Endress+Hauser LT5 Operating Instructions Manual
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Endress+Hauser LT5 Operating Instructions Manual

Endress+Hauser LT5 Operating Instructions Manual

Float level gauge
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BA01264G/00/EN/05.19
71470634
2019-12-20
Products
Operating Instructions
LT5
Float level gauge
Solutions
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Summary of Contents for Endress+Hauser LT5

  • Page 1 Products Solutions Services BA01264G/00/EN/05.19 71470634 2019-12-20 Operating Instructions Float level gauge...
  • Page 2 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

    11.5 Installation / enclosed accessories ..Installing LT5 ......15 11.6 Anchor weight .

  • Page 4: About This Document

    A terminal that must be connected to the ground prior to establishing any other connections Equipotential connection This connects with the grounding system at the plant. It includes equipotential line and single-point ground systems, depending on the norms of each country or company. Endress+Hauser...
  • Page 5 Reference to page Reference to graphic Notice or individual step to be noted … Series of steps Result of operation or commissioning Help in the event of a problem Visual inspection Operation via local display Operation via operating tool Write-protected parameter Endress+Hauser...

  • Page 6: Related Documentation

    Technical information contains all the technical data on the device and provides an overview of the accessories and other products that can be ordered for the device. Device Technical information Float level gauge LT5 TI01167G 1.3.2 Operating instructions (BA) Operating instructions contain all the information required during various phases of the...

  • Page 7: Basic Safety Instructions

    Observe the limit values in the "Technical Information". The manufacturer is not liable for damage caused by improper or non-designated use. Workplace safety For work on and with the device: ‣ Wear the required personal protective equipment according to local/national regulations. Endress+Hauser...

  • 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 Designated use Float level gauge LT5 is an important measuring instrument in the process industry. The structure does not require a power source and it is easy to install. Since it can be used for high-precision liquid level measurement and remote indication detection, it is ideal for the following operations: •...
  • Page 10 ): 0.5 ≤ ρ < 0.94 type Low-pressure Weight: 2.4 kg ρ: Density limit (g/cm ): 0.94 ≤ ρ < 2.0 type Indicator coupling LT5-1 Coupling: Penetration shaft (coupling between gauge head and (Threaded type, low-pressure indicator) type) LT5-4 Coupling: Pressure bulkhead magnet coupling...

  • Page 11: List Of Material Specifications

    Stainless steel Symbol Description SUS304 Stainless steel (18Cr-8Ni) SUS316 Stainless steel (18Cr-12Ni-2.5Mo) SCS13 Stainless steel cast steel equivalent to SUS304 SCS14 Stainless steel cast steel equivalent to SUS316 Others Symbol Description SGP (Galvanized pipe) Carbon steel pipe Polyvinyl chloride Endress+Hauser...

  • Page 12: Delivery Examples

    The packing method varies depending on the order codes. The sheave elbow is delivered separately for flange type. A0039945  1 Packing layout Gauge supporter Anchor hook sheave elbow Top anchor Guide wires Measuring tape Gauge head Float (below the gauge head) Endress+Hauser...

  • Page 13: 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 any one of these conditions is not met, contact your Endress+Hauser Sales Center. Product identification The following options are available for the identification of the device: •...

  • Page 14: Manufacturer Contact Address

    Incoming acceptance and product identification Manufacturer contact 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 +70 °C (–4 to 158 °F) • Store the device in its original packaging.

