Vaisala HUMICAP MMT310 User manual

USER'S GUIDE
Vaisala HUMICAP® Moisture and
Temperature Transmitter Series for Oil
MMT310
M210474EN-D

PUBLISHED BY
Vaisala Oyj
Street address: Vanha Nurmijärventie 21, FI-01670 Vantaa, Finland
Mailing address: P.O. Box 26, FI-00421 Helsinki, Finland
Phone: [phone]
Fax: [phone]
Visit our Internet pages at www.vaisala.com.
© Vaisala 2015
No part of this manual may be reproduced, published or publicly displayed in any form
or by any means, electronic or mechanical (including photocopying), nor may its
contents be modified, translated, adapted, sold or disclosed to a third party without prior
written permission of the copyright holder. Translated manuals and translated portions
of multilingual documents are based on the original English versions. In ambiguous
cases, the English versions are applicable, not the translations.
The contents of this manual are subject to change without prior notice.
This manual does not create any legally binding obligations for Vaisala towards
customers or end users. All legally binding obligations and agreements are included
exclusively in the applicable supply contract or the General Conditions of Sale and
General Conditions of Service of Vaisala.

_________________________________________________________________________________
VAISALA_________________________________________________________________________ 3
Table of Contents
CHAPTER 1
GENERAL INFORMATION............................................................................7
About This Manual...................................................................7
Contents of This Manual .......................................................7
Version Information...............................................................8
Related Manuals ...................................................................8
Documentation Conventions.................................................8
Safety.........................................................................................9
ESD Protection......................................................................9
Recycling ................................................................................10
Regulatory Compliances.......................................................10
Emissions.......................................................................10
Immunity.........................................................................10
Trademarks.............................................................................10
Software License....................................................................11
Warranty..................................................................................11
CHAPTER 2
PRODUCT OVERVIEW................................................................................13
Introduction to MMT310 Series.............................................13
MMT310 Transmitter Parts .................................................15
Probe Options .....................................................................16
Filter Options.......................................................................16
CHAPTER 3
INSTALLATION............................................................................................17
Mounting .................................................................................17
Selecting a Place for the Probe...........................................17
Mounting the Transmitter/Removing the Transmitter Unit..18
Mounting the Transmitter with Optional Rain Shield...........19
Mounting the Rain Shield with Larger Transmitter Mounting
Plate ....................................................................................19
Mounting the MMT318........................................................20
Mounting for Pressurized Pipelines/Oils .............................20
Tightening the Clasp Nut ...............................................21
Ball Valve Installation Kit for MMT318 ................................23
Sampling Cell for MMT318..................................................25
Mounting the MMT317........................................................25
MMT317 Probe with Swagelok Connector for Tight-place
Installations ....................................................................26
Connections............................................................................28
Cable Wiring........................................................................28
Power Supply Requirements ................................................29
CHAPTER 4

User's Guide_______________________________________________________________________
4 ____________________________________________________________________ M210474EN-D
OPERATION.................................................................................................31
Power Supply..........................................................................31
Transmitter Start-Up...............................................................31
Serial Line and Analog Communication Options................32
RS-232 Serial Port Connection ...........................................32
USB Connection..................................................................33
Installing the Driver for the USB Cable ..........................33
Connection to an MI70 Hand-held Indicator........................34
Terminal Program Settings....................................................35
Opening a Serial/USB Connection with PuTTY.............35
List of Serial Commands .......................................................36
Measurement Output..............................................................38
Starting the Continuous Reading Output.............................38
Stopping the Continuous Reading Output...........................38
Set Continuous Output Interval for RUN Mode...................38
Output Reading Once..........................................................39
Set Serial Interface Mode....................................................39
Serial Line Settings..............................................................40
Set Transmitter Address for Use in POLL Mode.................40
Temporarily Open Transmitter from POLL Mode to Receive
Serial Commands................................................................41
Set Transmitter in POLL Mode............................................41
Output Formatting..................................................................42
Set Serial Output Format.....................................................42
Set Time and Date...............................................................43
Add Time and Date to SEND and R Outputs......................43
Select Metric or Nonmetric Output Units.............................44
Setting, Scaling and Testing the Analog Outputs...............44
Set Analog Outputs .............................................................44
Select Parameter for Analog Outputs..................................45
Scale Analog Outputs..........................................................46
Test Analog Outputs............................................................46
Test Analog Outputs for Desired Readings.........................47
Set Error Outputs.................................................................47
Other Commands....................................................................48
Check Transmitter Settings.................................................48
Serial Bus Echo...................................................................49
All Devices in POLL Mode Send Their Addresses..............49
List Commands....................................................................49
Set Result Filtering..............................................................49
Reset Transmitter................................................................50
Display Error Messages ......................................................50
CHAPTER 5
MAINTENANCE............................................................................................51
Periodic Maintenance.............................................................51
Calibration Interval...............................................................51
Replacing Consumables........................................................51
Changing the Filter ..............................................................51
Changing the Sensor...........................................................52
Clean the Sensor Before Storing the Transmitter...............53
Technical Support ..................................................................53

