Endress+Hauser NAR300 Operating Instructions Manual
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Endress+Hauser NAR300 Operating Instructions Manual

Oil leak detector float sensor
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BA00403G/00/EN/12.23-00
71631470
2023-10-31
Products
Operating Instructions
NAR300 system for high
temperature
Oil leak detector float sensor
Solutions
Services

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Summary of Contents for Endress+Hauser NAR300

  • Page 1 Products Solutions Services BA00403G/00/EN/12.23-00 71631470 2023-10-31 Operating Instructions NAR300 system for high temperature Oil leak detector float sensor...
  • Page 2 NAR300 system for high temperature Order code: XXXXX-XXXXXX Ser. no.: XXXXXXXXXXXX Ext. ord. cd.: XXX.XXXX.XX Serial number www.endress.com/deviceviewer Endress+Hauser Operations App A0023555 Endress+Hauser...

  • Page 3: Table Of Contents

    Installation conditions ....24 Mounting NAR300 system ....26 Adjustment .

  • Page 4: Document Information

    Document information NAR300 system for high temperature Document information Document function These Operating Instructions contain all the information that is required in various phases of the life cycle of the device: from product identification, incoming acceptance and storage, to mounting, connection, operation and commissioning through to troubleshooting, maintenance and disposal.
  • Page 5 NAR300 system for high temperature Document information Flat blade screwdriver Torx screwdriver Allen key Open-ended wrench 1.2.4 Symbols for certain types of information and graphics  Permitted Procedures, processes or actions that are permitted  Preferred Procedures, processes or actions that are preferred  Forbidden...

  • Page 6: Documentation

    Document information NAR300 system for high temperature Documentation The following documents can be found in the Download area of our website (www.endress.com/downloads). For an overview of the scope of the associated Technical Documentation, refer to the following: W@M Device Viewer (www.endress.com/deviceviewer): Enter the serial number from nameplate 1.3.1...

  • Page 7: Basic Safety Instructions

    NAR300 system for high temperature Basic safety instructions Basic safety instructions Requirements for personnel The personnel for installation, commissioning, diagnostics and maintenance must fulfill the following requirements: ‣ Be specialists who are trained and have a relevant qualification for this specific function and task.

  • Page 8: Operational Safety

    Modifications to the device Unauthorized modifications to the device are not permitted and can lead to unforeseeable dangers: ‣ If modifications are nevertheless required, contact your Endress+Hauser Sales Center. Repair To ensure continued operational safety and reliability: ‣ Carry out repairs on the device only if they are expressly permitted.

  • Page 9: Product Description

    Product description Product description The NAR300 system is installed in an oil-retaining wall in a tank or in a sump pit near a plant or a pump yard, and it provides the ultimate leak detection function for oils, such as petrochemicals and vegetable oils.
  • Page 10 Protection class IP67 (outdoor installation) Power supply Supplied by NRR261 or NRR262 Cable entry • NAR300 (float sensor) side: G1/2, with cable gland • NRR261 or NRR262 (converter) side: G1/2, NPT1/2, M20 Weight 3.2 kg (7.1 lb) Materials Housing/cover: Aluminum casting 3.2.3...

  • Page 11: Process Conditions

    NAR300 system for high temperature Product description Process conditions 3.3.1 Float sensor NAR300 / sensor I/F Ex box Item Description Requirements for • Density is at least 0.7 g/cm but less than 1.0 g/cm substance detection • Floats in water (if the density is 0.9 g/cm or higher, the viscosity must be at least 1 mPa⋅s.

  • Page 12: Delivery Example By Order Code

    Sensor I/F Ex box Check tool (accessory) • The sensor I/F Ex box is included in the order code NAR300-x6xxxx. The intrinsically safe system is used in combination with NRR262. • A cable gland (water-proof connection) is only included with the sensor I/F Ex box or NRR261 with JPNEx specifications.
  • Page 13 Sensor I/F Ex box Check tool (accessory) • The sensor I/F Ex box is included in the order code NAR300-x6xxxx. The pressure- resistant, intrinsically safe system is used in combination with NRR261- 5**. • A cable gland (water-proof connection) is only included with the sensor I/F Ex box or NRR261 with JPNEx specifications.

  • Page 14: Detection Sensitivity

    Product description NAR300 system for high temperature Detection sensitivity If the electrode tip is pulled out of the lower-layer water due to increased thickness of the oil layer, water may cling onto the electrode tip like an icicle even if the electrode tip is in oil.

