Citadel CTD-ES.pdf

Citadel CTD-ESCompact Conductivity, Temperature and DepthMeter with Direct Digital OutputThe Citadel CTD-ES incorporates proven inductively coupledconductivity sensor technology with a platinum resistancethermometer and micro-machined silicon pressure sensor to providehighly accurate and stable readings.Data is output continuously via RS-232 or RS-485. All Citadel CTD-ES sensors are mounted in the flow, with no pumps or other artificialflushing devices required. Precise internal fixed references providecontinuous calibration for increased long-term reliability. The unit’s12-bit digitizer also supports up to six optional external sensors (e.g.,pH, DO, Turbidity).FEATURES• High Accuracy• ± 0.0002 S/m Conductivity• ± 0.002 Degrees Celsius• ± 0.02% Full Scale Pressure• Salinity Calculation using PSS-78• Sound Velocity Calculation using UNESCO 44• Quality Sensors• Inductive Conductivity Sensor (no Electrodes to Foul, No Pump Required)• Highly Stable Platinum Thermometer• Micro-machined Silicon Pressure Sensor• Direct Digital Output via RS-232 or RS-485• 6-channel, 12-bit Digitizer for Optional External Sensors (pH, DO, Turbidity, etc.)• Windows® Software for System Configuration, Data Acquisition, Real-TimeGraphing, and Data Analysis

SensorsCitadel CTD-ES SpecificationsConductivity (S/m) Temperature PressureSensor Type FSI Inductive Cell Platinum Thermometer Micro-machined SiliconRange 0 - 7.0 S/m (0 - 70 mS/cm) -2° to 32°C customer specifiedAccuracy ± 0.0002 S/m (±0.002 m S/cm)* ± 0.002°C* +/- 0.02% full scale*Stability± 0.0005 S/m/month(±0.005 mS/cm/month)± 0.0005°C/month +/- 0.01% full scale/monthResolution 0.00001 S/m (0.0001 m S/cm) 0.0001°C 0.001% full scaleResponse 5.0 cm at 1 m/sec flow 150 msec 25 msec* Calibrated accuracy.SYSTEMPow erDepth Rating6 to 14 VDC at 120 mA, 770 mW maximum500 meter Delrin housing or 7000 meter Titanium housingWeight Air: 4lbs. (1.8Kg.) Water: 2.7lbs. (1.2Kg.)Sample RateResolutionSpare ChannelsDataFormat:User selectable, 1.83 to 4.5 frames per second18 bits at 2 frames per second16 bits at 5 frames per second6 unipolar channels, 0 to 5 vVDC1.22 mV resolutionConductivity -mS/cmTemperature - º C (ITS-90)Pressure - decibars, (SNNNNN.NN)Sound Velocity - meter/sec (UNESCO 44)Salinity - PSU (PSS-78)Time: DateSpare Channels - count (0 to 4096)All data in ASCII, 8 data bits, one stop bit, no parityRS-232 or RS-485Baud Rate User selectable - 9600, 19200, 38400Internal ClockSpecifications Subject to Change without Notice± 5 ppm initial accuracy± 12 ppm per yearProgrammable alarm and sleep functionsInput connector jumper wake up capability14020 Stowe Drive ! Poway, CA 92064 ! e-mail: rdisales@teledyne.comTel. +1-858-842-2600 "!" Fax +1-858-842-2822 !" www.rdinstruments.comPreliminaryT-RDI Temp 0909