Table of Contents
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Digital Temperature Indicator
1. As you unpack
2. Introduction
3. Operation
4. Features
5. Specifications
ESD 90 series
The Inside Stuff
6. Block Diagram
7. Schematic
8. Installation
9. Calibration
10. Look-up Table
Version - 11
11. Fault Diagnosis
12. Certificate
13. Ordering
14. Health Tips
15. Definitions
st
Date - 1 June 07
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Table of Contents
Related Manuals for ESD ESD 90 Series
Summary of Contents for ESD ESD 90 Series
- Page 1 Digital Temperature Indicator ESD 90 series The Inside Stuff 1. As you unpack 11. Fault Diagnosis 6. Block Diagram 2. Introduction 12. Certificate 7. Schematic 3. Operation 8. Installation 13. Ordering 4. Features 14. Health Tips 9. Calibration 5. Specifications 15.
- Page 2 As you unpack kindly ensure that 1. The material received is in good condition 2. You have received following material i) ESD - 90 series Digital Temperature Indicator as per your purchase order. ii) Mounting bracket pair. iii) This manual along with Warranty Certificate.
- Page 3 Temperature indication is thus one of the prime considerations in the process industry. The ESD 90 series is a Digital Temperature Indicator designed for fast and accurate measurement. It is designed using highly reliable electronic components. Process temperature is displayed directly in digits, giving better resolution compared to analog indicators.
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Page 4: Principle Of Operation
3. Principle of Operation The ESD 90 series is based on the principle of a high input impedance amplifier feeding an analog to digital convertor. The input signal generated by the transducer is fed to a sensor compensation circuit, where automatic ambient compensation in case of thermocouple and lead resistance compensation in case of Pt-100 is achieved. -
Page 5: Specifications
5. Specifications : ESD 9010 / ESD 9012 / ESD 9013 / ESD 9014 Model Ranges :Refer chart in Ordering Information Input : Thermocouples / Pt - 100 (3 wire sys) / 4 - 20 mA No. of Inputs : One Indication accuracy : +/- 0.5 % of FS +/- 1 digit... - Page 6 6. Block Diagram and Operation 6. Block Diagram and Operation ADC & ADC & Signal Signal Amplifier Amplifier Transducer Transducer Display Display Conditioner Conditioner Field Field 1. Temperature sensor: This block consists of either a Thermocouple, 1. Temperature sensor: This block consists of either a Thermocouple, .
- Page 7 7 Schematic and Connection Diagram for ESD 9010, ESD 9012, ESD 9013 & ESD 9014 ESD 9013 ESD 9010, ESD 9012 & ESD 9014 ESD-9013MB-R2 Display Module PCB ESD-9010DPM PCB ESD-9012DPM 7805 PCB ESD-DPMSML-R4 SPAN ZERO 4 pin connector Transformer...
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Page 8: Installation Procedure
8. Installation Procedure Also observe Instrumentation Health Tips chapter 14 75 mm The instrument should be mounted in a place where it is clearly visible and accessible. 1. Insert the instrument in a suitable cutout and fix it using the bracket pair provided on the sides. -
Page 9: Calibration Procedure
9. Calibration Procedure Warning: Procedure to be carried out strictly by technical persons. Follow instructions given in this manual. The instrument is calibrated at the factory using accurate calibrating equipment traceable to international standards. No recalibration should be required in normal course, however if the instrument requires recalibration, follow the procedure given below: Remove the cover of the instrument, by removing the fixing screws on the back side of the instrument. - Page 10 Feed ambient compensated mV corresponding to 80 % of FS. The display should show corresponding temperature. If the displayed temperature is incorrect turn the potentiometer marked 'SPAN' to display correct reading (CW to increase & CCW to decrease). eg.: Cr - Al thermocouple - Ambient compensated mV for 800 C at ambient temp 30 C will be mV corresp.
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Page 11: Look-Up Table
10. Look-up Table Temperature vs Sensor output Pt-100 Output in mV (Reference junction at 0 Degree Celcius) Temp. in resis. Fe - Ko Cr - Al Pt-Pt,13% Rh Pt-Pt,10% Rh Deg. C in ohms ( J ) ( K ) ( R ) ( S ) -100... -
Page 12: Fault Diagnosis
11. Fault Diagnosis Commonly observed problems and their likely causes. Please read Installation Procedure and Instrumentation health prior to this. Problem Likely cause No Indication Supply connections not as per connection diagram or no Supply voltage . Over range Sensor not connected Sensor not connected properly. -
Page 13: Warranty Certificate
This instrument is warranted against any manufacturing defects for a period of twelve months from the date of installation or eighteen months from the date of purchase, which ever is early. Digital Temperature Indicator ESD - 90 series Customer :__________________________ __________________________ ESD 9010 ESD 9012 Model No. -
Page 14: Ordering Information
8 - 0 to 2V DC 6 - 186 x 92 7 - 0 to1000 C 9 - Other 8 - 0 to1200 C 9 - Other Ordering eg. ESD 9013 - 1011 Digital Temp. Indicator ESD 90 No of inputs - One Power Display... - Page 15 14. Instrumentation Health Tips Taking care of your equipment is just as important as buying the best equipment. So simply take the following precautions and ensure a long, trouble-free service from your measurement and control system. Three wire system for connecting Pt-100 sensor to the instrument. Same area of cross section for all the three wires for Pt-100.
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Page 16: Important Definitions
15. Important Definitions Accuracy : Closeness of reading or indication of a measurement device to the actual value of the quantity being measured. Ambient Compensation : The design of an instrument such that the changes in the ambient temperature do not affect the readings of the instrument. Calibration : The process of adjusting an instrument or compiling a deviation chart so that it's reading can be correlated to the actual value being measured.
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