  • Page 15: Installation

    4-M10 Ø140 Ø400 (15.74) (5.51) A0041186  3 LT5-1 / float dimensions. Unit of measurement mm (in) Gauge head (ADC12) Float φ140 (SUS316) Float φ400 (SUS316) Float φ140 (PVC) E float φ400 (PVC) 1 union nut (select from JIS Rc 1-1/2 / ANSI NPT 1-1/2; use Rp 1-1/2 if there is no union nut)
  • Page 16 90 ° sheave elbow (select from ADC6 / SCS14) Thread (select from options Rp1-1/2 / NPT1-1/2) Flange (select from JIS 10K 40A FF / ASME NPS1-1/2" Cl.150 FF / JPI 40A 150 lbs FF) The 75 mm seal pot 98/75 shows dimensions of SUS316 specification. Endress+Hauser...
  • Page 17 4-M10 Ø140 (5.51) Ø400 (15.74) A0041187  6 Dimensions of LT5-1. Unit of measurement mm (in) Gauge head (ADC12) Float φ140 (SUS316) Float φ400 (SUS316) Float φ140 (PVC) Float φ400 (PVC) Flange (select from JIS 10K 40A RF / ASME NPS1-1/2" Cl.150 RF / JPI 40A 150lbs RF) (0.43)
  • Page 18 Flange (select from JIS 10K 40A RF / ASME NPS1-1/2" Cl.150 RF / JPI 40A 150lbs RF) Flange (select from JIS 10K 40A FF / ASME NPS1-1/2" Cl.150 FF / JPI 40A 150 lbs FF) • Tape only: 960 mm (37.8 in) • Tape + wire: 1 500 mm (59.06 in) Endress+Hauser...
  • Page 19 90 (3.54) (0.18/0.16) 40 (1.57) 32 (1.26) A0041193  9 Dimensions of LT5-4. Unit of measurement mm (in) Gauge head (AC4CT6) Gate valve (SCS13) Top anchor (AC4CT6) 135 ° sheave elbow (AC4CT6) 90 ° sheave elbow (AC4CT6) Anchor hook (select from iron / SUS316) Gauge supporter (select from iron / SUS304) Flange (select from JIS 10K 40A RF / ASME NPS 1-1/2"...
  • Page 20 4.5/4 (0.18/0.16) 40 (1.57) 32 (1.26) A0041194  10 Dimensions of LT5-6. Unit of measurement mm (in) Gauge head (iron) Gate valve (SCS13) Top anchor (select from iron / SUS316) Float (SUS316) 135 ° sheave elbow (iron) 90 ° sheave elbow (iron)

  • Page 21: Installation Preparation

    Rapid injection of liquid near the float may cause the tape to sever. A0039946  11 Installation conditions Center of the float Wave guard installation Tank Liquid inlet Endress+Hauser...

  • Page 22: Tools

    Installation Tools Prepare the following tools to install LT5. Tools to be prepared LT5-1 LT5-1 Tools Intended use LT5-4 LT5-6 (threaded) (flange) 13 mm: For sheave elbow cover 24 mm: For sheave elbow cover 17 mm: For the main body for device supporter 24 mm: For the main body for device supporter ...

  • Page 23: Welding For Gauge Supporter

    Refer to the following diagram when welding a gauge supporter. Note that pipe supporters are not supplied. Compared to LT5-1 (low-pressure gauge head) / LT5-4 (medium-pressure gauge head), the distance between the outer tank wall and the center of the gauge head is 15 mm (0.59 in) longer for LT5-6 (high-pressure gauge head).
  • Page 24 Gauge supporter for high pressure. Unit of measurement mm (in) Pipe supporter (not supplied) Center line for installation Gauge supporter (based on the selected option SS400: t = 4.0 / SUS304: t = 4.0), installation bolt Center line of the gauge supporter Endress+Hauser...

  • Page 25: Guide Pipe

    • Sheave elbow to tank roof Precautions regarding installation • Guide pipes and pipe supporters are not supplied by Endress+Hauser. • The angle of the guide pipe must be 5 mm (0.17 in) or less. • The maximum distance between two sheave elbows (pipe distance) must be 2.5 m (8.2 ft).
  • Page 26 A0041182  24 Guide pipe connection Bend due to welding Welding Welding burr Burr Bent thread Vertical Ensure that there is no welding burr in the inside Chamfering Endress+Hauser...

  • Page 27: Top Anchor And Anchor Hook Installation

    Tank top Leveling line Plumb Socket (threaded type) 440 (8.66) 220 (8.66) 220 (8.66) 440 (8.66) A0041185  26 Installation of anchor hook. Unit of measurement mm (in) 1-1/2B socket 1B socket Tank top Guide wire (single wire) Anchor hook Endress+Hauser...

