NMR81 Radar Level Transmitter Spare Parts List Overview

The NMR81 radar level transmitter is widely used in industrial level measurement, and its spare parts management is crucial for equipment maintenance. This article compiles a list of common spare parts for the NMR81 and its series products (NRF81, NMR84, NMS80/NMS81/NMS83), including order numbers, specification descriptions, and applicable housing models. The following spare parts are categorized by function for quick location by engineering technicians and procurement personnel.

Seals and O-rings Spare Parts

Seals are key to ensuring the protection level of the level transmitter and need regular inspection and replacement. Below are common sealing spare parts and their parameters.

O-ring

  • Order number: 71312582
  • Material: FVMQ, PTFE coated
  • Applicable housing: F35/36/37/38
  • Applicable models: NRF81, NMR81/NMR84, NMS80/NMS81/NMS83

O-ring (for blind plug)

  • Order number: 71312594
  • Applicable housing: F35/36/37/38
  • Applicable models: NRF81, NMR81/NMR84, NMS80/NMS81/NMS83

Seal (process connection)

Seals for NMR81 process connection, different specifications correspond to different flange standards.

Order number Specification Material Applicable models
71285499 DN50 PN10-16 FKM NMR81
71285501 DN80 PN10-40 FKM NMR81
71285503 ASME 3" 150lbs / JIS 80A 10K FKM NMR81

Housing and Structural Spare Parts

The housing components protect internal electronic parts. The following spare parts are used for housing sealing, filtering, and front cover maintenance.

Housing filter

  • Order number: 71312589
  • Composition: 1x pressure compensation plug M18 (316L), 1x filter plug M12 (316L), 1x pressure compensation filter
  • Applicable housing: F36/38
  • Applicable models: NMR81/NMR84

Blind plug

  • Order number: 71312592
  • Composition: blind plug, O-ring 18.0x2.0
  • Applicable housing: F35/36/37/38
  • Applicable models: NRF81, NMR81/NMR84, NMS80/NMS81/NMS83

Aluminum front panel (sight glass)

  • Order number: 71312596
  • Material: aluminum
  • Composition: cover, O-ring FVMQ (PTFE coated)
  • Applicable housing: F35/36
  • Applicable models: NRF81, NMR81/NMR84, NMS80/NMS81/NMS83

Front cover

  • Order number: 71312607
  • Material: 316L
  • Composition: O-ring EPDM (pre-assembled)
  • Applicable housing: F37/38
  • Applicable models: NMR81/NMR84, NRF81, NMS81/NMS83

Front cover clamp

  • Order number: 71312627
  • Applicable housing: F35/36/37/38
  • Applicable models: NRF81, NMR81/NMR84, NMS80/NMS81/NMS83

Weather protection cover

  • Order number: 71292751
  • Material: 316L
  • Applicable models: NMR81/NMR84, NRF80/NRF81

Electrical and Display Module Spare Parts

Electrical modules and display units are core functional components of the level transmitter. When selecting, attention must be paid to compatibility with the main unit.

Terminal block (I/O module)

Provides both plug-in and screw-type terminal blocks, both including complete terminal kits.

Order number Type Applicable models
71324756 Plug-in NRF81, NMR81/NMR84, NMS80/NMS81/NMS83
71324757 Screw-type NRF81, NMR81/NMR84, NMS80/NMS81/NMS83

Display panel kit

  • Order number: 71312638
  • Composition: operation module A300, optical button, display bracket, fixing ring, cover
  • Applicable models: NRF81, NMR81/NMR84, NMS80/NMS81/NMS83

Display panel fixing parts

  • Order number: 71312640
  • Composition: fixing ring, bracket
  • Applicable models: NRF81, NMR81/NMR84, NMS80/NMS81/NMS83

Mainboard and I/O module

The mainboard and I/O module must be ordered according to the specific model and selection code. Below are the basic order number prefixes.

  • Mainboard: XPN0036-, applicable to NRF81, NMR81/NMR84, NMS80/NMS81/NMS83
  • I/O module: XPN0031-, applicable to NRF81, NMR81/NMR84, NMS80/NMS81/NMS83

The selection code includes multiple alphanumeric combinations, such as A, AA, BC, BE, CA, etc. Specific codes need to refer to the product sample or consult the manufacturer. Common code examples are as follows:

  • Mainboard codes: A, AA, BC, BE, CA, CC, CE, FC, FE, GC, GE, IC, IE, JC, JE, KC, KE, MC, ME, NC, NE, TA, TC, TE, UC, UE, UR, YY, B, D, E, Y, ICR, ICW, ICX, ITA, ITC, LTA, LTC, NTA, NTC, PTA, PTC, YYY, AA, AB, AC, AD, AE, AF, AG, AH, AI, AJ, AK, AL, AM, AN, AO, AP, AQ, AR, AS, AT, E9, L9, LA, LC, LK, LL, LT, LU, 74, 75, 76, 78
  • I/O module codes: A, B, C, D, E, AA, BC, BE, CA, CC, CE, FC, FE, GC, GE, GR, IC, IE, JC, JE, KC, KE, MC, ME, NC, NE, TA, TC, TE, UC, UE, UR, ICR, ICW, ICX, ITA, ITC, NTA, NTC, PTA, PTC, YYY, AR, L9, LA, LC, LK, LL, LT, LU

Nameplate and Identification Spare Parts

Change nameplate is used to fill in the new order number after modification of non-explosion-proof instruments.

  • Order number: 71067434
  • Description: blank nameplate
  • Purpose: fill in new order number after modification of non-Ex instruments
  • Applicable models: FMB50/FMB51/FMB52, FMR230/FMR231, FMR240/FMR244/FMR245, FMR250, FMR530/FMR532, FTL50/FTL50H/FTL51/FTL51C/FTL51H, FTL70/FTL71, FTL80/FTL81/FTL85, NMR81, PMC51, PMC71, PMP51/PMP55

Spare Parts Selection and Ordering Notes

When ordering spare parts, please be sure to check the instrument model, housing type, and selection code to ensure compatibility. It is recommended to refer to the product sample or contact the manufacturer for the latest information. For the mainboard and I/O module, the selection code may be updated with product versions; please refer to the actual label.