  • Page 15: Incoming Acceptance And Product

    • Do the nameplate data match the ordering information on the delivery note? • If required (see nameplate): Are the Safety Instructions (XA) enclosed? If one or more of these conditions are not satisfied, contact your Endress+Hauser Sales Center or distributor.
  • Page 16 70 ・Refer to control drawing Ex1087-1281- * IP67 Type 4X Endress+Hauser Yamanashi Co.,Ltd. Yamamashi 406-0846 NP-2742 Made in Japan A0039858  3 Nameplate for NAR300 NAR300 for FM NAR300 nameplate for ATEX / IECEx Order code Serial number Endress+Hauser...
  • Page 17 NAR300 system for high temperature Incoming acceptance and product identification NRR262 Order code Seri. no. AIS Class I, Div. 1, Gp. C, D Class I, Zone 0, AEx [ia] IIB Ambient temperature: -20°C ~ + 60°C IP20 Intrinsically safe circuit: Uo = 28 V Io = 85 mA Po = 595 mW Co = 0.083...
  • Page 18 Yamamashi 406-0846 NP-2767 Made in Japan NP-2769 A0039868  5 Nameplate for JPN Ex NAR300 nameplate for JPN Ex NRR261 nameplate for JPN Ex (NAR300 separate type) Order code Serial number Power supply voltage Manufacturing date NRR262 Order code Ser. no.

  • Page 19: Manufacturer Address

    NAR300 system for high temperature Incoming acceptance and product identification Manufacturer address Endress+Hauser Yamanashi Co., Ltd. 406-0846 862-1 Mitsukunugi, Sakaigawa-cho, Fuefuki-shi, Yamanashi Storage and transport 4.4.1 Storage conditions • Storage temperature: –20 to +60 °C (–4 to 140 °F) • Store the device in its original packaging.

  • Page 20: Installation

    Installation NAR300 system for high temperature Installation NAR300 system dimensions 5.1.1 Dimensions of NAR300 float sensor 200 (7.87) 250 (9.84) 304 (11.97) A0039905  7 Float sensor NAR300 dimensions Float sensor cover Endress+Hauser...
  • Page 21 NAR300 system for high temperature Installation 5.1.2 Dimensions of Ex d [ia] converter NRR261 Only NRR261 with JPN Ex explosion-proof specifications are delivered with a cable gland (external diameter of compatible cables: φ12 to 16 mm (0.47 to 1.02 in)).
  • Page 22 Installation NAR300 system for high temperature 5.1.3 Dimensions of Ex [ia] converter NRR262 NRR262 is designed for indoor installation, such as in an instrument room, and it can be mounted easily with two M4 screws. It can also be snapped into place with just one touch using DIN rail EN50022 (sold separately).
  • Page 23 G1/2 / NPT1/2: 85 mm (3.35 in), M25: 107 mm (4.21 in) U bolt (JIS F3022 B50 material: iron (chromate), 2 nut and 2 flat washer included) 4 φ12 mm (0.47 in) hole Use the order code of float sensor NAR300 to specify the conduit connection port. Endress+Hauser...

  • Page 24: Installation Conditions

    Installation NAR300 system for high temperature Installation conditions Sensor Input NRR262 Delay Power: Green Timer Alarm: Red (second) Power AC90-250V Output Monitor A0039906  11 NAR300 + NRR26x Alarm output Tank Junction box Divider U-shaped groove Screen Pit cover Float guide...
  • Page 25 9. If the pit is too large, divide the pit using an oil separator. Oil leakage cannot be detected unless the volume of oil outflow increases in proportion to the surface area. 10. NAR300, NRR261 and sensor I/F Ex box must be installed at least 50 cm (1.64 ft) apart from each other.

  • Page 26: Mounting Nar300 System

    When transporting NAR300, be sure to hold the float with both hands. Avoid holding the parts shown in the diagram below, and do not lift NAR300 by the top of the float sensor. In addition, do not rotate the housing. Doing so may cause device failure.
  • Page 27 5.3.2 Mounting the float guide NAR300 can be mounted onto a float guide that has been installed for existing products (CFD10, CFD30, UFD10, NAR291, NAR292). If the float guide is shorter than 2 000 mm (78.74 in), either cut and use it or follow the protocol for when it is 2 000 mm (78.74 in) or longer and contact your nearest Endress...
  • Page 28 Installation NAR300 system for high temperature 5.3.3 NAR300-x6xxxx and sensor I/F Ex box cable mounting Mounting process 1. Remove the intrinsically safe terminal box cover [5] and the circuit board guard [4]. 2. Pass the float sensor cable [2] through the cable gland [1] and the cable entry of the intrinsically safe terminal box.
  • Page 29 NAR300 system for high temperature Installation 5.3.4 NRR261-5xx cable mounting Mounting process 1. Remove the intrinsically safe terminal box cover [4] and the terminal block cover [3]. 2. Pass the float sensor cable [2] through the cable gland [1] and the cable entry of the intrinsically safe terminal box.

  • Page 30: Adjustment

    Installation NAR300 system for high temperature Adjustment 5.4.1 Verification of detection sensitivity with actual liquid Verification of detection sensitivity with water in the bottom layer and oil in the top layer When the tip of an electrode is pulled out from the water in the bottom layer, water may cling to the electrode tip like an icicle even when it is in the oil layer due to increased thickness of the oil layer, and this will increase the detection sensitivity by 1 to 2 mm.