  • Page 28: Measuring Tape And Wire Lengths

    060 for each option of specification 070. However, note that the maximum length that can be displayed on the display of the LT5 gauge head simply corresponds to the measurement range. See the following tables and select the appropriate length accordingly.
  • Page 29 (measurement tape length) 60 ft 167.31 ft 69.89 ft 98.42 ft Contact Endress+Hauser 100 ft 249.33 ft 108.26 ft 141.07 ft Contact Endress+Hauser 4. Measuring tape SUS316 + Wire SUS316, FRT Length (total Perforated tape Non- Wire...
  • Page 30 Measuring tape and wire (example: option 1 for specification 070 and option 5 for specification 060) Perforated tape Non-perforated tape / wire In the above diagram, the maximum measurement distance is 22 mmand the maximum clearance is 23 m. Because of this, the total length of the measuring tape is 45 m. Endress+Hauser...

  • Page 31: List Of Sealing Materials

    Installation List of sealing materials 5.8.1 Wetting liquid and gas parts Products Units Parts name Name of sealing parts Packing materials / o-ring LT5-1 Gauge head Rear cover Rear packing V#6502 Check shaft O-ring Sprocket shaft Oil seal Blind board Packing 90 °...

  • Page 32: Inspection Certificate

    • Stainless steel guide wire (excluding PFA-coated wire) • Stainless steel anchor hook • Iron high-pressure sheave elbow main body (the flange is the same, as it is integrated with the sheave elbow main body), cover • Stainless steel gate valve Endress+Hauser...

