Transmille 3000RS User manual

LABORATORY REFERENCE STANDARDS
3000 PRECISION SERIES
Ü
3000RS
PRECISION RESISTANCE STANDARD

Version 1.40
September 2011
All product names are trademarks of their respective companies
3000RS Series
Precision Resistance Standard
Operation Manual

3000RS PRECISION RESISTANCE STANDARD
OPERATION MANUAL
Transmille Ltd. Page 2
Guarantee and Service
Transmille Ltd. guarantees this instrument to be free from defects under
normal use and service for a period of 1 years from purchase. This guarantee
applies only to the original purchaser and does not cover fuses, or any
instrument which, in Transmille’s opinion, has been modified, misused or
subjected to abnormal handling or operating conditions.
Transmille’s obligation under this guarantee is limited to replacement or
repair of an instrument which is returned to Transmille within the warranty
period. If Transmille determines that the fault has been caused by the
purchaser, Transmille will contact the purchaser before proceeding with any
repair.
To obtain repair under this guarantee the purchaser must send the instrument
in its original packaging (carriage prepaid) and a description of the fault to
Transmille at the address shown below. The instrument will be repaired at the
factory and returned to the purchaser, carriage prepaid.
Note :
TRANSMILLE ASSUMES NO RESPONSIBILITY FOR DAMAGE IN TRANSIT
THIS GUARANTEE IS THE PURCHASER’S SOLE AND EXCLUSIVE
GUARANTEE AND IS IN LEIU OF ANY OTHER GUARANTEE, EXPRESSED OR
IMPLIED. TRANSMILLE SHALL NOT BE LIABLE FOR ANY INCIDENTAL,
INDIRECT, SPECIAL OR CONSEQUENTIAL DAMAGES OR LOSS.
Transmille Ltd.
Unit 4, Select Business Centre
Lodge Road
Staplehurst
Kent
TN12 0QW
United Kingdom
Tel : [phone]
Fax : [phone]
EMail : [email protected]
Web : www.transmille.com

3000RS PRECISION RESISTANCE STANDARD
OPERATION MANUAL
Transmille Ltd. Page 3
TABLE OF CONTENTS
GUARANTEE AND SERVICE ...............................................................................................................2
3000RS PRECISION RESISTANCE STANDARD ................................................................................4
MAIN FEATURES ...................................................................................................................................4
DESIGN NOTES.....................................................................................................................................5
FEATURES............................................................................................................................................5
OPERATING NOTES...............................................................................................................................6
CONNECTING TO THE 3000RS ..............................................................................................................6
CONNECTION RECOMMENDATIONS ........................................................................................................7
SPECIFICATIONS ...................................................................................................................................9
CARE & MAINTENANCE.......................................................................................................................10

3000RS PRECISION RESISTANCE STANDARD
OPERATION MANUAL
Transmille Ltd. Page 4
3000RS Precision Resistance Standard
The 3000RS is a dedicated precision resistance standard. The standards do not
require temperature controlled air or an oil bath making the 3000RS suitable as
working standards, transfer standards as well as calibration support for the 3000
series range of multi product calibrators.
The stability and temperature co-efficients of the 3000RS is designed for a working
environment of 18-23°C and the standard is supplied complete with a calibration
certificate.
Main Features
 1 Ohms Reference (4 Wire connections)
 10 Ohm Reference (4 Wire connections)
 100 Ohm Reference (4 Wire connections)
 1 kOhm Reference (4 Wire connections)
 10 kOhm Reference (4 Wire connections)
 100 kOhm Reference (4 Wire connections)
 1 MegaOhm Reference (2 Wire connections)
 10 MegaOhm Reference (2 Wire connections)
 Separate Earth terminal to case ground

