Materials Testing
 
    Hand-Held Moisture Meter

Hand-Held Moisture Meter

for Lubrication and Hydraulic Oils


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Why buy from Geneq? - find out more


The MM70 is an ideal tool for the preventive maintenance of oil-filled systems.

The water activity measurement indicates the margin to free water formation, which causes severe problems in lubrifications systems. The HUMICAP handheld moisture meter for oil MM70 enables reliable detection of moisture in oil. 

 

FEATURES & BENEFITS

Measurement independent of oil type, age and temperature

In-line process checking through ball valve, no need to drain the oil

Rugged and reliable construction

Excellent pressure and temperature tolerance

Data can be logged and transferred to a PC

Vaisala HUMICAP Sensor - proven field performance since 1973

Compatible with Vaisala's fixed oil moisture instruments

Temporary outdoor logging possible with carrying case

No reference oil needed for recalibration

 

IN-LINE PROCESS CHECKING THROUGH BALL VALVE

The probe can be inserted directly into the process pipe through a ball valve without draining the oil in the system.

 

WATER ACTIVITY MEASUREMENT

The MM70 measures moisture in oil in terms of the water activity (aw) and temperature (T). Water activity directly indicates whether there is a risk of free water formation. The measurement is independent of oil type, age and temperature.

 

NUMERICAL AND GRAPHICAL DISPLAY

The MM70 features a multilingual, menu-based user interface and a backlit LCD display. The measurement parameters can be numerically and graphically displayed and logged into the meter's memory at the same time. An analog output option is also available.

 

CONNECTION TO PC

The optional MI70 Link Windows software is used to transfer logged data and real time measurement data from the MM70 to a PC.

 

PROVEN VAISALA HUMICAP TECHNOLOGY

The MM70 incorporates the latest generation of the Vaisala HUMICAP Sensor, developed for demanding moisture measurements in liquid hydrocarbons. The sensor's excellent chemical tolerance provides accurate and reliable measurement over the measurement range.

 

SPEEDY SERVICE - ONCE A YEAR

The meter can be recalibrated by sending the probe to Vaisala Service, or customers can calibrate the instrument themselves using a standard relative humidity calibration.

 

MULTI-PROBE OPERATION

One or two probes can be connected simultaneously. Maintenance teams can use additional Vaisala dewpoint or relative humidity probes for other tasks. For example, a dewpoint probe is ideal for checking the moisture inside washed and dried oil tanks.




PERFORMANCE
Water activity
Measurement range0 to 1 aw
Accuracy (including nonlinearity, hysteresis and repeatability) when calibrated agaisnt salt solutions (ASTM E104-85)±0.02 (0 to 0.9)
±0.03 (0.9 to 1.0)
Accuracy (including nonlinearity, hysteresis and repeatability) maximem achievable accuracy when calibrated against high quality, certified humidity standards±0.01 (0 to 0.9)
±0.02 (0.9 to 1.0)
Response time (90%)10 min. (at 20°C) in still oil with stainless steel filter
Sensor>Vaisala HUMICAP
Recommended recalibration interval1 year
Measurement range-40 to 100°C (-40 to 212°F)
Typical accuracy at 20°C±0.2°C (±0.36°F)
Typical temp. dependence of electronics±0.005°C/°C (±0.005°F/°F)
SensorPt 100 IEC 751 1/3 class B
Typical long-term stabilitybetter than 0.001 aw/year
OPERATING EQUIPMENT
Probe
Operating temp. for electronics-40 to 60°C (-40 to 140°F)
Operating pressure rangeMax. 20 bar
Max. 10 bar (during installation through ball valve)
Oil flow rangeMax. 1 m/s
Indicator
Operating temperature range-10 to 40°C (14 to 104°F)
Operating humidity rangenon-condensing
Electromagnetic compatibility
Complies withEMC standard EN61326-1:1997 + Am1:1998, Electrical equipment fr measurement, control and laboratory use - EMC requirements: Portable test and measurement.
INPUTS AND OUTPUTS
Power supplyRechargeable NiMH battery pack with AC-POWER or 4 x AA-size alkalines, type IEC LR6
Battery operation time continuous use48 hours typical at 20°C (68°F)
Battery operation time datalogging useUp to 31 days
Menu languagesEnglish, French, Spanish, German, Sweidish, Finninsh
DisplayLCD with backlight, graphic trend display of any parameter character hight up to 16mm
Analog output0 to 1 VDC
Output resolution0.6 mV
Data interfaceRS232
Datalogging capacity2700 points
AlarmAudible alarm function
MECHANICS
Probe 
Housing classificationIP65 (NEMA 4)
Housing materialABS/PC blend)
Probe materialStainless steel (AISI316L)
Cable length between probe and indicator1.9m (10m extension available)
Weight506g
INDICATOR
Housing classification IP54
Weight400g
Probe inputs1 or 2
CAT. NO.DESCRIPTION
VAMM70-000Handheld moisture and temperature meter for spot-checking in oil
Probes
VAHM75-000Relative humidity measurement probe model HM75
VAHM76-000Relative humidity measurement probe model HM76
VAHM77-000Relative humidity measurement probe model HM77
VADMP74A/BDewpoint measurement probes
Options and accessories
VAMI70CASE2Carrying case
VAHMP228BVSBall valve set (incl. fitting body and blanking plug)
VA213017SPProbe cable extension, 10m
VA27159ZZTransmitter connection cable for HMP228
VADRW216050Transmitter connection cable for MMT318
VA27168ZZ-Analog output cable
VAMI70LINKWindows software, inclides PC connection cable
VAHM47453SPSensor protection