Product Details

AquaSensors Toroidal Conductivity DataStick



Product Features


DataStick provides universal conversion of sensor signals and interactive communications for measurement, calibration, configuration and diagnostics

:: High resolution measurement
:: Pre-calibrated (no field calibration required)

:: Plug and play sensor heads

:: 0 to 2S/cm range

:: Offered in a variety of materials

:: Direct data reporting (24-bit)

:: Plug and play industrial communications adapters




Product Specification



Range: 0 to 2,000,000 μS/cm (*2 S/cm)


Resolution: 4.5 significant digits


Accuracy: 0.1% of reading

Operational Environment

PEEK Sensor Head
Temperature Range: –5 °C to 100 °C
Maximum Pressure: 200 psig @ 100 °C
Maximum Flow Rate: 10 ft/second
CPVC Sensor Head
Temperature Range: –5 °C to 75 °C
Maximum Pressure: 85 psig @ 75 °C
Maximum Flow Rate: 10 ft/second


Voltage Range: 10 to 30 VDC
Maximum Power: 200 mW
Typical Power: 120 mW


O-rings: Viton® (other materials available)
Sensor Head Material: CVPC, PEEK
1.2 lbs (PEEK or CPVC)
2.6 lbs (316 Stainless Steel)

Units of Measure

Measurement Units: μS/cm, TDS, % conc.
Temperature Units: °C, °F


Zero: In dry air
Span: 1 point
Temperature: 1 point

Compensation Options##

Linear: % per °C


Immunity & Emissions: CE Certified 89/336/EEC:
CISPER 11, EN61000 (-4-2,-4-3,-4-4,-4-6, 4-8)
Safety: cULus Listed; 367G E303570
Hazardous Locations: Haz Loc Class 1, Division
2, Groups A, B, C, D. Max Ambient 80 °C

+Typical at 25 °C Performance unaffected by cable length
** Class II DC power supply required
# Toroidal are pre-calibrated at the factory
## Temperature can be entered manually
*1 S/cm = 1,000,000 μS/cm



Chemical production, Metal finishing, Semiconductors, Pulp & paper,Food processing, Pharmaceuticals - Chemical concentration control, Leak detection in heat exchangers– Acid and caustic dilution – Wet chemical scrubbers – Cooling towers– Plating bath control – Parts cleaning & rinsing– Pickling bath control– Waste streams– Black, white, or green liquor– Pulp bleaching– Vegetable rinsing– Chemical peeling– Sanitization (CIP)


Ordering Information (Toroidal Conductivity DataStick)


Part No.




Body Material (b)

1 = 316 Stainless Steel
2 = CPVC
3 = PEEK

Mounting (t)

1 = NPT front/back
2 = 1 inch NPT front only
4 = 2 inch Tri-clamp
5 = 2.5 inch Tri-clamp



Body Material (b)

2 = CPVC
3 = PEEK

CA-b-nw-x-y Communications Adapter
Body Material (b)

1 = 316 Stainless Steel
2 = CPVC
3 = PEEK

Communications (nw)

1A = RS232 ASCII
2B = Modbus RTU
2A = Modbus RS232
4B = CANopen
7R = Ethernet
5R = DeviceNet
8R = USB

Cable Length (x)

1 = 10 feet
2 = 20 feet
3 = 30 feet

Cable Termination (y) A = Stripped Wires
Note:Consult for additional configurations and accessories


Thermo Scientific AV38 DataStick Local Monitor and Controller


Features & Benefits


:: Connects to any DataStick system

:: Convenient ¼ DIN enclosure

:: Display sensor and temperature data

:: Menu functions: Calibration, configuration and diagnostics, Digital protocol options for remote measurement, calibration, configuration and diagnostics

:: Two 4 to 20 mA current outputs

:: Two Form C relays for alarm, control and wash

:: PID controller for use with pH and conductivity

:: 7 conduit knockouts for easy cabling




Product Specification


Mounting Options

Wall-mount Enclosure: NEMA 4X
Panel-mount: ¼ or ½ DIN NEMA
4X panel mount available
Display Only: with NEMA 4X gasket

User Interface

Display: 2 line by 16 character LCD
Backlight: High contrast green
Keypad: 4 directional arrows, MENU,

Environmental Conditions

Ambient Operating Temperature Range:
–20 to 65 °C
Maximum Relative Humidity:
95% non-condensing

DataStick Sensor Connections

Supports 1 to 255 Modbus® RTU DataStick Sensors of any type
Supported Sensors: pH, ORP, two electrode conductivity, two electrode resistivity, toroidal
conductivity, dissolved oxygen (ppm and ppb) dissolved ozone, drinking water and wide-range turbidity, suspended
solids and free chlorine

4 to 20 Milliamp Current Output Options

Assignable parameters
PID function when pH or conductivity parameter selected Loop power provided by AV38


Two 1 amp Form C relays with NO and
NC contacts
Assignable parameters
Configured for alarm, control and timer


Options to Host Computer Network: MODBUS RTU, DeviceNet, Modbus RS232, RS232 ASCII, CANopen, Ethernet IP, Modbus TCP, TCP/IP
Others: Consult factory

Power Supply

Input: 10 to 30 VDC or 100 to 240 VAC
Power: 2W at 25°C


Meets CE requirements for heavy
industrial use


Order Information


Part No.



Local Monitor/Controller

Current Outputs (v)

B = One
C = Two

Mounting (w)

B = ¼ DIN NEMA 4X Wall-mount Enclosure

Communications (x)

0 = None
1 = RS232 ASCII
2 = Modbus RS232
4 = MODBUS RTU (for Modbus + Profibus)
5 = DeviceNet
6 = CANopen
7 = Ethernet IP, Modbus TCP, TCP/IP

Relays (y)

A = None
C = Two

Power (z)

1 = 24 VDC
2 = 100 to 240 VAC

Note: Consult for additional configurations and accessories


Download Brochure

Toroidal Conductivity DataStick
AV38 Datastick Local Monitor And Controller

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