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TSI Incorporated 8550 Operation And Service Manual

Q-trak iaq monitor
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I n d o o r A i r Q u a l i t y
Model 8550/8551
TM
Q-T
IAQ Monitor
RAK
Operation and Service Manual
1980197, Revision K
October 2002

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Summary of Contents for TSI Incorporated 8550

  • Page 1 I n d o o r A i r Q u a l i t y Model 8550/8551 IAQ Monitor Operation and Service Manual 1980197, Revision K October 2002...
  • Page 3 Model 8550/8551 IAQ Monitor ™ Operation and Service Manual October 2002 P/N 1980197, Rev. K SHIP/MAIL TO: E-mail address: TSI Incorporated answers@tsi.com 500 Cardigan Road Web site: Shoreview, MN 55126-3996 http://www.tsi.com INTERNATIONAL U.S. Sales & Customer Service: Sales & Customer Service:...
  • Page 4 Copyright © TSI Incorporated / October 1997–2002 / All rights reserved. Address TSI Incorporated / 500 Cardigan Road / Shoreview, MN 55126 / USA Fax No. (651) 490-3824 Limitation of Warranty and Liability Seller warrants the goods sold hereunder, under normal use and service as described in the...

  • Page 5: Table Of Contents

    CONTENTS 1. UNPACKING AND PARTS IDENTIFICATION ......1 Unpacking the Q-T ..............1 Parts Identification for the Q-T ..........2 2. SETTING-UP................. 3 Supplying Power to the Q-T ............ 3 Installing the Batteries............. 3 Using the AC Adapter ............. 3 Instrument Setup ................
  • Page 6 Things You Should Know About Taking Pre-Programmed Samples ................... 19 Memory Considerations............... 20 4. CALIBRATION AND MAINTENANCE ........21 Calibrating the CO Concentration Measurement ....... 21 Calibrating the Temperature or Relative Humidity Measurement ................23 Calibrating the CO Concentration Measurement (Model 8551 only)..............

  • Page 7: Unpacking And Parts Identification

    IAQ Monitor from the shipping container. Use the tables and illustrations below to make certain that there are no missing components. Contact TSI immediately if anything is missing or damaged. Packing List for the Model 8550/8551 Q-T IAQ Monitor Quantity Item Description...

  • Page 8: Parts Identification For The Q-Trak

    Parts Identification for the Q-T Figures 1–1 and 1–2 identify the parts of the Q-T IAQ Monitor. Please become familiar with these components before proceeding. Model 8550 Model 8551 Figure 1–1: Q-T 1. Display 7. Location of Humidity Sensor 2. Keypad 8.

  • Page 9: Setting-Up

    Chapter 2 Setting-Up Supplying Power to the Q-T The Q-T IAQ Monitor must be powered in one of two ways: four size AA batteries or the supplied AC Adapter. Installing the Batteries Insert four size AA batteries as indicated by the diagram located on the inside of the battery compartment.

  • Page 10: Set-Up The Communications Port

    1. Locate an available serial port on your computer: COM1, COM2, COM3, or COM4. 2. If the port has a 25-pin connector, you do not need the adapter. If the port has a 9-pin connector, plug the 25-pin end of the adapter into the RS-232 cable.

  • Page 11: Setting The Real-Time Clock

    5. As an alternate, you may select Find Port, to have T search the available COM ports, looking for an attached Q-T RAK. 6. Select OK to accept the setup or Cancel to discard the changes. Note: Some computers do not communicate reliably at baud rates above 9600.

  • Page 12: Manually Setting The Real-Time Clock

    Manually Setting the Real-Time Clock To set the time and date with the keypad, you must press and hold the SAMPLE key down while the Q-T displays the time of day during its power-up sequence. Release when the Q-T “beeps.” You will have an opportunity to view and/or change the hours, minutes, year, month and day of month in sequence.

  • Page 13: Operation

    Chapter 3 Operation Overview The Model 8550 and Model 8551 Q-T IAQ monitors measure CO temperature, and relative humidity. In addition the Model 8551 also measures CO concentration. All parameters are measured simultaneously in a single probe. The Q-T has four modes of operation, Survey, LOG 1, LOG 2, and LOG 3.

