Tenmars ST-502 User Manual
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Tenmars ST-502 User Manual

Desktop indoor air quality (iaq) monitor
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Medidor portatil temperatura y humedad, CO2 tipo , USB
TN-ST502

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Summary of Contents for Tenmars ST-502

  • Page 1 Medidor portatil temperatura y humedad, CO2 tipo , USB TN-ST502...
  • Page 2 ST-502 Desktop Indoor Air Quality (IAQ) Monitor User’s Manual ST-502 Good Normal Poor Mode Enter HB2ST5020000...

  • Page 4: Table Of Contents

    CONTENTS     Introduction ..............1     Accessories ............... 1     Safety Precaution ............. 1     Meter Description ............. 2     Operation ..............3     Applications ............3     Concentration and Guidelines ....3  ...

  • Page 5: Introduction

    Introduction ST-502 is a desktop indoor air quality monitor that can measure carbon dioxide, relative humidity, air temperature, and ventilation rate. 2 Accessories 1 ST-502 Ammeter 1 User’s Manual 1 AC100~240V 12V/1A (5.5*2.1*1.0mm) switching transformer 1 5-pin USB cable 3 Safety Precaution Note! Please refer to this manual.

  • Page 6: Meter Description

    4 Meter Description ST-502 LCD Monitor Mode/Left button Datalogger button Enter button Right button concentration indicator; good concentration indicator; normal concentration indicator; poor Setting reset button 10. USB jack 11. External power input jack...

  • Page 7: Operation

    5 Operation 5.1 Applications  Building air conditioning system (HVAC) monitoring.  Indoor air quality monitoring. 5.2 CO Concentration and Guidelines  As indicated according to ASHRAE standard 62.1-2013 Appendix B Summery of Selected Air Quality Guidelines, carbon dioxide may cause risks to body health when the under very high concentrations (for example greater than 5,000PPM).

  • Page 8: Checking Measurement Modes

    5.3 Checking Measurement Modes  Press the button to view the following screens in this order:     L/P/S ventilationCFM/P ventilation minimum valuemaximum valuesave effective percentage℃. 5.4 Record Function  Press the button until “REC” appears on the LCD (2 seconds) to enter the automatic recording function.

  • Page 9: Function Setting

    5.6 Function Setting  Press and hold buttons simultaneously for 2 seconds to enter the function setting mode; use the buttons to select the content to set and then press to enter and set that item.  Press and hold buttons simultaneously for 2 seconds to exit the function setting mode.
  • Page 10  The hour digit will start flashing; press the button to increase and press the button to decrease.  Press the button and the minute digit will start flashing; press the button to increase and press the button to decrease. ...
  • Page 11 Step 4. CO2 alarm maximum value  Press the button to enter this setting item operation.  The first digit will start flashing at this time; press the button to increase and press button to decrease.  Press the button and the second digit will start flashing;...
  • Page 12 Step 5. CO2 alarm minimum value  Press the button to enter this setting item operation.  The first digit will start flashing at this time; press the button to increase and press button to decrease.  Press the button and the second digit will start flashing;...
  • Page 13 Step 6. Outdoor CO2  Press the button to enter this setting item operation.  The first digit will start flashing at this time; press the button to increase and press button to decrease.  Press the button and the second digit will start flashing;...

  • Page 14: Ventilation Formula

    Step 7. ABC Auto-correct function  Press the button to enter this item setting operation.  Press the button to select on/off.  Press the button to exit this item setting operation.  Once the ABC function is turned on, it uses 400ppm as the standard and will have adjusted approximately 30ppm over an accumulated time of 180 hours;...

  • Page 15: Software Installation

    Once the desktop program installation is complete,  remove the CD from the CD/DVD ROM drive. Connect this meter to the PC using the USB cable  included, as shown in the figure below: ST-502 Good Normal Poor Mode Enter...
  • Page 16 Execute the PC desktop software program:  double-click the left mouse button on the desktop program (Indoor Air Quality Data Logger.exe) to execute the desktop program.

  • Page 17: General Specifications

    7 General Specifications Read value display: Triple-display LCD  monitor Display unit: ℃/℉, PPM, %RH  Maximum value/Minimum value  Alarm function  Memory can store a maximum of 17,000 data  entries. Record time interval:  5 seconds/10 seconds/1 minute/5 minutes /10 minutes/30 minutes/1 hour/2 hours Operating power consumption: 2.4W ...

  • Page 18: Electrical Specifications

    8 Electrical Specifications Accurate ambient temperature range: 18℃ (64℉) ~ 28℃ (82℉)  Carbon dioxide Sensor Type Non-Dispersive InfraRed (NDIR) Measurement 0 to 9999ppm Range Accuracy ±5% read value or ±75ppm.(0-2000ppm) Resolution ±1ppm Response Reaches 90% in approximately Time 2 minutes ...

  • Page 19: Maintenance

    9 Maintenance Please read the user’s manual carefully to check whether there are any operating errors. Do not place the ammeter in locations that has high temperature, humidity or that are exposed to direct sunlight. 10 Cleaning Please turn off the power first before cleaning; use a soft and dry cloth to wipe it clean.
  • Page 21 TENMARS ELECTRONICS CO., LTD. 6F, NO.586 Ruiguang Rd, Neihu Dist. Taipei City, Taiwan E-mail: service@tenmars.com http://www.tenmars.com...

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