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Arkon MAGS1, User Manual

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MAGS1 User Guide 

4 

V1.5 22-1-2016 

  

 

2. Installation 

 

 

2.1. Sensor installation 

 

Sensor dimensions can be found on chapter 8. 
Proper sensor installation is extremely important in order for your flowmeter to work correctly. Below, you 
will find the minimum sensor installation requirements that need to be respected at all time. 
 
 
 
 
 
Sensor 
installation 
requirements: 

 

 

 
 
 
 

 
 
 
 
 
 
 
 
 

 
 
 
 

 

All MAGS1 sensors are supplied with 2 built in earthing electrodes that are sufficient for all applications with 
metal pipes and tanks. However on applications where all pipes and tanks are manufactured from plastic, it 
is recommended that earthing rings are also  installed  to ensure the maximum resistance  of the sensor to 
earth is <1 ohm.  
 
 

 

 

Conductive (metal) pipe

 

Non-conductive (plastic, lined) 

pipe 

Summary of Contents for MAGS1

Page 1: ......

Page 2: ... Definitions and Abbreviations 11 4 4 References 11 4 5 Technical data 11 4 6 General Modbus RTU 12 4 7 Commissioning 13 4 8 Modbus addressing module 13 4 9 Modbus function codes 13 4 10 Modbus holding registers 14 4 11 Password 14 4 12 Real time measurement 15 4 13 Info 16 4 14 User settings 17 4 15 Service Settings 18 4 16 Factory Settings 19 5 Internal backup 20 5 1 Automatic saving data 20 6 S...

Page 3: ...MAGS1 User Guide 2 V1 5 22 1 2016 ...

Page 4: ...tions Please read this manual carefully before using the product Keep this manual for future reference Arkon Flow Systems s r o will not be liable for any damage caused by improper use of the product or its accessories If the device is used any different way than is specified the electric protection may be disrupted The MAGS1 flow converter flow meter must not be mounted in explosive hazardous are...

Page 5: ...rements that need to be respected at all time Sensor installation requirements All MAGS1 sensors are supplied with 2 built in earthing electrodes that are sufficient for all applications with metal pipes and tanks However on applications where all pipes and tanks are manufactured from plastic it is recommended that earthing rings are also installed to ensure the maximum resistance of the sensor to...

Page 6: ...ll solve itself within 2 3 days and no other action is required at all 2 3 Electrical installation Meter is produced with the cable already attached in case of exchanging the cable pull the connection cable through the cable gland on the top of the sensor connect it according to color coding below 2 4 Cables connections The following diagram shows the connections of the cables between sensor and y...

Page 7: ...cation module to guarantee IP68 protection of the sensor it is necessary to pot the sensor terminal box properly The proper way to do this is described below Plug the connectors into the sensor white and green wire adjacent Screw the small terminal box to the sensor neck 4 screws Fill the terminal box completely with silicone by squeezing it through the opening on top of the box Close the small te...

Page 8: ...ology of RS485 is shown N nodes are connected in a multipoint RS485 network for longer lines the termination resistances Rt are necessary on both ends of the line to eliminate reflections use 100 Ω resistors on both ends The RS485 network must be designed as one line with multiple drops not as a star Although total cable length maybe shorter in a star configuration adequate termination is not poss...

Page 9: ...MAGS1 User Guide 8 V1 5 22 1 2016 BASIC CIRCUIT CONNECTIONS ...

Page 10: ...sword Reserved Factory password Actual Flow Flow sign Total DIG Total DEC Total DIG Total DEC Total DIG Unit No Error min Ok min Diameter Firmware No Flow Qn Total DEC AUX DIG AUX DEC ERROR CODE Data from AD converter Average data from AD converter Empty pipe data from AD converter Temperature C Info ...

Page 11: ... 0 5 2 1 3 2 4 5 5 10 Samples per Avg Low Flow Cutoff Electode Cleaning 0 Even 1 stopbit 1 Odd 1 stopbit 2 None 2 stopbits 3 None 1 stopbit Invert Flow Modbus BaudRate Delete Ok min Delete Error min Delete Total Volume Delete Negative Volume Delete Positive Volume Flow simulation Simulated Flow Service Settings User settings Calibration Data 2 Calibration Point 3 Calibration Data 3 Zero Flow Test ...

Page 12: ...on standard TIA EIA 485 or RS 485 RTU Remote Terminal Unit Standard Modbus transmission mode 4 4 References Reference 1 Modbus over Serial Line Specification Implementation guide v 1 0 modbus org 12 02 02 Reference 2 Modbus Application Protocol Specification v 1 1 modbus org 12 06 02 4 5 Technical data ARKON Flowmeter Modbus RTU specification Device type Slave Baud rates 9600 14400 19200 38400 576...

Page 13: ...ne master can be connected at any single point in time Two modes of communication are possible Unicast and Broadcast Unicast mode is where the master sends a request to one slave device and waits a specified time for a response In Broadcast mode the master sends out a request to address 0 which means that the information is for all slave devices on the network In Broadcast mode there is no respons...

Page 14: ...address Requesting data above crossing limitation of max register address 0xFFFF Exception 2 Illegal data address If the end address is only part of a mapped holding register item e g one half of a longint value Exception 2 Illegal data address Application exceptions Application errors Exception 2 Illegal data address Holes register alignment The read command always returns data if no exception is...

