Tenmars TM-187A, TM-185A User Manual

HB2TM185A00

TM-185A Temperature

/ Humidity Monitor

TM-187A CO2 Monitor

User’s Manual

CONTENTS

1 Introduction ....................................................... 1

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

3 Safety ................................................................ 1

4 Meter description ............................................... 2

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

5.1 Device setting............................................. 4

5.2 Alarm setting: ............................................. 5

5.3 Hide/display testing screen ......................... 5

5.4 Clock setting .............................................. 6

5.5 Calibration of Adjustment ........................... 6

5.6 Current output ............................................ 7

5.7 Computer interface ..................................... 7

5.8 Automatic recording ................................... 8

5.9 CO2 self-calibration (ABC) ......................... 9

5.10 Alarm mode .............................................. 10

5.11 Buzzer and dry contact ............................. 11

5.12 Changing humidity / temperature sensor .. 12

5.13 Installation figure (Electrical connections) . 12

6 Software Installation ........................................ 13

7 General Specifications .................................... 14

8 Electrical Specifications ................................... 15

9 Maintenance ................................................... 16

10 Cleaning .......................................................... 16

11 Disposal .......................................................... 16

TM-185A TM-187A

1

Note! Please refer to this manual.
Improper use may damage the meter and
its components.

Complies with European Directive.

1 Introduction

The meters are wall-mounted monitors, suitable for monitoring
and recording environmental temperature, humidity and carbon
dioxide. It also has 4~20mA/RS-485/dry contact industrial
output, and is an indispensable instrument for improving
air quality.

2 Accessories

1 Meter
1 User’s Manual
1 AC to DC adaptor
1 Wall Mount
1 USB cable and Installation disk

3 Safety

 Do not operate in environments with flammable gas

or humid environments.

 Do not place the meter in locations with high

temperature, humid, or exposed to direct sunlight.

 Operating altitude: 2000 meters below sea level.
 Operation environment: Indoor use; contamination

level class 2.

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

 Class B – Equipment is suitable for use in

 Group 1 – RF energy generated is needed for

domestic establishments and
outside facilities.

internal functioning.

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2

4 Meter description

1.LED display screen

9. Dry contact

2.Device setting button

10.4-20mA output

3.Alarm setting button

11.RS-485 interface

4.Temperature unit
switching button

12. RS-232 interface

5. Switch display button

13. USB interface

6. Data lock button

14. Alarm signal output
(2KHZ)

7. Temperature / humidity
sensor

15. DC power input

8. AC power input

16. Standard VESA wall
mount hole
(100x100mm)

TM-185A TM-187A

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TM-185A TM-187A

3

Install the meter as shown below to obtain
the correct reading

5 Operation

1. The device can be used once the correct power is
connected.

2. Place it at a fixed location for approximately 30
minutes and wait for the test data to become stable.

3. Press the button to enter Device setting.(see 5.1)

4. Press the button to enter Alarm setting.(see 5.2)

5. Press the button to select Celsius ºC or
Fahrenheit ºF.

6. Press the button to select 12-hour mode, 24-hour
mode or humidity display.

7. Press the button to freeze the window and stop
updating.

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TM-185A TM-187A

4

5.1 Device setting

Press the button to enter Device setting; the setting

contents are as follows:

RTC time → Temperature ADJ(A ℃) → Humidity ADJ(A
rH) → Carbon dioxide ADJ (A CO2)→Current output

(4-20/℃/ Rh/ CO2)→ Computer interface (485/232)→
Automatic recording → Carbon dioxide self-calibration

(AbC)→ Return to testing mode.

Select Device setting
Select digit to set
& Increases and decreases the setting value
Confirm & exits setting

 Temperature ADJ range: ±10ºC/±18ºF
 Humidity ADJ range: ±10%RH
 Carbon dioxide ADJ range: ±200 PPM
 Automatic recording time: 1 second ~ 24 hours
 Current output: Temperature; humidity; carbon

dioxide, select one to output.

 Computer interface: USB; RS-232; RS-485, select

one to output

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