  • Page 31: Electrical Connection

    Monitor A0039908  17 Wiring of Ex [ia] Converter NRR262-4/A/B/C Float sensor NAR300-x6xxxx (sensor I/F Ex box is also included in the code) Sensor I/F Ex box Ex [ia] Converter NRR262 Green, screw (M3) (see 1 below) Output to NRR262, screw (M3)
  • Page 32 4. Although cable (1) that connects NAR300 and a sensor I/F Ex box is included with the device, a cable (2) that connects a sensor I/F Ex box and NRR262 is not included, and it must be procured by the customer.

  • Page 33: Nrr261-5 Wiring

    A0039909  18 Wiring of Ex d [ia] Converter NRR261-5 Float sensor NAR300-x6xxxx (sensor I/F Ex box is also included in the code) Sensor I/F Ex box Ex d [ia] Converter NRR261 (separate type) Green, screw (M3) (see 1 below)
  • Page 34 5. The cable for connecting NAR300 and the sensor I/F Ex box (1) is included with NAR300. The cable (5) connecting the sensor I/F Ex box to the NRR261, the alarm output cable (2) from the NRR261, as well as the power cable (3) to the NRR261 are not included and must be procured by the customer.

  • Page 35: Wiring Diagram

    NAR300 system for high temperature Electrical connection Wiring diagram 　 A0039910  19 Wiring diagram Ex d-type converter system (integrated type) Intrinsically safe-type converter system (separate type) Protection earth (protective grounding) Conductivity detection electrode (sensor) Conductivity detection electrode (float) Dedicated cable...

  • Page 36: Operating Principles Of Alarm Activation

    NAR300 system for high temperature Operating principles of alarm activation The oil leak detection signal detected by the NAR300 float sensor is converted to a current signal in the converter or the sensor I/F Ex box. After this, it is connected to the current detection circuit via the Ex [ia] safety barrier in the converter.

  • Page 37: Troubleshooting

    NAR300 system for high temperature Troubleshooting Troubleshooting Fail-safe (alarm is output when there is no oil leak) There is a risk of an alarm being output due to the following causes even if there is no actual oil leak. Item...

  • Page 38: Operation Check

    Troubleshooting NAR300 system for high temperature Operation check 7.3.1 Operation check flowchart Start Remove the float Alarm sensor from pit and occurs in pit. clean the sensor. Remove H+ and H- Alarm occurs cables and confirm Transmitter failure a er returning sensor.
  • Page 39 NAR300 system for high temperature Troubleshooting Prior to performing an alarm operation check, take preemptive measures to ensure that the alarm system will not be impacted even if an oil leak alarm is activated. See the previous section "Operation check flowchart" for how to perform an operation check. The following diagram shows the voltage check point that was described in the flowchart.

  • Page 40: Firmware History

    7.3.3 Cleaning the conductivity sensor unit NAR300 is usually checked for conductivity between the electrode and the float body. Conductivity indicates that there is water; non-conductivity indicates that there is oil or air in the pit. Since the electrode holder is connected to the float body, if the holder becomes conductive with the tip of the electrode, it determines that "water"...

  • Page 41: Maintenance

    8.1.2 Periodic maintenance While the NAR300 float sensor is not easily affected by deposits or adhered material, conduct overall periodic inspections of the cable and wiring, etc., semi-annually along with an operation check as follows.

  • Page 42: Repair

    General information on repairs 9.1.1 Repair concept The Endress+Hauser repair concept assumes that the devices have a modular design and that repairs can be done by the Endress+Hauser Service Department or specially trained customers. Spare parts are contained in suitable kits. They also come with relevant replacement instructions.

  • Page 43: Return

    NAR300 system for high temperature Repair Return The requirements for safe device return can vary depending on the device type and national legislation. 1. Refer to the website for more information: http://www.endress.com/support/return-material 2. Return the device if repairs or a factory calibration are required, or if the wrong device was ordered or delivered.

  • Page 44: Accessories

    Remove any debris or stones so that the float sensor can land horizontally. The standard length of a float guide is 2 m (6.57 in); however, if you need a different length, contact your nearest Endress+Hauser Sales Center or distributor. 200 (7.87) (0.39)

  • Page 45: U-Bolt / Cable Gland

    NAR300 system for high temperature Accessories 10.2 U-bolt / cable gland (waterproof connection for JPNEx) The U-bolt (JIS F3022 B50) is used when mounting a converter. Have a spare 50A (2B φ60.5 mm (198.5 in)) pipe ready. Tighten and secure the cable gland after inserting the cable from NAR300.

  • Page 46: Index

    Index NAR300 system for high temperature Index Symbols Application ....... . . 7 Safety Instructions Basic .
  • Page 48 *71631470* 71631470 www.addresses.endress.com...

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