Vaisala HUMICAP? MMT330 series oil moisture and temperature transmitter

review

• Three types of oil and moisture detection probes can be selected (MMT332 is suitable for installation in high-pressure environments; MMT337 is suitable for the installation of joint locking nut type joints and is the preferred threaded connection method for narrow spaces; MMT338 is a pipeline installation type
• Continuous online measurement of moisture in oil
• Ball valve installation mode - no need to shut down the production process
• Using long-term stable Vaisala HUMICAP? sensor
• Integrated data logger, capable of storing 4-year measurement data history
• Optional LAN and WLAN communication methods
• The successor model of HMP228 oil moisture temperature transmitter

  Technical Parameter

  Water activity measurement
  	Range aw accuracy 0 . .. 0.9 0.9 . .. 1.0 sensor	0 .. 1 ±0.02 ±0.03 Vaisala HUMICAP?
  work environment
  	operation temperature Probe Transmitter theme Equipped with display components P probe pressure range MMT332 MMT337 MMT338	-40 . .. +180 °C (-40 ... +356 °F) -40 . .. +60 °C (-40 … +140 °F) 0 .. +60 °C (+32 … +140 °F) 0 .. 250 bar (0 ... 3625psia) 0 .. 10 bar (0 ... 145psia) 0 .. 40 bar (0 ... 580psia)
  ?	Compliant with EMC standard requirements	Compliant with EN61326-1:1997+Am1:1998+Am2:2001; Industrial environment
  input and output
  ?	Working voltage	?10 . .. 35 VDC, 24VAC
  ?	Use optional power supply	?100 . .. 240 VAC 50/60 Hz
  ?	Use power module	?
  ?	Power consumption at 20 ° C (U input 24VDC)	?
  ?	? RS-232	Large 25 mA
  ?	U output 2 x 0... 1V/0... 5V/0 ..10V	? Greater 25 mA
  ?	?I output 2 x 0... 20 mAmA	Greater 60 mA
  ?	Display and backlight	?+20 mA
  ?	Analog output (2 standard outputs, 3rd optional output)	?
  ?	Current output	0 .. 20mA, 4 . .. 20mA
  ?	Voltage output	0 .. 1 V, 0 ... 5 V, 0 ... 10 V
  ?	Digital output	RS-232, RS-485 (optional)
  ?	Relay output	?0.5 A，50 VAC，SPDT， Zero potential (optional)
  ?	Optional real-time clock data logger	?
  ?	? Recordable parameters	Three more, trend curve/small value/large value
  ?	Record the interval time	10 seconds (non modifiable)
  ?	Long recording time	4 years and 5 months
  ?	Record points	13.7 million record points per parameter
  ?	Battery life	Short 5 years
  ?	Ethernet interface (optional)	?
  ?	Can support standards	?10/100Base-T
  ?	Connecting components	?RJ45
  ?	Agreement	?net
  ?	WLAN interface (optional)	?
  ?	Can support standards	?802.11b
  ?	Antenna connector model	?RP-SMA
  ?	Agreement	?net
  ?	Sex	?WEP 64/128,WPA
  ?	Authentication/Encryption	?
  ?	Open/unencrypted	?
  ?	Open/WEP	?
  ?	WPA Pre Shared Key/TKIP	?
  ?	WPA Pre Shared Key/CCMP (also known as WPA2)	?
  ?	? Display	LCD backlight display, which can display any parameter in a graphical trend curve format
  ?	Display menu language	English, French, Spanish, German, Japanese, Russian, Swedish, Finnish, Chinese
  Other indicators
  	Probe cable length Shell material degrees of protection provided by enclosure	Probe cable length 2 m, 5 m or 10 m G-AlSi 10 Mg (DIN 1725) IP 65 (NEMA 4X)
  Options and accessories
  	installation package	Wall mounted installation kit DIN rail installation kit Column or pipeline installation kit Installation of rain cover

  Please refer to the user guide in the manual or 'documentation' for complete parameters.
  Application notes
  Measuring Moisture in Oil FAQs (pdf, 249KB)
  Monitoring Transformer's Oil Moisture Levels (pdf, 466KB)
  Case studies
  Kanden Engineering switched to Vaisala to monitor transformer oil moisture - for precision, reliability and cost-savings (pdf, 242KB)
  Certificates
  DNV Type Approval Certificate No A-13529 (pdf, 211KB)
  Datasheets
  MMT330 Datasheet in English (pdf, 456KB)
  MMT330 Joint Product Application Introduction (PDF, 548KB)
  Order forms
  MMT330 Order Form Global (pdf, 81KB)
  Quick reference guides
  HMT330, DMT340, MMT330, PTU300 Multilingual Quick Guide (pdf, 1346KB)
  Success Stories
  Ergon Energy Optimizes its Asset Utilization with Online Transformer Monitoring (pdf, 187KB)
  Technology descriptions
  Vaisala HUMICAP Sensor for Measuring Moisture in Oil (pdf, 260KB)
  User's guides
  MMT330 User Manual (PDF, 1260KB)
  MMT330 User Guide in English for USA (pdf, 3718KB)
  MMT330 User Guide in English (pdf, 3760KB)
  Vaisala News articles
  Hydroelectric Plant Benefits from Early Detection of Moisture in Oil (pdf, 518KB)
  Certified Reliability For The Seas (pdf, 639KB)
  Spot and stop water contamination (pdf, 87KB)
  White papers
  Whitepaper: The Effect of Moisture on the Breakdown Voltage of Transformer Oil (pdf, 601KB)
  The influence of moisture on the breakdown voltage of transformer oil insulation (pdf, 661KB)
  Wiring diagrams
  HMT330 DMT340 MMT330 Wiring Diagram in English (pdf, 358KB)
  POWER-1 Power Supply Module Installation Instructions in English (pdf, 441KB)