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ONDUCTIVITY INSTRUMENTS
ONDUCTIVITY INSTRUMENTS
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Integral Or Remote Mount Conductivity/Resistivity Transmitters
CDTX-2850 Series
U Compact Design
U Two-Wire 4 to 20 mA Output
U Automatic Test Solution Recognition
Applications
U Water Treatment and Water Quality Monitoring
U Reverse Osmosis
U Deionization
U Demineralizer, Regeneration and Rinse
U Scrubber, Cooling Tower and Boiler Protection
U Aquatic Animal Life Support Systems
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 (77ºF)] (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 (77ºF)]
(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/ºF
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, 325Ω at 18 Vdc,
600Ω 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
CDTX-2851 shown
smaller than actual size.
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CDTX-2850-RM
Remote Mount Systems
82
(3.24)
95 (3.7)
CDTX-2850-IM
CDTX-2850-RM
Remote Mount Systems
82
(3.24)
95 (3.7)
Dimensions: mm (inch)
CDTX-285X
Integral Mount Systems
95 (3.7)
Thread J-Box
95 (3.7)
0.01 Cell
CDTX-2851 or
CDTX-2850-RM/IM
with CDCE-90-001
10 to 20 MΩ
2 to 10 MΩ
0 to 2 MΩ
0 to 1 MΩ
0 to 5 MΩ
0 to 10 MΩ
85
(3.34)
(sensors sold separately)
0.10 Cell
CDTX-2852 or
CDTX-2850-RM/IM
with CDCE-90-01
0 to 2 µS 0 to 20 µS 0 to 200 µS 0 to 400 µS
0 to 5 µS 0 to 50 µS 0 to 500 µS 0 to 1000 µS
0 to 10 µS 0 to 100 µS 0 to 1000 µS 0 to 2000 µS
0 to 50 µS 0 to 500 µS 0 to 5000 µS 0 to 10,000 µS
0 to 100 µS 0 to 1000 µS 0 to 10,000 µS 0 to 20,000 µS
0 to 200 µS 0 to 2000 µS 0 to 50,000 µS 0 to 100,000 µS
CDTX-2850-RM
Remote Mount Systems
95 (3.7)
CDCE-90
1.0 cell
CDTX-2853 or
CDTX-2850-RM/IM
with CDCE-90-1
82
(3.24)
CDTX-2854 or
CDTX-2850-RM/IM
with CDCE-90-10
10.0 Cell
CDTX-2851 = 73 (2.88)
CDTX-2852 = 35 (1.38)
CDTX-2853 = 41.3 (1.63)
CDTX-2854 = 41.3 (1.63)
(Remote mount only)
CDTX-2850-RM/IM with
N/A 0 to 500 µS 0 to 5000 µS 0 to 100,000 µS 0 to 200,000 µS
N/A 0 to 1000 µS 0 to 10,000 µS 0 to 200,000 µS 0 to 400,000 µS
The 4 to 20 output ranges shown in this chart can be inverted using the internal switch resistivity ranges are listed above in BOLD
85
(3.34)
26
(1.02)
20.0 Cell
CDTX-90-20B
To Order
Model No. Description Cell Constant Insertion Length mm (inch)
CDTX-2851
CDTX-2852
CDTX-2853
CDTX-2854
CDTX-2850-IM
CDTX-2850-RM
Comes complete with operator’s manual (solutions sold separately, see last page).
Ordering Example: CDTX-2852, integrally mounted 0.1 cell constant conductivity transmitter with CDSA-1500 μS conductivity solution.
CDTX-2850-RM, remote mount conductivity transmitter with CDCE-90-10 conductivity sensor with 10.0 cell constant and CDSA-4500 μS conductivity solution.
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Integrally mounted conductivity transmitter with sensor 0.01 73 (2.88)
Integrally mounted conductivity transmitter with sensor 0.1 35 (1.38)
Integrally mounted conductivity transmitter with sensor 1 41.3 (1.63)
Integrally mounted conductivity transmitter with sensor 10 41.3 (1.63)
Threaded J-box conductivity transmitter CDCE-90 sensors sold separately
Remote mount conductivity transmitter CDCE-90 sensors sold separately
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Conductivity Cells for CDTX-2850-IM/RM Series
ONDUCTIVITY INSTRUMENTS
ONDUCTIVITY INSTRUMENTS
4.6 m (15')
cable (standard)
Reversible
152
(6)
107
(4.2)
50
(2)
0.5
(13)
fitting assembly
for submersion
mounting
¾ NPT
½" 316 SS OPT
CDCE-90-01
sensor tip
21
(0.8)
CDCE-90-001, CDCE-90-01, CDCE-90-1
Cell:
CDCE-90-001: 0.01
CDCE-90-01: 0.1
CDCE-90-1: 1.0
Conductivity Range:
CDCE-90-001: 0.010 to 100 µS
(10 KΩ to 100 MΩ)
CDCE-90-01: 1 to 1000 µS
CDCE-90-1: 10 to 10,000 µS
Temperature Compensation: Pt1000
Wetted Materials:
O-Rings: EPR
Insulator Material: PTFE
Electrodes: 316 SS
Standard Fitting: Polypropylene
Maximum Pressure:
6.9 bar (100 psi)
Maximum Temperature:
100°C (212°F)
Optional Fitting:
316 SS
Maximum Pressure:
13.8 bar (200 psi)
Maximum
Temperature:
120°C (248°F)
1
/2 NPT
Dimensions:
mm (inch)
CDCE-90-1
sensor tip
8
(0.3)
4.6 m (15')
cable (standard)
147
(5.8)
86
(3.4)
CDCE-90-001
Dimensions:
mm (inch)
Optional 316 SS
submersion adaptor
fitting ¾ NPT thread
Standard ¾ NPT/316 SS fitting
20.3 (0.8)
CDCE-90-01
4.6 m (15')
203
(8.0)
89
(3.5)
All shown
smaller than
actual size.