_________________________________________________________________________________
VAISALA_________________________________________________________________________ 5
CHAPTER 6
CALIBRATION AND ADJUSTMENT...........................................................55
Preparations Before the Calibration....................................56
Relative Humidity Calibration and Adjustment (in Two
Points) .................................................................................56
Low End Adjustment......................................................57
High End Adjustment .....................................................58
Temperature Calibration and Adjustment (in One Point)....59
Revert Factory Calibration ..................................................60
View Current Offset and Gain Adjustment..........................60
Relative Humidity Calibration after Sensor Change............61
Set Calibration Information Text..........................................61
Set Calibration Date............................................................61
Analog Output Calibration...................................................62
Adjustment Using an MI70 Indicator....................................62
Starting MI70 Adjustment....................................................62
Adjusting RH with MI70.......................................................63
1-point RH Adjustment...................................................63
2-point RH Adjustment...................................................63
LiCl – NaCl Automatic Adjustment.................................64
Adjusting T with MI70..........................................................65
1-point T adjustment ......................................................65
2-point T adjustment ......................................................65
Environment Settings..........................................................66
Last Adjustment Date..........................................................66
CHAPTER 7
TECHNICAL DATA......................................................................................67
Specifications.........................................................................67
Spare Parts and Accessories................................................69
Dimensions in mm (inches) ..................................................70
Transmitter Enclosure and Mounting Plates.......................70
Rain Shield Dimensions......................................................71
MMT318 Probe Dimensions................................................72
Ball Valve Set Dimensions..................................................73
MMT317 Probe with Optional Swagelok Connector,
Dimensions..........................................................................74
APPENDIX A
APPLICATIONS ...........................................................................................75
Transformer Oils ....................................................................75
PPM Calculation for Transformer Oils ................................76
Calculation Model with Average Coefficients......................77
Calculation Model with Oil Specific Coefficients.................77
PPM Calculation Setting........................................................78
Calculation Setting (Calculation Model with Average
Coefficients) ........................................................................78
Changing the Calculation Coefficients (Calculation Model
with Oil Specific Coefficients)..............................................78
Technical Data...............................................................79
Paper Machine Application ...................................................80

