Tenmars ST-502 Bedienungsanleitung

Medidor portatil temperatura y humedad, CO2 tipo , USB

TN-ST502

ST-502

Desktop Indoor Air Quality (IAQ)

Monitor User’s Manual

Good Normal Poor

Mode Enter

REC

ST-502

HB2ST5020000

CONTENTS

1Introduction................................................................1

2Accessories...............................................................1

3Safety Precaution.....................................................1

4Meter Description .....................................................2

5Operation...................................................................3

5.1Applications.......................................................3

5.2CO2Concentration and Guidelines...............3

5.3Checking Measurement Modes.....................4

5.4Record Function ...............................................4

5.5Reset Settings...................................................4

5.6Function Setting................................................5

5.7Ventilation Formula........................................10

6Software Installation...............................................11

7General Specifications...........................................13

8Electrical Specifications.........................................14

9Maintenance............................................................15

10Cleaning...................................................................15

11End of Life Disposal...............................................15

1 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.

Improper usage may damage the

ammeter and its components.

Complies with European Directive

Do not operate in environments with flammable

gas or humid environments.

Operating altitude: 2000 meters below sea level.

Operating environment: Indoor use; contamination

level class 2.

Cleans wide with soft cloth when dirty, such as

glasses cloth. Do not clean with chemical and

other solvents.

EMC: EN61326-1:CISPR 11:Group 1, Class A

Class A –Equipment for use in all establishments

other than domestic

Group 1 –RF energy generated is needed for

internal functioning

4 Meter Description

ST-502

6345

1. LCD Monitor

2. Mode/Left button

3. Datalogger button

4. Enter button

5. Right button

6. CO2concentration indicator; good

7. CO2concentration indicator; normal

8. CO2concentration indicator; poor

9. Setting reset button

10. USB jack

11. External power input jack

5 Operation

5.1 Applications

Building air conditioning system (HVAC)

monitoring.

Indoor air quality monitoring.

5.2 CO2Concentration 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).

NIOSH recommendations:

250-350ppm – Concentration of normal outdoor

environment

600ppm – Minimum requirement for good air

quality.

600-1000ppm – CO2 concentration slightly high

1000ppm – Insufficient ventilation

These standards are guideline references only; if

the CO2 content exceeds 1,000ppm, it does not

necessarily mean that the building is dangerous and

needs to be evacuated. This standard is used as a

guideline to help increase the level of comfort to a

maximum.

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. The currently measured

value, setting function and USB connection can

be displayed during the recording process.

Press the “REC” button again until “REC” on

the LCD disappears (2 seconds) to exit the

automatic recording function.

5.5 Reset Settings

Before powering on, press and hold the

“RESET” button and then turn on the power to

restore all settings to the factory default values.

5.6 Function Setting

Press and hold +buttons

simultaneously for 2 seconds to enter the

function setting mode;

use the or 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.

Step 1. 12/24 hour mode

Press the button to enter this item

setting operation.

Press the button or button to

select between 12/24.

Press the button to exit this item setting

operation.

Step 2. Clock setting

Press the button to enter this item

setting operation.

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.

Press the button and the month digit will

start flashing; press the button to

increase and press the button to

decrease.

Press the button and the year digit will

start flashing; press the button to

increase and press the button to

decrease.

Press the button again to start setting

from the first digit again.

Press the button to exit this item setting

operation.

Step 3.Alarm switch

Press the button to enter this item

setting operation.

Press the or button to select

on/off.

Press the button to exit this item setting

operation.

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