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GE Protimeter MMS, Инструкция по эксплуатации

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Page 14

Protimeter MMS Moisture Measurement System

3 Diagnostic Procedure Guidelines

When diagnosing dampness in buildings, there are three key criteria that must 
be considered. These are outlined in Table 6 below.

Item 1:

The 

Search

 and 

Measure

 modes should be used in combination to 

map out the extent of a moisture problem and to distinguish between 
surface and sub-surface moisture. The profile of readings obtained 
will give insight into the potential cause (e.g. condensation, lateral 
ingress or rising dampness) of a moisture-related problem.

Far greater insight will be obtained from moisture readings taken in a 
methodical manner than from those taken in a random manner. When 
testing walls, the user should start by taking readings at the lower 
levels and move up the wall in regular steps of 4-6 in. (10-15 cm). 

Table 6: Diagnostic Criteria

Item

Criteria

Notes

1

Is a wall or other building 
element in a safe air-dry 
condition?

Air-dry is the moisture content that is 
normal and safe (from moisture-related 
deterioration or decay) in buildings. When 
the Protimeter MMS moisture meter modes 
are selected, measured values are identified 
as 

DRY

, 

AT RISK

 or 

WET

.

2

Is the surface temperature of a 
wall or other building element 
above or below the dew point?

Dew point is the temperature at which a 
given quantity of air becomes saturated 
(100% RH) and forms dew, or 
condensation. If a surface is colder than the 
dew point, condensation occurs. When the 
Protimeter MMS Condensator Mode is 
selected to measure T

DIFF

 (the proximity of 

a surface to the dew point) the instrument 
identifies either a 

NO CONDENSATION

 

condition, an 

AT RISK

 condition, or a 

CONDENSATION

 occurring condition.

3

Is a wall surface or other 
building element 
contaminated with 
hygroscopic salts or other 
conductive material?

Artificially high moisture meter readings 
may be obtained either in material that has 
been heavily contaminated by hygroscopic 
salts or in materials that are conductive by 
nature. The presence or absence of nitrates 
and chlorides should be established when 
investigating suspected rising dampness 
situations in particular.

Содержание Protimeter MMS

Страница 1: ...GE Sensing Protimeter MMS Moisture Measurement System Instruction Manual ...

Страница 2: ...GE Sensing Protimeter MMS Moisture Measurement System Instruction Manual INS5800A October 2005 ...

Страница 3: ...sator Mode Selection and Use 9 2 5 Setup Mode Selection and Use 11 2 6 Holding and Measurement Storage Mode Selection and Use 13 3 Diagnostic Procedure Guidelines 14 4 Calibration Checking 16 5 Care and Maintenance 16 6 Technical Specifications 17 7 Displaying the MMS Information 18 A1 Using the Protimeter MMS to Measure Moisture in Floors 18 A1 1 Rapid Moisture Level Assessment of Solid Floors 18...

Страница 4: ...rotimeter MMS kit comprises a carry case containing the MMS instrument and a range of standard accessories as detailed in Table 1 below As an example the figure on the next page shows a BLD5800 kit Table 1 Protimeter MMS Kit Description Part Number Standard Kit Kit with Hygrostick Data cable software Kit with Humistick Data cable software BLD5800 BLD5800LH BLD5800HS Kit Components Protimeter MMS i...

Страница 5: ...The following external connections are found on the instrument case see the figure on the next page EC 1 This edge connection socket is for use with a Hygrostick or Humistick probe JC This jack connection socket is for use with a moisture probe deep wall probes or a hammer electrode EC 2 This edge connection socket is for use with the Direct Contact Surface Temperature Sensor and for connection to...

Страница 6: ...ted to the Protimeter MMS instrument either directly or by means of the Hygrostick Humistick extension lead The surface temperature sensor TS is used when investigating condensation situations The moisture probe is used to obtain percent moisture content values in wood or wood moisture equivalent WME values in other non conductive materials Deep wall probes are used to obtain WME values deep below...

Страница 7: ...depressed for 3 seconds or more all text blocks appear on the display when is released the text blocks disappear and the unit switches OFF 1 2 Optional Accessories A range of optional accessories may be used with the Protimeter MMS These include hammer electrodes data download software cable additional Hygrosticks and Humisticks For more information please contact GE Sensing 2 Moisture Meter Modes...

Страница 8: ... the leading edge of the sensor bulge is in direct contact with the surface the Search mode is not suitable for surveying textured finishes The nominal depth of penetration is up to 0 6 in 15 mm in dense homogeneous materials Readings taken through low density coverings carpets polystyrene tiles etc will not be representative of the moisture level in the substrate itself When using the MMS in Sear...

Страница 9: ...ould return to normal and the instrument should read zero when held in free air You may now take normal Search Mode readings with the MMS 2 1 1 1 Troubleshooting the Zeroing Function The instrument changes mode when zeroing Is attempted If the instrument changes mode when you attempt to zero it you have most likely not pressed the two buttons at exactly the same time Return to Search Mode and atte...