Page 15: ...ool this item can be read but its value has no meaning Writing value 1 to this item will cause an unspecified operation to be performed resetting the flow totalizers etc It is necessary to write both Low and High Word of this item the register number always has to be an even number Not meeting these requirements will cause an Exception 2 error Illegal data address 4 11 Password To enter the User s...

Page 16: ...00 Temperature C R Actual Flow Unit m3 h it is not possible to change it Real value Actual value 1000 Flow Sign Sign of the read flow 0 positive flow 1 negative flow Total Total Total Aux Unit m 3 it is not possible to change it The final number is given by the sum of the whole and the decimal Example Resulting Total measurement TOTAL DIG TOTAL DEC 10 3 Error Code Convert read value to binary code...

Page 17: ...int 0 0 1 000 Diameter R 1008 1007 4 Longint 2 0 9 999 FirmWare No R 1010 1009 4 Longint 3 0 36 000 000 Flow Qn R Unit no unique number for each flowmeter If there are any problems please refer to this number Error min the minutes count the device was not measuring because of errors OK min the minutes count the device measured correctly Diameter nominal sensor diameter that is currently configured...

Page 18: ...lume R W 2018 2017 4 Longint 0 1 247 1 Modbus Slave Address R W 2020 2019 4 Longint 0 0 115200 9600 Modbus BaudRate 9600 14400 19200 38400 57600 115200 R W 2022 2021 4 Longint 0 0 3 3 Modbus Parity 0 Even 1 stopbit 1 Odd 1 stopbit 2 None 2 stopbits 3 None 1 stopbit R W 2024 2023 4 Longint 0 0 60 15 Start Delay R W Measurement 1 Stop the unit shows actual flow but the totalizers are stopped 0 Runni...

Page 19: ... Bool 0 0 1 Delete OK min R W 3002 3001 4 Bool 0 0 1 Delete Error min R W 3004 3003 4 Bool 0 0 1 Delete Total Volume R W 3006 3005 4 Bool 0 0 1 Delete Negative Volume R W 3008 3007 4 Bool 0 0 1 Delete Positive Volume R W 3010 3009 4 Bool 0 0 1 Flow Simulation 0 ON 1 OFF R W 3012 3011 4 Longint 3 0 36 000 000 Simulated Flow R W Delete OK min write value different to zero to erase the OK min counter...

Page 20: ... Hz 1 6 25 Hz R W 4040 4039 4 Bool 0 1 1 Excitation 0 ON 1 OFF R W Diameter diameter of the sensor Unit No the serial number of unit Flow Qn expected flow Qn It is set automatically when you write diameter Calibration Point 1 calibration flow 1 Calibration Point 2 calibration flow 2 Calibration Point 3 calibration flow 3 Calibration Data 1 calibration data 1 Calibration Data 2 calibration data 2 C...

Page 21: ...tic saving data Once an hour following data are saved to internal EEPROM These are Total Total Total Aux OK min Error min If the power supply is switched off those data are recovered from the EEPROM memory In the worst case you can lose one hour of totalizer values ...

Page 22: ...e MAGS1 has an electrolytic method to clean electrodes An electrolytic method is advantageous for its simplicity however it can only be applied for the contamination that can be removed by electrolysis Low contamination and deposit 24VAC voltage is applied directly to sensor electrodes to clean them ...

Page 23: ... the site where the flowmeter is to be used for what materials are acceptable for the process media Arkon can only recommend materials we cannot guarantee them Please note that Arkon offers also WRAS approved material for all standard sizes For more info contact our sales department Liner Selection Hard Rubber Drinking water and wastewater 0 70 C Soft Rubber Water with abrasive particles 0 70 C PT...

Page 24: ...295 12x22 421 350 250 405 355 12x26 491 400 ANSI TYPE DN ØD ØD1 CxØd H_remote L 1 108 79 2 4x20 191 200 1 1 4 117 3 88 9 4x20 201 200 1 1 2 127 98 6 4x23 216 200 2 152 4 120 7 4x20 227 200 2 1 2 177 8 139 7 4x20 244 200 3 190 5 152 4 4x20 261 200 4 228 6 190 5 8x20 290 250 5 254 215 9 8x23 314 250 6 279 4 241 3 8x23 348 300 8 342 9 298 5 8x23 422 350 10 406 4 362 12x26 491 400 Tolerance of built i...

Page 25: ... easy order form Due to the design of the MAGS1 no single ordering code exists Only the MAGS1 sensor has its own ordering code Model Ordering code Description MAGS1 1 2 3 4 5 Connection D DIN A ANSI Size 25 250 25 250 mm 1 10 1 10 Liner HR Hard Rubber PT PTFE SR Soft rubber NR Hygienic rubber Pressure 150 150psi 300 300psi 10 PN10 16 PN16 25 PN25 40 PN40 Electrodes SS Stainless Steel HA Hastelloy ...

Page 26: ... Temperature error 14 15 RESERVED non use Errors in Modbus register are indicated in hex format and have to be converted to binary format Once the error code has been converted to binary format each position is related to a different error see the table above Number 1 indicates error and number 0 indicates no error Example Error shown in Modbus register Error position Read errors 76543210 085HEX 1...

Page 27: ... Arkon Flow Systems s r o Return Regulations and Warranty Conditions are an integral part of the Resellers contract and of any Order Confirmation Please see your Resellers contract or www arkon co uk Support section The Warranty sheet is part of the Packing note of any new goods sent For the claim or return procedure please consult our web site www arkon co uk or call the Arkon Flow Systems s r o ...

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