OEM Products / 29326-L
29326-L CS451 Pressure Transducer for OEMs

Overview

This version of the CS451 pressure transducer is for OEMs. It does not have a label so that the OEM can attach their own branding.

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Benefits and Features

  • Quality construction ensures product reliability
  • Rugged stainless-steel case protects piezoresistive sensor
  • Compatible with most Campbell Scientific dataloggers
  • Fully temperature-compensated
  • Low-power sleep state between measurements reduces power consumption
  • Optional weighted nose cone facilitates submersion
  • NPT fitting allows it to be used in closed-pipe applications
  • Quick shipment after receipt of order (ARO)
  • Compatible with the A150 Desiccated Case, which allows it to be connected to the CWS900 and used in a wireless sensor network

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Detailed Description

The 29326 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 29326 has several pressure range options and two accuracy options (see Ordering). 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 CWS900 Wireless Sensor Interface (for use in a wireless sensor network) or to be connected to a prewired enclosure (see Ordering Information).

Specifications

Measurement Time < 1.5 s
Outputs SDI-12 (version 1.3) 1200 bps; RS-232 9600 bps
Resolution 0.0035% FS
Operating Temperature -10° to +80°C
WARNING: Sensor could be damaged if encased in frozen ice.
Compensated Temperature 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
Diameter 21.34 mm (0.84 in.)
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

Power Consumption

Quiescent < 50 µA
Measurement/Communication 8 mA (1 s measurement)
Maximum 40 mA

Pressure Measurement Range

Option -2 ≤ 2.9 psig (20 kPa)
Option -7 ≤ 7.25 psig (50 kPa)
Option -14 ≤ 14.5 psig (100 kPa)
Option -29 ≤ 29 psig (200 kPa)
Option -72 ≤ 72.5 psig (500 kPa)
Option -145 ≤ 145 psig (1000 kPa)

Depth of Fresh Water Measurement Range

Option -2 ≤ 2.0 m (6.7 ft)
Option -7 ≤ 5.1 m (16.7 ft)
Option -14 ≤ 10.2 m (33.4 ft)
Option -29 ≤ 20.4 m (67 ft)
Option -72 ≤ 50.9 m (167 ft)
Option -145 ≤ 102 m (334.5 ft)

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.

Maximum 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
RS-232 60 m (200 ft)

Air Gap

Standard & Weighted Nose Cone 0.653 cm (0.257 in.)
NPT Fitting 2.72 cm (1.07 in.)

Compatibility

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

Dataloggers

Product Compatible Note
21X (retired)
CR10 (retired)
CR1000
CR10X (retired)
CR200X (retired)
CR206X (retired)
CR211X (retired)
CR216X (retired)
CR23X (retired)
CR295X (retired)
CR3000
CR500 (retired)
CR5000 (retired)
CR510 (retired)
CR800
CR850
CR9000 (retired)
CR9000X

Additional Compatibility Information

Desiccated Case

The CS451 can be used with the A150. The A150 is a small, self-contained junction box that allows the CS451 to be connected to a continuation cable, a prewired-enclosure connector, or a CWS900-series wireless-sensor connector. Connection to a CWS900-series interface allows the CS451 to be part of a wireless sensor network.

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