  • Page 14: Co 2 Key

    will run considerably less than 60 minutes before displaying the message “LO” and turning off. CO 2 SAMPLE CALIBRATE ZERO RECORDING CO 2 SAMPLE HR:MN:SEC TEST ID LOG ELAPSED TIME CONSTANT °F°C AVERAGE MIN MAX mg/m SERVICE % MEMORY Figure 3–1: Q-T Display With All Elements Shown After displaying the percentage of battery life remaining, the current time set on the internal real-time clock is displayed.

  • Page 15: Humidity Key

    HUMIDITY Key Press the HUMIDITY key to display humidity readings. The humidity sensor is located near the tip of the probe. The readings will be in units of percent relative humidity (%rh). C a u t i o n The humidity sensor is sensitive to the effects of water. Do not expose the sensor to liquid water.

  • Page 16: Programming The Available Time Constants

    Programming the Available Time Constants To program the list of time constants using Q-T Data Analysis Software: 1. Make sure the Q-T is connected to the computer and turned on. 2. Select Parameters, then Time Constants from the Instrument Setup menu.

  • Page 17: Print Key

    measured simultaneously. The display shows only the data for the current measurement mode. The measurement mode may be changed at any time to view statistics for the other measurements. PRINT Key Use the PRINT key to print information on the optional Model 8925 Portable Printer.

  • Page 18: Log Modes

    until samples are taken in one of the LOG modes. Turning the Q-T off will not erase data. Use the SAMPLE key to start and stop a sample. LOG Modes: There are three LOG modes: LOG 1, LOG 2, and LOG 3. When one of these modes is selected using the SAMPLING MODE key, the LOG mode number is listed at the top of the display.

  • Page 19: Programming The Logging Intervals Using Trakpro

    key will not respond unless the Q-T is first put into one of the three logging modes. Press the LOGGING INTERVAL key momentarily to view the current logging interval. Press and hold the LOGGING INTERVAL key to sequence through the available choices and release the key when the desired interval is on the display (LOG 1 mode only).

  • Page 20: And " Keys

    The Q-T is reprogrammed to offer the logging intervals you have specified. ! and " Keys The two arrow keys are used to adjust readings when calibrating the and for adjusting the time and date for the internal real-time clock. Display/Keypad Lockout Switch Recording data over extended time periods often requires leaving the unattended.
  • Page 21 The following table summarizes the information displayed in the Advanced Logging Modes dialog box: Displays the serial number of the logging Serial Number instrument. Displays the number of tests currently logged Number of tests logged and stored in the logging instrument. Available Displays the percent of available memory in the logging instrument.
  • Page 22 LOG 2 and LOG 3 Mode Protocols Channels Displays the channels selected for sampling in LOG 2 and LOG 3 modes. Start Date Displays the start date for LOG 2 and LOG 3 modes. Start Time Displays the start time for LOG 2 and LOG 3 modes.
  • Page 23 3. Enter the following for LOG 2 and LOG 3 modes: Select the channels for which you want to log Channels data. In the case of the Q-T , there are four channels to select: CO , Temp, rh, and CO. Start Date Enter the date and time to begin the sample: Start Time...

  • Page 24: Sample Protocol For Log 2 And Log 3 Modes

    4. When you have finished defining the parameters for LOG 2 and LOG 3 modes, select Send. 5. You can now disconnect the Q-T and cable from the computer. Sample Protocol for LOG 2 and LOG 3 Modes The following steps describe how to program a sample protocol for LOG 2 or LOG 3 mode.

  • Page 25: Things You Should Know About Taking Pre-Programmed Samples

    2. Select Logging Setup from the Instrument Setup menu. T retrieves the current settings for LOG 2 and LOG 3 modes from the and displays them in the previous dialog. 3. Enter the following for LOG 2 and LOG 3: Setting LOG 2 LOG 3...

  • Page 26: Memory Considerations

    This should be considered when selecting a logging interval. Shorter logging intervals use memory more quickly than longer intervals. A recorded data set consumes 6 bytes for Model 8550 and 8 bytes for Model 8551 (2 each for CO , CO, temperature and humidity.) In addition,...