User's Guide_______________________________________________________________________
6 ____________________________________________________________________ M210474EN-D
List of Figures
Figure 1 MMT310 Transmitter Parts......................................................15
Figure 2 MMT310 Probes .......................................................................16
Figure 3 Mounting with Mounting Plates.................................................18
Figure 4 Rain Shield with Large Mounting Plate ....................................19
Figure 5 MMT318 Probe.........................................................................20
Figure 6 Sealing of Fitting Body into Process.........................................21
Figure 7 Tightening the Clasp Nut..........................................................22
Figure 8 MMT318 Ball Valve Assembly Installation ...............................23
Figure 9 Sampling Cell DMT242SC2......................................................25
Figure 10 MMT317 Probe with Swagelok Installation Kit .........................26
Figure 11 MMT317 Probe Installation to Pipeline with Swagelok
Installation Kit ...........................................................................26
Figure 12 8-Pin Connector (Left) and Screw Terminal Connector (Right)28
Figure 13 PuTTY Serial Line Configuration..............................................35
Figure 14 Changing the Sensor................................................................52
Figure 15 Location of Adjustment Button..................................................56
Figure 16 Transmitter Enclosure and Mounting Plate Dimensions ..........70
Figure 17 Rain Shield Dimensions (Back)................................................71
Figure 18 Rain Shield Dimensions (Side and Outer)................................71
Figure 19 MMT318 Probe Dimensions.....................................................72
Figure 20 Ball Valve Set Dimensions .......................................................73
Figure 21 MMT317 Probe with Swagelok Connector...............................74
Figure 22 The Water Solubility of Transformer Oils Versus Temperature76
Figure 23 Maximum Errors Caused by Deviation of Mineral Oils Using
Calculation Model with Average Coefficients...........................79
List of Tables
Table 1 Manual Revisions .......................................................................8
Table 2 Related Manuals.........................................................................8
Table 3 MMT310 Measurement and Calculation Quantities .................13
Table 4 MMT318 Pipe Dimensions .......................................................21
Table 5 Current Consumption by Output Type......................................29
Table 6 Measurement Output................................................................36
Table 7 Output Formatting.....................................................................36
Table 8 Calibration and Adjustment*.....................................................36
Table 9 Setting, Scaling and Testing Analog Outputs...........................37
Table 10 Other Commands .....................................................................37
Table 11 Modifiers...................................................................................42
Table 12 Analog Output Quantity Abbreviations .....................................42
Table 13 Analog Output Quantity Abbreviations .....................................45
Table 14 Water Activity / Relative Saturation..........................................67
Table 15 Temperature.............................................................................67
Table 16 Electrical Connections..............................................................68
Table 17 General.....................................................................................68
Table 18 Spare Parts and Accessories...................................................69

Chapter 1 _________________________________________________________ General Information
VAISALA_________________________________________________________________________ 7
CHAPTER 1
GENERAL INFORMATION
This chapter provides general notes for the manual and the MMT310.
About This Manual
This manual provides information for installing, operating, and
maintaining Vaisala HUMICAP®Moisture and Temperature Transmitter
Series for Oil MMT310 (MMT317 and MMT318).
Contents of This Manual
This manual consists of the following chapters:
- Chapter 1, General Information, provides general notes for the manual
and the MMT310.
- Chapter 2, Product Overview, introduces the features, advantages, and
the product nomenclature.
- Chapter 3, Installation, provides you with information that is intended
to help you install the MMT310.
- Chapter 4, Operation, contains information that is needed to operate
the MMT310.
- Chapter 5, Maintenance, provides information that is needed in basic
maintenance of the MMT310.
- Chapter 6, Calibration and adjustment, describes the calibration and
adjustment procedures.
- Chapter 7, Technical Data, provides the technical data of the
MMT310.
- Appendix A, Applications, describes typical applications where
MMT310 is used.

User's Guide_______________________________________________________________________
8 ____________________________________________________________________ M210474EN-D
Version Information
Table 1 Manual Revisions
Manual Code
Description
M210474EN-D
September 2015. This manual. %RS added to
available quantities.
M210474EN-C
March 2014. Previous version. New software
functionality applicable from version 2.0.1 onward.
Voltage output added to analog output options, new
voltage parameters in the AMODE command.
Added information on rain shield, sampling cell,
MI70 hand-held indicator, and USB connection.
Transmitter plastic housing material changed to
PPS. Updated serial terminal instructions, list of
optional accessories and operating voltage and
power consumption specifications. Document
template updated, quality improvement updates.
M210474EN-B
MMT318 and MMT317 User's Guide. The manual
has been updated with MMT317 installation
instructions and MMT317 dimension figure.
Related Manuals
Table 2 Related Manuals
Manual Code
Manual Name
M210878EN
Vaisala HUMICAP® Hand-held Moisture Meter for
Oil MM70 User’s Guide
M210185EN
Vaisala Humidity calibrator HMK15 User’s Guide
Documentation Conventions
Throughout the manual, important safety considerations are highlighted
as follows:
WARNING Warning alerts you to a serious hazard. If you do not read and follow
instructions very carefully at this point, there is a risk of injury or even
death.
CAUTION Caution warns you of a potential hazard. If you do not read and follow
instructions carefully at this point, the product could be damaged or
important data could be lost.
NOTE Note highlights important information on using the product.

