DOTECH GTX220 Series User manual

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GTX220 series
CO2 Transmitter
User Manual
DOTECH Inc. 6F, JOONGANG-ILBO B/D, 30, Dongsan-ro, Danwon-gu, Ansan-si, Gyeonggi-do, KOREA
Tel. : [phone] | Fax. : [phone] | www.dotech21.com
· NDIR, CO2, Temp., Humidity measurement
· 268 * 128 mono graphic LCD
· Wall mount or Desktop stand (Use only bracket)
· Horizontal or vertical type display
· 1-CH PhotoMOS relay output
· 2-CH 4-20mA or 1~5V analog output
· RS485 modbus RTU output
· Wi-Fi ( Modbus TCP Protocol)
· Industrial HVAC & BMS system
· IAQ(Indoor Air Quality)
· Gas leak detection
· Agricultural
· Instrumentation
· Transportation
Features Applications

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Cautions for safety
Please read cautions for safety carefully before use the product.
Cautions for safety shall be observed because such cautions are to use the product safely and correctly in order to prevent
accident or danger in advance.
- When this product is used for controlling of device which may affect life or property (such as controlling of nuclear power,
medical instrument, vehicle, railroad, aviation, burner, entertainment device or safety device), double safety devices must be
installed before use.
- This product is not explosion proof and should not be used in combustible gas environments or explosion proof areas.
- Do not connect lines or check or repair when power is applied.
- For power connection, verify the terminal number before connection.
- Do not modify product by unauthorized person other than our service technician.
- Do not use this product at outdoor. Product life time may be shortened.
- In wire connection, tighten the terminal screw with sufficient torque.
- Use this product within its rated/performance range. Product life time may be shortened.
- Do not use a load that exceeds the rated switching capacity of the relay contacts.
It may cause insulation failure, contact melting and contact failure.
- Do not use water or organic solvents for cleaning. Use a dry, dry towel.
- Do not use in locations with flammable, explosive gas, direct sunlight, radiant heat, vibration or shock.
- Do not inflow dust or wire dregs into the unit.
- When connecting the sensor, check the polarity of the terminal and connect the wires correctly.
Warranty Information
The warranty statement for the purchaser of the product or license.
Warranty Terms and Conditions Restrictions
Warranty Terms
The warranty period for the product is one year, within which you can receive support for problems with the product itself.
The company shall not be responsible for product damage caused by the following cases:.
- When used without considering the installation instructions and digital input / output rating specified in the product manual.
- When the product has an abnormality caused by external human factors or environmental factors in which
the product is installed.
If a product problem is raised by the original purchaser within the warranty period, we will diagnose the product problem in the buyer's area or
send the product to us for confirmation and support repair and replacement service. If the purchased product exceeds the warranty period or the
product problem is not covered by the support conditions, the original purchaser shall bear the related costs for repair / replacement and delivery.
The original purchaser for any claims, warranties, torts [including negligence and gross negligence] —in any case, with legal requirements
and claims—with or without contract—unless the stated limitations on the fulfillment of the warranty terms do not violate current application
law. Samsung shall not be liable for any consequential damages or losses arising from special, indirect, incidental, legal, or organizational
arrangements for purchased products, including business disruption, loss of use, and revenue problems.
Except for the customer's requirement for non-compliance of warranty terms, we shall not be liable for any claims claimed by the original
purchaser, its associates, agents, or contractors for any loss, damage, or expense incurred or incurred from the sale.
The above warranty conditions are the exclusive rights of the original purchaser. In addition to the warranty terms, the Company rejects the
performance of any other warranty conditions, expressed or implied, including, but not limited to, modification of the product for a particular
purpose, implied warranty conditions on the sale of the product, and warranty conditions without legal infringement.
The fulfillment of warranty conditions does not exactly follow the instructions for the operation and maintenance of the product, and does not
apply to product problems caused by replacement, accident, misuse, abuse, or carelessness. Technical assistance provided by personnel and
agents in the buyer's system design is a suggestion and not a recommendation. The buyer is responsible for determining the implementation of
the proposal and should be tested by the buyer. It is the buyer's responsibility to determine the suitability of the product for its purpose and its
use.
The terms and conditions set forth in the warranty terms apply in effect and the dealer, company or individual or employee has no right to
amend, modify or extend the terms of the warranty for any reason.

