Campbell Scientific CS440 Liquid Level Sensor - Manual (Page 5)

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CS440 Liquid Level Sensor
1. Introduction
This manual describes using the CS440, ACData Solutions’ SPXD-500
submersible pressure transducer with Campbell Scientific dataloggers.
Information provided in the manual includes datalogger-to-sensor connection,
datalogger programming, and maintenance requirements.
The CS440 Submersible Pressure Transducer is designed to provide reliable,
accurate water pressure/level measurements. The CS440 is specified for
operation over the 0
° – 50°C (32° – 122°F) temperature range. Standard
pressure ranges include 0 – 5, 15, 30, 50 and 100 PSIG (vented) as well as 30,
50 and 100 PSIA (non-vented).
The design uses an isolated silicon strain gauge sensor housed in a 316
Stainless Steel package to enhance reliability. The rugged construction makes
the CS440 suitable for water level measurement in irrigation applications,
water wells, lakes, streams and tanks. The cable incorporates a vent tube to
compensate for atmospheric pressure fluctuations and the jacket is made of
rugged polyurethane, designed to remain flexible and tough, even under harsh
environmental conditions.
2. Specifications
Electrical Specifications:
Excitation: 8 – 24 VDC
Operating Current: 4-20 mA
Operating Temperature Range: 0 ° – 60°C, nonfreezing
Pressure Measurement Specifications:
Static Accuracy: 0.1% span (B.F.S.L.) 1
Thermal Shift Zero: ±1.0% span 2 (5 PSIG Range)
± 0.40% span 2 (All Other Standard Ranges)
Thermal Shift Span: ±0.75% span 2 (5 PSIG Range)
±0.40% span 2 (All Other Standard Ranges)
Mechanical Construction:
Diameter: 1.0”
Length:
13” (includes Flex Seal/Strain Relief)
Sensor Element and Body: 316 Stainless
Top Cap and End Cone Assembly: Delrin
Other wetted materials:
Viton, Nylon, Buna-N
Cable:
Description: Shielded, 9 Conductor #24 AWG,
Polyethylene Insulators Integral Vent Tube
Diameter: 0.290” Nominal
Jacket: Polyurethane
Cable Resistance:
0.026 Ohm/Ft Typ., TCR: 0.3%/ °C