Chapter 1 _________________________________________________________ General Information
VAISALA_________________________________________________________________________ 9
Safety
The Vaisala HUMICAP®Moisture and Temperature Transmitter Series
for Oil MMT310 is delivered to you tested for safety and approved as
shipped from the factory. Note the following precautions:
WARNING
Gr
ound the product and verify outdoor installation grounding
periodically to minimize shock hazard.
CAUTION
Do not modify the unit. Improper modification can damage the product
or lead to malfunction.
CAUTION
Do not touch the sensor plate.
CAUTION
In
pressurized processes it is essential to tighten the supporting nuts and
screws very carefully to prevent loosening of the probe by the action of
pressure.
CAUTION
Take care not to damage the probe body. A damaged body makes the
probe less tight and may
prevent it from going through the clasp nut.
ESD Protection
Electrostatic Discharge (ESD) can cause immediate or latent damage to
electronic circuits. Vaisala products are adequately protected against
ESD for their intended use. It is possible to damage the product,
however, by delivering electrostatic discharges when touching,
removing, or inserting any objects inside the equipment housing.
To make sure you are not delivering high static voltages yourself:
- Handle ESD sensitive components on a properly grounded and
protected ESD workbench.
- When an ESD workbench is not available, ground yourself to the
equipment chassis with a wrist strap and a resistive connection cord.
- If you are unable to take either of the above precautions, touch a
conductive part of the equipment chassis with your other hand before
touching ESD sensitive components.
- Always hold component boards by the edges and avoid touching the
component contacts.

User's Guide_______________________________________________________________________
10 ___________________________________________________________________ M210474EN-D
Recycling
Recycle all applicable material.
Dispose of the unit according to statutory regulations. Do not dispose of
with regular household refuse.
Regulatory Compliances
MMT310 complies with the following performance and environmental
test standards:
- EN 61326-1, Industrial environment.
Emissions
Test
Complies with Standard
Radiated emissions
EN/IEC 55022 / CISPR16/22 Class B
Immunity
Test
Complies with Standard
Electrostatic discharge
(ESD)
EN/IEC 61000-4-2
Radiated immunity
EN/IEC 61000-4-3
EFT burst (Electric fast
transients)
EN/IEC 61000-4-4
Surge
EN/IEC 61000-4-5
Conducted immunity
EN/IEC 61000-4-6
Trademarks
HUMICAP®is a registered trademark of Vaisala.
Windows® is a registered trademark of Microsoft Corporation in the
United States and/or other countries.

Chapter 1 _________________________________________________________ General Information
VAISALA________________________________________________________________________ 11
Software License
This product contains software developed by Vaisala. Use of the software
is governed by license terms and conditions included in the applicable
supply contract or, in the absence of separate license terms and
conditions, by the General License Conditions of Vaisala Group.
Warranty
Visit our Internet pages for standard warranty terms and conditions:
www.vaisala.com/warranty.
Please observe that any such warranty may not be valid in case of
damage due to normal wear and tear, exceptional operating conditions,
negligent handling or installation, or unauthorized modifications. Please
see the applicable supply contract or Conditions of Sale for details of the
warranty for each product.

User's Guide_______________________________________________________________________
12 ___________________________________________________________________ M210474EN-D
This page intentionally left blank.

Chapter 2 ___________________________________________________________Product Overview
VAISALA________________________________________________________________________ 13
CHAPTER 2
PRODUCT OVERVIEW
This chapter introduces the features, advantages, and the product
nomenclature.
Introduction to MMT310 Series
The Vaisala HUMICAP®Moisture and Temperature Transmitter Series
for Oil MMT310 is a small-size oil moisture and temperature transmitter
that powers up with 10 ... 35 VDC (mode-dependent power supply
requirements).
The MMT310 probe options are:
- MMT317 – small pressure-tight probe
- MMT318 – probe for pressurized pipelines
MMT310 supports the following output alternatives:
- Analog outputs 0/4 ... 20 mA and 0 … 5/10 V
(1 … 5 V available as scaled output: see section Setting, Scaling and
Testing the Analog Outputs on page 44).
- RS-232 serial line
- USB cable (optional accessory, order code 238607)
- MI70 handheld indicator connection (optional connection cable
DRW216050)
For a list of MMT310 optional accessories and spare parts, see section
Spare Parts and Accessories on page 69.
The transmitter measures and calculates the following quantities:
Table 3 MMT310 Measurement and Calculation Quantities
Quantity
Abbreviation
Metric Unit
Non Metric Unit
Water activity
aw
aw
aw
Relative saturation
%RS
%RS
%RS
Temperature
T
°C
°F
Parts per million
(for transformer oil only)
ppm
ppm
ppm