3000RS PRECISION RESISTANCE STANDARD
OPERATION MANUAL
Transmille Ltd. Page 5
Design Notes
The 3000RS is built using oil filled hermetically sealed ultra high precision foil
resistors from 1 Ohm to 100kOhm, and oil filled hermetically sealed ultra high
precision wire wound for the 1 /10 MOhm – no adjustable resistors are used
within the design of this reference.
Features
Functions of the terminal post connections :
3000RS Terminal Post Function
CURRENT HI Input for the current source from an ohmmeter
CURRENT LO Input for the current source from an ohmmeter
VOLTAGE HI Measurement point for a four-wire ohmmeter
VOLTAGE LO Measurement point for a four-wire ohmmeter
EARTH Connected to the case

3000RS PRECISION RESISTANCE STANDARD
OPERATION MANUAL
Transmille Ltd. Page 6
Label Reference Information
Model Number Model number reference for product
Serial Number Unique serial number for product
Operating Notes
This section details operational and environmental considerations for the 3000RS
precision resistance standard. Follow these instructions when operating or storing
the resistance standard.
Connecting to the 3000RS
CAUTION
Do not apply voltages above the maximum ratings detailed below. Excessive voltage can
cause permanent damage and affect the nominal resistance values of the reference.
VALUE MAXIMUM VOLTAGE RATING
1 Ohm 0.5V
10 Ohms 1V
100 Ohms 10V
1kOhm 10V
10kOhms 50V
100kOhms 100V
1MOhm 100V
10MOhm 300V

3000RS PRECISION RESISTANCE STANDARD
OPERATION MANUAL
Transmille Ltd. Page 7
The specifications for connections with CURRENT and VOLTAGE (SENSE) require four wire
connections as standard. Use these terminal posts are detailed in the section below.
For the case to act as a shield the EARTH terminal must be connected to earth ground or
instrument guard at some point in a calibration configuration. When connecting two or more
instruments with guards, the use of a single common earth point avoids earth loops.
Connection Recommendations
For optimum results use two sets of low thermal test leads which are designed to reduce
errors caused by thermal EMFs.
Fig. 1 : 4-Wire Connection Example

3000RS PRECISION RESISTANCE STANDARD
OPERATION MANUAL
Transmille Ltd. Page 8
Fig. 2 : 2-Wire Connection Example
Fig. 3 : Earth Connection Example

3000RS PRECISION RESISTANCE STANDARD
OPERATION MANUAL
Transmille Ltd. Page 9
Specifications
GENERAL SPECIFICATIONS
DESCRIPTION Precision decade resistance reference
OUTPUTS Decade resistances from 1 Ohm to 10MOhm –
separate terminals for each resistor
DIMENSIONS 45cm x 44cm x 9cm
PERFORMANCE SPECIFICATIONS
VALUE T/C
(ppm/°C)
STABILITY/YEAR
(ppm)
CONNECTION
1 Ohm 0.5 10 4-Wire
10 Ohms 0.6 5 4-Wire
100 Ohms 0.1 5 4-Wire
1kOhm 0.1 5 4-Wire
10kOhms 0.1 5 4-Wire
100kOhms 0.1 5 4-Wire
1MOhm 0.6 5 2-Wire
10MOhm 3 10 2-Wire

3000RS PRECISION RESISTANCE STANDARD
OPERATION MANUAL
Transmille Ltd. Page 10
Care & Maintenance
The only maintenance instructions for the 3000RS precision resistance reference is
periodic cleaning. See below for details on the cleaning procedure and precautions
for handling.
Cleaning the 30000RS
To keep the external enclosure of the 3000RS in good condition, clean the outer
case with a soft cloth. Do not use any liquids in cleaning the enclosure – removal of
surface dust is all that is recommended.
CAUTION
Do not use cleaning fluids or solvents for cleaning as these may damage the
enclosure and affect the plastic materials used in the precision resistance standard.
Handling Precautions
The 3000RS is designed for mechanical stability, but should not be subjected to
excessive shock or be dropped. Transportation is recommended using the original
packaging with avoidance of extreme changes of temperature.
Servicing Information
The 3000RS is provided certified from the factory, and uses high precision non-
adjustable resistance standards and are not user repairable. If the instrument is
damaged it should be returned to the factory for repair and recalibration.