Hach Master Catalog 2025

Conductivity • Process Instruments

87

3400 Digital and Analog Contacting Conductivity Sensors 3400sc Digital Contacting Conductivity Sensors

These enhanced performance sensors are manufactured to exacting tolerances using high quality, rugged materials for demanding applications including ultra-pure water, clean-in place (CIP), and boiler/condensate monitoring. Each sensor is tested to determine its unique, absolute four-digit cell constant. Also, each sensor has a PT1000 RTD temperature element built into its tip for exceptionally fast response to changes in temperature with ±0.1ºC accuracy. The sensors measure from theoretically pure water (0.057 µS/cm or 18.2 M Ω ) up to 200,000 µS/cm. Hach’s Digital SC Controllers accept multiple digital sensor inputs, and can be user-set to measure conductivity, resistivity, TDS, salinity, or one of six calculated measurements. Compression fi tting sensors feature titanium electrodes and a compression fi tting for universal installation with up to 4 inches (102 mm) insertion depth. The 1/2-inch or 3/4-inch Order Information Prod.No. Cell Constant k Range

male NPT compression fi ttings are o ff ered in PVDF or 316 stainless steel. A longer version of this sensor is available for use with a 316 stainless steel ball valve hardware assembly to insert/retract the sensor from the process without stopping the fl ow. The longer version can also be used for insertion through a compression fi tting. Maximum insertion depth is 7 inches (178 mm).

Installation style

Installation Kit

Installation Requirement

D3422A2 D3422C3 D3422B3 D3422D3 D3422E3 D3433B8 D3433E8 D3444B8 D3444D8 D3422A1 D3455A6

0.05cm-1 1.0cm-1 0.5cm-1 5.0cm-1 10cm-1 0.5cm-1 10cm-1 0.5cm-1 5.0cm-1 0.05cm-1 0.05cm-1

0 - 100 µS/cm 0 - 2000 µS/cm 0 - 1000 µS/cm 0 - 10000 µS/cm 0 - 200000 µS/cm 0 - 1000 µS/cm 0 - 200000 µS/cm 0 - 1000 µS/cm 0 - 10000 µS/cm

Compression Compression Compression Compression Compression

1/2”NPT 3/4”NPT 3/4”NPT 3/4”NPT 3/4”NPT 3/4”NPT 3/4”NPT 3/4”NPT 3/4”NPT 1/2”NPT

316 Stainless Steel

PVDF PVDF PVDF PVDF

General purpose General purpose Boiler/Condensate Boiler/Condensate

PPS sensor body PPS sensor body

316 Stainless Steel sensor body 316 Stainless Steel sensor body

0 - 100 µS/cm 0 - 100 µS/cm

Compression Sanitary fl ange

PVDF

1-1/2” Flange

316 Stainless Steel

Please note that a Hach SC controller is required for operation, controller must be purchased separately.

3400 Analog Contacting Conductivity Sensors Order Information Prod. No. Cell Constant k Range Junction box Material Electrode Material 3422A1A 0.05cm-¹ 0 - 100 µS/cm None Compression Fitting: ½” NPT PVDF Titanium 3422A3A 0.05cm-¹ 0 - 100 µS/cm None Compression Fitting: ¾” NPT PVDF Titanium 3422B3A 0.5cm-¹ 0 - 1000 µS/cm None Compression Fitting: ¾” NPT PVDF Titanium 3422E3A 10cm-¹ 0 - 200000 µS/cm None Compression Fitting: ¾” NPT PVDF Titanium 3422C3A 1cm-¹ 0 - 2000 µS/cm None Compression Fitting: ¾” NPT PVDF Titanium 3422D3A 5cm-¹ 0 - 10000 µS/cm None Compression Fitting: ¾” NPT PVDF Titanium 3433E8A 10cm-¹ 0 - 200000 µS/cm None Graphite

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