User Manual CFM/CMM Hot-Wire - Cole
Contents
1. 1 unit AREA nm Fig 2 058 Fig 3 6 Press the MEAN button to change the station of flashing digit Press UNIT A or UNIT V button to change that flashing digit from 0 to 9 7 Continue until all four numbers have been changed Then press ENTER button to store the new setting into memory Auto Power Off Mode The meter s default mode is to automatically shut off after 20 minutes of non use To disable the auto power off mode enter the Setup mode 1 While in Setup mode press UNIT A or UNIT to e p scroll to the SLP screen refer to Fig 4 Press ENTER to display On 2 Press UNIT A or UNIT Y button until your desired setting appears on the display Press ENTER to store the new setting into memory The Auto power off icon will appear in the upper right hand corner indicating that the auto power off mode is activated Fig 4 Software Installation e Insert the CD into a PC e Double click the setup exe file to launch the software installation program e Follow the installation wizard to complete the installation e If the USB driver needs to be updated please go to the folder driver on the CD and double click the file CP210xVCPlnstaller exe to update the driver Setup and Operation Connecting the Vane 1 The vane plug is inserted in the meter s sensor jack at the top of the meter The plug and jack are keyed so that the plug can only fit in the jack one2. the Temperature reading Press the FLOW TEMP button to toggle between viewing the Temperature reading and the Airflow reading Press SETUP button to turn on the backlight press again to turn off Fig 5 z Fig 7 LL Airflow Probe handle Fig 8 Taking an Averaged Measurement Over Multiple Points 1 Press MEAN button quickly and the MEAN icon will appear at the bottom of screen In this mode the upper display shows the value of the most recent data point captured and the lower display shows the real time probe measurement Press ENTER button to take a data point The captured data value is shown on the upper display while the lower display continues to show the real time probe measurement A data point is captured whenever the ENTER button is pressed To stop data collection and calculate the mean value press MEAN button The MEAN icon flashes at the bottom of screen and the lower display will indicate the calculated average value of the data taken To return to measurement mode press MEAN button 5 To toggle between the parameters displayed temperature flow velocity and calculated volumetric flow rate press the FLOW TEMP button To change the units of the reading displayed press UNIT Y button Taking an Average Measurement Over Elapsed Time 1 Press MEAN button for 2 seconds The MEAN icon w
3. way 2 Turn the plug carefully until it lines up with the jack and then firmly push the plug in place Do not apply undue force or try to twist the plug side to side 5 T a ee Taking Single Point Measurements 1 Press the On Off button to turn the meter on and allow 5 seconds for the thermal sensor to warm up Setting the meter to zero a On the probe s head slide the sensor cover to the up position to isolate the air velocity sensor from the environment refer to Fig 5 b Press HOLD ZERO button until the reading value of air velocity shows zero Slide the sensor cover to the down position to let the air velocity sensor come in contact with the air refer to Fig 6 Extend the telescoping probe to your desired length up to 41 104 cm refer to Fig 7 Select the desired air velocity units and temperature units Press the UNIT A button to scroll through the air velocity units of measure Press the UNIT Y button to select either C or F for temperature units Press the FLOW TEMP button to bring up the airflow display then press UNIT VY button to select either CFM or CMM for airflow units Place the probe head in the air stream There are two white arrows on each side of the probe head refer to Fig 8 These arrows should point in the same direction as the airflow View the readings on the LCD The upper display shows the Air Velocity reading The lower display shows
4. AX and Mean modes Changing a Setup Option 1 Press the SETUP button for 3 seconds to enter or exit Setup mode When the meter is in Setup mode the display shows SETUP refer to Fig 1 2 Press UNIT A or UNIT Y button to scroll to the setup option you want to change 3 Press ENTER button to indicate that you want to change this setting 4 Press UNIT A or UNIT YF button until the setting you want to use appears on the display 5 Press ENTER button to store the new setting into memory Change the Area Unit of Measure Setting 1 While in Setup mode press UNIT A or UNIT V button to scroll to the area unit screen refer to Fig 2 2 Press ENTER button The string AREA and area unit of measure will be shown on the screen 3 Press UNIT A or UNIT button to scroll to your desired unit of measure in2 m2 or ft2 4 Press ENTER to store the new setting into memory Change the Flow Area Setting 1 While in Setup mode press UNIT A or UNIT V button to scroll to the AREA unit screen refer to Fig 2 2 Press ENTER button to bring up the area value screen refer to Fig 3 3 Press ENTER button again and the area numbers flash 4 Press UNIT A or UNIT YF button to select the place ment of the decimal point 5 Press ENTER button and the flashing digit will indicate the number ready to be changed Press UNIT A or UNIT VY button to change the flashing digit from 0 to 9 unit n Fig
