GE Sensing MMR101 Operating Manual
GE
Sensing
DewPro
®
MMR101
High-Temperature Moisture Transmitter
with Two Current Loops
User’s Manual
GE
Sensing
DewPro
®
MMR101
High-Temperature Moisture Transmitter
User’s Manual
A40251516B
November 2005
The DewPro® MMR101 Transmitter is a GE General Eastern product. GE General Eastern has joined other GE
high-technology sensing businesses under a new name—GE Sensing.
November 2005
Warranty Each instrument manufactured by GE Sensing, Inc. is warranted to be
free from defects in material and workmanship. Liability under this
warranty is limited to restoring the instrument to normal operation or
replacing the instrument, at the sole discretion of GE Sensing, Inc.
Fuses and batteries are specifically excluded from any liability. This
warranty is effective from the date of delivery to the original
purchaser. If GE Sensing, Inc. determines that the equipment was
defective, the warranty period is:
• one year for general electronic failures of the instrument
• one year for mechanical failures of the sensor
If GE Sensing, Inc. determines that the equipment was damaged by
misuse, improper installation, the use of unauthorized replacement
parts, or operating conditions outside the guidelines specified by GE
Sensing, Inc., the repairs are not covered under this warranty.
The warranties set forth herein are exclusive and are in lieu of
all other warranties whether statutory, express or implied
(including warranties of merchantability and fitness for a
particular purpose, and warranties arising from course of
dealing or usage or trade).
Return Policy If a GE Sensing, Inc. instrument malfunctions within the warranty
period, the following procedure must be completed:
1. Notify GE Sensing, Inc., giving full details of the problem, and
provide the model number and serial number of the instrument. If
the nature of the problem indicates the need for factory service,
GE Sensing, Inc. will issue a RETURN AUTHORIZATION number (RA),
and shipping instructions for the return of the instrument to a
service center will be provided.
2. If GE Sensing, Inc. instructs you to send your instrument to a
service center, it must be shipped prepaid to the authorized repair
station indicated in the shipping instructions.
3. Upon receipt, GE Sensing, Inc. will evaluate the instrument to
determine the cause of the malfunction.
Then, one of the following courses of action will then be taken:
• If the damage is covered under the terms of the warranty, the
instrument will be repaired at no cost to the owner and returned.
• If GE Sensing, Inc. determines that the damage is not covered
under the terms of the warranty, or if the warranty has expired, an
estimate for the cost of the repairs at standard rates will be
provided. Upon receipt of the owner’s approval to proceed, the
instrument will be repaired and returned.
iii
November 2005
Table of Contents
Chapter 1: General Information
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Unpacking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Safety Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Order Code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Instrument Components. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
Mode of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
Chapter 2: Installing the MR101
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Manually Setting the Measurement Units. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Choosing a Mounting Location. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
Mounting the Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
Using a Compression Fitting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
Using a Bracket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
Making Electrical Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
System Configuration with One or Two 24 VDC Power Supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8
System Configuration with One 24 VDC Power Supply and Loop Powered Display. . . . . . . . . 2-9
System Configuration with External Power Supply and Display . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10
v
November 2005
Table of Contents (cont.)
Chapter 3: Operating the MMR101
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Powering Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Displaying Measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
Description of Matrix Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
System Administration Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
Moisture Measurement Options. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6
Temperature Measurement Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8
Error Codes and Messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10
Measurement Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11
Chapter 4: Troubleshooting
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Chapter 5: Maintenance
Cleaning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
Calibration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
Repairs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
Chapter 6: Specifications
Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
vi
Chapter 1
General Information
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Unpacking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Safety Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Order Code. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Instrument Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
Mode of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
November 2005
Introduction The 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 150
o
(300
F). This transmitter has been designed for use in low and hightemperature 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.
o
C
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 GE Sensing
sales agency in your area (see back cover of these operating
instructions for addresses).
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 preven t
danger.
• Repair work must be performed by authorized GE Sensing Service
Personnel.
General Information 1-1
November 2005
Order Code You can identify the various options for your unit by order code on
the nameplate of the instrument.
Figure 1-1:
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
8
G
½ compression fitting
6 No mounting hardware
2 ¾” NPT-M compression fitting
4 ¾” x 16 “O” ring seal compression fitting
(UNF thread)
S Other
Nameplate
Moisture output units
R % Relative Humidity
o
C
C Dew Point
o
F
F Dew Point
g/m
3
D
X g/kg
V % by volume
o
W
C Wet bulb Temperature
o
T
F Wet bulb Temperature
S Special Version
1-2 General Information
November 2005
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)
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
General Information 1-3
November 2005
Mode of Operation The 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.
1-4 General Information
Chapter 2
Installing the MR101
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Manually Setting the Measurement Units . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Choosing a Mounting Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
Mounting the Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
Making Electrical Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
November 2005
Introduction Installing the MR101 consists of finding a suitable installation
location, mounting the unit and then making the necessary wiring
connections. However, if your unit does not have a display, you
should make sure the moisture units have been configured.
Use the following sections to properly install you unit:
• Selecting the Measurement Units, below
• Choosing a Mounting Location on page 2-3
• Mounting the Unit on page 2-4
• Making Electrical Connections on page 2-5
Manually Setting the
Measurement Units
If your MMR101 is not equipped with a display, your unit will
already be configured for the measurement units you specified at the
time of ordering. Use the steps below to select different units or verify
the units is setup as specified.
Note: The sensor measures r elative humidity and temperatur e. Other
moisture units are derived from these live measurements. The
o
temperature loop is 0 to 150
selectable. See Measurement Accuracy on page 3-11 for more
details on accuracy.
Use the steps below to reset the desired measurement units.
Caution!
If your instrument is connected to power, disconnect it
before performing the following procedure.
1. If your unit is already installed, disconnect it from the power
supply.
2. Remove the housing cover opposite to the terminal side.
C (32 to 300oF) and is not
Remove
This Cover
Installing the MR101 2-1
November 2005
Manually Setting the
Measurement Units
(cont.)
3. Locate the four DIP switches on the printed circuit board.
DIP Switches
(enlarged)
4. Use a pointed object (e.g. a screwdriver) and set switches 1-3
according to the desired output unit (see T able 2-1, below). Switch
No. 4 has no effect.
Table 2-1: DIP Switch Positions for Unit Selection
Switch No.
Unit
1234
Relative Humidity % On On On Dew Point oC
Dew Point oF
Absolute humidity g/m
Off On On -
On Off On -
3
Off Off On -
Mixing ratio g/kg On On Off Volume % Off On Off -
Wet bulb temperature oC
o
Wet bulb temperature
F
On Off Off -
Off Off Off -
2-2 Installing the MR101
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