Panametrics DewPro MMR101 User manual

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Moisture
A40251516 Rev. B
July 2020
DewProMMR101
High-Temperature Moisture Transmitter
with Two Current Loops
User’s Manual

Moisture
panametrics.com
Copyright 2020 Baker Hughes company.
This material contains one or more registered trademarks of Baker Hughes Company and its subsidiaries
in one or more countries. All third-party product and company names are trademarks of their respective
holders.
DewProMMR101
High-Temperature Moisture Transmitter
User’s Manual
A40251516 Rev.B

ii
[no content intended for this page]

DewPro MMR101 User’s Manual v
Contents
Chapter 1. General Information
1.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
1.2 Unpacking. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
1.3 Safety Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
1.4 Order Code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1.5 Instrument Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.6 Mode of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Chapter 2. Installing the DewPro MMR101
2.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.2 Manually Setting the Measurement Units. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.3 Choosing a Mounting Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.3.1 Mounting the Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.3.2 Using a Compression Fitting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.3.3 Using a Bracket. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.3.4 Making Electrical Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.3.5 Preparation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.3.6 System Configuration with One or Two 24 VDC Power Supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.3.7 System Configuration with One 24 VDC Power Supply and Loop Powered Display. . . . . . . . . . . . . . . . . . . . . . . . . .12
2.3.8 System Configuration with External Power Supply and Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Chapter 3. Operating the MMR101
3.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
3.2 Powering Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
3.3 Displaying Measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
3.4 Description of Matrix Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
3.4.1 System Administration Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
3.4.2 Moisture Measurement Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
3.4.2.1 Temperature Measurement Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
3.4.3 Error Codes and Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
3.4.4 Measurement Accuracy. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
Chapter 4. Troubleshooting
Chapter 5. Maintenance
5.1 Cleaning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
5.2 Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
5.3 Repairs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Chapter 6. Specifications

Contents
vi DewPro MMR101 User’s Manual

DewPro MMR101 User’s Manual 1
Chapter 1. General Information
Chapter 1. General Information
1.1 Introduction
The DewPro MMR101 is a moisture and temperature transmitter featuring two patented isolated 4 to 20-mA current
loops. The measuring range lies between 0 to 100% relative humidity at temperatures of up to 150oC (300oF). This
transmitter has been designed for use in low and high-temperature ranges, such as chemical processes, textile
production and the glass, cement and steel industries. This instrument can be used in pressurized and not
pressurized systems with pressures of up to 10 bar.
1.2 Unpacking
Inspect for any damaged packaging and contents. The post office or freight carrier must be informed of any
damage. Damaged merchandise must be retained until the matter has been settled.
Check that the delivery is complete and agrees with the shipping documents of your order (refer to nameplate for
type and variant).
The delivery comprises:
• DewProMMR101
• User’s Manual
• Depending on your order: process connection and display
• Calibration certificate
If you have any questions, consult your supplier or the Panametrics sales agency in your area (see back cover of
these operating instructions for addresses).
1.3 Safety Notes
• You should strictly adhere to the notes and warnings in this manual.
• Operating this instrument in any way other than as described in this manual may compromise the safety and
function of the measuring instrument.
• Troubleshooting should only be performed by authorized and trained personnel.
• To prevent accidental startup, remove the unit from service if you cannot remedy faults.
• Damaged equipment should be clearly identified as such to prevent danger.
• Repair work must be performed by authorized Panametrics Service Personnel.

Chapter 1. General Information
2DewPro MMR101 User’s Manual
1.4 Order Code
You can identify the various options for your unit by order code on the nameplate of the instrument.
Figure 1: Nameplate
Moisture Sensor DewPro MMR101
Certification/Approvals
R Standard (not certified)
A FM IS Class I, II, III; Division 1, Groups A-G, T4
B FM XP-IS Class I, Division 1, Groups A-D, T5
C FM NI Class, Division 2, Groups A-D, T4;
DIP Class II, III; Division 1, Groups E-G, T4
F ATEX II 3G EEx nA IIC T4
S Other
Process Connection
3 1/2” NPT-M compression fitting
8G ½compression fitting
6 No mounting hardware
2 ¾” NPT-M compression fitting
4 ¾” x 16 “O” ring seal compression fitting (UNF
thread)
S Other
Moisture output units
R % Relative Humidity

DewPro MMR101 User’s Manual 3
Chapter 1. General Information
1.5 Instrument Components
The DewPro MMR101 consists of the following components:
• electronics module in industrial IP 67, type 4X enclosure
• 1/2" stainless steel sensor tube
• Compression fitting, G 1/2 or 1/2" NPT thread
• Sensor:- capacitive polymer sensor for moisture measurement- Pt 1000 for temperature measurement
• Protective filter made of sintered stainless steel with a porosity of 40 pm
• Conduit adapter M20 to 1/2 NPT-M
CoC Dew Point
FoF Dew Point
Dg/m3
X g/kg
V%byvolume
WoC Wet bulb Temperature
ToF Wet bulb Temperature
S Special Version
Display
1 With Display/User Interface
2 w/o Display, current at error: 22 mA
3 w/o Display, current at error: hold
4 w/o Display, current at error: 3,6 mA
S Special Version
Probe Length
A 16” (406 mm) long
B 9” (229 mm) long
S Special Version
MMR101R R 3 C 2 B (example of order code)

Chapter 1. General Information
4DewPro MMR101 User’s Manual
1.6 Mode of Operation
The DewPro MMR101 measures the relative humidity and the temperature of the process. The sensor tube is designed
for direct measurement in the process (in-line measurement). The relative humidity is measured using the
capacitive measuring principle. The moisture sensor consists of a capacitor with two electrodes. The dielectric
constant of an organic dielectric located between the electrodes changes with relative humidity. The capacitance
determined is converted to a frequency by the microprocessor. This moisture signal is compared to a calibration
table permanently stored in the instrument.The relative humidity in the process is determined based on this signal. A
Pt 1000 sensor is used to measure the process temperature. The process temperature is available to the user via a
second 4 to 20 mA output. It is also used for moisture measurement temperature compensation. All the moisture
units provided by the instrument are determined from relative humidity and temperature.