Vaisala HUMICAP MMT310 Instrukcja Obsługi Strona 54
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MMT310 Series Moisture and Temperature
Transmitter for Oil
The Vaisala HUMICAP
®
Moisture and
Temperature Transmitter Series for
Oil MMT310 is a fast and reliable on-
line detector for moisture in oil.
Reliable Vaisala
HUMICAP® technology
The MMT310 series incorporates
the latest generation of the Vaisala
HUMICAP
®
Sensor, developed for
demanding moisture measurement
in liquid hydrocarbons. The sensor’s
excellent chemical tolerance provides
accurate and reliable measurement
over the wide measurement range.
Measuring water activity
The MMT310 series measures
moisture in oil in terms of the water
activity (aw) and temperature (T).
Water activity directly indicates if
there is a risk of free water formation.
The measurement is independent of
oil type, age, and temperature.
Two probe options: MMT317 and MMT318
Water content as
ppm calculation for
transformer oils
PPM units are traditionally used
in transformer applications.
They indicate the average mass
concentration of water in oil. The
ppm calculation for mineral oil based
transformer oil is optional in the
MMT310 series.
Diverse applications and
demanding conditions
The MMT310 series can be used in
lubrication and hydraulic systems
as well as in transformers. It can be
used for on-line moisture monitoring
and as a control function, allowing
separators and oil puriers to be
started only when necessary.
Installation options
The MMT318 has two adjustable
probe lengths. The transmitter can
be ordered with a ball valve set that
enables the insertion and removal of
the moisture probe for calibration,
without the need to empty the oil
system.
The MMT317 has a small pressure-
tight probe with optional Swagelok
ttings.
Several outputs, one
connector
The MMT310 series has two analog
outputs and an RS-232 serial output.
The output signals and the supply
power travel in the same cable, the
only cable connected to the unit.
Features/Benefits
▪
Continuous measurement of
moisture in oil
▪
Proven Vaisala HUMICAP®
sensor, 10 years in oil
applications
▪
Measurements in lubrication,
hydraulic and transformer oils
▪
Excellent pressure and
temperature tolerance
▪
Measuring water activity - ppm
calculation for transformer oil
▪
Small size, easy to integrate
▪
NIST traceable calibration
▪
Applications: e.g. monitoring
of transformer oil and of
lubrication systems in marine
and paper industry
Technical data
Measured values
WATER ACTIVITY
Measurement range a
w
0 ... 1
Accuracy (including non-linearity,
hysteresis and repeatability)
0 ... 0.9 ±0.02
0.9 ... 1.0 ±0.03
Response time (90 %) at +20 ˚C in still oil
(with stainless steel filter)
10 min
Sensor Vaisala HUMICAP
®
TEMPERATURE
Measurement range -40 ... +180 ˚C (-40 ... +356 ˚F)
Typical accuracy at +20 ˚C ±0.1 ˚C (±0.18 ˚F)
Typical temperature dependence
of electronics ±0.05˚C/ ˚C (±0.005 ˚F/˚F)
Sensor Pt100 IEC751/3 class B
Electrical connections
Two analog outputs, selectable and
scalable 0 ... 20 mA or 4 ... 20 mA
Typical accuracy of analog output at +20 ˚C ±0.05 % full scale
Typical temperature dependence
of analog output
0.005 %/˚C (0.003 %/˚F)
full scale
Serial output RS-232C
Connections 8-pole connector with RS-232C, current
outputs (two channels) and U
in
Operating voltage U
in
24 VDC (10 ... 35 VDC)
Minimum operating voltage U
in
with RS-232C 10 VDC
I
out
0 ... 20 mA, 4 ... 20 mA 11 VDC + (R
load
/60) VDC
Power consumption at +20 ˚C, U
in
= 24 VDC
with RS-232C 20 mA
I
out
2 x 0 ... 20 mA 60 mA
General
Operating temperature range for
electronics -40 ... +60 ˚C (-40 ... +140 ˚F)
Storage temperature -55 ... +80 ˚C (-67 ... +176 ˚F)
Pressure range for MMT318 with ball
valve up to 120 ˚C 0 ... 40 bar
Pressure range for MMT317 0 ... 10 bar
External load R
1
<500 Ohm
Material
transmitter housing G-AlSi 10 Mg
transmitter base ABS/PC
Housing classification IP65
to be protected from direct rain
Cable feed through alternatives 8-pole connector with 5 m cable,
female 8-pin connector screw
joint for cable diameter 4 ... 8 mm
Sensor protection stainless steel grid
Probe cable length
MMT317 0.5, 2, 5 or 10 meters
MMT318 2, 5 or 10 meters
Probe installation MMT317
Swagelok
®
NPT 1/2”, ISO 3/8” or ISO 1/2”
Probe installation MMT318
Fitting bodies ISO 1/2”, NPT 1/2”
Ball Valve Set BALLVALVE-1
Complies with EMC standard EN61326-1, Industrial environment
Note: When using the current output, the RF field susceptibility
level according to standard EN61000-4-3 with a frequency band
of 110 ... 165 MHz, is only 3 V/m (generic environment) with the
specified accuracy.