User's Guide_______________________________________________________________________
14 ___________________________________________________________________ M210474EN-D
Vaisala HUMICAP moisture in oil transmitters MMT318 and
MMT317 are designed for industrial applications. They measure water in
oil in terms ofwater activity (aw) and relative saturation (%RS). With
thehelp of internal oil solubility coefficients, MMT310 is also able to
output oil moisture in ppm (by default supported only for mineral
transformer oil).
Water activity indicates theamount of oil in thescale of0 … 1 aw. In
this scale, 0 awis an indication of completely water free oil, and 1 awan
indication ofoil fully saturated with water (water is present in free form).
Relative saturation indicates theamount of water oil in thescale of
0 ... 100 %RS. In this scale, 0 %RS is an indication of completely water
free oil and 100 %RS an indication of oil fully saturated with water
(water ispresent infree form).
The most important feature which distinguishes themeasurement of
water activity (aw)and relative saturation (%RS) from the traditional
measurement of absolute water content (in ppm) is that the saturation
point remains stable regardless of the oil type or the aging of oil,
additives used, etc. Aswater activity exceeds 0.9 aw(or relative saturation
exceeds 90%RS) inanysystem, there is a risk forsegregation (especially
ifthe temperature decreases).
Water activity and relative saturation are used for alarming at the point of
>0.9 aw / >90 %RS that the risk for free water in the system is obvious.
The most important advantages of this system are the fact that water
activity and relative saturation are immune to theaging ofoil and to
additives. MMT318 and MMT317 can be used for continuous on-line
measurements andbe calibrated against salt solutions with noreference
oils needed.
Appendix A on page 75 presents application information when using the
MMT318 and MMT317 with transformer oil (output unit= ppm).
General information on paper machine use is also included in the
Appendix.

Chapter 2 ___________________________________________________________Product Overview
VAISALA________________________________________________________________________ 15
MMT310 Transmitter Parts
1403-179
Figure 1 MMT310 Transmitter Parts
The following numbers refer to Figure 1 above:
1
=
Transmitter unit
2
=
Mounting plate (smaller mounting plate also available)
3
=
Connector for signal output and power supply. Available with
female connector with 5 m cable or screw terminal connector.
4
=
Probe

User's Guide_______________________________________________________________________
16 ___________________________________________________________________ M210474EN-D
Probe Options
1311-199
Figure 2 MMT310 Probes
The following numbers refer to Figure 2 above:
1
=
MMT317 probe with optional Swagelok connector for tight-place
installations.
2
=
MMT318 probe for pressurized pipelines with two adjustable
probe lengths and optional ball valve set.
For probe dimensions, see MMT317 Probe with Optional Swagelok
Connector, Dimensions on page 74 and MMT318 Probe Dimensions on
page 72.
Filter Options
MMT310 filter options include stainless steel filters with 3.15 mm and
1.5 mm (for high flow velocity oil measurements) holes. The filters are
12 mm in diameter with a female thread. The filters recommended for a
probe type can be selected on the corresponding MMT310 order form.
For information on ordering accessories, see section Spare Parts and
Accessories on page 69.