  • Page 33: General View Of Standard Specifications And Order Codes

    Installation on a cone roof tank (CRT). Unit of measurement mm (in) Anchor hook Top anchor Measuring tape Float Guide wires Welded part (welded to the tank) Anchor hook Guide wires Bolt Washer 90 ° sheave elbow Gauge supporter Gauge head Endress+Hauser...
  • Page 34 Installation Order code (LT5-111A031B11A111200000+PA) Items Purpose Code Spec. ntity Gauge head 0.01961 MPa/2.84 psi, aluminum (ADC12) Gauge head process connection Rc 1-1/2, union nut, SUS316, thread JISB0203 Display; cover Dial display: acrylic Crank unit None Measuring range 10 m Measuring tape...
  • Page 35 Installation at tank top for underground tank 153 (6.02) (17.32) A0041197  29 Installation for underground tank, unit. Unit of measurement mm (in) Anchor hook Top anchor Measuring tape Float Guide wires Welded part (welded to the tank) Anchor hook Guide wires Bolt Washer Endress+Hauser...
  • Page 36 Installation Order code (LT5-111C022B11A100000000) Items Purpose Code Spec. ntity Gauge head 0.01961 MPa/2.84 psi, aluminum (ADC12) Gauge head process connection Rc 1-1/2, union nut, SUS316, thread JISB0203 Display; cover Reverse installation, dial display, acrylic Crank unit None Measuring range Measuring tape...
  • Page 37 Installation of seal pot for CRT. Unit of measurement mm (in) Anchor hook Top anchor Measuring tape Float Guide wires Welded part (welded to the tank) Anchor hook Guide wires Bolt Washer Seal pot 90 ° sheave elbow Gauge supporter Gauge head Endress+Hauser...
  • Page 38 Installation Order code (LT5-11AA023B1BA21A1000F0+PA) Items Purpose Code Spec. ntity Gauge head 0.01961 MPa/2.84 psi, aluminum (ADC12) Gauge head process connection 10K 40A RF, aluminum (AC4A), flange JIS B2220 Display; cover Dial display: acrylic Crank unit None Measuring range Measuring tape...
  • Page 39 • Adjust contact point C in the diagram so that it is approximately 10 mm (0.39 in) below the sheave elbow when the liquid level is 0 and approximately 100 mm (3.94 in) in relation to the gauge head when full. Endress+Hauser...
  • Page 40 Installation Order code (LT5-11AA025H1NC41A1000N0+PA) Items Purpose Code Spec. ntity Gauge head 0.01961 MPa/2.84 psi, aluminum (ADC12) Gauge head process connection 10K 40A RF, aluminum (AC4A), flange JIS B2220 Display; cover Dial display: acrylic Crank unit None Measuring range Measuring tape...
  • Page 41 Compact cone roof tank for guide pipe method 950 (37.4) Ø140 (5.51) A0041200  32 Installation on a compact cone roof tank. Unit of measurement mm (in) Ventilation hole Measuring wire Guide pipe (stillwell) Float 90 ° sheave elbow Gauge supporter Gauge head Endress+Hauser...
  • Page 42 Installation Order code (LT5-111A021L000011200000+PA) Items Purpose Code Spec. ntity Gauge head 0.01961 MPa/2.84 psi, aluminum (ADC12) Gauge head process connection Rc 1-1/2, union nut, SUS316, thread JISB0203 Display; cover Dial display: acrylic Crank unit None Measuring range Measuring tape Measuring tape, CRT Float D 140 mm SUS316 tape connection2.4 kg,...
  • Page 43 Installation 5.10.6 Tank top installation using guide pipe method Ø140 (5.51) A0041201  33 Tank top installation, unit. Unit of measurement mm (in) Gauge head Gauge supporter Ventilation hole Triangle bracket for measuring wire Guide pipe (stillwell) Float Endress+Hauser...
  • Page 44 Installation Order code (LT5-111C022L000000000000+PA) Items Purpose Code Spec. ntity Gauge head 0.01961 MPa/2.84 psi, aluminum (ADC12) Gauge head process connection Rc 1-1/2, union nut, SUS316, thread JISB0203 Display; cover Reverse installation, dial display, acrylic Crank unit None Measuring range Measuring tape...
  • Page 45 Gas holder Ø6 (0.24) (0.2) (9.84) A0041202  34 Installing gas holder. Unit of measurement mm (in) Gas holder wire hook Triangle bracket for measuring wire Wire guide socket 90 ° sheave elbow Measuring tape Gauge supporter Gauge head Endress+Hauser...
  • Page 46 Installation Order code (LT5-111A0340000011200000+PAPFPH) Items Purpose Code Spec. ntity Gauge head 0.01961 MPa/2.84 psi, aluminum (ADC12) Gauge head process connection Rc 1-1/2, union nut, SUS316, thread JISB0203 Display; cover Dial display: acrylic Crank unit None Measuring range 10 m Measuring tape...
  • Page 47 Triangle bracket for measuring wire Roof stand Wire guide socket FRT wire guide metal Guide bar: φ16 mm (0.63 in) Stainless steel wire (accessory) Pipe end: 1 Sch 40 to 80 90 ° sheave elbow Measuring tape Gauge supporter Gauge head Endress+Hauser...
  • Page 48 Installation Order code (LT5-111A054E000011200000+PAPEPF) Items Purpose Code Spec. ntity Gauge head 0.01961 MPa/2.84 psi, aluminum (ADC12) Gauge head process connection Rc 1-1/2, union nut, SUS316, thread JISB0203 Display; cover Dial display: acrylic Crank unit None Measuring range 20 m Measuring tape...
  • Page 49 Installation on a dome roof tank for medium pressure. Unit of measurement mm (in) Anchor hook Top anchor Measuring tape Float Guide wires Stainless steel wire (accessory) Anchor hook Guide wires Bolt Washer Gate valve 90 ° sheave elbow Gauge supporter Gauge head Endress+Hauser...
  • Page 50 Installation Order code (LT5-44AB151R4AA24A200001+PA) Items Purpose Code Spec. ntity Gauge head 0.09807 MPa/14.22 psi, aluminum (AC4CT6) Gauge head process connection 10K 40A RF, aluminum (AC4CT6), flange JIS B2220 Display; cover Dial display; glass + iron Crank unit Selected Measuring range...
  • Page 51 Installation on a spherical tank for high pressure. Unit of measurement mm (in) Anchor hook Top anchor Float Guide wires Measuring tape Welded part (welded to the tank) Anchor hook Guide wires Bolt Washer Gate valve 90 ° sheave elbow 135 ° Gauge supporter Gauge head Endress+Hauser...
  • Page 52 Installation Order code (LT5-66GB153R6GA26G16G204+PC) Items Purpose Code Spec. ntity Gauge head 2.45 MPa/355.25 psi, iron (SCPL1) Gauge head process connection 20K 40A RF, iron, flange JIS B2220 Display; cover Dial display; glass + iron Crank unit Selected Measuring range 20 m...

