current, which can blow the fuse / cause damage if the incorrect input is used.

0 . 0 0 0 2 8

ENTER

5. Connect the calibrator output voltage terminals to the precision multimeter.

Ensure that the multimeter is in AC Current on the appropriate range.

current

6. Press and measure the output.

output

7. To adjust the output, type in the measured value using the keyboard, followed by the ‘ENTER’ key i.e. 0.00028uA.

8. The output can also be adjusted by moving the ‘cursor’ to the required digit and adjusting the output using the up / down arrows or the digital control.

9. The key will illuminate to indicate that a change has been made to the calibration of the instrument, however has not yet been stored.

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SHIFT

Storing ....

Calibration Stored

NOTE: All calibration points can be adjusted prior to storing the calibration factors. However, if the calibration routine is ended before the STORE button

has been pressed, due to a power failure for example, the new calibration factors will not be saved.

10. To undo the adjustment before storing the changes, press the UNDO soft key.

This will remove any changes that have been made to the output of the calibrator.

11. Measure and check the output again and then press STORE soft key.

The following 2 screens are displayed briefly to confirm that the calibration factors have been saved.

After displaying these messages, the shift key will also cease to be illuminated:

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100.000mV

Standby

100mV DC

Positive Full Scale

100mV DC

PROCEDURE SETUP INFO

-100.000mV

Standby

100µA DC

Negative Full Scale

100µA DC

PROCEDURE SETUP INFO

12. Use the ‘range up’ and ‘range down’ keys to change the calibration point to ‘Positive Full Scale’.

13. Measure the output as before; if necessary adjust as previously described above (steps 5-11).

14. Use the ‘range up’ and ‘range down’ keys to change the calibration point to ‘Negative Full Scale’.

15. Measure the output as before; if necessary adjust as previously described above (steps 5-11).

16. When calibration of this range is complete press the RANGE soft key. To continue adjusting other ranges in the DC Amps function, select ‘DC Amps’

and select the required range.

13. All D.C. current ranges are calibrated in the same manner.

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