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Campbell Scientific

CS451 Stainless Steel Pressure Transducer

WaterLevel Measurement & Monitoring

The CS451 is a pressure transducer with a a stainless-steel case. It is used for water-level measurements and can be submerged in most canals, wells, ponds, lakes, and streams. The CS451 outputs either a digital SDI-12 or RS-232 signal to indicate observed pressure and temperature. This output can be read by many of our data loggers. Read more.

Quantity

Overview

The CS451 consists of a piezoresistive sensor and a temperature sensor housed in a 316L stainless-steel case. It has a rugged Hytrel cable that remains flexible, even under harsh environmental conditions. The cable incorporates a vent tube to compensate for atmospheric pressure fluctuations. The vent tube terminates inside a desiccant tube, which prevents water vapor from entering the inner cavity of the transducer. The sensor ships with a desiccant tube that can be replaced in the field.

The CS451 has several pressure range options and two accuracy options (see Ordering Info). The standard accuracy option provides ±0.1% FS TEB over the 0° to 60°C temperature range. The high accuracy option provides ±0.05% FS TEB over the 0° to 60°C temperature range and includes a calibration certificate. TEB is the combined errors due to nonlinearity, hysteresis, non-repeatability, and thermal effects over the compensated temperature range, per ISA S51.1. Please note that the high accuracy option is not available for the 0 to 2.9 psig range option.

Campbell Scientific offers the A150 Desiccated Case that allows the CS451 to be connected to a prewired enclosure

Specification

Measurement Time

< 1.5 s

Output Options

SDI-12 (version 1.3) 1200 bps; RS-232 9600 bps

Water Level Resolution

0.0035% FS

Worst-Case Temperature Resolution

0.006°C

Dry Storage Temperature Range

-40° to +100°C
WARNING: Sensor could be damaged if encased in frozen ice.

Operating Temperature Range

0° to 60°C
WARNING: Sensor could be damaged if encased in frozen ice.

Temperature Accuracy

±0.2°C

Overpressure

2 x pressure range

Power Requirements

6 to 18 Vdc

Cable Type

Hytrel Jacket, five conductor, 26 AWG

NPT Fitting

1/4-in. NPS

Ingress Protection

Exceeds IP68

Diameter

21.34 mm (0.84 in.)

Standard Accuracy Option

±0.1% full-scale-range TEB

High Accuracy Option

±0.05% full-scale-range TEB

Max. Cable Length (SDI-12)

~457 m (1500 ft)
1 sensor connected to a single port

60 m (200 ft)
10 sensors connected to a single port

Max. Cable Length (RS-232)

60 m (200 ft)

Measurement Ranges at Fresh Water Depths

0 to 2.0 m (6.7 ft)	0 to 2.9 psig The high accuracy (±0.05% FS) option is not available for the 0 to 2.9 psig range option. 0 to 20 kPa The high accuracy (±0.05% FS) option is not available for the 0 to 2.9 psig range option.
0 to 5.1 m (16.7 ft)	0 to 7.25 psig 0 to 50 kPa
0 to 10.2 m (33.4 ft)	0 to 14.5 psig 0 to 100 kPa
0 to 20.4 m (67 ft)	0 to 29 psig 0 to 200 kPa
0 to 50.9 m (167 ft)	0 to 72.5 psig 0 to 500 kPa
0 to 102 m (334.5 ft)	0 to 145 psig 0 to 1000 kPa