LI-610 Dew Point Generator Brochure

Dew Point Range: 0 to 50°C (limited to 35°C below the cooling water temperature)Accuracy: ± 0.2°C (0–50°C)Stability: < 0.02°C per day at 25°C typical; < 0.04°C per day at 25°C maximumNoise Level: 0.01°C peak-to-peakRepeatability: ± 0.01°CResponse Time: Typically 15 seconds per °C when changing from ambient to a higher dew point; 30 seconds per °C for dew points lower than ambientTemperature Sensor: Platinum resistance temperature detector (RTD)FlowFlow Rate: Adjustable; typically 2.0 liters per minuteFlow Meter Type: Dwyer series RMA. 2.5 liters min-1 full scaleFlow Meter Accuracy: ± 4% of full scale readingFlow Outputs: Two rapid connect hose fittings for 4 mm ID by 6 mm OD plastic tubing. Accepts 1/4" OD tubing with 1/8 to 3/16" IDMaximum Input Flow: 2 liters min-1. Contact LI-COR about using higher input flow ratesAnalog Output: 0–5 Volts, 100 mV per °CCommand Input: 0–5 Volts, 100 mV per °CDisplay: 4 1/2 digit LCD for displaying dew point set temp (°C), actual dew point temp (°C), or battery voltageDisplay Resolution: 0.01°COperating Range: 0 to 50°C, 0 to 100% RH Weight: 7.86 kg (17.4 lb) Size: 23.5H × 21W × 28.5D cm (9 × 8.1 × 11") Ordering InformationLI-610 Portable Dew Point GeneratorIncludes 610-01 AC Module and 610-04 BNC to mV Recorder LeadsAccessories610-02 RH Calibration AccessoryFor calibrating humidity sensors in the LI-6200 and LI-1600610-04 BNC to mV Recorder Leads For mV input or output. One included with the LI-610; for both millivolt input and output, order a second 610-046200B Rechargeable Battery4 hour battery life at 25°C and 10°C dew pointLI-6020 Battery Charger92-138/184-276 VAC, 47-63 Hz Charges up to four 6200B batteriesLI-610 PortableDew Point Generator®A Precision Water Vapor Source For Field or Laboratory UseLI-610 PortableDew Point GeneratorSPECIFICATIONSDoc #980-066040103LI-610 with the LI-7500 CO2/H2O Open Path AnalyzerLI-COR is an ISO 9001 Registered Company.LI-610 with 6200BRechargeable Battery andLI-6020 Battery ChargerLI-610 with the LI-7000 CO2/H2OClosed Path Analyzer® 4421 Superior Street • P.O. Box 4425 • Lincoln, Nebraska 68504 USA North America: 800-447-3576 • International: 402-467-3576 FAX: 402-467-2819 • www.licor.com • envsales@licor.com Air is bubbled through water reservoirs in two nickel-plated con-densers to completely saturate the air stream with water vapor. The temperature of each condenser is precisely controlled to thedew point target by Peltier thermoelectric coolers. An internalradiator with a cooling fan dissipates heat from the coolers, pro-viding a completely self-contained cooling system.The water vapor stream exits the condensers via a port on the frontpanel (designed for 1/8" or 4 mm ID tubing) or can be split to asecond port. An internal pump provides typical flow rates of 0 to2.0 liters per minute.Instrument CalibrationsThe high accuracy and stability of the LI-610 make it an excellentinstrument to calibrate relative humidity sensors and to check thecalibration of dew point hygrometers. An equation is provided toconvert dew point temperature to relative humidity, assuming thattemperature is accurately measured. A chart is also provided forquick conversions in the field.The LI-610 can be used to calibrate CO2/H2O analyzers. An airstream from the LI-610 is directed through a desiccant to set theanalyzer's zero, and the second airstream is used to set the span.Continuous OperationThe LI-610 can provide a continuous air stream of known dewpoint to photosynthesis and stomatal conductance measurementchambers, or for other applications where a known supply of watervapor is required.Under typical operating conditions, the LI-610 can provide 4 to 8hours of continuous operation before the condenser needs to berefilled. CalibrationCondenser temperature is precisely measured by a PlatinumResistance Temperature Detector (RTD). Temperature calibrationaccuracy is assured through transfer calibrations using NationalInstitute for Standards and Technology (NIST) recommended methods and NIST-traceable devices. The resulting dew pointmeasurement accuracy is 0.2°C.Power RequirementsThe LI-610 is powered by line voltage (108-126 or 216-252 VAC) using the 610-01 AC Module.The optional 6200B Rechargeable Battery provides approximately4 hours of continuous battery powered operation at 25°C ambientair temperature and 10°C dew point. The 6200B requires the LI-6020 Battery Charger for recharging.** A 12V battery can also be used.The LI-610 Portable Dew Point Generator is a rugged, portableinstrument that provides a stream of gas with a precisely controlleddew point. High accuracy and stability make the LI-610 an idealwater vapor source for field or laboratory use.Applications• Calibrating CO2/H2O analyzers. • Calibrating solid state relative humidity sensors.• Verifying calibration of dew point hygrometers.