Страница 10: ...tual MC readings in wood and WME readings in non conductive solid materials other than wood by pushing the moisture probe pins into the surface see the figure to the right The measured value is displayed and the progress bar indicates whether the material is in a DRY AT RISK or WET condition as listed in Table 2 below Table 2 Measure Mode Readings MC wood only or WME MMS Measure Mode Display 8 den...

Страница 11: ...luded Moisten the filter paper with the water and take a reference reading across it with the Moisture Probe Then place the moistened filter paper against the surface of interest and hold in place for 30 seconds Remove the paper and place the pins of the Moisture Probe across the paper again and observe the reading Compare this reading with the original reference reading If the difference is more ...

Страница 12: ...pically the extension lead will be used when taking readings from probes that have been embedded in structures such as walls and floors 2 4 Condensator Mode Selection and Use The Condensator Mode enables the user to assess the risk of condensation occurring on surfaces or to confirm whether or not condensation is present on a surface To use the MMS as a Condensator connect a Hygrostick probe direc...

Страница 13: ...DIFF is displayed with the message AT RISK NO CONDENSATION When the surface temperature is equal to or lower than the dew point a negative TDIFF is displayed with the message CONDENSATION The progress bar is activated when TDIFF is less than 14 C above the dew point The indicator moves from left to right to signify the increasing risk and degree of condensation Table 3 below summarizes this functi...

Страница 14: ...12 was plugged into socket EC2 on the side of the instrument 2 5 Setup Mode Selection and Use The Protimeter MMS instrument has a range of features that can be selected by the user see Table 4 on the next page To enter the Setup Mode switch the instrument ON and disconnect any attachments that may be connected When the display shows three horizontal dashes press momentarily the word SETUP then app...

Страница 15: ...om the default 1 minute to 5 minutes Enter Setup Mode by pressing momentarily When the display shows scroll to T 1 by pressing XX Press X four times to display T 5 Press momentarily or wait for three seconds to return to Operating Mode The instrument now switches OFF automatically after 5 minutes Table 4 Setup Options Setup Code Setup Selection S 1 Displays temperature values in C S 2 Displays tem...

Страница 16: ...ter MMS Logging Software Note For further information see the MMS Logging Help document INS5800L supplied with the Protimeter Logging Software CD Table 5 Logging Information Mode Display Information Logged MOISTURE Meter yr mm dd hr min relative value e g 00 01 07 09 30 530 yr mm dd hr min WME value e g 00 01 07 09 30 12 5 HYGROMETER rh yr mm dd hr min rh TAIR Hygrostick SN e g 00 01 07 09 30 52 5...

Страница 17: ...ure content that is normal and safe from moisture related deterioration or decay in buildings When the Protimeter MMS moisture meter modes are selected measured values are identified as DRY AT RISK or WET 2 Is the surface temperature of a wall or other building element above or below the dew point Dew point is the temperature at which a given quantity of air becomes saturated 100 RH and forms dew ...

Страница 18: ...m as a whole Dwellings and working environments generally have an RH from 40 to 60 so there may be cause to investigate environments that register RH values outside this range Item 3 Two hygroscopic salts chlorides and nitrates may build up on the surface of walls where rising dampness or wicking occurs As groundwater moves through the wall and migrates to the surface salts tend to accumulate wher...

Страница 19: ...nstrument that will provide many years of reliable service if the following points are observed When not in use keep the MMS instrument and its accessories in the factory Carry Case Store the case in a stable dust free environment and keep it out of direct sunlight If the instrument is to be stored for more than four weeks or if the low battery power symbol appears on the display remove the batter...

Страница 20: ... 5 in 65 mm long x 12 mm Power 2 x AA batteries Measurement Ranges Moisture Meter Search Mode 0 1000 relative scale nominal depth of measurement 0 6 in 15 mm tolerance 10 relative scale Measure Mode 8 29 WME 30 100 relative scale in saturated material Hygrostick Probe Measurement Range 30 100 rh 32 to 122 F 10 to 50 C Tolerance nominal 30 40 rh 3 rh 68 F 20 C 41 98 rh 2 rh 68 F 20 C 32 to 122 F 10...

Страница 21: ...relative terms and to identify areas of concern that may warrant a more detailed investigation Having selected the Search Mode hold the bulge of the instrument against the floor slab and note the value on the LCD Slabs that register a value of 200 or less are generally considered to be in a safe air dry condition If values of more than 200 are recorded we recommend that the actual moisture level o...

Страница 22: ...Moisture sensitive coverings that are laid onto damp floors may fail in service A1 2 1 Sub Surface ERH Test Procedure without using Protimeter Humidity Sleeves To perform the sub surface ERH test complete the following steps 1 Drill 1 2 12 mm diameter clearance holes to a nominal depth of 2 50 mm at the required points of measurement POMs and remove all debris from the hole Plug or cover the holes...

Страница 23: ...undesirable to take sub surface ERH readings the best technique for determining the actual moisture condition of the slab the Hygrostick can be used in combination with a Humidity Box placed on the surface Typically Humidity Boxes are used on floors with embedded heating pipes or when a contractor is working to standards such as BS 8203 1996 UK that specify surface ERH techniques A Protimeter Humi...

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