  • Page 53: Guide Wire Installation

    4. Extend the guide wire at the tank top again and secure it in place. 5. Bend the end of the guide wire against the main shaft and cut it off, leaving approx. 100 mm. 6. Tighten the end nuts [1] and [2]. Endress+Hauser...
  • Page 54 Installation 7. Tighten nut [3] and release the spring.  A0041207  39 Guide wire installation 2. Unit of measurement mm (in) Nut 1 Nut 2 Nut 3 This completes the guide wire installation process. Endress+Hauser...

  • Page 55: Measuring Tape And Measuring Wire Installation

    3. Install the measuring tape so that it does not become twisted inside the guide pipe. This completes the preparation for the measuring tape installation. A0041208  40 Measuring tape preparation. Unit of measurement mm (in) Perforation sheave elbow Cover Endress+Hauser...
  • Page 56 Installation of measuring tape: for a measuring tape. Unit of measurement mm (in) Guide pipe A0041210  42 Installation of measuring tape and measuring wire: for a measuring tape + measuring wire. Unit of measurement mm (in) Guide pipe Endress+Hauser...
  • Page 57 6. Flatten the protruding screw thread of the bolt with pliers to lock the nut. This completes the process of connecting the measuring tape and float. A0041211  43 Connecting the measuring tape and the float. Unit of measurement mm (in) Measuring tape clamp Screw thread Endress+Hauser...
  • Page 58 Top of the float Measuring wire hook Roof stand Wire guide socket FRT wire guide metal Guide bar: φ16 mm (0.63) Stainless steel wire (accessory) Pipe end: 1 Sch 40-80 90 ° sheave elbow Measuring tape Gauge supporter Gauge head Endress+Hauser...
  • Page 59  For detailed connection instructions →  57. 10. Check to make sure that the measuring tape is not twisted. 11. Close the sheave elbow cover. 12. Tighten the gland by following the diagram below. This completes the installation process. Endress+Hauser...
  • Page 60 Installation A0041212  45 Gland fixing tool Before tightening After tightening O-ring Gland Gland fixing tool A0041213  46 LT parts configuration Measuring tape Sprocket Tape drum Tape-holding thread Locking screw Tape guide Dust protector Endress+Hauser...
  • Page 61 Installation A0041214  47 Measuring tape installation Guide wires Measuring tape Once the measuring tape is connected to the gauge head, cut off the rest, leaving approximately 1.5 m (4.92 ft) from the float joint. Endress+Hauser...
  • Page 62 This completes the tape guide adjustment process. 2 (0.08) 2 (0.08) A0041216  49 Tape guide adjustment. Unit of measurement mm (in) Sprocket Measuring tape Installation screws Measuring tape Tape guide Endress+Hauser...
  • Page 63 Coil the tape around the conster drum (large) the exact number of times required based on the calculation. 5. Close the gauge head cover. 6. Close the gland of LT5-4 or LT5-6 rear cover. This completes the conster installation process. Tank height (measuring span) - Actual liquid level Number of turns = 0.6 (unit: m)

  • Page 64: Liquid Sealant For Seal Pot

    LT with seal pot. Unit of measurement mm (in) Anchor hook Top anchor Measuring tape Float Guide wires Welded part (welded to the tank) Anchor hook Guide wires Bolt Washer Seal pot 90 ° sheave elbow Gauge supporter Gauge head Endress+Hauser...
  • Page 65 A0041219  52 Filling the seal pot with liquid sealant Scale for liquid sealant To the LT5 side To the tank 90 ° sheave elbow 4. Fill up to the middle of the scale for liquid sealant. 5. Close the 90 ° sheave elbow cover.
  • Page 66 3. Drain the liquid sealant from the seal pot. 4. Open the 90 ° sheave elbow cover.  A0041230  54 Draining liquid sealant To the LT5 side sheave elbow 90 ° sheave elbow 90 ° sheave elbow cover Drain plug Container that is 2 l or larger 5.
  • Page 67 Installation A0041220  55 Filling the seal pot with liquid sealant Scale for liquid sealant To the LT5 side To the tank Liquid sealant 90 ° sheave elbow cover Endress+Hauser...

