This product is no longer available and has been replaced by: CS456.
CS420-L Druck PDCR 1830-8388 Submersible Pressure Transducer
Services Available
Repair No
Calibration No
Free Support No


The CS420 was manufactured by Druck for use in surface, groundwater, or hostile fluid applications. It was quite similar to the CS425 (retired also), but offered increased static accuracy. The sensor's accuracy was ±0.1% FS, BSL (combined non-linearity, hysteresis, and repeatability). The CS420 featured a titanium body with an isolated diaphragm and NEMA6 (IP68) ingress protection to 2300 feet of water.

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Detailed Description

The CS420 was removed from our pricing system on December 5, 2008.


Output Voltage
  • 25 mV for 1 psig range
  • 50 mV for 2.5 and 5 psig ranges
  • 100 mV for ranges 10 psig and above
Operating Temperature Range -2° to +30°C (compensated)
Diameter 2.0 cm (0.8 in.)
Length 10.2 cm (4.0 in.)
Weight 1.36 kg (3 lb)


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)
CR200X (retired)
CR206X (retired)
CR211X (retired)
CR216X (retired)
CR23X (retired)
CR295X (retired)
CR3000 (retired)
CR500 (retired)
CR5000 (retired)
CR510 (retired)
CR800 (retired)
CR850 (retired)
CR9000 (retired)
CR9000X (retired)

Additional Compatibility Information

Data Logger Considerations

Excitation voltage from the data logger and either one (four-wire gages) or two (six-wire gages) differential channels are required. Four wires can be used where cable lengths are short; six wires compensate for excitation voltage loss on long cables, thereby improving accuracy.

PST System

The CS420 is NOT compatible with the PST system. [Underwater connectors for vented transducers are available. Contact Druck for pricing and details.]

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