background image

Installation, Operation, & Maintenance Instructions 

IOM J500.35 

2021.04 

JMT 

 

www.Jerguson.com 

● 

[email protected] 

 +1.440.572.1500 

 

15 

  

4.2.7  Flip Transmitter 

 

Select Top or Bottom Mount (Head Location) 
 

CAUTION

 
For accurate measurement, it is recommended you perform a 

Trim

 function as seen in sectio

4.2.8

. 

 

 

4.2.8  One Point Calibration 
 
Note: The JMT is designed such that it should never require recalibration. The below actions are to 
be utilized for very specific reasons.  
 

Two forms of One Point Calibration are available. 

Calibration

 is 

an emergency procedure 

to be used only if moving the 

instrument electronics/module between two installations

. See 

Calibration/Level Sensor 2Pt Cal

 for more accurate calibration. 

Trim

 is used either after performing 

Flip Transmitter

, or if the 

entire instrument and probe is being moved from one installation 
to another.  
 
See sectio

5

 for Troubleshooting. 

 

Calibration 
 
This is the overall length of the sensor. Only used if 

Calibration

 

has been selected. 
 
 
 
 
4-20 mA Loop, 4mA lower Range Value 

This will set the measured level at which the output is 
4mA. It will be done in the units set in 

User Installation

 
4-20 mA Loop, 20mA upper range value 

This will set the measured level at which the output in 
20mA. The maximum value for this is the Sensor Length 
parameter. 

 

Perform Float Position Calibration 

Note: this is same as Trim command from upper menu. 

 
You will be prompted to decide if this step is necessary; 

No

 

reverts back to menu.  
 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Summary of Contents for JMT Series

Page 1: ...Installation Operation Maintenance Instructions IOM J500 35 2021 04 JMT www Jerguson com JergusonApp clark reliance com 1 440 572 1500 1 JMT Series Magnetostrictive Transmitter IOM...

Page 2: ...Seller to be defective such Goods will at the Seller s option be replaced or repaired at Seller s cost The parties hereto expressly agree that Buyer s sole and exclusive remedy against the Seller shal...

Page 3: ...ired 2 2 Vibration Kit if Required 2 3 Temperature Insulation Safeguards 2 4 General Preparation Tips 2 5 Installation Procedure 3 Wiring 3 1 Hazardous Location Safety 3 2 Proper Grounding 3 3 Recomme...

Page 4: ...aused by outdoor storage or other negligent storage is not covered by Clark Reliance Warranty a JMT Transmitters ship with NPT type plugs to prevent water ingress These plugs should not be considered...

Page 5: ...closure set screw 5 32 Allen Key chamber brackets 5 16 Nut Driver or equivalent tool hose clamp 2 2 Vibration Kit if Required A special mounting kit with material to reduce the effects of vibration on...

Page 6: ...between the top and bottom brackets Do not exceed 24 inches 610 mm bracket spacing 2 Align the 4mA and 20mA level range markings on the sensor tube with the center of process connections or limits of...

Page 7: ...the following electrical faults to ground accumulation of electrostatic charges atmospheric discharges The JMT is supplied with both an external and internal earth grounding screw Either of these scr...

Page 8: ...when entering a value 4 1 1 Boot Up Welcome Screen Software Version Ex V 29 000 Hardware Version Ex 0 Serial Ex 456789 01A Hart Dev ID Ex 1001 Vessel Tag if setup Ex LT 1963 Production Date Ex 04 14 2...

Page 9: ...ating Screen will display a graph of the signal measured by the instrument If a float is detected it will center on the position of that float showing the lowest and highest value on the graph in unit...

Page 10: ...evious digit in a menu If in the Standard Operation Screen or Signal Lost Screen it will display the Sensor Output Graph of channel 3 See Waveform View section 4 1 5 Entering Values The total number o...

Page 11: ...ccessed by pressing the Enter button Details of each submenu are given in subsequent sections Once you have entered a submenu it is necessary to progress through the entire submenu before exiting it I...

