CaTeC - EE371 / EE372 - Dew Point Transmitters for Compressed Air Drying Processes Datasheet

1The exact monitoring of dew point temperature in compressed air systems, dryers for plastic and other indu-strial processes is becoming increasingly more important.EE371 series with a measuring range -80...60°C Td (-112...140°F Td) is the ideal solution for such applications.The core of the transmitter is the monolithic measurement cell type HMC01, developed by E+E Elektronik in thin-film technology.An autocalibration procedure which is integrated in the device and years of experience in low humidity adjustment make an accuracy of <2°C Td (±3.6°F Td) possible. The compact construction in a robust aluminium housing and the numerous options allow easy mounting and many application possibilities.EE371EE371 Series Compact Dew Point Temperature Transmitter / Switch Dew point temperatures in the range of -60...-20°C (-76...-4°F) at room temperature correspond to relative humidity values of 0.08...5.37% RH. The measurement of these low humidity values is not possible with conventional capacitive measurement methods. For the EE371 series a special autocalibration procedure is utilized to achieve high accuracy measurements at lowest dew points too.AutocalibrationOutputsModel T: The transmitter has two freely selectable and scaleable outputs for dew point, frost point or ppm volume concentration. Model S: The switch with two relay outputs is designed for control and alarm purposes. The status for early warning and main alarm is indicated by LED's. Adjustment of the Td/Tf set point and hysteresis can be achieved with the optional configuration software.Configuration SoftwareThe optional configuration software allows flexible and easy adjustment of the analogue resp. relay outputsto the respective requirements.The adjustment / calibration of the transmitters can easily be performed.Screw Connection for Mounting - 360° positionableThe construction of this screw connection enables any position / rotation of the mounted transmitter. So an optimal position of the display resp. the cable outlet is guaranteed.monitoring of compressed air systemsrefrigerant type dryerabsorption dryerplastics dryerTypical Applications Featuresmeasuring range -80...60°C Td (-112...140°F Td)accuracy of measurement ±2°C Td (±3.6°F Td)two Td/Tf alarm outputsautocalibrationpressure tight up to 100 bar (1450psi)V1.1EE371????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????2Dimensions (mm) Connection DiagramMeasuring Quantities Dew point (Td) Dew point sensor HMC01 Measuring range -80...60°C Td (-112...140°F Td) Accuracy Traceable to intern. standards, administrated by NIST, PTB, BEV... Response time t90 80 sec. -20°C Td ? -40°C Td (-4°F Td ? -40°F Td) 10 sec. -40°C Td ? -20°C Td (-40°F Td ? -4°F Td) Volume concentration Measuring range 20...200,000ppm Accuracy at 20°C (68°F) and 1013mbar 5ppm + 9% of readingOutputs EE371-Tx two freely selectable and scaleable 0 - 1V / 0 - 5V / 0 - 10V1) -1mA < IL < 1mA analogue outputs for Td, Tf, Wv 4 - 20mA / 0 - 20mA RL < 500 Ohm1) EE371-Sx Alarm output 2 potential-free relays (NC) 30V DC 0.6A / 35V AC 0.3A (resistive)GeneralSupply voltage 10...30V DC Current consumption at 24V DC voltage output: typ. 40mA / during autocalibration: 100mA current output: typ. 80mA / during autocalibration: 140mAPressure range 0...20bar (0...290psi) / 0...100bar (0...1450psi) System requirements for software WINDOWS 2000 or later; serial interface Serial interface for configuration RS232C Housing / protection class Al Si 9 Cu 3 / IP65Electrical connection 7-pole industrial plug: DIN VDE 0627 / IEC 61984 cable cross-section: 0.25 - 1 mm2 cable connection: PG 11Sensor protection stainless steel sintered filterWorking temperature range probe: -40...70°C (-40...158°F) electronic: -40...60°C (-40...140°F) with LC display: -20...50°C (-4...122°F) Storage temperature range -40...60°C (-40...140°F)Electromagnetic compatibility according to EN 61326-1 EN61326-2-3 ICES-003 ClassB Industrial Environment FCC Part15 ClassB1) minimum supply voltage 15V DCTechnical Data806040200-20-40-60-800 10 20 30 40 50 60-10-20-30-40dew point temperature (°C)process temperature (°C)Accuracy = ±2°C Td (= ± 3.6°F)limit of measuring range61 V+2 GND3 GND4 OUT15 OUT26 NC7 NCVmAVmA10...30V DC1 V+2 GND3 NC114 NC125 NC216 NC227 not connected10...30V DC7 12354analogue output relay output28 (1.1”) 100 (4”)48 (1.9”)75 (3”)40 (1.6”)24 (1”)32 (1.3”)54 (2.1”)Ø12 (0.5”)spanner width: 27 or 24G1/2” ISO or 1/2” NPTEE3713Ordering GuideAccessoriesOrder ExampleEE371-TEHA07D08/CD2-Td03Model: transmitter Output 1: TdPressure range: up to 20bar (290psi) Output 2: Tf Pressure tight feedthrough: 1/2” NPT thread Output signal: 0-5VDisplay: with display Measured value unit: metric Scaling of output: -10...50°C - sampling cell with quick connector (HA050102) - stainless steel sintered filter (HA010103) - basic sampling cell (HA050103) - display (D08) - configuration software + interface cable (HA010604)Hardware ConfigurationModel transmitter T switch SPressure range up to 20bar (290psi) E E up to 100bar (1450psi) I IPressure tight G1/2" male thread HA03 HA03feedthrough 1/2” NPT thread HA07 HA07 Display without display with display D08 D08Software ConfigurationPhysical parameters dew point temperature Td [°C/°F] (C) output/relay 1of the outputs/relays frost point temperature Tf [°C/°F] (D) output/relay 2 volume concentration Wv [ppm] (P)Type of output signals 0-1V 1 0-5V 2 0-10V 3 0-20mA 5 4-20mA 6Measured value units metric / SI for T / Td / Tf non metric / US E01 E01Scaling of Td/Tf-output -40...60 (Td/Tf02) -80...20 (Td/Tf63) Other Td/Tf-scaling (in °C or °F) -10...50 (Td/Tf03) -60...20 (Td/Tf65) refer to page 146 ppm range Wv 0...100ppm (X01) 0...500ppm (X02) other measuring range: ______ 0...1000ppm (X03) Setting of alarm standardoutput other set points: relay 1: ______ relay 2: ______ SP hysteresis 1: ______ hysteresis 2: ______select according to Ordering Guide (C, D, P)select according to Ordering Guide (Tdxx / Tfxx)select according to Ordering Guide (C, D, P)select according to Ordering Guide EE371Basic Sampling CellThe basic sampling cell offers the possibility to integrate the EE371 into an existing or self-constructed sampling system.1 = G 1/2“ ISO2 = G 1/4“3 = G 1/4“Sampling Cell with Quick Connector up to 10 bar (145psi)The sampling cell is specially developed for use in compressed air lines and has a quick-connector suitable for standard compressed air connections. It allows for the cell to be fitted and removed without interrupting the process.The flow of gas can be adjusted using a bleed screw. 1 = G 1/2“ ISO2 = Bleed screw3 = Quick connector112233 EE371- EE371-