5. User Manual Dd DIGI SENSE CFM CMM Hot Wire Thermoanemometer with NIST Traceable Calibration Model 20250 16 A VEL SETUP HOLD mm ss ia X100 m s ft min km h MPH knots FLOW VEL TEMP AREA Imit Hage REC MAX MIN Mean ce THE STANDARD IN PRECISION MEASUREMENT Introduction The Digi Sense CFM CMM Hot Wire Thermoanemometer Model 20250 16 provides precision air velocity airflow and temperature measurements The large easy to read backlit LCD includes primary and secondary readings plus numerous status indicators The instrument is fully tested and calibrated to NIST traceable standards Careful use of this meter will provide years of reliable service n kin Check individual parts against the list of items below If anything is missing or damaged please contact your instrument supplier immediately 1 oO ON DO A UDN Meter Anemometer telescoping hot wire probe USB cable Software CD Hard carrying case AC DC power adapter One 9 V battery User manual NIST traceable calibration report with data Features e Thermal anemometer is capable of very low air velocity measurements e Slim telescoping hot wire probe is ideal for grilles and diffusers e Combination of hot wire and standard thermistor sensors delivers rapid
6. and precise measurements e Records Max and Min readings with a recall function e Microprocessor circuit ensures maximum possible accuracy provides special functions and features e Super large LCD with dual function allows air velocity and temperature to be shown at the same time e Data Hold function e Applications environmental testing air conveyors flow hoods clean rooms air velocity air balancing fans motors blowers furnace exhaust paint spray booths Display Elements N N OORA W Low battery indicator Primary Display air velocity 10 The multiplier of secondary display value recording data or time 11 Flow units Air velocity units calculation mode Indicates Mean value mode is active Indicates Mean value mode is active 12 Temperature units Secondary display units 13 Flow area units Secondary display data 14 The multiplier of primary display Record MAX MIN display Indicates multi point mean value 15 Indicates Auto power off is active input 16 Elapsed time 17 Indicates Data Hold mode is active over time 18 Indicates entering or exiting setup mode X100 14 m s ft min km h MPH knots FLOW VEL TEMP AREA In mitt 13 X100 10 REC MAX MIN Mean Setup Options Use the SETUP button to change area unit flow area and sleep mode settings The meter will store the newer settings in its memory Note Setup mode is disabled in MIN M
7. ill appear at the bottom of screen Press ENTER button to begin timing a measurement The elapsed time mmiss is shown in the upper display while the current reading is shown in the lower display Press ENTER button again to stop the timing cycle Press ENTER button again to resume the timing cycle To end the measurement and calculate the average value press MEAN button The MEAN icon will flash and the calculated average value is shown in the lower display 5 To return to the measurement mode press the MEAN button 6 To toggle between the parameters displayed temperature flow velocity and calculated volumetric flow rate press the FLOW TEMP button To change the units of the reading displayed press UNIT VY button Holding the Displayed Readings 1 Press HOLD ZERO button to freeze the readings on the display The HOLD icon will appear at top of screen indicating that the meter is in Hold mode and the measurement will remain unchanged To toggle between the parameters displayed flow or temperature press the FLOW TEMP button Press HOLD ZERO button again to turn off the Hold mode 5 T oa T N Viewing the MAX and MIN Readings 1 Press MAX MIN button to enter the Max Min mode The REC MAX icon will appear at bottom of screen 2 Press MAX MIN button again to toggle between the maximum displayed val ues REC MAX icon and the minimum displayed values REC MIN icon 3 To toggle bet
8. t the probe 2 Remove the meter s battery cover 3 Replace the 9 V battery 4 Close the battery compartment cover It is recommended that Digi Sense products are calibrated annually to ensure proper function and accurate measurements however your quality system or regulatory body may require more frequent calibrations To schedule your recalibration please contact InnoCal an ISO 17025 calibration laboratory accredited by A2LA INNOCA L INNOVATIVE CALIBRATION SOLUTIONS Phone 1 866 INNOCAL 1 866 466 6225 Fax 1 847 327 2993 E mail sales innocalsolutions com Web InnoCalSolutions com For Product and Ordering Information Contact 7 Cole DAVIS lt Cole Parmer TED Delivering Solutions You Trust Proven Precise Personal Toll Free 1 800 323 4340 Toll Free 1 800 358 5525 Phone 1 847 549 7600 Phone 1 847 327 2000 Fax 1 847 247 2929 Fax 1 847 327 2700 ColeParmer com Digi Sense Davis com Digi Sense 1065DGMAN_20250 16 Rev 1 Manual Part No 00100 55
9. ween the parameters displayed flow or temperature press the FLOW TEMP button 4 Press MAX MIN button and hold for 2 seconds to exit Max Min mode Specificati Air velocity Range Resolution Accuracy m s meters per sec 0 1 to 25 0 m s 0 01 m s 5 1 digit ft min feet per min 20 to 4925 ft min 1 ft min reading or 1 1 digit km h kilometers per hour 0 3 to 90 0 km h 0 1 km h Fall ecale MPH miles per hour 0 2 to 55 8 MPH 0 1 MPH whichever is knots nautical MPH 0 2 to 48 5 knots 0 1 knots greater Airflow Range Resolution Area CFM cubic feet per min 0 to 99 999 ft min 0 001 to 100 CMM cubic meters per min 0 to 99 999 m min 0 001 to 100 f Range Resolution Accuracy Air temperature 32 to 122 F 0 to 50 C 0 1 F C 1 8 F 1 C CFM ft min Air velocity ft min x Area ft CMM m min Air velocity m s x Area m x 60 Display Memory Sampling Operating temperature Operating humidity Weight Dimensions Power supply Power current 17 x 23 4 7 x 6 cm LCD dual function Max and Min with recall Approximately every 0 8 second 32 to 122 F 0 to 50 C lt 80 RH noncondensing 10 oz 280 g 8 x 3 x 2 21 x 7 5 x 5 cm 9 V battery or 100 to 240 V 50 60 Hz Approximately 60 to 90 mA DC Mai Recalibrati Repai Battery Replacement When low battery icon appears on LCD the 9 V battery must be replaced 1 Disconnec
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