CS451

Stainless-Steel Pressure Transducer
CS451

CS451

Orderable

Stainless-Steel Pressure Transducer

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Model:
CS451
Item Number:
45036
Warranty:
1 year

Overview

The CS451 is a pressure transducer with 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.

The CS451 replaces the CS450 transducer. The new transducers have a smaller gap between the water ports and the diaphragm so that less air is trapped that the user must remove during deployment. Trapped air causes the transducer's readings to drift as the air slowly dissolves into the water.

Key Advantages

Stainless Steel
Ideal for long-term deployment in harsh conditions

Technical Description

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 A151 Vented, Single Sensor Terminal Case that allows the CS451 to be connected to a  prewired enclosure (see Ordering Information).

Benefits

  • Quality construction to ensure product reliability
  • Rugged stainless-steel case protecting the piezoresistive sensor
  • Compatible with most Campbell Scientific data loggers
  • Fully temperature-compensated
  • Low-power sleep state between measurements to reduce power consumption
  • Optional weighted nose cone to facilitate submersion
  • Optional NPT nose cone to enable usage in closed-pipe applications
  • Quick shipment after receipt of order (ARO)

Specifications

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
Top Cone Material
Delrin
Body Material
316L stainless steel
Element Material
316L stainless steel
Distance
2.54 cm

(1 in.)
Distance from black line etched on housing to end of NPT fitting

2.3 cm

(0.9 in.)
Distance from black line etched on housing to end of standard nose cone

9.9 cm

(3.9 in.)
Distance from black line etched on housing to end of weighted nose cone

Ingress Protection
Exceeds IP68
Diameter
21.34 mm

(0.84 in.)

Cable Outer Diameter
0.589 cm

(0.232 in.) nominal

0.599 cm

(0.236 in.) maximum

Length
213.36 mm

(6.875 in.)

Cable Weight
0.0421 kg/m

(0.0283 lb/ft)

Weight
0.17 kg

(0.37 lb) without cable

Air Gap

Standard & Weighted Nose Cone
0.653 cm

(0.257 in.)

NPT Fitting
2.72 cm

(1.07 in.)

Power Consumption

Quiescent
< 50 µA
Measurement/Communication
8 mA

(1 s measurement)

Maximum
40 mA

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

Accuracy

Standard Accuracy Option
±0.1% full-scale-range TEB


Total Error Band (TEB) includes the combined errors due to nonlinearity, hysteresis, nonrepeatability, and thermal effects over the compensated temperature range, per ISA S51.1.

High Accuracy Option
±0.05% full-scale-range TEB


The high accuracy (±0.05% full-scale range) option is not available for the 0 to 2.9 psig range option.

Total Error Band (TEB) includes the combined errors due to nonlinearity, hysteresis, nonrepeatability, and thermal effects over the compensated temperature range, per ISA S51.1.

Cable Length

Standard Lengths
5, 10, 15, 25, 30, and 60 m (16.4, 32,8, 49.2, 82.0, 98.4, and 196.9 ft), as well as a user-defined length
SDI-12
~457 m (1500 ft)

maximum, 1 sensor connected to a single port

60 m (200 ft)

maximum, 10 sensors connected to a single port

RS-232
60 m (200 ft)

maximum

Common Accessories

(6)

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Ships With

(1)
  • Calibration Certificate

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