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D-2 Incorporated JF-1A Installation & Safe Use Manual

Jet fuel 1a conductivity sensor
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JF-1A CONDUCTIVITY SENSOR
D-2 INCORPORATED
Jet Fuel 1A Conductivity Sensor
Installation & Safe Use Manual
REVISION 3.0
P/N A440-010
This manual covers the installation and use aspects of the D-2 JF-1A Conductivity
Sensor. D-2 continuously strives to meet the full expectations of our customers and we
welcome comments on the structure, content and the ability of this manual to answer
your questions regarding our product. If you have any suggestions or comments please
contact us at Mail@D-2inc.com.
A440-010
1
December, 2005
PDF created with pdfFactory trial version
www.software-partners.co.uk

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Summary of Contents for D-2 Incorporated JF-1A

  • Page 1 REVISION 3.0 P/N A440-010 This manual covers the installation and use aspects of the D-2 JF-1A Conductivity Sensor. D-2 continuously strives to meet the full expectations of our customers and we welcome comments on the structure, content and the ability of this manual to answer your questions regarding our product.
  • Page 2 JF-1A CONDUCTIVITY SENSOR Read the instructions in this manual carefully before installing or starting the system. D-2 Incorporated will accept no liability for damages due to non-observance of this manual. If the instructions in the operating manual are not adhered to or are...
  • Page 3 JF-1A CONDUCTIVITY SENSOR Notes for User WARNING! There is a danger to life and limb or a risk of serious injury if the notes on safety are disregarded! CAUTION! There is a risk of injury and damage to property if the notes on safety are...

  • Page 4: Table Of Contents

    JF-1A CONDUCTIVITY SENSOR TABLE OF CONTENTS OPERATION MANUAL 1.0 GENERAL & LABELING 2.0 INSTRUCTION FOR SAFE USE 3.0 SENSOR MAJOR COMPONENT IDENTIFICATION 4.0 SENSOR INSTALLATION (ASSEMBLING/DISMATLING) 5.0 SENSOR REMOVAL 6.0 SPECIFICATIONS & MAXIMUM ALLOWABLE VALUES 7.0 MAINTENANCE 8.0 ADJUSTMENT 9.0 DETAILS TO ALLOW SAFE USE AS INTENDED 10.0 SPECIAL CONDITIONS OF USE...

  • Page 5: General & Labeling

    JF-1A CONDUCTIVITY SENSOR 1.0 GENERAL & LABELING JF-1A Applications The JF-1A Conductivity Sensor is a 2-Wire 4-20 mA Electrical Conductivity Measurement Sensor. The sensor is used for measuring the electrical conductivity of liquid media: Liquid media In hazardous locations, Zone I of Explosion Group II C corresponding to EN guidelines In hazardous locations Class I, Div.

  • Page 6: Instruction For Safe Use

    JF-1A CONDUCTIVITY SENSOR 2.0 INSTRUCTION FOR SAFE USE The D-2 JF-1A Conductivity Meter reads conductivity in picosiemens/meter, fuel temperature in ITS-90 degrees C, and fully compensated Conductivity in picosiemens/ meter per ASTM D 2624, Appendix X2 in liquid fuels and solvents. The sensor can be used in a 2 wire 4-20 mA industrial control loop or in conjunction with a serial input device using RS-232 IEEE Standard ASCII Serial Input Data.
  • Page 7 This applies in particular to working on the liquid end. Assembly of the JF-1A Sensor with parts not tested and approved by D-2 Incorporated is prohibited and can result in damage to persons and property, for which no liability will be accepted.

