Newport Hygrodynamics 8074A, Manual

Page 1: ...fic com P 301 498 6700 F 301 490 2313 email sales newport scientific com hygrotechnical newport scientific com Newport Scientific Inc 8246E Sandy Court Jessup MD 20785 9632 USA Portable Dew Point Moni...

Page 2: ...8074A_B docx October 2016...

Page 3: ...ower Connection 6 Dryer Performance Testing 6 Material Dryness Testing 7 Remote Monitoring Data Logging 9 Maintenance and Adjustments 10 Monitor Disassembly and Assembly 10 Sensor Replacement 11 Displ...

Page 4: ...ture 35 F to 90 F at 100 F air temp TYPICAL ACCURACY 3 F MAX PROCESS AIR TEMP 275 F ALARM SET POINT 50 F dew point adjustable SENSOR PART NUMBER 1826 2 ANALOG OUTPUT SCALING 40 F to 70 F 0 5V and 4 20...

Page 5: ...ndication of dew point on an LED display The sampling system allows dew point testing of process air at atmospheric pressure typically seen in bulk material drying food processing and environmental sy...

Page 6: ...es and Accessories The dew point monitor and its accessories are housed in a heavy duty portable carrying case When not in use all parts of the product are contained within the case protected from the...

Page 7: ...dew point is above the alarm set point SAMPLE TUBING Six feet of heat resistant tubing draws in process air to be measured AIR FILTER Installed in line with sample tubing removes fine particulates fr...

Page 8: ...mple tubing This can be a barbed hose fitting or a piece of copper tube that provides access to the process air The point of attachment must be secure and leak free The plastic sample tubing supplied...

Page 9: ...onnection to power Always connect the monitor to the correct supply voltage Do not attempt to replace the line cord with a different plug type to accommodate other supply voltages The 8074A will be da...

Page 10: ...ble beeper will indicate dryer trouble within moments of a dew point rise A constantly high reading on the 8074A may indicate a malfunctioning dryer or one that is overloaded by damp material in the h...

Page 11: ...w point reading will start to drop Material processing can begin when the dew point reading is at an acceptable level If the 8074A reading is stuck at a high dew point change the sampling point to the...

Page 12: ...d of time The output jack is a 3 pin male M8 type connector This connector accepts standard threaded or snap fit female M8 cables Pin No Wire Color Signal 1 Brown 4 20mA current sourcing 3 Blue Ground...

Page 13: ...fore disassembly Even with the power switch off voltages are present inside the unit Slide the sample tubing off of the front panel elbow Use a screwdriver to remove the 5 screws along the perimeter o...

Page 14: ...g and air filter whenever the sensor is replaced With the panel removed from the case locate the sensor housing and pull the individual sensor wires from the 4 pin insert The wires will unplug straigh...

Page 15: ...e insert this is normal Carefully replace the sensor gasket and insert back into the housing and reconnect each wire as shown Note the location of the notch on the insert and use that as a reference p...

Page 16: ...d Move J6 and J7 jumpers to the C position to display dew point in C Alarm Set Point Adjust To change the dew point at which the monitor indicates an alarm high dew point indication refer to the DISPL...

Page 17: ...ers OFF In this configuration the front panel display will indicate the current alarm set point Adjust the SET1 potentiometer to the desired set point When the front panel display indicates your desir...

Page 18: ...or or internal air leaks NOTE Make sure the desiccant is blue in color If the desiccant is fully pink it will not produce dry air and you should purchase a new desiccant tube before testing Remove the...

Page 19: ...ion Damp sample tubing or sensor housing If high dew point air was recently sampled there may be condensation in the tubing and fittings Perform the Dry Down test to purge the system of moisture Senso...

Page 20: ...at the wires are in the correct order refer to Sensor Replacement section Sensor or circuit board damaged Disassemble the monitor and locate the white and green sensor wires on the terminal block term...

Page 21: ...um pump may be worn or damaged or the 4 pin insert holding the sensor may be cracked and leaking Monitor should be serviced Sensor worn or contaminated Most often a slow response if caused by an aged...

Page 22: ...2017 Spare Parts Accessories Item Part No Sensor 1826 2 Air filter 3305005 High temp sample tubing per ft 4100133 4 pin insert 0900104 Gasket for insert 1000613G Desiccant tube 6245 Field wireable ana...

Page 23: ...cial indirect consequential damages arising out of this warranty or any breach thereof of any defect in or failure or malfunction of the equipment and materials are further subject to tolerances and v...

Page 24: ...newport scientific com P 301 498 6700 F 301 490 2313 email sales newport scientific com hygrotechnical newport scientific com Newport Scientific Inc 8246E Sandy Court Jessup MD 20785 9632 USA...