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1. Introduction

1.1 miniCHEM-Temp Illustration

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Summary of Contents for miniCHEM-Temp

Page 1: ...t a glance 2 Introduction The introduction has a diagram and explanation of the display and controls of the miniCHEM Temp It also contains a full listing of all of the items that you should have received with the unit Please take the time to read this section as it explains some of items that are mentioned in subsequent sections 3 Main Section The main section of the handbook provides complete det...

Page 2: ...Page 1 Web Site www tps com au ...

Page 3: ...ltage Output 13 3 7 Calibrating the 4 to 20mA Output 14 4 Calibration 15 4 1 Calibration Procedure 15 4 2 Calibration Notes 15 5 Process Monitoring 16 6 Automatic Dosing 16 7 Manual Dosing 16 8 Fuse Replacement 16 9 Troubleshooting 17 9 1 Instrument Function Troubleshooting 17 9 2 Temperature Troubleshooting 18 10 Warranty 19 11 Appendices 21 11 1 Terminal connections when 12V DC option is fitted ...

Page 4: ...Page 3 1 Introduction 1 1 miniCHEM Temp Illustration ...

Page 5: ...s control to calibrate the miniCHEM Temp sensor See section 4 1 Span This control is not required for the miniCHEM Temp Function Switch The Function Switch is used to select the mode of operation See section 2 Display Window The miniCHEM Temp has a large easy to read LCD display The units of measurement are clearly shown in the window beneath the display Æ Terminal Cover The terminal cover provide...

Page 6: ...140 2 miniCHEM Temp Handbook 130050 Options that may have been ordered with your miniCHEM Temp Temperature Sensors 1 Dip type Temperature sensor 5m 114200 2 Screw in type Temperature sensor 5m 114201 3 Adaptor to fit screw in sensor into 40mm 111305 PVC Pipe Instrument options 1 Relay control output 130342 2 4 20mA loop powered remote LCD 130080 3 12V DC Power Option 130072 ...

Page 7: ...ote 4 20mA loop powered display available Analogue Outputs 4 to 20mA 500 Ohms max loop resistance 0 to 1 V DC min load 1000 Ω 0 to 10 V DC optional min load 1000 Ω Control Output optional Clean contact changeover relay rated to 2A at 240V AC Isolation Galvanic isolation of sensor input Power 240V AC 50 60Hz 120V AC optional 12V DC also optional Part No 130072 Dimensions 172 x 160 x 71 mm Mass Inst...

Page 8: ...o inhibit the Alarm LED and optional output relay action Select this mode for calibration or when automatic control is not required 3 AUTO Switch to AUTO to enable the Alarm LED and optional relay output These will be activated when the Temperature is outside the limit value See section 3 5 4 MANUAL Switch to MANUAL to manually activate the Temperature control device when the optional relay output...

Page 9: ...n and Set up 3 1 Connection and Configuration Diagram The diagram below is provided as a reference for the terminal connections configuration jumpers and user adjustable trimmers that are discussed throughout this section ...

Page 10: ...ions the sensor should always be mounted as close as possible to the control point ie heater or cooling tower etc This will cause the sensor to detect the change in Temperature immediately and shut automatic control off until mixing has taken place For in line mounting it is important that Temperature control is upstream Additionally the line can be run through a mixing chamber such as a large dru...

Page 11: ... of current or voltage output Customer defined 9 No Connection 10 Normally Closed contact of optional relay output Customer defined 11 Common contact of optional relay output Customer defined 12 Normally Open contact of optional relay output Customer defined 13 240V AC Active input Brown standard colour 14 Duplicate 240V AC Active contact See section 11 1 Brown standard colour 15 240V AC Earth inp...

Page 12: ...ayed Note that the Alarm LED and optional output relay are now disabled The 4 20mA or 0 1V outputs are still active and proportional to displayed value 2 Adjust the LIMIT control until the display reads the desired trip point value 3 5 2 Setting the alarm control direction The control limit can be set as a too high or too low trip point using the Lo Hi Control jumpers in the terminal area The mini...