  • Page 68: Setting

    1 mm (0.04 in) units are read using the inner scale and the short needle. Tightening torque: 0.315 N/m This completes the indicator setting and scale reading process. A0041231  56 Dial display (5 m (16.4 ft) scale plate) Long needle (white) Example: 10 mm (0.34 in) site Short needle (green) Cap nut Endress+Hauser...

  • Page 69: Counter Display

    (Example) • Yellow: 14 000 mm (551.18 in) • Black: 13 999 mm (551.14 in) Endress+Hauser...

  • Page 70: Indicator Adjustment

    Lf in 2 above. Correction amount for level indication for deviation D² caused by float installation Lx = - S² Diameter of a spherical tank, etc. Deviation distance from the center of the tank to the center of the float (mm) Endress+Hauser...
  • Page 71 Equation: For LT5-1 5 000 g (11.02 lb) with a φ400 mm (15.75 in) float Float draft when the tank is empty W - T ρ...
  • Page 72 Ø400 (15.74) A0041238  59 Graph of LT5-1 φ400 mm (15.75 in) float: Density limit ρ (g/cm3). Measurement unit: mm (in) Draft surface at density ρ Water (draft surface at density 1.0 g (0.002 lb)/cm Equation: For LT5-1 2 100 g (4.63 lb) with a φ140 mm (5.51 in) float Change the values used in the equation according to the float.
  • Page 73 Indicator value when the tank is filled with water. Measurement unit: mm (in) Draft surface at density ρ Water (draft surface at density 1.0 g (0.002 lb)/cm Equation: For LT5-4/LT5-6 8 300 g (18.30 lb) with a φ400 mm (15.75 in) float Float draft when the tank is empty W - T ρ...
  • Page 74 (with actual liquid) Ø400 (15.74) Ø400 (15.74) A0041243  61 Graph of LT5-4/LT5-6 φ400 mm (15.75 in) float: Density limit ρ (g/cm ). Measurement unit: mm (in) Draft surface at density ρ Water (draft surface at density 1.0 g (0.002 lb)/cm Endress+Hauser...

  • Page 75: Handling Precautions For Water-Filling/ Airtightness Tests And Initial Operation Of The

    This will damage the measuring tape. • Be sure to open the gate valve when filling the tank with actual liquids such as liquefied gas. Closing the gate valve must be restricted to emergencies or when the surface level is static. Endress+Hauser...

  • Page 76: Operation

    Using a hoist handle 7.2.1 Hoist handle (for LT5-1) The hoist handle is used to hoist up the float when you are not measuring the surface level. This helps to add life to LT when utilized for tanks with a stirrer and/or for tanks containing corrosive liquid.
  • Page 77 4. Remove the handle when the lowering operation is complete. This completes the lowering process. 210 (8.28) 50 (1.97) 10 (0.39) A0041245  63 Hoist handle (LT5-1). Unit of measurement mm (in) Wing bolt 1 Stopper Wing bolt 2 Knob Puller Handle...
  • Page 78 Operation 7.2.2 Hoist handle (for LT5-4/LT5-6) The hoist handle is used to hoist up the float when you are not measuring the surface level. This helps to add life to LT when utilized for tanks with a stirrer and/or for tanks containing corrosive liquid.

  • Page 79: Diagnostics And Troubleshooting

    The spring in check has deteriorated Replace the spring. Drive checker does not work (LT5-4/LT5-6) The set screw of the check handle is loose Tighten the set screw. Breakage of check driver spring Replace the entire check unit.

  • Page 80: Maintenance

    10 minutes or longer 10 minutes or longer tetrachloride minutes or minutes or longer longer 50 m³ 5000 m³ 10 m³ (11.81) (8.2) Unit of 17.84 measurement mm (in) (58.53) Unit of measurement mm (in) Unit of measurement mm (in) Endress+Hauser...

  • Page 81: Routine Checks

    Gauge head Inspection of the drive checker unit Check the condition and performance of the checker spring inside the (LT5-4/LT5-6) gauge head. Inspection of magnet coupling Replace the sprocket to strip the rust and remove the dust (1 to 2 times a year).