  • Page 27: Calibration And Maintenance

    Chapter 4 Calibration and Maintenance The Q-T requires very little maintenance to keep it performing well. The Q-T may be calibrated in the field using the instructions below. Even so, we recommend that you return your Q-T to TSI for calibration annually.
  • Page 28 1. Locate the calibration collar and slide it over the sensing probe. Make sure that the collar completely covers the CO diffusion holes. Refer to Figure 4–1. Figure 4–1: CO Calibration 2. Install the regulator onto the zero calibration gas cylinder and connect tubing from the cylinder to the fitting marked “GAS IN”...

  • Page 29: Calibrating The Temperature Or Relative Humidity Measurement

    5. Install the regulator onto the span calibration gas cylinder and attach a tube from cylinder to the fitting marked “GAS IN.” Make sure the cylinder is not empty, then turn the gas on (0.3 L/min). A CO concentration of between 1000 and 5000 ppm should be used. 6.

  • Page 30: Calibrating The Co Concentration Measurement (Model 8551 Only)

    Note: DIP switch 3 or 4 must be set to the “User Calibration” (ON) position or the Q-T will not go into calibration mode. Please refer to Appendix B: “Internal DIP Switch Settings.” 3. Compare the reading on the Q-T with the reading from the reference device.
  • Page 31 The calibration procedure can be aborted at any time by pressing the CO, , TEMP, or HUMIDITY key. If an error occurs during the CO calibration procedure, the Q-T will display the message “ERR.” Press the CO, CO , TEMP, or HUMIDITY key to abort the calibration.

  • Page 32: Replacing The Co Sensor

    5. Install the regulator onto the span calibration gas cylinder and attach a tube from cylinder to the inlet fitting of the calibration adapter. Make sure the cylinder is not empty, then turn the gas on. 6. Use the arrow (!") keys on the Q-T keypad to adjust the display to match the known span gas concentration.

  • Page 33: Storage Precautions

    5. Line up notch on sensor with connector and gently push sensor onto the connector. 6. While holding flex circuit against CO sensor, carefully thread thermistor through cap and screw cap on probe. 7. Turn on Q-T . A one-time, 30-minute stabilization period is needed only after sensor replacement.
  • Page 34 Chapter 4...

  • Page 35: Troubleshooting

    Chapter 5 Troubleshooting The table below list the symptoms, possible causes and recommended solutions for common problems encountered with the Q-T Symptom Possible Cause Corrective Action No Display. Unit not switched on. Switch unit on. Low or dead batteries. Replace the batteries or plug in the AC adapter.
  • Page 36 Symptom Possible Cause Corrective Action No keypad Display/Lockout switch Slide lockout switch to normal response. in lockout position. position. “ERR” A mistake has been made Press CO , TEMP or Displayed such as switching the zero HUMIDITY key to abort during and span gases.

  • Page 37: Appendix A: Specifications

    Appendix A Specifications Specifications are subject to change without notice. Specifications in parentheses () indicates English equivalents. Sensor type:......Non-Dispersive Infrared (NDIR) Range:........0-5000 ppm Accuracy: ......... ±3% of reading ±50 ppm at 25°C (77°F). [Add uncertainty of ±0.36% per °C (±0.2% of reading per °F) for change in temperature.] Resolution: .......
  • Page 38 External dimensions:....107 mm x 183 mm x 38 mm (4.2 in x 7.2 in x 1.5 in) Probe length:......Model 8551: 17.8 cm (7.0 in) Model 8550: 14.7 cm (5.8 in) Probe diameter:......1.9 cm (0.75 in) Weight: ........0.59 kg (1.3 pounds) (with batteries) Display:........
  • Page 39 Calibration Gas zero: ......... Nitrogen or pure air (<10 ppm CO span:......... 1000–5000 ppm CO CO zero:........Pure air (<0.5 ppm CO) CO span: ........35–500 ppm CO Gas flow rate:......0.3 to 0.5 L/min Specifications...
  • Page 40 Appendix A...

  • Page 41: Appendix B: Internal Dip Switch Settings

    Appendix B Internal DIP Switch Settings To access the DIP switches, remove the batteries from the battery compartment. On the inside of the battery compartment, there is a window with eight DIP switches The table below shows the functions for each switch.
  • Page 42 DIP SWITCH Figure B–1: DIP Switch Location Appendix B...
  • Page 43 TSI Incorporated 500 Cardigan Road, Shoreview, MN 55126 U.S.A. Web: www.tsi.com...

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