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MER-MAN-14V01 (1002)

Copyright © 2014 Defi ne Instruments

20

-10 to 30V DC

This is a general purpose voltage measur-
ing range, typically used to measure bat-
tery voltages, power supply outputs etc.

0–300V DC

This higher voltage general purpose range
is typically used to measure battery volt-
ages, power supply outputs, etc.

CAUTION

Risk of electric shock

Exercise extreme caution when
handling high voltage inputs.

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Содержание Merlin

Страница 1: ...engineer ing unit and the result displayed on the large 0 8 4 digit super bright LED display Auto ranging is available to increase the dy namic range of viewable data The Merlin R2A adds two Form A 3 Amp relays for a variety of control and alarm functions and a 4 20mA active output for retransmission to PLCs and SCADA systems The unit boasts a 1 minute setup time using the Define Toolbox configura...

Страница 2: ...n Guidelines 12 5 3 Back Panel 13 5 4 Power Supply 13 5 5 Sensor Input 14 5 6 Analogue Output 14 5 7 Relay Outputs 14 5 8 User Input 14 6 Input Types 15 6 1 Thermocouple Input 15 6 2 RTD Input 16 6 3 NTC Input 17 6 4 Current Input 18 6 5 Voltage Input 19 6 6 Digital Pulse 21 6 7 Potentiometer Input 22 6 8 AC Current Sensor 23 7 Maintenance 24 7 1 Calibration 24 7 2 Troubleshooting 24 A Appendix A ...

Страница 3: ...your safety please read complete instructions prior to installation and operation of the Merlin In particular consult this manual in all cases where hazard symbols are marked on your Merlin unit in order to understand and avoid potential hazards The safety of any system incorporating this unit is the responsibility of the assembler of the system 1 SPECIFICATIONS 1 1 General meter specifications Po...

Страница 4: ...30ppm C typical Powered Self powered active Environmental conditions Operating humidity 5 85 RH max non condensing Operating temperature 10 to 50 C Storage temperature 20 to 60 C Altitude Up to 2 000m Certifications compliances EN 61326 1 Immunity to Industrial Locations Emission CISPR 11 Class A EN 61326 Safety requirements for electrical equip ment for measurement control and labora tory use EN ...

Страница 5: ...4V01 1002 Copyright 2014 Define Instruments 5 1 3 Case dimensions 95mm 3 74 107mm 4 21 91mm 3 58 80mm 3 15 minimum depth required behind panel 62mm 2 44 22mm 0 87 4mm 0 16 48 mm 1 89 44 mm 1 73 Connectors wiring ...

Страница 6: ...otches on the case E To achieve a proper seal tighten the Screws evenly until the unit sits firmly against the panel torque to approxi mately 70N cm 6 2 in lbs Do not over tighten the screws Panel Bezel Panel Gasket Mounting Clips Screws 92mm 5 3 62 02 45mm 5 1 77 02 Panel Cutout 2 2 Installation environment The Merlin should be installed in a location that does not exceed the maximum operat ing t...

Страница 7: ...ore continuing A Download the latest version of ToolBox from www defineinstruments com toolbox For ease of access we recommend saving the install file on your desktop If you cannot locate the install file check whether your browser has saved it in your Downloads folder B Extract the install file from the zip folder Right click on the zip folder and choose Extract All or extract the file using anot...

Страница 8: ...lt installation folder or select an alternative location by clicking Browse Click Next to continue G The install wizard will now install ToolBox Please wait This process usu ally takes 2 3 minutes but may take longer in some situations H When the installation has suc cessfully completed the fol lowing dialogue will appear Click Close to exit The installer will place an icon on your desktop for eas...

Страница 9: ...r your use if required this is often used for convenience in accessing USB ports located at the back of the computer USB Bridge Key Interface Cable USB Extension Cable If Necessary PC Connection INSTALL SOFTWARE FIRST Merlin Universal Indicator CAUTION Risk of damage to equipment or PC Ensure that all connections between the Bridge Key and your Merlin are secure Connect ing your indicator with cab...

Страница 10: ...figuration certificate A Double click the ToolBox icon on your desktop to launch the ToolBox program B With the Merlin connected to your computer s USB port see 4 1 click the green Connect button This will scan your computer s Com ports and automatically connect to your device Connection problems ToolBox will auto detect and connect to the Merlin when you click the Connect button If you have probl...

Страница 11: ...hanges made in this area will bring up the Apply Bar see below Connection Panel Connect disconnect buttons Connection status Live display Apply Bar Appears if you have made any changes in the Control Area ToolBox will not allow you to browse to a new tab in the Main Navigation with unap plied changes to your configuration Help Panel Diagrams explanations and helpful tips will automatically appear ...

Страница 12: ...t only meets CE noise require ments but surpasses them in many tests For full details and test results please see Appendix A However in some applications with less than optimum installations and large power switching the EMC performance of the Merlin can be further improved by A Installing the Merlin in an earthed metal enclosure This is particularly useful if the control box is mounted close to l...

Страница 13: ...signals or a flyback di ode for DC coils 5 3 Back panel The back panel of the Merlin may have up to five screw terminals A B C E F and one USB programming jack D Ports C E and F are installed on the R2A model only A Sensor input Pins 1 6 See Section 6 B Power supply Pins 7 8 See 5 4 C Analogue output Pins 9 10 See 5 6 D USB programming jack See Section 4 E User input Pins 11 12 See 5 8 F Relay out...