  • Page 82: Replacement Of O-Ring In The Transmitter (Lt5-4/Lt5-6)

    Maintenance Replacement of o-ring in the transmitter (LT5-4/ LT5-6) If gas begins leaking from the gauge head, o-rings must be replaced. The following steps must be performed carefully due to the tank being under pressure from within. Replacement procedure 1. Close the gate valve at the top of the tank.

  • Page 83: Drive Checker Replacement (Lt5-4/Lt5-6)

    Maintenance Drive checker replacement (LT5-4/LT5-6) The drive checker unit is an important mechanism for checking the performance of LT. It is prone to wear and tear as it is used frequently. It is designed so that each part can be replaced easily if it becomes worn.
  • Page 84 Maintenance A0041249  67 Drive check unit Gland clamp Seal metal Endress+Hauser...

  • Page 85: Repair

    General information on repairs 10.1.1 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 included in appropriate kits. They contain the related replacement instructions.

  • Page 86: Return

    The device must be returned if it is in need of repair or a factory calibration, or if the wrong device has been delivered or ordered. According to legal regulations, Endress+Hauser, as an ISO-certified company, is required to follow certain procedures when handling returned products that have come into contact with measured materials.

  • Page 87: Accessories

    A hoist handle is attached to the gauge head and enables the float to be raised or lowered manually. This prevents the float and measuring tape from becoming damaged in areas with poor measuring conditions, such as a tank with a stirrer, by hoisting it up before the measurements are taken. A0041258  68 Hoist handle Endress+Hauser...

  • Page 88: Seal Pot

    AC4A+SGP galvanized pipe / SUS316 / PVC 280 (11.02) 330 (12.99) (3.15) (3.15) 120 (4.72) A0041259  69 Seal pot. Unit of measurement mm (in) Seal pot (SUS316/SGP/AC4A) Seal pot (PVC) The 75 mm (2.95 in) for seal pot 98/75 is the dimension for SUS316. Endress+Hauser...

  • Page 89: Gauge Supporter

    A gauge supporter is used for attaching to the outer wall of the tank. Note that pipe supporters are not supplied. Compared to LT5-1 (low-pressure gauge head) / LT5-4 (medium-pressure gauge head), the distance between the outer tank wall and the center of the gauge head is 15 mm (0.59 in) longer for LT5-6 (high-pressure gauge head).
  • Page 90 Gauge supporter for high pressure. Unit of measurement mm (in) Pipe supporter (not supplied) Center line for installation Gauge supporter (based on the selected option SS400: t = 4.0 / SUS304: t = 4.0), installation bolt Center line of the gauge supporter Endress+Hauser...

  • Page 91: Guide Pipe

    • Sheave elbow to tank roof Precautions regarding installation • Guide pipes and pipe supporters are not supplied by Endress+Hauser. • The angle of the guide pipe must be 5 mm (0.17 in) or less. • The maximum distance between two sheave elbows (pipe distance) must be 2.5 m (8.2 ft).

  • Page 92: Installation / Enclosed Accessories

    LT5-4 and LT5-6. Dust protector Prevents dust caused by iron pipe work from entering the gears inside the gauge head. Supplied as a standard product for LT5-4 and LT5-6. Conster hoisting drum This is an aluminum conster drum option.

  • Page 93: Anchor Weight

    When an anchor weight is required, order it TSP (special order). Ø 2-13 40 (1.57) 500 (19.7) 15 (0.59) 440 (17.32) 30 (1.18) 40 (1.57) (2.76) A0041260  73 Anchor weight. Unit of measurement mm (in) Anchor hook Anchor weight Endress+Hauser...

  • Page 94: Wire Guide Metal And Wire Guide Socket

    Wire guide metal and wire guide socket. Unit of measurement mm (in) Wire guide metal Wire guide socket Roof stand Ø6 (0.24) (0.2) A0041262  75 Wire hook / wire guide socket. Unit of measurement mm (in) Wire hook Wire guide socket Endress+Hauser...

  • Page 95: Index

    Disposal ........86 Endress+Hauser services Repair ....... . . 85 Product safety .
  • Page 96 *71470634* 71470634 www.addresses.endress.com...

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