8500 Series Low Thermal Scanner Operation Manual Version 1.
8500 LOW THERMAL SCANNER OPERATION MANUAL 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.
8500 LOW THERMAL SCANNER OPERATION MANUAL TABLE OF CONTENTS GUARANTEE AND SERVICE................................................................................................................2 8500 LOW THERMAL SCANNER .........................................................................................................4 MAIN FEATURES...................................................................................................................................5 FRONT PANEL ..........................
8500 LOW THERMAL SCANNER OPERATION MANUAL 8500 Low Thermal Scanner The model 8500 Low Thermal Scanner provides a low thermal 4 terminal switching system making it ideal for 4 wire resistance measurements in resistance thermometry and for resistance comparisons. The use of ultra low thermal 4mm terminals make connecting the scanner to UUT's easy, allowing the measurement system to be quickly re-configured.
8500 LOW THERMAL SCANNER OPERATION MANUAL Main Features Number of channels Switching Maximum Voltage Maximum Current Connection Thermal EMF Switch Resistance Relay Type Interface Mains Voltage 10 4 Contact Kelvin switching : 2 Voltage : 2 Current 200V 1A Front panel inputs 4mm terminal low thermal gold on copper Typically less than 150nV Less than 0.
8500 LOW THERMAL SCANNER OPERATION MANUAL Front Panel Front Panel Terminals Channel Indicator • Voltage Positive input • Voltage Negative input • Current Positive input • Current Negative input • Guard Terminal (to case) LED Active Channel Indicator Channel Select Button Channel select – selects next channel (sequential) (Up) Channel Select Button Channel select – selects previous channel (sequential) (Down) Note : Press CHANNEL UP + CHANNEL DOWN buttons together to switch off ALL channels.
500 LOW THERMAL SCANNER OPERATION MANUAL Rear Panel Rear Panel Terminals RS232 Interface 15V DC Supply Transmille Ltd.
8500 LOW THERMAL SCANNER OPERATION MANUAL Operating Notes This section details operational considerations for the 8500 low thermal scanner. Follow these instructions when operating the scanner. CAUTION Do not apply voltages above the maximum rating of 200V. Excessive voltage can cause permanent damage. The specifications for connections with CURRENT and VOLTAGE (SENSE) require four wire connections as standard. Use of these terminal posts are detailed in the section below.
8500 LOW THERMAL SCANNER OPERATION MANUAL Connection Recommendations For optimum results use two sets of low thermal test leads which are designed to reduce errors caused by thermal EMFs. Example Connection : Resistance Standard Connect one or more resistance standards to the scanner channel inputs using low thermal connections. Use the front panel or remote commands to switch between the resistance standards and measure values using rear panel output terminals.
8500 LOW THERMAL SCANNER OPERATION MANUAL Channel Select Modes Manual Channel Select To manually select a range, use the front panel CHANNEL UP and CHANNEL DN buttons. This will select channels from 1 to 10 sequentially. Note : Press CHANNEL UP + CHANNEL DOWN buttons together to switch off ALL channels. Unit starts up with no channels selected. Press CHANNEL UP to select channel 1 The next press of CHANNEL UP will select channel 2, and so on.
8500 LOW THERMAL SCANNER OPERATION MANUAL Remote Channel Select The 8500 Scanner can be fully controlled via the RS232 interface. The interface uses the standard 9 pin PC connector and a standard serial lead.
8500 LOW THERMAL SCANNER OPERATION MANUAL Specifications Inputs Outputs Switching Maximum Voltage Maximum Current Connection Thermal EMF Switch Resistance Relay Type Interface Power Transmille Ltd. 10 Channels (4-terminal) 2 Voltage : 2 Current Low Thermal 4 Contact Kelvin switching : 2 Voltage : 2 Current 200V 1A Front / Rear panel inputs 4mm terminal low thermal gold on copper Typically less than 150nV Less than 0.
8500 LOW THERMAL SCANNER OPERATION MANUAL Care & Maintenance The only maintenance instructions for the 8500 precision resistance reference is periodic cleaning. See below for details on the cleaning procedure and precautions for handling. Cleaning the 8500 To keep the external enclosure of the 8500 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.