Страница 14: ...ariety of alarm or con trol functions 5 8 User input If installed See 5 3E pins 11 12 If your model includes Relay Outputs then a User Input is also pro vided This can be connected to a switch as shown to perform manual relay reset and latching functions These options are fully configurable using the ToolBox software CAUTION The User Input common is NOT isolated from the Sensor Input In order to p...

Страница 15: ...tion comp 10 to 70 C Accuracy E J K N T 1 C B R S 2 C Temperature drift E J K N T 0 05 C C B R S 0 2 C C Sensor break output drive Function high upscale low downscale CJC error 1 C Response time 400msec Temperature thermocouple The thermocouple is one of the most common temperature sensors used in industry It relies on the Seebeck coeffi cient between dissimilar metals The thermocouple type is sel...

Страница 16: ...t 0 3mA nominal Sensor break output drive Function high upscale low downscale Accuracy Better than 0 2 C Temperature drift 0 007 C C Response time 400msec Temperature RTD The RTD standing for Resistance Temperature Device is highly stable and accurate and is fast becoming the most popular temperature sensor in industry Often referred to as Pt100 and Pt1000 the Pt represents platinum the dominant m...

Страница 17: ...ature Coefficient is a particular type of thermistor NTC s are popular in the HVAC industry due to their low cost but have a limited temperature range which makes them less popular in general industry The biggest issue with their general acceptance is that there is no standard that covers inter operability between dif ferent thermistor manufacturers Supported NTC types ranges 10K Beta 3984 55 C 67...

Страница 18: ...al in industry and is univer sally accepted As a current loop it is unaf fected by voltage drops in cables and can be transmitted over long distances with out signal degradation 4 20mA DC loop powered transmitter The meter can provide power to a loop powered transmitter and at the same time measure the signal This configura tion is ideal for when there is a long dis tance between the sensor and th...

Страница 19: ...up ports a 200mV DC range Typical applica tions include measuring large DC currents using external current shunts 200mV to 1V DC A 200mV to 1V range is provided for interfacing to sensors and other elec tronic apparatus that provide this output 0 10V DC 0 10V DC is a common process signal gen erated by transmitters meters and PLCs It would normally be scaled into engineer ing units by the meter 10...

Страница 20: ...ge measur ing range typically used to measure bat tery voltages power supply outputs etc 0 300V DC This higher voltage general purpose range is typically used to measure battery volt ages power supply outputs etc CAUTION Risk of electric shock Exercise extreme caution when handling high voltage inputs ...

Страница 21: ...lue The meter can also provide up to 25mA to power a 3 wire NPN paddle type flow sensor RPM mode ToolBox RPM mode enables an input from an NPN or PNP proximity sensor to be con verted to an RPM Revs Per Minute value The input signal up to 2KHz is converted into RPM by programming the unit with the pulses per revolution value The meter can also provide up to 25mA to power a 3 wire NPN proximity sen...

Страница 22: ...t Field prog zero 0 90 of span Field prog span 0 1 100 Linearity and repeatability 0 05 FSO typical Response time 100msec Temperature drift 50ppm C 3 wire potentiometer A 3 wire potentiometer is typically used to measure position The low medium or high potentiometer range can be pro grammed to your unit using the ToolBox software These ranges must be calibrated using the two point calibration meth...

Страница 23: ...4 20mA DC loop powered ACCS 010 0 10V DC Power supply ACCS 420 Loop powered 15 36V DC ACCS 010 Self powered Accuracy 1 of full scale Response time 250ms 10 90 Isolation voltage 2 000V Frequency 50 60Hz AC current sensors The meter accepts input from a Define Instruments AC current sensor Set the jumper on the top of the current sensor to the desired current range as shown right AC Current Sensor 4...

Страница 24: ...ns c err Internal Comms Error Try re starting unit If the problem is intermittent this error could be caused by an EMC issue Please refer to 5 2 for potential remedies Er CL Analogue Output Calibration Error Factory calibration of analogue output is corrupt or missing Return unit to fac tory for re calibration ER Fl Display Flash Error Settings such as decimal point scaling and brightness will be ...

Страница 25: ...ets Criterion A Note 1 Meets NAMUR NE 21 recommendation Immunity Signal Ports Phenomenon Basic Standard Test Value Performance Criteria Conducted RF IEC 61000 4 6 3V 150Khz to 80Mhz Meets Criterion A Burst IEC 61000 4 4 1KV 5 50ns 5Khz 1KV 5 50ns 100Khz Meets Criterion A Note 1 Meets NAMUR NE 21 recommendation Surge IEC 61000 4 5 1KV L E Meets Criterion A Note 1 Immunity AC power Phenomenon Basic ...

Страница 26: ...esting normal performance within the specification limits Performance Criterion B During testing temporary degradation or loss of performance or function which is self recovering Note Stated performance by the manufacturer will have an additional error of less than 0 2 of full scale range due to EMC influence ...

Страница 27: ...y period of any product which has been either repaired or replaced by Define Instruments User s Responsibility We are pleased to offer suggestions on the use of our various products by way of print ed matter on our website or through direct contact with our sales application engineer ing staff However since we have no control over the use of our products once they are shipped NO WARRANTY WHETHER O...

Страница 28: ...Box 245 Westpark Village Auckland 0661 New Zealand Ph 64 9 835 1550 Aus 1800 810 820 Fax 64 9 835 1250 Email rolla defineinstruments com www defineinstruments com South Africa 16B North Road Dunkeld West 2196 Johannesburg South Africa Ph 079 785 8119 Email dylan swartz defineinstruments co za www defineinstruments co za Define Instruments Ltd ...

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