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KMS-2/Exia Transmitter 

Installation and Operating Manual 

 

ATEX 

 

 

Page 12 of 13                                  

KMS-2/Exia IOM 

Rev C      14/06/2018 

 

 

Fault analysis Sheet 

 

 

 

 

Problem 

Possible Fault 

Action 

 

 

Zero current eg. 0mA 

Supply Voltage to low < 8V 

Check voltage and adjust 

accordingly 

Supply Connections reversed 

Swap supply cables 

Cables/Connecting circuit faulty  Rectify as required 
Faulty Unit 

Consult Factory. 

Current Greater than 22mA 

Supply voltage to high > 28V 

Adjust voltage to less than 28V 

Output at  

3.8mA (Low level) 

Float damaged (sunk) 

Fit new float 

Chamber empty 

Open check valves  

 

Continual reading of  either 

3.58mA Downscale 

22mA Upscale 

Float magnetic field not being 

sensed 

Check gap distance between 

chamber and transmitter  

Float Under magnetised 

Check with spare float if 

available 

Output static at a particular level 

Float stuck or damaged 

Check against visual display if 

fitted. Check float condition 

Residual magnetic interference 

Run magnet along full length of 

probe, Consult Factory. 

External magnetic interference 

Check for external magnetic 

devices in vicinity. 

 

4-20mA not proportional to 

liquid level 

“XXXX” marks not in line with 

vessel connections 

Realign transmitter marks 

correctly 

S.G range of float incorrect for 

media type 

Check S.G etched on float 

against media S.G 

 

Table 3  

Fault Analysis  

 

 

 

Maintenance 

 

The unit contains no user serviceable parts; therefore no routine maintenance is required. 

 

Dependent on model or application: 

 

For coated options: 

 

Where the case of the device may be subjected to impact or friction, periodic examination is 

required to ensure that the integrity of the stove enamelled finish is maintained. 

 

For Immersion Applications 

 

The sensor tube must be kept clean to prevent the float “sticking”. 

 

 

 

 

 

 

Summary of Contents for KMS-2

Page 1: ...Revision D 20 09 2018 Installation and Operating Instructions KMS 2 Exia Magnetostrictive Level Transmitter ...

Page 2: ...Outputs 2 Installation General 4 Magnetic Level Gauge Applications 4 Immersion or in tank installation 4 Electrical Connections 7 Cable Selection 7 Adjustment and Configuration 8 Configuration switches 9 Transmitter Front Panel Settings Flowchart 10 Certification 11 Fault analysis Sheet 12 Maintenance 12 Technical Data 13 ...

Page 3: ...n Information on proper electrical installation Safety information Read these instructions before installation and putting into operation Installation commissioning and maintenance should only be carried out by suitably qualified personnel in conjunction with these instructions Comply with the relevant safety regulations when using the equipment The transmitter must not be modified as this will in...

Page 4: ... a level measurement to be made since the precise velocity of the return signal along the sensing element is known Outputs LCD Indicator When fitted the display provides local indication dependent on the display mode as shown in table 1 Mode Function Display Mode Range mA PV mm NORMAL Measuring 0 00 100 00 4 00 20 00 Actual distance in mm from reference point Fixed Output Zero 0 00 4 00 Distance t...

Page 5: ...UE Zero LED Span LED NORMAL Measuring 4 20mA Off Off Fixed Output Zero 4mA On Off Span 20mA Off On Fault Signalling Current Setting Downscale 4 20mA Flash Off Upscale Off Flash CALIBRATION Start 12mA Flash Flash Zero set 12mA On Off Span set 12mA Off On Alarm Low level 3 8mA Off Off Downscale 3 58mA Off Off Upscale 22mA Off Off Table 2 Instrument output status indication The Low Level alarm must b...

Page 6: ...ulation is correctly fitted during reassembly to ensure operating temperatures are maintained within the range specified on the EU type approval certificate Immersion or in tank installation The transmitter should be fitted to the tank with reference to Fig 2 The distance between the tank connection and electronic housing will vary dependent on temperature and for a weld on connection be factory s...

Page 7: ...ting Manual ATEX Rev D 20 09 2018 KMS 2 Exia IOM Page 5 of 13 TRANSMITTER Fig 1 Typical Installation When Fitted to Magnetic Level Gauge DISPLAY TOP MOUNT OPTION BOTTOM MOUNT OPTION SCREW CLAMP GAUGE CHAMBER INSULATION IF REQUIRED TRANSMITTER CLIP ...

Page 8: ... 06 2018 Fig 2 Immersion Application Ensure that the PFA PTFE washer is correctly fitted to prevent the risk of sparking if the float was to hit the stop Ensure that the electronic assembly is maintained within the certified ambient temperature range consult sales office to determine correct offset ...

Page 9: ...ions When a screened cable is used the screen should be connected to the internal earth connection provided Hazardous area Installation The installation of this unit must be in compliance with the applicable national requirements i e EN60079 14 Intrinsically Safe Circuits The connection cable shall be identified to prevent confusion with non intrinsically safe circuits where a colour code is used ...

Page 10: ...mA 6 Set the float to the maximum level 7 Press the Span and Zero buttons until both LED s flash alternatively output 12mA 8 Release buttons 9 Press the Span button until the Span LED stays on 10 Wait until the Span LED extinguishes output 20mA If the optional LCD is fitted the display will read CAL during the setting process The measuring range can be set within the factory limits with a maximum ...

Page 11: ...When complete display will revert to normal measurement mode If change not required wait 20 Seconds unit will return to Measurement Mode Low level alarm The Low Level alarm output signal will change the output to 3 8mA if the float drops more than 13mm below zero point When off the output will remain at 4mA below the zero point until the return signal is lost i e the sensor is no longer sensing th...

Page 12: ...Manual ATEX Page 10 of 13 KMS 2 Exia IOM Rev C 14 06 2018 Transmitter Front Panel Settings Flowchart 1 Transmitter must be detecting float before settings can be changed 2 Analogue fault signalling setting Rev5 onwards Displayed during startup Init 5 1 ...

Page 13: ...0 C T3 195 C T4 130 C T5 95 C T6 80 C 50 C Ta 40 C Table 2 Relationship between Temperature class process temperature and ambient temperature In accordance to EN60079 11 2012 clause 6 3 13 this apparatus is capable of withstanding a 500V isolation test EMC In accordance to EU council directive 2014 30 EU Emissions EN 61326 2004 Class B STANDARD DESCRIPTION PORT RESULT EN 61326 Radiated Emissions E...

Page 14: ...ailable Output static at a particular level Float stuck or damaged Check against visual display if fitted Check float condition Residual magnetic interference Run magnet along full length of probe Consult Factory External magnetic interference Check for external magnetic devices in vicinity 4 20mA not proportional to liquid level XXXX marks not in line with vessel connections Realign transmitter m...

Page 15: ...d Current range 4 20mA 0 1 Fault Current Upscale 22mA Downscale 3 5mA Low level When enabled 3 8mA Default Factory setting Fixed Output For loop calibration 4 or 20mA 0 1 Operating Temperatures See certification section for details when used in a potentially explosive atmosphere Ambient range 50 C 60 C 30 C 60 C When LCD Fitted Process range 50 C 250 C Fig 7 Ambient verses process temperature for ...

Page 16: ...WIKA Instruments Ltd TC Fluid Control Level Division Unit 4 The Interchange Wested Lane Swanley Kent BR8 8TE Tel 44 0 1322 622400 Website www tc fluidcontrol com ...

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