Tsi IAQ50 Manual de usuario Pagina 1

Indoor Air Quality Meter Model IAQ50 OWNER’S MANUAL

10 sequence, press and hold the ENTER key at any point of the start-up sequence, until the meter beeps. Using the Sensing Probe The sensing probe re

11 ON/OFF Key Press the ON/OFF key to turn the in-strument on and off. When the instru-ment is first turned on, it goes through a preprogrammed power-

12 rameter, press the CO2 key. Then, place the probe in the location you want to measure gas concentration. TEMP Key The meter will always display t

13 HUMID Key Press HUMID to toggle between %RH, dew point or wet bulb, (as displayed on the top line of the display). Dew point and wet bulb are displ

14 TIME LOG Key To set up the instrument so it automati-cally takes measurements, use the TIME LOG key. This allows you to program a logging time and

15 sen, the instrument will sample continu-ously until it is either stopped manually, runs out of memory, or the batteries run out. If a number betwee

16 NEXT TEST Key Press NEXT TEST to advance to the next test ID. If the current test ID does not have anything stored, it will not advance to the next

17 Using CO2: %OA= (CR–CS) / (CR–CO) x 100% where %OA = Percentage of outside air CR = Concentration CO2 of return air CS = Concentration CO2 o

18 IMPORTANT: Temperature readings should be taken at the Air Handling Unit only, since there may be components in the system that change the temperat

19 Details on the procedure are as follows: Press the %OA key once to begin. To choose a measurement mode (OA, SUPPLY, RETURN), use the 5 or 6 keys.

ii LIMITATION OF WARRANTY AND LIABILITY Seller warrants the goods sold hereunder, under normal use and service as described in the operator's man

20 If the measurement is not acceptable or the value is not yet stable, wait a minute and then take another reading to over-write the value on the top

21 Note: “Err” will display if not enough information is available or a negative % value is calculated. To make changes to one of the other three re

22 to change the value. Press ENTER to return to normal measuring mode. RECALL Key The RECALL key lets you review data from a particular test ID.

23 ments, press the desired measurement button. For example, if you wish to see humidity measurements, press HUMID. Press HUMID again to see dew point

24 them. Use the 5 or 6 key to adjust the value, and press ENTER to accept. DEL Key The Model IAQ50 lets you clear the last sample stored or the ent

25 Printing Data Using the Optional MicroPrinter If the optional MicroPrinter is connected, what is viewed on-screen will be on the paper printout. N

26 printer, please refer to the operation and service manual for the printer to properly set the printer’s DIP switch settings. If the printer prints

27 Cases If the instrument case or storage case needs cleaning, wipe it off with a soft cloth. Never submerge the Model IAQ50 in any liquid. Storage W

28 calibration, Return Material Authorization (RMA) number, and shipping instructions. Please have the following information available when you call:

29 especially important in applications where strict calibration records must be main-tained. Send the instrument to TSI Instruments Ltd. prepaid. Sec

3 Table of Contents LIMITATION OF WARRANTY AND LIABILITY... ii SECTION 1 General Desc

30 3. Turn the IAQ50 on. It will flash “CAL” on the top row and beep intermit-tently. 4. Press and hold the CO2 key to begin the calibration procedu

31 the display indicates “SPAN” and the span concentration. 9. Install the regulator on the span calibration cylinder and connect tub-ing from the re

32 Temperature and Humidity Calibrations Adjustment Procedure The temperature adjustment can add or subtract a number of degrees. The range is ±9.99ºF

33 it. When finished, turn the instrument off and flip DIP switch #7 to “off.” On the Model IAQ50, press and hold the TEMP or HUMIDITY key to enter t

34 SECTION 7 Troubleshooting Table 7-1 lists the symptoms, possible causes, and recommended solutions for common problems encountered with the Model I

35 Symptom Possible Causes Corrective Action Display reads "LO" Wrong AC adapter Replace with the correct AC adapter. Low AC line voltage

36 Symptom Possible Causes Corrective Action Display reads “LOG FULL” You are trying to enter more readings than memory can handle Read or record the

37 Table 8-1: DIP Switch Settings Switch OFF ON 1-3 Must be OFF ------- 4 Not assigned ------- 5 °F °C 6 Buzzer OFF Buzzer ON 7 Normal Mode C

38 Specifications Specifications are subject to change without notice. CO2 Range: 0 to 5000 ppm Accuracy:1 ±3% of reading at 25oC or ± 50 ppm, which

39 Wet Bulb: Range: 5 to 60°C Resolution: 0.1°C % Outside Air: Range: 0 to 100% Resolution: 0.1% Logging Capability: Up to 14,000 measure-ments in

4 SECTION 5 Maintenance... 26 Probe Tip...

TSI Instruments Ltd. October 2005 Lancaster Road Printed in USA Cressex Business Park Part No. 1980533, Rev. A High Wycombe

5 SECTION 1 General Description The Model IAQ50 measures Carbon Dioxide (CO2) level, temperature and relative humidity, and calculates dew point and w

6 SECTION 2 Safety When using the IAQ50 to check for CO2, temperature or humidity values, make certain that you can safely raise and hold the instrume

7 SECTION 3 Setting-Up Supplying Power to the Model IAQ50 The Model IAQ50 can be powered in one of two ways: four AA-size batteries or an optional A

8 Start up Sequence for the Model IAQ50 When the instrument is turned on, all segments of the display will light up and then the meter goes through a

9 and time stamping of recorded data will not be correct. To set the time and date, press and hold either 5 or 6 key during the power-up sequence wh