CS440 Liquid Level Sensor
Revision: 9/06
C o p y r i g h t © 2 0 0 6
C a m p b e l l S c i e n t i f i c , I n c .
Страница 1: ...CS440 Liquid Level Sensor Revision 9 06 C o p y r i g h t 2 0 0 6 C a m p b e l l S c i e n t i f i c I n c ...
Страница 2: ...other warranties expressed or implied including warranties of merchantability or fitness for a particular purpose CAMPBELL SCIENTIFIC INC is not liable for special indirect incidental or consequential damages Products may not be returned without prior authorization The following contact information is for US and International customers residing in countries served by Campbell Scientific Inc direct...
Страница 3: ...troduction 1 2 Specifications 1 3 Installation 2 3 1 Initial Inspection and Handling Guidelines 2 3 2 Installation Guidelines 2 4 Wiring 3 5 Programming Example 4 5 1 Using ShortCut 4 5 2 Using CRBasic 4 5 3 Using Edlog 5 6 Maintenance 6 6 1 Every Visit At Least Monthly 6 6 2 Every Three Months 7 6 3 Every Two to Three Years or on a Rotating Schedule 7 7 Troubleshooting Hints 7 ...
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Страница 5: ...rrigation 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 nonf...
Страница 6: ...s should be inspected regularly i e every two months and historical information will help to baseline desiccant replacement requirements for a given application climate Absolute pressure non vented units do not require a desiccant chamber If the cable incorporates a vent tube the vent tube is heat sealed at both ends prior to shipment and must remain sealed Remember that although the CS440 is desi...
Страница 7: ...sing a resister one side goes to the SE or H input channel with the blue wire The other end of the resistor goes to the L side for a differential measurement or G for ground on a single ended measurement The low side of the differential channel is connected to ground via a jumper wire Single Ended Color Function CR200 Series CR10 X CR510 CR1000 CR3000 CR5000 White Power 8 to 24 VDC Battery 12V Blu...
Страница 8: ...si the two values should be 0 and 5 The sections that immediately follow are for CRBasic Edlog and Keyboard Display users ShortCut users can jump ahead to the Maintenance section page 6 5 2 Using CRBasic For our CR1000 CR3000 and CR5000 dataloggers the VoltDiff instruction is used Because our CR200 series dataloggers do not support differential measurements the VoltSE instruction must be used when...
Страница 9: ... 2000 mV 400 mV 0 03125 psi mV To convert to depth in feet Depth 2 31 psi M 0 03125 psi mV 2 31 ft psi 0 7218 ft mV The offset is typically applied in the field to adjust the reading to whatever datum is used 5 3 Using Edlog Typically Instruction 2 Volt Diff is used to read the CS440 Instruction 1 Volt SE can also be used to read the CS440 Your datalogger manual provides detailed explanations of I...
Страница 10: ...20 mA or 2000 mV then the multipliers is calculated as follows for a 50 psi sensor M 50 psi 2000 mV 400 mV 0 03125 psi mV To convert to depth in feet Depth 2 31 psi M 0 03125 psi mV 2 31 ft psi 0 7218 ft mV The offset is typically applied in the field to adjust the reading to whatever datum is used 6 Maintenance Periodic evaluation of the desiccant is vital for keeping the vent tube dry To assess ...
Страница 11: ...d and or replaced as needed 7 Troubleshooting Hints Problem Unit is not responding to logger or responding erratically Suggestion Check the electrical connections White is V and Blue is Signal Return to ensure proper connection to the logger Some loggers require the use of an external termination resistor In this case the signal return is generally connected to an input together with one lead from...
Страница 12: ...t of water level If the desiccant chamber has not been properly maintained water may have condensed in the vent tube and the device should be returned to the factory for service Note that errors in uncompensated depth measurement using absolute non vented devices are expected and may or may not be significant depending on the application A barometric pressure transducer can be used to provide comp...
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