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Summary of Contents for Time Electronics 7000
- Page 1 User Manual 7000 RTD Calibrator Version 1.3 11-23 Time Electronics Ltd Unit 5, TON Business Park, 2-8 Morley Road, Tonbridge, Kent, TN9 1RA, United Kingdom. T: +44 (0) 1732 355993 | F: +44 (0) 1732 350198 mail@timeelectronics.co.uk | www.timeelectronics.com...
- Page 2 All rights reserved. Nothing from this manual may be multiplied, or made public in any form or manner, either electronically or hard copy, without prior written consent from Time Electronics Ltd. This also applies to any schematics, drawings and diagrams contained herein.
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Page 3: Table Of Contents
Time Electronics 7000 RTD Calibrator User Manual Contents Introduction ............................ 4 Modes of Operation ..........................5 Technical Specifications ........................6 Front Panel Controls ........................7 Main Controls and Display ........................7 Button Operations ..........................8 Connections ........................... 9 2-wire ..............................9 3-wire .............................. -
Page 4: Introduction
If used with a certified probe the unit performs as a highly accurate thermometer. Readout is available in ºC; ºF and ºK. The 7000 is specifically designed to automate and to speed up the task of calibrating instrumentation used in the process control industry. Simply enter in engineering units (ºC, ºF or ºK) the desired zero and span values and the calibrator will automatically calculate... -
Page 5: Modes Of Operation
Temperature stability....Better than 0.0015 % per °C. Max/Min values......Logged automatically. The 7000 may be used with a calibrated and certified probe to produce a highly accurate thermometer. The performance can be further enhanced by programming the actual characteristic of the probe into the unit. -
Page 6: Technical Specifications
Time Electronics 7000 RTD Calibrator User Manual Technical Specifications Standard RTD types (non-standard RTD types user programmable) Alpha Temp range Accuracy Temp range Accuracy Element coefficient °C °C °F °F –200 to 250 0.05 –330 to 480 0.10 Pt100 DIN 0.003850... -
Page 7: Front Panel Controls
Time Electronics 7000 RTD Calibrator User Manual Front Panel Controls Main Controls and Display Input / Output Terminals Enter / Exit 3 / 4 Wire Selector Parameter Mode Measure / Source Selector RTD Type Input / Output Mode Indication Reading... -
Page 8: Button Operations
“Engineering Units” key. Max/Min In Measure Mode this key initialises the Max/Min function setting the starting values to the current measured value. Press Max/Min again, RTD or CFKΩ, the 7000 unit will disengage the Max/Min function. Ramp In Source Mode this key starts and stops the ramp function. -
Page 9: Connections
This in turn influences the choice of probe and type of connection. There are three commonly used wiring connection arrangements (2, 3 and 4 wire). The 7000 is designed to operate with all three wiring configurations. The top side button is used to select the appropriate connection type. -
Page 10: Basic Operation
User Manual Basic Operation Measurement Mode In the measure mode the 7000 is able to give a temperature read out in ºC, ºF and ºK from a variety of standard RTD probes. Establish the process instrument probe type input requirement •... -
Page 11: Source Mode
For process applications the type of probe and instrument is selected based on the required temperature range and resolution. In the Source Mode the 7000 unit can simulate the most commonly used probes to facilitate the calibration of RTD type input process instruments. - Page 12 Time Electronics 7000 RTD Calibrator User Manual To change the Zero & Span refer to Setup procedure Section 5.1. • To calibrate using the Manual Step Function refer to Section 4.3. • • To calibrate using the Ramp Function refer to Section 4.4.
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Page 13: Manual Step Function
Time Electronics 7000 RTD Calibrator User Manual Manual Step Function In the source mode a single key press will step the output though the five calibration points. This considerably speeds up the calibration process as it removes the time consuming and tedious process of having to manually adjust for each calibration point. -
Page 14: Ramp Function
Time Electronics 7000 RTD Calibrator User Manual Ramp Function In Source Mode the calibrator unit may be set to ramp from zero (0%) to span (100%) dwelling for a time period at the top and bottom limits. The following assumes that the calibrator has already been set up for the correct connection, source mode, RTD type and range as described in Source mode (Section 4.2) -
Page 15: Max/Min Log Function
Time Electronics 7000 RTD Calibrator User Manual Max/Min Log Function In Measure Mode the calibrator is able to log the measured maximum and minimum values. The following assumes that the calibrator has already been set up for the correct connection, measure mode, RTD type and range as described in Measure Mode Section 3.1. -
Page 16: Operating Parameters Setup Procedures
Time Electronics 7000 RTD Calibrator User Manual Operating Parameters Setup Procedures Element, Zero and Span Setup Procedure Normal calibration is carried out at five standard points. To set the 5 calibration points it is only necessary to set the zero (0%) and span (100%) limits. The calibrator will calculate the intermediate values (25, 50, and 75%) Select Source by pressing ‘B’... - Page 17 Time Electronics 7000 RTD Calibrator User Manual 5.1.2 Element Set-up Procedure Select Measure by releasing button ‘B’ to the OUT position • Select the correct Alpha curve, repeatedly pressing • Access the Parameter mode functions to set the RTD element value press •...
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Page 18: Ramp Rate And Dwell Time Setup Procedure
Time Electronics 7000 RTD Calibrator User Manual Ramp Rate and Dwell time Setup Procedure In the Source mode the calibrator unit may be set to ramp from zero (0%) to span (100%) dwelling for a time period at the limits. The Ramp rate (Ω/Sec) and Dwell period (secs) are programmable. -
Page 19: Battery And Re-Charging
24 hours operation. To facilitate recharging of the internal batteries, the 7000 calibrator incorporates a low voltage re-charger, this means that as well as the provided mains charger, any 12V DC power source may be used, including a fuse (250mA) protected car battery. -
Page 20: Maintenance And Troubleshooting
Time Electronics 7000 RTD Calibrator User Manual Maintenance and Troubleshooting Maintenance Front Panel Keypad and Connections The front panel should be cleaned by wiping with a damp cloth. Solvents must not be used to clean the panel as damage may result. -
Page 21: Recalibration
24bit sigma delta A/D. To limit the drift in the A/D there is a background calibration of the A/D at regular intervals. The operation of the 7000 is based on a ratio technique that compares the voltage across the unknown resistance to the voltage across an internal precision resistor. - Page 22 Time Electronics 7000 RTD Calibrator User Manual 8.1.3 Measure mode calibration 1. Allow the unit to warm up for 15 minutes before calibration. Ideally carry out the calibration at 23 ºC ± 5 ºC. It is recommended that the unit is fully charged prior to calibration.
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Page 23: Warranty And Servicing
Time Electronics’ total liability is limited to repair or replacement of the product. Note that if Time Electronics determine that the fault on a returned product has been caused by the user, we will contact the customer before proceeding with any repair. - Page 24 User Manual Returning Instruments Prior to returning your product please contact Time Electronics. We will issue a return merchandise authorization (RMA) number that is to accompany the goods returning. Further instructions will also be issued prior to shipment. When returning instruments, please ensure that they have been adequately packed, preferably in the original packing supplied.
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