Page 13: ...g a buffer between the points at which the output is switched ON and OFF This feature can significantly increase the life of heaters pumps etc The factory set hysteresis is approximately 1 0 O C as in the example above The hysteresis can be increased to as high as 4 0 O C with the HYSTERESIS trimmer in the terminal area Turning the HYSTERESIS clockwise increases the hysteresis and turning it anti ...

Page 14: ... for 4 to 20 mA output are C V C V C The jumper settings for 0 to 1V DC output are C V C V C Note that the spare jumper has been fitted to a spare Current Voltage Output jumper pin This is a safe place to keep it in case the miniCHEM Temp needs to be reset to current output in the future 0 to 10V DC output is available as a factory fitted option The jumper settings are the same as detailed above b...

Page 15: ...tal Milliamp Meter between terminals 7 and 8 2 Switch the miniCHEM Temp to SET LIMIT 3 Adjust the LIMIT control until the display reads 00 0 4 Adjust the ZERO 4mA trimmer in the terminal area until the Digital Milliamp Meter reads 4 mA 5 Adjust the LIMIT control until the display reads 100 0 6 Adjust the SPAN 20mA trimmer in the terminal area until the Digital Milliamp Meter reads 20 mA In the eve...

Page 16: ...ide a good quality mercury thermometer Stir the probe and the thermometer gently to ensure an even temperature throughout the beaker 5 When the Temperature reading has stabilised adjust the ZERO control until the miniCHEM Temp displays the same temperature as the mercury thermometer 6 The miniCHEM Temp is now calibrated and ready for Temperature measurements 4 2 Calibration Notes 1 The miniCHEM Te...

Page 17: ...utput is fitted NOTE The output will be ON continuously while the function switch is set to MANUAL It will not be switched OFF again until the switch is set back to one of the other modes 8 Fuse Replacement If the current drain from any device connected to the output relay exceeds 1 Amp the output protection fuse will blow To replace the fuse 1 SWITCH THE miniCHEM Temp OFF 2 Pull out the black fus...

Page 18: ...section 3 5 2 Return unit to factory to have relay output fitted part no 130342 Check and adjust the HYSTERESIS trimmer see section 3 5 3 If in doubt set this to minimum level Check and replace fuse if necessary see section 8 Return to TPS for repair Incorrect analogue output signal 1 Current Voltage Output jumpers incorrectly set for required output 2 4 20mA loop resistance too high 3 Load on 0 1...

Page 19: ...ulty Check sensor connections section 3 4 Replace sensor Meter displays the same Temperature reading regardless of solution temperature Meter is switched to SET LIMIT Switch meter to STANDBY for process monitoring or AUTO for monitoring plus automatic control Temperature inaccurate and cannot be calibrated Faulty temperature sensor Return sensor to factory for replace or replace sensor ...

Page 20: ...he registration section returned to TPS Pty Ltd within 7 days No claims will be recognised without the original guarantee card or other proof of purchase This warranty becomes invalid if modifications or repairs are attempted by unauthorised persons or the serial number is missing PROCEDURE FOR SERVICE If you feel that this equipment is in need of repair please re read the manual Sometimes instrum...

Page 21: ...aired and returned to you by air express where possible For out of warranty units a repair cost will be calculated from parts and labor costs If payment is not received for the additional charges within 30 days or if you decline to have the equipment repaired the complete unit will be returned to you freight paid not repaired For full account customers the repair charges will be debited to your ac...

Page 22: ...ned 8 ve of current or voltage output Customer defined 9 No Connection 10 Normally Closed contact of optional relay output Customer defined 11 Common contact of optional relay output Customer defined 12 Normally Open contact of optional relay output Customer defined 13 No connection for 12V DC version 14 Negative of 12V DC Input Customer defined 15 No connection for 12V DC version 16 No connection...

Page 23: ...Page 22 11 2 Relay Output Wiring Examples for mains powered unit The diagrams below provide some examples of wiring the optional relay output for standard mains powered miniCHEM Temp units ...

Page 24: ...Page 23 11 3 Relay Output Wiring Examples for 12V DC powered units The diagrams below provide some examples of wiring the optional relay output for miniCHEM Temp units with the 12V DC power option ...

Page 25: ...Page 24 11 4 Drilling Template The template below is for the three mounting positions for the miniCHEM enclosure This template is actual size and can be photocopied or removed as required ...

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