  • Page 8: Sensor Major Component Identification

    JF-1A CONDUCTIVITY SENSOR 3.0 SENSOR MAJOR COMPONENT IDENTIFICATION Figure 2 Major System Components 1 Ball Valve 6 Electronics Housing 2 Sensor Mount Adaptor 7 Electrical Connection Side 3 Mounting Nut 8 Label 4 Locking Collar 9 Installation Reference Plane A440-010...
  • Page 9 JF-1A Conductivity Sensor 4.0 INSTALLATION ASSEMBLING/DISMATLING 4.1 MECHANICAL INSTALLATION WARNING! Prior to Installation, local codes and regulations regarding the installation and operation of this type of device should be reviewed and strictly adhered with to ensure safe and reliable operation of the system.
  • Page 10 JF-1A Conductivity Sensor IMPORTANT: The Ball Valve MUST Have a Clear Opening of 1.0” through its center to allow the D-2 sensor to pass unobstructed. 4.4 INSTALLATION Figure 4 INSTALLATION DRAWING 1. Turn locking mechanism counter clockwise to loosen sleeve.
  • Page 11 JF-1A Conductivity Sensor Figure 5 INSTALLATION DRAWING ATTENTION! Prior to performing the next steps ensure product line pressure is less than 150 psia (10.0 Bar). 4. Turn ball valve handle 1/4 turn to open. 5. Turn “black” locking mechanism counter-clockwise to loosen shaft.
  • Page 12 JF-1A Conductivity Sensor ATTENTION! Pushing the sensor to far into the main product line may result in damage to sensor and require factory re-calibration or repair. Ensure entry into main product line is clear and free of obstructions. 6. Push sensor down into product line.
  • Page 13 Lines, or electrical circuits containing large transient switching currents. WARNING: Prior to arc welding in proximity to the JF-1A sensor (closer than 10 meters (30 feet) the sensor should be either removed from the product line or at a minimum disconnected from all electrical connections to the sensor.
  • Page 14 JF-1A Conductivity Sensor 4.5 High Flow Rate Installation To reduce the instance of fluid flow separation inside the JF-1A sensor assembly an alternate insertion depth is required. D-2 defines high flow product lines as lines in which the velocity of product exceeds 1.5M/sec (5 ft/sec).
  • Page 15 These are “snap” out Molex screw terminals which can be removed to assist in wiring. Cabling used should be in compliance with the JF-1A ATEX examination certificate. The 4- Wire defined as Power Ground RS-232C Transmit and Receive Data, the 2-Wire interface defined as 4-20 mA current loop and earth safety ground connections.
  • Page 16 1A sensor may be activated. The 4-20 mA Loop supply open circuit voltage must be consistent with the “Open Circuit Supply” needs of the JF-1A at both its minimum and maximum indicating currents. The JF-1A has both input voltage limiting protection and polarity protection.
  • Page 17 JF-1A Conductivity Sensor prevent the voltage across the sensor loop terminals from exceeding the maximum voltage listed in the specifications section of the manual. If this condition is not maintained, errors in the current output may occur. D-2 recommends that a 24 VDC isolated supply be used to power the instrumentation loop.
  • Page 18 JF-1A Conductivity Sensor 4.8 RS-232 CONNECTIONS Considerations (4-Wire) Figure 8A 4-WIRE ELECTRICAL CONNECTION DETAIL WARNING: For the purpose of intrinsic safety the housing must be tied to earth. Safety Ground wire must be installed under housing ground screw in user wiring compartment. A cable lug shall be used and the conductor shall be mounted so that it is secured against loosening and twisting and that the contact pressure is permanently maintained.
  • Page 19 RS-232 Data Out (TXD) The RS-232 Interface is fully isolated from the sensor electronics through the use of optical isolators located in the JF-1A/ATEX sensor. Data cable for the RS-232 should be low capacitance data cable. Lengths in excess of 20 meters may result data degradation of the RS-232 signals.

  • Page 20: Sensor Removal

    5.1 DISCONNECT POWER Turn off system power to the unit and disconnect electrical connections from the user interface. Remove any conduit connections from the JF-1A Sensor. Ground the sensor to the main line prior to removal from the line. 5.2 PULL SENSOR BACK...
  • Page 21 WARNING : Warning pulling the sensor back to into the adaptor with force may break or damage the sensor. Extreme care must be used when withdrawing the JF-1A sensor from the product line. FIGURE 9 DETAIL FULLY RETRACTED SENSOR 28"...
  • Page 22 JF-1A Conductivity Sensor 6.0 SPECIFICATIONS The electrical parameters are factory calibrated to 1% of reading. However, due to fuel measurement characteristics, the repeatability and reproducibility limits are as follows: Table 2 SENSOR SPECIFICATIONS SENSORS: Parameter Conductivity Temperature Range 0 – 500 pS/M -5 –...
  • Page 23 EExd [ia] IIC T4 FM Certification Pending UL Certification Pending CONDUCTIVITY READINGS The following table details current output readings for the JF-1A sensor with a nominal 0-500 pS/M range representing 4 – 20 mA. CONDUCTIVITY (Ps/M) Current (mA) Voltage * (Volts) 1.00 62.5...

  • Page 24: Maintenance

    The instrument has no internal electrical adjustments that need to be maintained. 7.2 Cleaning The JF-1A Conductivity Sensor should be cleaned every 6 months of use. Fuel additives or particulate may build up on the sensor, degrading its performance. 7.3 Sensor The main electronics housing is sealed to the environment.

  • Page 25: Adjustment

    See Section 2.0 of this manual. 10.0 SPECIAL CONDITIONS OF USE The JF-1A Sensor is intended for the measure of electrical conductivity of liquids only. It is not intended for any other purpose. There are no special conditions of use for the JF-1A sensor...
  • Page 26 JP2 Terminals. These are “snap” out Molex screw terminals which can be removed to assist in wiring. Cabling used should be in compliance with the JF-1A Ex examination certificate. The 2 wire temperature interface is “polarity insensitive”.
  • Page 27 JF-1A Conductivity Sensor 11.1 2-Wire 4-20mA LOOP CONSIDERATIONS WARNING: 2-Wire Loop Maximum Resistance including wire can not exceed 500 ohms, or internal intrinsic over voltage safety devices in the JF- 1A sensor may be activated WARNING: For the purpose of intrinsic safety the housing must be tied to earth.
  • Page 28 JF-1A Conductivity Sensor 11.2 4 – 20 mA Temperature Readings The following table details current output readings for the JF-1A sensor with a nominal -10 to 60 Celsius range representing 4 – 20 mA. (Please consult the factory for alternate range settings of the current output):...