• Precise control of the water vapor mole fraction in environmentally regulated chambers.Water vapor is commonly measured in industrial processes byhumidity sensing instruments. Often, on-line sensors directly affectprocess control, efficiency, and product quality. The LI-610 pro-vides the capability to calibrate these sensors to ensure measure-ments with high accuracy and repeatability.LCD DisplayThe LI-610 has an easy-to-read 4 1/2-digit display with 0.01°C display resolution. Coarse and fine adjustment knobs allow dewpoint temperature to be set precisely. Actual dew point tempera-ture and battery voltage can also be displayed.Easy Flow AdjustmentsA valve on the front panel adjusts the flow rate through two gasexit ports (typically, combined total of 2.0 liters per minute).Rotameters monitor, adjust, or equalize the flow through each exit port.Voltage OutputA linear analog output allows a data acquisition system to measuredew point temperature. The LI-610's 0 to 50°C dew point range isscaled over a 0 to 5-volt output range (100 mV/°C).External ControlIn addition to front panel controls, dew point temperature can beset by connecting a linear 0 to 5-volt signal to the Command Inputconnector on the front panel. By using an input signal to controlthe LI-610, an automated calibration system can cycle through arange of dew points while calibrating humidity measurementinstruments. The LI-610 measures the input voltage and sets thedew point accordingly (100 mV/°C).Low MaintenanceRoutine maintenance consists only of changing the water in thecondenser block (weekly under normal operating conditions). PortabilityThe LI-610 is completely portable with the 6200B RechargeableBattery (optional), or any 12V battery. For laboratory use, it ispowered by line voltage using the 610-01 AC Module (standard).• Generates stable dew points from 0 to 50°C.• Accuracy of ± 0.2°C dew point.• Completely portable and self-contained (battery or AC operated).• No need for gas tanks and mixing systems.• Millivolt output of dew point temperature for data acquisition.• External control by a 0-5V input signal.Coarse and finedew point tem-perature adjust-ment knobsLCD displayRotametersfor settingflow ratesGas exit portsMillivolt outputand commandinput connectorsFlowadjustvalveGas inlet port610-01AC PowerModule(installed) Two-stage condenser withthermoelectriccoolerRadiator cooling fan (self-containedcooling system)OPERATIONFEATURESThe LI-610 providesan easy, accurate wayto calibrate relativehumidity sensors andto verify the calibra-tion of dew pointhygrometers.LI-610 Operational SchematicLI-610 with LI-6400 Sensor HeadAir is bubbled through water reservoirs in two nickel-plated con-densers to completely saturate the air stream with water vapor. The temperature of each condenser is precisely controlled to thedew point target by Peltier thermoelectric coolers. An internalradiator with a cooling fan dissipates heat from the coolers, pro-viding a completely self-contained cooling system.The water vapor stream exits the condensers via a port on the frontpanel (designed for 1/8" or 4 mm ID tubing) or can be split to asecond port. An internal pump provides typical flow rates of 0 to2.0 liters per minute.Instrument CalibrationsThe high accuracy and stability of the LI-610 make it an excellentinstrument to calibrate relative humidity sensors and to check thecalibration of dew point hygrometers. An equation is provided toconvert dew point temperature to relative humidity, assuming thattemperature is accurately measured. A chart is also provided forquick conversions in the field.The LI-610 can be used to calibrate CO2/H2O analyzers. An airstream from the LI-610 is directed through a desiccant to set theanalyzer's zero, and the second airstream is used to set the span.Continuous OperationThe LI-610 can provide a continuous air stream of known dewpoint to photosynthesis and stomatal conductance measurementchambers, or for other applications where a known supply of watervapor is required.Under typical operating conditions, the LI-610 can provide 4 to 8hours of continuous operation before the condenser needs to berefilled. CalibrationCondenser temperature is precisely measured by a PlatinumResistance Temperature Detector (RTD). Temperature calibrationaccuracy is assured through transfer calibrations using NationalInstitute for Standards and Technology (NIST) recommended methods and NIST-traceable devices. The resulting dew pointmeasurement accuracy is 0.2°C.Power RequirementsThe LI-610 is powered by line voltage (108-126 or 216-252 VAC) using the 610-01 AC Module.The optional 6200B Rechargeable Battery provides approximately4 hours of continuous battery powered operation at 25°C ambientair temperature and 10°C dew point. The 6200B requires the LI-6020 Battery Charger for recharging.** A 12V battery can also be used.The LI-610 Portable Dew Point Generator is a rugged, portableinstrument that provides a stream of gas with a precisely controlleddew point. High accuracy and stability make the LI-610 an idealwater vapor source for field or laboratory use.Applications• Calibrating CO2/H2O analyzers. • Calibrating solid state relative humidity sensors.