ITM-3 Relative Turbidity Monitor

For multiple products in the same line

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The Anderson ITM-3 combines a proven optical backscatter light technology with the latest generation of electronics to provide an expanded feature set and simple user interface yielding a highly adaptable optical sensing device. Standard features of the ITM-3 include a 4-20mA output of the measured turbidity which can be assigned to 5 selectable ranges that can be programmed via the internal interface or configured so any two of them can be remotely selected via a 24 VDC digital input. This feature allows a single unit to be used for multiple products in the same line, with an output that can be set for the optimal resolution as required. A backlit dual line LCD display is included for set-up as well for local indication of the relative turbidity level and switched output status. And finally, a digital output is provided with adjustable setpoint and hysteresis for simplified integration in to a plant process. Wiring is accomplished via standard M12 quick disconnect receptacles, and the housing is IP69K/Nema 4X rated. Our standard lens material is sapphire which has proven the most durable in the intended applications. Applications for the ITM-3 include detection and automation of product to product changeovers as well as product to water interfaces in traditional dairy and beverage processes. The unit can also be used to monitor CIP return lines for presence or absence of product allowing for optimized flush water use. It’s also been used for yeast harvest automation in breweries and for leak detection downstream of filters. Anywhere a change in turbidity can be used to monitor, alarm, or automate may be another great place to install an ITM-3.

Features

  • Cost effective optical technology for media > 2,000 NTU
  • 4-20mA plus switching in one sensor
  • Back-lit LCD for set-up and monitoring
  • 5 ranges, two remotely selectable
  • Completely independent of color changes
  • 3-A Compliant; Third party verified in accordance with standard 46-03

Applications

  • Transition monitoring for startup, changeovers and shut-down/ recycle
  • CIP return line monitoring
  • Automation of yeast harvesting in breweries
  • Integrity monitoring of filters
 
Specifications
Accuracy
±2% (Relative Turbidity Units)
Repeatability
≤ ±1% of full scale
Operating Range
2000 NTU to White standard / 4-20mA span selectable to 5 ranges: 0-10, 20, 50, 100,200% one remotely selectable via digital input / 2000 NTU / 5% of 100% scale
Process Temperature Limits
32 - 212°F (0 - 100°C)
Ambient Temperature Limits
14 - 140°F (-10 - 60°C )
Response Time
adjustable 0, 1, 3, 6, 13 and 25 sec.
Supply Voltage
18 to 36 VDC, 150mA max, galvanically isolated
Analog Output
4-20mA active(scaled to measurement range)
Switching Output
Active 50mA, short circuit proof
Output Setpoint
0-200%
Output Hysteresis
factory set at 5%, adjustable 0-100%
Inputs
18 to 36 VDC, galvanically isolated
Electrical Connection
(2) M12 plugs
Process Connection
ASME Sanitary Clamp
Display
Backlit LCD, 2 x 8 digit
Pressure Limits
232 psig (16 bar)
Fitting Materials and Finishes
1.4404 (316L SS)

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“Industrial Technical Services is a single source Instrumentation and Automation company. We provide certified calibrations, PLC programming, custom controls and Panels”.

 

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