HUMICAP
®
is a registered trademark of Vaisala.
Ref. B210831EN-A ©Vaisala 2009
This material is subject to copyright protection, with all
copyrights retained by Vaisala and its individual partners. All
rights reserved. Any logos and/or product names are trademarks
of Vaisala or its individual partners. The reproduction, transfer,
distribution or storage of information contained in this brochure
in any form without the prior written consent of Vaisala is strictly
prohibited. All specifications — technical included — are subject
to change without notice.
For more information, visit
www.vaisala.com or contact
us at sales@vaisala.com
- HUMIDITY / DEW POINT / 1
- Vaisala – at your service 3
- Building Automation 5
- Cleanrooms and Chambers 5
- Humidity 7
- 37.5 (1.48) 9
- 78.5 (3.09) 9
- 98.5 (3.88) 9
- Ø 12 (0.47) 9
- 120 (4.72) 10
- 170 (6.69) 10
- 41 (1.61) 10
- Duct installation kit 11
- Temperature Transmitters 12
- Transmitter 15
- Indoor Applications 17
- Chambers 22
- Vaisala INTERCAP 23
- Humidity and Temperature 23
- Probe HMP60 23
- Vaisala HUMICAP 24
- Probe HMP110 24
- HMI41 Indicator and 26
- HMP46 High Temperature Probe 26
- Performance 29
- Interchangeable Probe 29
- Available Options 29
- Technical Data 30
- HMK15 Humidity Calibrator 31
- DTR500 Solar Radiation and 33
- Precipitation Shields 33
- The Vaisala HUMICAP 36
- Transmitter Series HMW80 37
- HVAC Applications 39
- WITH OPTIONAL CURRENT MODULE 40
- **0 … 20 mA (R 40
- 1/8"-27 NPT 41
- Ensure dry 43
- OEM Applications 46
- Transmitter Series for Oil 51
- Moisture in Oil 51
- Prevent it 53
- Transmitter for Oil 54
- 0 ... 2 % 57
- Demanding OEM Applications 59
- GMM111 Carbon Dioxide Module 60
- Demand-controlled Ventilation 62
- GMM20W Carbon Dioxide Module 65
- GML20 and GML20T 66
- Process Measurements 67
- Humidity and 68
- Measurement 68
- Environments 68
- Hazardous Areas 69
- PTU300 Models 70
- Barometric Pressure 70
- Reliable and accurate 72
- HVAC solutions 72
- Take the lab to the field 74
- Standard PTB330TS 75
- PTB210 Digital Barometer 76
- Wind Measurement 81
- Vaisala Service Oering 82
- Vaisala Service Offering 82
- Your Warranty 83
- PRICE LIST 84
- DMT132 Dewpoint Transmitter 85
- Datasheet – front 85
- Vaisala Filters 89
- Vaisala Filters continued 89
- Order Guides 90
- Note: The Universal AC 91
- For high temperatures 92
- For high humidities 93
- For wall mounting 95
- For general use 96
- With Two Standard Chambers 101
- For Pressurized Processes 103
- DMT345 Dewpoint Transmitter 104
- DMT152 Dewpoint Transmitter 105
- DMT242 Dewpoint Transmitte 106
- For pressurized pipelines 108
- GMT221 and GMT222 CO 109
- Transmitters 109
- OMT355 Oxygen Transmitter 110
- 1 Transmitter type 111
- (-40...+140 °F) 112
- (-4...+140 °F) 112
- (+32...+140 °F) 112
- Order Guide 114
- Features/Benefits 115
- Technical data 116
- 3 Cable length 1.0 m 117
- PTB110 Barometer 118
- WXT520 Weather Transmitter 119
- Vaisala Contact Information 121
- ACCURATE 122
- For more information, visit 123
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