Chapter 3 ________________________________________________________________ Installation
VAISALA________________________________________________________________________ 17
CHAPTER 3
INSTALLATION
This chapter provides you with information that is intended to help you
install the MMT310.
Mounting
Selecting a Place for the Probe
Select a place which gives a true picture of the process. Oil should
circulate freely around the sensor; clear oil flow is recommended. Install
the probe directly into the circulation system and not into the oil reservoir
because of deposition.
It is recommended that the sensor head is installed directly in the process
through the ball valve assembly. When the ball valve assembly is used,
the pipe does not have to be emptied or shut down for installation or
removal of the probe. Install the sensor head transversely against the
direction of the process flow.
NOTE
Avoid mounting the transmitter housing close to steam sources or
directly exposed to rain. To ensure an IP 6
6 class protection, always
mount
the transmitter housing with the cable bushings pointing
downwards.
NOTE
Take care not to damage the pipe of the probe. If the pipe
is damaged,
the probe head is less tight and will not go through the clasp nut. Make
sure that the filter is tightly
fastened to protect the sensors.

User's Guide_______________________________________________________________________
18 ___________________________________________________________________ M210474EN-D
Mounting the Transmitter/Removing the
Transmitter Unit
Select a place with stable conditions for mounting the transmitter. Do not
expose the transmitter to direct sunlight or rain. Always mount the
transmitter housing with the cable bushings pointing downwards.
NOTE If the transmitter is mounted outdoors, cover it with a shelter (purchased by
customer). A rain shield designed for MMT310 is available as an optional
accessory. For information on ordering accessories, see section Spare Parts
and Accessories on page 69.
1. Mount the plate onto the wall with four/two screws
(Ø 4.5 mm/6.0 mm).
2. Place the transmitter onto the mounting plate and fasten it with two
Allen screws.
The transmitter module can be unfastened for calibration by releasing the
two Allen screws on the left side.
1403-181
Figure 3 Mounting with Mounting Plates
The following letters and numbers refer to Figure 3:
A
=
Mounting with larger mounting plate (mount from flanges)
B
=
Mounting with smaller mounting plate (remove the transmitter
and mount using the holes in mounting plate base)
1
=
Two Allen screws for fastening or removing the transmitter
module (Allen key provided)
2
=
Four screw holes (Ø 4.5 mm) for wall mounting (screws not
provided)
3
=
Two screw holes (Ø 6.0 mm) on the base of the plate for wall
mounting (screws not provided)

Chapter 3 ________________________________________________________________ Installation
VAISALA________________________________________________________________________ 19
NOTE
It is recommended that the supply is switc
hed off before connecting the cable
plug to transmitter during installation or service/calibration.
Mounting the Transmitter with Optional
Rain Shield
If you mount MMT310 outdoors, use a shelter to protect the transmitter.
An MMT310 rain shield is available from Vaisala as an optional
accessory (order code ASM211103).
NOTE
Vaisala does not recommend installing the transmitter outdoors with the
smaller mounting plate (without flanges). Use the larger mounting plate
with flanges for outdoor installations.
Mounting the Rain Shield with Larger
Transmitter Mounting Plate
1311-251
Figure 4 Rain Shield with Large Mounting Plate
The following numbers refer to Figure 4 above:
1
=
Transmitter’s larger mounting plate: attaches to rain shield from
flanges with four Ø 4.5 mm screws (not provided).
2
=
Rain shield: Four Ø 8.5 mm holes for (U-bolt) mounting. The
maximum diameter of the pole in U-bolt mounting is 60 mm.
3
=
Rain shield: Four Ø 4.5 mm screw holes for mounting.

User's Guide_______________________________________________________________________
20 ___________________________________________________________________ M210474EN-D
You can mount the rain shield and transmitter directly to a wall with
screws through both the mounting plate and the rain shield, or attach the
transmitter mounting plate to the rain shield and use for example U-bolt
mounting depending on the requirements of the installation site.
For rain shield measurements, see section Rain Shield Dimensions on
page 71.
Mounting the MMT318
NOTE Do not unsolder and then again resolder the sensor head cable from and
to the printed board during installation; this procedure may alter the
humidity calibration of the transmitter.
Mounting for Pressurized Pipelines/Oils
Due to the sliding fit, MMT318 is easy to install into and remove from
the pressurized process. The probe is especially suitable for
measurements in pipelines.
0507-041
Figure 5 MMT318 Probe
The following numbers refer to Figure 5 above:
1
=
Clasp nut; 24 mm hex nut
2
=
Fitting body; 27 mm hex head