This product is no longer available and has been replaced by: CS456,CS451.
CS400-L 4-Wire Pressure Transducer
Services Available
Repair No
Calibration No
Free Support No


The CS400 submersible pressure transducer, manufactured by Pressure Systems, was retired in January 2009. It measured surface water, ground water, or hostile fluid levels with a static accuracy of ±0.25% FSO. A related probe, the CS405, offered a static accuracy of ±0.1% FSO. The CS400 required a 7977 resistor assembly to connect it with our data loggers.



Note: The following shows notable compatibility information. It is not a comprehensive list of all compatible or incompatible products.

Data Loggers

Product Compatible Note
21X (retired)
CR10 (retired)
CR1000 (retired)
CR10X (retired)
CR200 (retired)
CR205 (retired)
CR206 (retired)
CR210 (retired)
CR211 (retired)
CR215 (retired)
CR216 (retired)
CR23X (retired)
CR295 (retired)
CR3000 (retired)
CR500 (retired)
CR5000 (retired)
CR510 (retired)
CR800 (retired)
CR850 (retired)
CR9000 (retired)
CR9000X (retired)

Additional Compatibility Information

The probe requires two differential channels and one switched excitation output. Completing the sensor's circuit at the data logger requires the 7977 resistor assembly. The CS400 is also compatible with our PST3/8 Pump Slug system (retired).

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