Product description

Our moisture measuring sensors always represent the latest technology of our well-proven high frequency measuring method and offer unique precision and reliability. Since decades we are in touch with our customers to be able to always give him an innovative product perfectly fitting his needs.

Sensors of the newest generation are available by different replaceable wear protections:

• Synthetic (Standard) For standard applications. Not suitable for abrasive materials. Good sliding characteristics.
• Ceramic (replaceable)
  Extremely hard. Possesses a very high resistance against abrasion.
  Cracks may form due to hitting stones or metallic objects.
• Special rubber (replaceable)
  Wear resistant rubber with good protective properties against
  abrasions. No risk of cracks.
• Teflon (replaceable)
  Normally used in food processing technology and for sticky materials.

Accuracy: 0.1% . . . 0.5% depending on installation situation and correct calibration

Easy calibration of the sensor by integrated adjustment unit.
Output Signal: 0-10 V or 0/4-20mA - no additional processing unit required
Operating voltage: 9-30V DC (also available +15V DC and -15V DC)
Specific appointment of moisture thanks internal digital linearization of the measuring signal
Samples of application area:
• Moisture content of sand, gravels, etc in concrete production
• Reprocessing of foundry sand for desired moisture content
• Moisture content of quartz sand e.g. for glass manufacture
• Quality optimizing in food processing
• Corn production
• Fodder industry for animal food
• Ceramic powders and pastes; metal oxides
• Sludge from the sewage plants
• Soil humidity, etc

• Biosolids/ Sludge drying

 

 

Technical data

Connection to the probe	Connecting cable: 5 x 0.22 mm2 shielded Cable is assembled with metallic terminal sleeves. Plug is optional.
Signal output	Standard: 0-10 V Output load resistance: 100 kohm Option: 0-20 mA or 4-20 mA Load resistance: 500 Ohm 0.1%, TK = 25 ppm
Protection against damage by lightning	Sometimes, especially in open air installations, the probe can be damaged by lightning. In addition to reducing the risk by observing the guide lines laid down in the standard, VDE 185, Parts 1 and 2, it is necessary to equalize the potential between the probe and the processing electronic unit. This is achieved by earthing the cable shielding at both ends.
Measurement range & internal calibration	0% and % adjusting trimmer for calibrating the probe (optional) These allow one to adjust the measuring window of the probe to the desired range of moisture measurements for the material. Accessible only through a water tight screw on the probe cover.
Protection level for the probes	IP68
Maximum Signal Values	Voltage output: -0,7 V to app. 13V (RL = 100 k Ohm) Current output 0-20 mA: -1,4 mA to app.. 24 mA (Load = 500 Ohm) Current output 4-20 mA: +4 mA to app. 24mA (Load = 500 Ohm)
Abrasion Protection of Sensor	Standard: Surface material is synthetic Ceramic: 3 mm thick, extremely good resistance to abrasion but brittle Special rubber: extremley abrasion-resistant,impassible for bump/ shocks Teflon: for sticky materials and for use in the food industry
Environmental conditions	Operational: +0.5°C to +50°C (Temperature range G50, Standard) +0.5°C to +80°C (Temperature range G80, optional) permissible environmental temperature max 80 °C Storage: -25°C to +65°C
Depth of insertion of the sensor edge	9 mm Standard (synthetic material protection overlay) 11 mm with Ceramics, Rubber or Teflon overlay
Protection against	Overvoltage, polarity and short-circuit of the output All inputs and outputs are protected against disturbances with suppression filters.
Probe supply	FSV30 = 10 V-30 V DC FSV = +/-15 V (Tolerance each +/-0,5 V)
Current input	30 mA (at +15 V for voltage output of 0-10 V) 30 mA (at –15 V for voltage output of 0-10 V) 50 mA (at +15 V for current output 0-20 mA) 30 mA (at –15 V for current output 0-20 mA) 10-30 V Probes: 9V-30V DC Current input: 190 mA for 10 V Supply 120 mA for 15 V Supply 80 mA for 24 V Supply 70 mA for 30 V Supply
Material-Temperature sensor	PT100 (optional)
Conformance:	Conforms to CE standard EMV89/336EWG

Technical documentations

	Equipment Description Moisture measuring probes Type FS(x) germanenglish

Brochures

	Moisture measurement in concrete production englishgerman
	Online moisture measureung in biomasses german
	Online moisture measureung in concrete production german
	Online moisture measureung in grain german

In der Presse

	BFT - Betonwerk + Fertigteil-Technik,12/2005, Seiten 34–41 germanenglish
	BWI Beton WerkInternational (Fachzeitschriften für die Betonindustrie) 1/04 germanenglish
	CPI - Concrete Plant International (Trade Journal for the Concrete Industry) 4/03 germanenglish

Sensors in use