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Prothermo NMT81
Endress+Hauser Prothermo NMT81 User Manual
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Operating Instructions
Prothermo NMT81
Tank Gauging
BA02094G/00/EN/01.21
71517024
2021-06-08
Valid as of version
01.00.00.zz (Device firmware)
2
Table of Contents
Default Chapter
3
Table of Contents
3
1 About this Document
5
Document Function
5
Document Conventions
5
Documentation
7
Registered Trademarks
8
2 Basic Safety Instructions
9
Requirements for the Personnel
9
Designated Use
9
Workplace Safety
9
Operational Safety
9
Product Safety
10
3 Product Description
11
Product Design
11
4 Incoming Acceptance and Product
12
Identification
12
Incoming Acceptance
12
Product Identification
12
Manufacturer Contact Address
13
Storage and Transport
13
5 Installation
14
Converter
14
Option 1: Converter with Universal Coupling
14
Option 2: Converter with M20 Mounting Thread
15
Converter + Average Temperature Probe Version
16
Converter + Average Temperature Probe + Water Bottom Probe
17
Flanges
19
Element No. 1 Position
20
WB Probe Design
21
Pre-Installation of NMT81
23
Installation Procedure
24
Mounting NMT81 on a Cone Roof Tank
27
Mounting NMT81 on a Floating Roof Tank
32
Mounting NMT81 on a Pressurized Tank
36
6 Electrical Connection
37
NMT81 (Ex Ia) Intrinsically Safe Connection
37
NMT81 Transmitter and Element Connection
38
Nms8X/Nmr8X/Nrf81 (Ex D [Ia]) Intrinsically Safe Connection
38
NMS5 (Ex D [Ia]) Intrinsically Safe Connection
39
NRF590 Terminals
40
Mechanical Connection for Converter-Only Version
41
Wiring Connection for Converter-Only Version
43
7 Operability
45
Overview of the Operation Options
45
Structure and Function of the Operating Menu
45
Operation Via HART Master Connecting with Devices
47
Display of NMT81
47
Operating Keys and DIP Switches on the Electronic Insert
48
Configuring NMT81 with NMS5/NMS7/NRF590
52
Configuring NMT81 with Nms8X/Nmr8X/Nrf81
52
Access to the Operating Menu Via the Operating Tool
58
8 System Integration
60
Overview of the Device Description Files (DTM)
60
Measured Variables Via HART Protocol
60
9 Commissioning
61
Terms Related to Temperature Measurement
61
Initial Setting
62
Initial Screen
62
Guidance
64
10 Operation
71
Compatibility Mode of Nmt53X and NMT81
71
System
87
11 Diagnostics and Troubleshooting
92
System Error Messages
92
Diagnostic Event
92
Diagnostics
97
12 Maintenance
102
Maintenance Tasks
102
Endress+Hauser Services
102
13 Repair
103
General Information on Repairs
103
Spare Parts
104
Endress+Hauser Services
104
Return
104
Disposal
104
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Brief Operating Instructions
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Endress+Hauser Prothermo NMT81 Specifications
General
Brand
Endress+Hauser
Model
Prothermo NMT81
Category
Measuring Instruments
Language
English
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