• Verifying calibration of dew point hygrometers.• Precise control of the water vapor mole fraction in environmentally regulated chambers.Water vapor is commonly measured in industrial processes byhumidity sensing instruments. Often, on-line sensors directly affectprocess control, efficiency, and product quality. The LI-610 pro-vides the capability to calibrate these sensors to ensure measure-ments with high accuracy and repeatability.LCD DisplayThe LI-610 has an easy-to-read 4 1/2-digit display with 0.01°C display resolution. Coarse and fine adjustment knobs allow dewpoint temperature to be set precisely. Actual dew point tempera-ture and battery voltage can also be displayed.Easy Flow AdjustmentsA valve on the front panel adjusts the flow rate through two gasexit ports (typically, combined total of 2.0 liters per minute).Rotameters monitor, adjust, or equalize the flow through each exit port.Voltage OutputA linear analog output allows a data acquisition system to measuredew point temperature. The LI-610's 0 to 50°C dew point range isscaled over a 0 to 5-volt output range (100 mV/°C).External ControlIn addition to front panel controls, dew point temperature can beset by connecting a linear 0 to 5-volt signal to the Command Inputconnector on the front panel. By using an input signal to controlthe LI-610, an automated calibration system can cycle through arange of dew points while calibrating humidity measurementinstruments. The LI-610 measures the input voltage and sets thedew point accordingly (100 mV/°C).Low MaintenanceRoutine maintenance consists only of changing the water in thecondenser block (weekly under normal operating conditions). PortabilityThe LI-610 is completely portable with the 6200B RechargeableBattery (optional), or any 12V battery. For laboratory use, it ispowered by line voltage using the 610-01 AC Module (standard).• Generates stable dew points from 0 to 50°C.• Accuracy of ± 0.2°C dew point.• Completely portable and self-contained (battery or AC operated).• No need for gas tanks and mixing systems.• Millivolt output of dew point temperature for data acquisition.• External control by a 0-5V input signal.Coarse and finedew point tem-perature adjust-ment knobsLCD displayRotametersfor settingflow ratesGas exit portsMillivolt outputand commandinput connectorsFlowadjustvalveGas inlet port610-01AC PowerModule(installed) Two-stage condenser withthermoelectriccoolerRadiator cooling fan (self-containedcooling system)OPERATIONFEATURESThe LI-610 providesan easy, accurate wayto calibrate relativehumidity sensors andto verify the calibra-tion of dew pointhygrometers.LI-610 Operational SchematicLI-610 with LI-6400 Sensor HeadDew Point Range: 0 to 50°C (limited to 35°C below the cooling water temperature)Accuracy: ± 0.2°C (0–50°C)Stability: < 0.02°C per day at 25°C typical; < 0.04°C per day at 25°C maximumNoise Level: 0.01°C peak-to-peakRepeatability: ± 0.01°CResponse Time: Typically 15 seconds per °C when changing from ambient to a higher dew point; 30 seconds per °C for dew points lower than ambientTemperature Sensor: Platinum resistance temperature detector (RTD)FlowFlow Rate: Adjustable; typically 2.0 liters per minuteFlow Meter Type: Dwyer series RMA. 2.5 liters min-1 full scaleFlow Meter Accuracy: ± 4% of full scale readingFlow Outputs: Two rapid connect hose fittings for 4 mm ID by 6 mm OD plastic tubing. Accepts 1/4" OD tubing with 1/8 to 3/16" IDMaximum Input Flow: 2 liters min-1. Contact LI-COR about using higher input flow ratesAnalog Output: 0–5 Volts, 100 mV per °CCommand Input: 0–5 Volts, 100 mV per °CDisplay: 4 1/2 digit LCD for displaying dew point set temp (°C), actual dew point temp (°C), or battery voltageDisplay Resolution: 0.01°COperating Range: 0 to 50°C, 0 to 100% RH Weight: 7.86 kg (17.4 lb) Size: 23.5H × 21W × 28.5D cm (9 × 8.1 × 11") Ordering InformationLI-610 Portable Dew Point GeneratorIncludes 610-01 AC Module and 610-04 BNC to mV Recorder LeadsAccessories610-02 RH Calibration AccessoryFor calibrating humidity sensors in the LI-6200 and LI-1600610-04 BNC to mV Recorder Leads For mV input or output. One included with the LI-610; for both millivolt input and output, order a second 610-046200B Rechargeable Battery4 hour battery life at 25°C and 10°C dew pointLI-6020 Battery Charger92-138/184-276 VAC, 47-63 Hz Charges up to four 6200B batteriesLI-610 PortableDew Point Generator®A Precision Water Vapor Source For Field or Laboratory UseLI-610 PortableDew Point GeneratorSPECIFICATIONSDoc #980-066040103LI-610 with the LI-7500 CO2/H2O Open Path AnalyzerLI-COR is an ISO 9001 Registered Company.LI-610 with 6200BRechargeable Battery andLI-6020 Battery ChargerLI-610 with the LI-7000 CO2/H2OClosed Path Analyzer® 4421 Superior Street • P.O. Box 4425 • Lincoln, Nebraska 68504 USA North America: 800-447-3576 • International: 402-467-3576 FAX: 402-467-2819 • www.licor.com • envsales@licor.com