Page 12: ...as well as whether the calibration has been modified since being shipped from the factory Boot Welcome Screen Software Version Hardware Version Serial HART ID Vessel Tag if entered Production Date In...

Page 13: ...displayed Then press Enter to move to next screen Level Offset This is a user value for if they have a need to report a level offset from the measured level Typically this is the distance from the lo...

Page 14: ...ted in engineering units selected inches millimeters etc just the current and percentage output The units for both will be based on those set in User Installation Enter the span for full value Typical...

Page 15: ...two installations See Calibration Level Sensor 2Pt Cal for more accurate calibration Trim is used either after performing Flip Transmitter or if the entire instrument and probe is being moved from one...

Page 16: ...ia Level or Exit Without Saving If you agree with the output simply Exit Without Saving To calibrate the output to a different measurement select ADJ Media Level ADJ Media Level Unit will show current...

Page 17: ...m any control processes First connect your NIST Traceable Multimeter in series with the Loop power on the Negative side Select 4 20 mA Loop DAC Trim Press Enter and the transmitter output will go to 4...

Page 18: ...he float at point 1 You will need to know the position of the float and it must be stable When the float is at point 1 and stable press Yes 120 Measurements will be taken to provide the highest possib...

Page 19: ...o 1000 seconds 4 2 11 Filters Several filters are automatically used by the JMT to prevent erroneous signal measurement These filters may be adjusted as described in the Measurement Troubleshooting se...

Page 20: ...ll damp the change in output current not in the actual measurements Pulse Width Gain and Trigger Level Filter The pulse width filter is designed to remove signals detected by the sensor that do not ma...

Page 21: ...aled to a max voltage of 1 8 V and minimum of 0 6 V An example of Channel 1 shown here the sensor is working properly with the detected edge shown by the solid vertical bars In this instance the graph...

Page 22: ...alue Consult Factory for guidance Select Exit Gain Trigger Cal to get back to menu Selected Yes to save trigger gain adjustment or No to revert to previous setting 4 2 12 Reset Factory Configuration I...

Page 23: ...wire Where the Magnicator float s magnetic field intersects the magneto elastic sensing wire A torsional return pulse results and travels back towards the electronics where it is measured The time of...

Page 24: ...entation Residual magnetism on the sensor probe may lead to multiple signals being detected This would be shown by an unmoving signal on the graph and may be removed by running a bar magnet on the len...

Page 25: ...1 04 JMT www Jerguson com JergusonApp clark reliance com 1 440 572 1500 25 5 4 Measurement Troubleshooting Measurement Troubleshooting issues can be addressed in the Filters menu See Section 4 2 11 fo...

Page 26: ...r Non Linearity 01 of full scale or 030 whichever is greater Damping 1 to 32 Seconds Operating Temp 50 C to 85 C 58 F to 185 F RFI Guide SAMA PMC 31 1 5 1 20 to 1000 MHz to 30 V m Humidity Guide SAMA...

Page 27: ...a Class I Div 1 Groups B C D T6 Class I Zone 1 AEx db IIB H2 T6 Ex db IIB H2 T6 Gb ATEX ITS19ATEX14921X II 2G Ex db IIB H2 T6 Gb IECEx IECEx ETL 19 0030X Ex db IIB H2 T6 Gb Intrinsic Safety IP66 With...

Page 28: ...tallation Operation Maintenance Instructions IOM J500 35 2021 04 JMT www Jerguson com JergusonApp clark reliance com 1 440 572 1500 28 6 4 Full Menu Command List This section is left intentionally bla...

Page 29: ...on Operation Maintenance Instructions IOM J500 35 2021 04 JMT www Jerguson com JergusonApp clark reliance com 1 440 572 1500 29 16633 Foltz Parkway Strongsville OH 44149 USA 1 440 572 1500 www clarkre...

Reviews: