SENSORS FOR FOOD AND BIOPHARMA. 4-Beam-Turbidity Meter ITM-4 Application / Specified Usage · Turbidity measurement from 0 up to 5000 NTU resp. 0 up to 1250 EBC · Filter monitoring · Phase separation of low turbid media Application Examples · · · · · Process control of brewing processes Fresh water control in the beverage industry Water- / waste water control e.g. in dairys Quality control Separator monitoring Hygienic Design / Process Connection · CIP-/ SIP-cleaning up to 130 °C · Fitting completely made of stainless steel, optical block made of PEEK, glass panes made of sapphire glass (FDA-conform) · Further process connections: dairy fl ange DIN11851, hygienic thread connection DIN11864-1 form A, Tri-Clamp, DIN fl ange Features / Advantages · · · · · · · · · · Pollution of the glass panes will be compensated Compact device, no separate evaluation unit necessary Units NTU and EBC switchable (11 ranges per unit) 4 free selectable and externally switchable measurement ranges Smallest measurement range 0...5 NTU resp. 0...1 EBC Highest measurement range 0...5000 NTU resp. 0...1250 EBC Smallest pipe diameter DN 25 Colour independent measurement principle (wave length 860 nm) Switching and analog output 3-A certificate with process connection Tri-Clamp and hygienic thread connection Options / Accessories · Electrical connection with M12 plug-in connector · Preassembled cable for M12 plug-in connector Measurement Principle Sender 2 Measuring Principle of the 4-Beam-Turbidity Meter The ITM-4 measures turbidity using the 4-beam alternating light method. The transmitter contains two infrared senders and two infrared receivers arranged at right angles to each other. To determine the turbidity value, the senders are alternately activated. When sender 1 is active, receiver 1 detects the transmitted light and receiver 2 detects the light scattered at 90°. When sender 2 is active, the situation is reversed. An exact turbidity value is calculated from the four measured values of a measurement cycle. Since a transmitted light measurement is available as a reference for each 90° scattered light measurement, interference factors such as contamination of the optics or component ageing can automatically be compensated. Disturbing influences from the sporadic occurrence of solids and air bubbles are largely cancelled out due to the evaluation of multiple measurement cycles.

Specification Specification

Mechanical Installation | Notes Mechanical Connection / Installation ·· The device has to be installed in that way that the fitting is entirely filled with media. Air or air bubbles are detected as turbidity. ·· Correct installation: ·· Before or into an ascending pipe. ·· Wrong installation: ·· Before or into a descending pipe. ·· Into the highest point of a pipe, air bubbles will concentrate there Flow direction of media Flow direction of media ·· Pay attention to the above-mentioned drawings! ·· Do not open the screws at the optical PEEK-block! Conditions for a measurement point acc. to 3-A...

Installation Electrical connection ITM-4 Turning the display 1. Loosen the set screws (1) on top and bottom resp.on the left and right. 2. Turn the head to the desired position. Turnig is possible only in steps of 90°! 3. Tighten the two set screws (1). Fig.: Turning the display External measurement range selection • The turbidity meter is delivered with measurement range 1 (0...1000 NTU / 0-1000 EBC = 4...20 mA) • Range 2 (E1=24 V DC), range 3 (E2=24 V DC) and range 4 (E1=24 V DC and E2=24 V DC) can be chosen by means of the ratedsignal +24 V DC (18...36 V DC) at the inputs on pin 7, 8 and 9....

Display Ttirbldlty Measuring Unit After Imin, the device automatically switches back to display mode. Legend A-Symbol "current output overload": will be displayed if the measured value is higher than the measurement range. Iout: > 20 mA (max. 21,6 mA) AAAA-Symbol the current measured value is higher than 5000 NTU resp. 1250 EBC Iout: > 20 mA (max. 21,6 mA) 1 (top left) current editable measurement ◊-Symbol (bottom left) the value aside is now editable by using the arrow-buttons Switching Point Switch Function

Dimensional Drawings | Advices FOOD Dairy flange connection ITM-4-GG Hygienic thread connection ITM-4-HH DIN flange ITM-4-DF Transport / Storage ·· No outdoor storage ·· Dry and dust free ·· Not exposed to corrosive media ·· Protected against solar radiation ·· Avoiding mechanical shock and vibration ·· Storage temperature 0...40 °C ·· Relative humidity max. 80 % Reshipment ·· Sensors shall be clean and must not be contaminated with dangerous media! Please note the advice for cleaning on page 8! ·· Use suitable transport packaging only to avoid damage of the equipment! Cleaning / Maintenance...

Dimension Tables | Accessories Total length L of the fitting (tolerance ±2 mm) and weight 1.4305 (303), IP 69 K, unshielded PVC-cable 4-pin, length 5 m PVC-cable 4-pin, length 10 m PVC-cable 4-pin, length 25 m PVC-cable 5-pin, length 5 PVC-cable 5-pin, length 10 m PVC-cable 5-pin, length 25 m brass nickel-plated, IP 67, shielded PVC-cable 4-pin, length 5 m PVC-cable 4-pin, length 10 m PVC-cable 4-pin, length 25 m PVC-cable 5-pin, length 5 m PVC-cable 5-pin, length 10 m PVC-cable 5-pin, length 25 m factory certificate 2.2 acc. to EN10204 (only product contacting surface) factory calibration certificate...

Product Information ITM-4 Order Code ITM-4 Process Connection / Diameter GG25 (diameter DN25; process connection dairy flange DN25 acc. to DIN11851) GG40 (diameter DN40; process connection dairy flange DN40 acc. to DIN11851) GG50 (diameter DN50; process connection dairy flange DN50 acc. to DIN11851) GG65 (diameter DN65; process connection dairy flange DN65 acc. to DIN11851) GG80 (diameter DN80; process connection dairy flange DN80 acc. to DIN11851) GG100 (diameter DN100; process connection dairy flange DN100 acc. to DIN11851) HH25 (diameter DN25; process connection hygienic...