Dimensions:
mm (inch)
Reversible fitting assembly
for submersion mounting
20.3 (0.8)
CDCE-90-1
¾ NPT thread
CDCE-90-10 (left),
CDCE-90-20 (right),
shown smaller
than actual size.
CDCE-90-10
Cell Constant: 10.0
Conductivity Range: 100 to 200,000 µS
Temperature Compensation: Pt1000
O-Ring: EPR
Insulator Material: CPVC
Electrodes: 316 SS
Fitting Material: 316 SS
Maximum Pressure/Temperature:
100 psig @ 95°C (203°F)
CDCE-90-20
Cell Constant: 20.0
Conductivity Range: 200 to 400,000 µS
Temperature Compensation: Pt1000
O-Ring: EPR
Insulator Material: PTFE
Electrodes: 316 SS
Fitting Material: 316 SS
Maximum Pressure/ Temperature:
100 psig @ 150°C (302°F)
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ONDUCTIVITY INSTRUMENTS
ONDUCTIVITY INSTRUMENTS
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CDCE-90S-001, CDCE-90S-01,
CDCE-90S-1
Cell:
CDCE-90S-001: 0.01
CDCE-90S-01: 0.1
CDCE-90S-1: 1.0
Conductivity Range:
CDCE-90S-001: 0.010 to 100 µS
(10 KΩ to 100 MΩ)
CDCE-90S-01: 1 to 1000 µS
CDCE-90S-1: 10 to 10,000 µS
Tri-Grip
Temperature Compensation: Pt1000
Wetted Materials:
O-Ring: EPR
Insulator Material: PTFE
Electrodes: 316 SS or titanium
Tri-Grip
Maximum Pressure: 6.9 bar (100 psi)
Maximum Temperature: 120°C (248°F)
TM
Sanitary Fitting Size: 1, 11/2, 2"
TM
Sanitary Fitting: 316 SS or titanium
CDCE-90S-001-S15,
shown smaller
than actual size.
50
(2.0)
4.6 m (15')
cable (standard)
152
(6.0)
126
(5.0)
50
(2.0)
13
(0.5)
Note: Dimension shown for 1 and 1
CDCE-90S-01
sensor tip
1
" Tri-Grip
⁄
2
Dimensions:
mm (inches)
CDCE-90S-1
sensor tip
21
(0.8)
TM
sanitary fittings.
8
(0.3)
To Order
Model No. Fitting Cell Constant Material
CDCE-90-001*
CDCE-90-01*
CDCE-90-1*
CDCE-90-10*
CDCE-90-20-B
CDCE-90S-001-S15 1.5" Tri-Grip
CDCE-90S-1-S15 1.5" Tri-Grip
CDCE-90S-01-S20 2.0" Tri-Grip
CDCE-90S-1-S20 2.0" Tri-Grip
CDCE-90S-001-T15 1.5" Tri-Grip
For extended cable add “-100FTCABLE” to model number for additional cost.
*
Accessories
Model No. Description
CDSA-45
CDSA-450
CDSA-1413
CDSA-1500
CDSA-4500
CDSA-45000
45 µS conductivity solution 1 quart
450 µS conductivity solution 1 quart
1413 µS conductivity solution 1 quart
1500 µS conductivity solution 1 quart
4500 µS conductivity solution 1 quart
45000 µS conductivity solution 1 quart
3
⁄4 NPT 0.01 316 SS
3
⁄4 NPT 0.1 316 SS
3
⁄4 NPT 1 316 SS
3
⁄4 NPT 10 316 SS
3
⁄4 NPT 20 316 SS
TM
sanitary 0.01 316 SS
TM
sanitary 1 316 SS
TM
sanitary 0.1 316 SS
TM
sanitary 1 316 SS
TM
sanitary 0.01 Titanium
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