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USD$23,070.00
CDTX-2851
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Compact Design
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Two-Wire 4 to 20 mA Output
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Automatic Test Solution Recognition
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Applications
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Water Treatment and Water Quality Monitoring
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Reverse Osmosis
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Deionization
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Demineralizer, Regeneration and Rinse
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Scrubber, Cooling Tower and Boiler Protection
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Aquatic Animal Life Support Systems
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View related products - Conductivity Instrumentation
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Electronics are available in various configurations for maximum
installation flexibility. The universal-mount version is for pipe,
wall, or tank mounting and uses the CDCE-90 Series conductivity/
resistivity sensor (sold separately). It is also available as a
combined integral system configuration for in-line mounting and
includes a conductivity electrode in a choice of 0.01, 0.1, 1.0, 10.0
or 20.0 cm–1 cell constants. The CDTX-2850 is ideal for
applications with a conductivity range of 0.055 to 400,000 μS or
a resistivity range of 18.2 MΩ to 10 kΩ. All CDTX-2850 units are
built with NEMA 4X (IP65) enclosures which allow output wiring
connections with long cable runs of up to 305 m (1000 feet). The
two-wire 4 to 20 mA output has eight 4 to 20 mA output ranges for
each electrode cell constant. Each range can be inverted and is
field selectable. Standard calibration automatically recognizes
conductivity test solution values for simple field calibration.
A certification tool is available for validation of the sensor
electronics according to USP requirements.
Specifications
Materials
NPT Mount: Junction box for integral mount PBT
Universal/Remote Mount: PBT, PVDF
Automatic Solution Recognition: Conductivity values 146.93 µS, 1408.8 µS, 12856 µS [@25°C (77°F)] (test solutions per ASTM D1125-95) 10 µS, 100 µS, 200 µS, 500 µS, 1000 µS, 5000 µS, 10,000 µS, 50,000 µS, 100,000 µS [@ 25°C (77°F)] (Standard test solutions)
Electrical
Power: 12 to 24 Vdc ±10%, regulated for 4 to 20 mA output (typically called “loop powered”)
Accuracy Conductivity: ±2% of reading
Resolution Conductivity: 0.1% of reading
Temperature (For Compensation Only): <0.2°C/°F
Update Rate Single Channel Models: <600 ms
Dual Channel Models: <1200 ms
Maximum Temperature/Pressure Rating
Operating Temperature: -10 to 85°C (14 to 185°F)
Storage Temperature: -20 to 85°C (-4 to 185°F)
Relative Humidity: 0 to 95%, non-condensing
Enclosure: NEMA 4X (IP65)
Current Output
Field-Selectable Ranges
Factory Set Span 4 to 20 mA:
0.01 Cell: = 0 to 100 µS (Integral mount only)
0.10 Cell: = 0 to 1000 µS
1.0 Cell: = 0 to 10,000 µS
10.0 Cell: = 0 to 200,000 µS
20.0 Cell: (CDCE-90-20B, not for integral mount) = 0 to 400,000 µS
Maximum Loop Resistance: 50Ω at 12 Vdc, 325O at 18 Vdc, 600O at 24 Vdc
Accuracy: ±2% of output span
Resolution: 7 µA
Update Rate: <600 ms
Error Indication: 22 mA
Pure water compensation when using 0.01-cm cell and raw conductivity value <0.5 µS, the CDTX-2850 auto-switches to compensate for non-linear temperature effects found in this low conductivity (high resistivity) range.
Shipping Weight
NPT Mount Junction Box: 1.75 lb (0.75 kg)
Universal Mount: 1.75 lb (0.75 kg)
Standards and Approvals: Manufactured under ISO 9001 for quality and ISO 14001 for environmental management
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† All dollar amounts on this site are shown in US currency.
Note: Comes complete with operator’s manual (solutions sold separately, see last page).
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