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WATER QUALITY SENSORS
Water quality transmitters monitor Temperature, pH, Conductivity, Dissolved Oxygen, and ORP/Redox
water quality transmitters,water quality sensors FEATURES:
  • Fully encapsulated electronics
  • 4-20 mA output
  • Marine grade cable with strain relief
  • Stainless steel housing
To Order Call 1-800-876-1172
Water Quality Sensors Options & Prices
On this page:

. Water Quality Sensor's Product Description
. Temperature Sensor
. pH Sensor
. Conductivity Sensor
. Dissolved Oxygen Sensor
. Optical Dissolved Oxygen Sensor
. ORP/Redox Sensor
. Water Quality Sensors Options & Prices

Downloads (PDF):

. Temperature Sensors Brochure
. pH Sensor Brochure
. Conductivity Sensor Brochure
. DO Sensors Brochure
. Optical DO Sensors Brochure
. ORP/Redox Sensors Brochure
. Water Quality Sensor Manual*
. Conductivity Sensor Manual*
. Optical DO Sensors Manual*

*May take several minutes to download, depending on your internet connection speed.
Additional Information:

. Turbidity Sensor & Meter
. Handheld Multiparameter Probe
. Water Quality Testing Kit
. Water Quality Product Support

Water Quality Sensors Product Description
Global Water's Water Quality Sensors are rugged, industrial grade sensors designed for direct immersion or insertion into water streams.  Most water quality sensors are powered by 10 to 36 VDC and all water quality sensors have a linear 4-20mA output.  25 ft cable lengths are standard, with optional cable lengths to 500 ft.
WQ101 TEMPERATURE SENSOR
Water quality temperature sensor Output: 4-20 mA
Range: -50°C to +50°C
Accuracy: ±0.2°F or ±0.1°C
Maximum Pressure: 40 PSI
Operating Voltage: 10-36 VDC
Current Draw: Same as sensor output
Warm Up Time: 5 seconds minimum
Operating Temperature: -50° to +100°C
Size of Probe: 3/4" diameter x 4 1/2" long
Weight: 1/2 lb.

Download water quality sensors brochure and manual
View pricing information
WQ201 pH SENSOR
Water quality pH transmitter Output: 4-20 mA
Range: 0-14 pH
Accuracy: 2% of full scale
Maximum Pressure: 40 PSI
Operating Voltage: 10-30 VDC
Current Draw: 5.5 mA plus sensor output
Warm Up Time: 3 seconds minimum
Operating Temperature: -5° to +55°C
Size of Probe: 1 1/4" diameter x 10" long
Weight: 1 lb.

Download water quality transmitters brochure and manual
View pricing information
WQ-COND CONDUCTIVITY SENSOR
Water quality conductivity sensor Output: Dual 4-20 mA (Conductivity and Temperature)
Conductivity Range: 0-200 uS/cm, 200-2000 uS/cm, 2-20 mS/cm, 20-200 mS/cm, and 200-2000 mS/cm
Conductivity Accuracy: +0.5% of reading
Temperature Compensation: automatic (2%/°C normalized to 25°C)
Maximum Pressure: 35 psi (82 ft (25m))
Operating Voltage: 10-36 VDC
Current Draw: 20 mA plus sum of both sensor outputs
Warm Up Time: 3 seconds minimum
Operating Temperature: 23 to +158°F (-5 to +70°C)
Dimensions: 8 inch L x 0.86 inch Diameter (202 mm L x 22 cm Dia.)
Weight: 8 oz (227 g) plus cable

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WQ401 DISSOLVED OXYGEN SENSOR
Dissolved Oxygen water quality sensor Output: 4-20 mA
Range: 0-100% Saturation, 0-8 ppm, temperature compensated to 25°C
Accuracy: ±0.5% of full scale
Maximum Pressure: 40 PSI
Operating Voltage: 10-36 VDC
Current Draw: 15.5 mA plus sensor output
Warm Up Time: 10 seconds minimum
Operating Temperature: -40° to +55°C
Size of Probe: 1 1/4" diameter x 11" long
Weight: 1 lb.
Membrane: 0.001 FEP Teflon (standard)
Combined Error: 2% FS

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WQ-FDO OPTICAL DISSOLVED OXYGEN SENSOR
Optical Dissolved Oxygen water quality sensor Output: Dual 4-20 mA (Partial Pressure and Temperature)
Partial pressure range: 0-400 mbar
Accuracy: ± 0.5 % of value
Maximum Pressure: 35 PSI (25m/82ft water depth)
Operating Voltage: 10-30 VDC
Current Draw: 24 mA plus both sensor outputs
Warm Up Time: 6 seconds minimum, 8 recommended
Operating Temperature: 32 to +122°F (0 to +50°C)
Size of sensor: 8 inch L x 0.86 inch Diameter (202 mm L x 22 cm Dia.)
Sensor Construction: Acetyl, stainless steel, cast epoxy
Weight: 8 oz (227 g) plus cable

Download water quality sensors brochure and manual
View pricing information
WQ600 ORP/REDOX SENSOR
Water quality ORP transmitter Output: 4-20 mA
Range: -500 to +500mV
Accuracy: 2% of full scale
Maximum Pressure: 40 PSI
Operating Voltage: 10-36VDC
Current Draw: 0.2 mA plus sensor output
Warm Up Time: 3 seconds minimum
Operating Temperature: -40° to +55°C
Size: 1" diameter x 10 1/2" long
Weight: 1 lb.

Download water quality sensors brochure and manual
View pricing information
Water Quality Sensors Options & Prices
Prices listed are for United States and Canada only.  Call or e-mail us for pricing in other countries.
Terms and Conditions

WQ101 Water Temperature Sensor (PN# DA0000) $333
WQ201 pH Sensor (PN# DB0000) $735
WQ-Cond Conductivity Sensor (PN# DCA500)
4-20mA output.  Includes 25 ft of cable.
$825
WQ401 Dissolved Oxygen Sensor (PN# DD0000) $891
WQ-FDO Optical Dissolved Oxygen Transmitter
Includes 25 ft of cable. (PN# DD0500)
$1,288 Optical dissolved oxygen transmitter,Optical dissolved oxygen sensor,Optical DO
WQ600 ORP/Redox Sensor (PN# DE0000) $700
WQEXC Extra Cable (PN# DH0000)
Standard water quality sensors include 25 ft of cable, but can be purchased with up to 500 ft of cable.
$2.10/ft
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