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Stainless Steel
Ideal for long-term deployment in harsh conditions
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Technical Description

The CS450 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 CS450 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 CS450 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).

CS450-L 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
  • Compensated Temperature:
    0° to 60°C
  • Temperature Accuracy: ±0.2°C
  • Overpressure: 2 x pressure range
  • Power Requirements:
    6 to 18 Vdc

Power Consumption

  • Quiescent: < 80 µA
  • Measurement/Communication:
    8 mA (1-s measurement)
  • Maximum: 40 mA

Measurement Ranges (depends on option chosen)

  • Pressure
    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:
    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)

Accuracy1

  • Standard Accuracy Option:
    ±0.1% FS TEB
  • High Accuracy Option2:
    ±0.05% FS TEB

Maximum Cable Length

  • SDI-12 (1 sensor connected to a single port): ~457 m (1500 ft)
  • SDI-12 (10 sensors connected to a single port): 60 m (200 ft)
  • RS-232: 200 ft (60 m)

Physical

  • 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
  • Length: 21.34 cm (8.4 in.)
  • Diameter: 2.13 cm (0.84 in.)
  • Distance from Black Line Etched on Housing to End of NPT Fitting:
    2.86 cm (1.13 in.)
  • Distance from Black Line Etched on Housing to End of Standard Nose Cone:
    4 cm (1.58 in.)
  • Distance from Black Line Etched on Housing to End of Weighted Nose Cone:
    11.59 cm (4.56 in.)
  • Weight no cable:
    0.18 kg (0.40 lb)
  • Cable Weight: 0.421 kg/m
    (0.283 lb/ft)
  • Weight of 25414 Weighted Nose Cone:
    0.211 kg (0.465 lb)

1 - Includes the combined errors due to nonlinearity, hysteresis, nonrepeatability, and thermal effects over the compensated temperature range, per ISA S51.1.

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

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