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: Technical data
CO2
Measurement NDIR
CO2 Measurment range 400~10,000ppm
Accuracy ±(30ppm+3%MV) @400~10,000ppm
Repeatability ±10ppm @400~10,000ppm
Response time (t63) 20sec
Environment
Operating Temperature 0~50℃ (Non condenced)
Operating Humidity 0~95%RH
Storage Temperature -20 ... +70 ℃
Mechanics
Housing PC Plastic
Connection M12 8Pin
Relative Humidity
Measurement range 0 ... 100%RH
Humidity Accuracy ±2.0%RH (0 ... 80%RH)
Repeatability ±0.2%RH
Hysterisis < ±1%RH
Humidity resolution 0.01%RH
Response time, t63 < 8sec
Long term drift < 0.25%RH/year
Temperature
Temperature measuring range -10 ... +60℃
Temperature accuracy ±0.3℃ (-10 ... 60℃)
Repeatability ±0.2℃
Temperature resolution 0.015℃
Response time, t63 >2sec
Long term drift < 0.05℃/year
Inputs and Outputs
Power supply 12-24Vdc, ripple(p-p) not exceeding 10%
Permissible voltage
fluctuation range 90% to 110% of power supply
Current consumption Max 200mA @24Vdc
Display 268 * 128 mono graphic LCD
Control output
Output Type : PhotoMOS relay
Load voltage : Below the AC/DC 24V
Load current : Below the 300mA
Analog Output
(Voltage)
Output Voltage : 1-5Vdc ±2.5% F.S.
Linearity : Below the ±1% F.S.
Resolving power : 1/2,000
Output impedance : About 200Ω
Response time : 50ms
Analog Output
(Current)
Output Current : 4-20mA ±2.5% F.S.
Linearity : Below the ±1% F.S.
Resolving power : 1/2,000
Output impedance : About 100kΩ
Response time : 50ms
Communication
output RS485 modbus RTU

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: Installation
: Components
: Odering Guide
GTX220 - ① ② - ③ ④ Description
① Display
H with LCD diplay and key - Horizontal type
V with LCD diplay and key - Vertical type
② Wi-Fi option
W Wi-Fi option and RS485
Nil Not Used (use RS485)
③ Cable Type
83 M12 8Pin 3m
85 M12 8Pin 5m
④ Bracket
W Wall-mount suspension bracket
D Desktop stand bracket
□ Dimensions
141.7
46
51.1
Ø16 80.4
147
192.6
Bracket Adaptor Assembly
Wall Mount Suspension Bracket
Desktop stand bracket
Bracket Adaptor Assembly
Wi-Fi Setting terminal
Temp., Humidity sensor
Wall Mount
Air inlet
Connector
Wall Mount Suspension Bracket
or
Body Cable M12 Desktop stand bracket

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<Horizontal installation>
1. Fix to the wall
the Wall Mount Suspension Bracket
2. And then connect the product at
the Wall Mount Suspension Bracket
Roof
Wall
Wall Wall
Wall
Wall
H-Type
H-Type V-Type
<verticality installation> V-Type
□ Wall Installation
□ Desktop stand Type
□ Wiring
※ Use the Desktop stand bracket and place it on a flat surface like a table.
2Brown
Blue
White
Green
Red TRX+
Power IN: 24Vdc
Pin
1
1
2
3
4
5 6
7
8
2
3
4
5
6
7
8
A OUT 1+
+ VDC
A OUT 2+
TRX-
RY1_COM
RY1_NO
GND
TRX+
White
Brown
Green
Yellow
Grey
Pink
Blue
Red
Assignment Cable color
Load: 24Vdc, max 0.3A
M12, 8Pin
(A code)
+
-
TRX-
Yellow
Gray
Pink
7
1
3
8
4
5
6
mA
mA

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CO2
982 27.05
57.74
PPM Temp
Humi %
℃
MAX:3694 MIN:647
Contrast!
CO2
982 27.05
57.74
PPM Temp
Humi %
℃
MAX:3694 MIN:647
DATE/TIME
TUE 2020-08-08 09:50:52
CO2
982 27.05
57.74
PPM Temp
Humi %
℃
MAX:3694 MIN:647
**PRODUCT INFORMATION**
MODEL GTX220
:
S/W Ver v1.0(r200706)
:
ORDER MANUFACTURER
:
MAKER DOTECH INC.
:
CO2
982 27.05
57.74
PPM Temp
Humi %
℃
MAX:3694 MIN:647
PASSWORD
0000
CONFIGURATION
SENSOR SETTING
ALARM SETTING
OUTPUT TEST
100
DEVICE SETTING
: Configuration
□ Configuration
Name Description
Button
PRG Enter the program
UP UP and Increase Value
DOWN Down and decrease Value
SEL
Select and Save,
CO2 MIN /MAX Initialization
(Press for 2 seconds while on the
measurement screen.)
Name Description
LED
Wi-Fi light on when connected
to a wireless router.
OUT 1 light on when output ON
PWR light on when power is
applied
TRX + Flashes when
transmitting RS485
communications
TRX -
Press the UP/DOWN Button
hold at the same time.
Press the PRG button twice.
Check firmware version
Press the PRG button
three times.
□ Display Contrast setting
□ Date setting
□ Check firmware version
: Parameters
□ Parameter setting
UP / DOWN : Enter password UP / DOWN : Menu
SEL : Select
PRG : Previous
Press the PRG Button
one time
Press the SEL Button
one time
UP / DOWN :
Contrast setting
SEL : Save
SEL :
Press and hold to
enter setup mode
UP / DOWN : Setting
SEL : Save

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Address Menu Data Description Unit Step Min. Max. Default
30001 Firmware version INT16 - - 0.1 - - -
30002 YEAR INT16 Year - 1 - - -
30003 MONTH INT16 Month - - - - -
30004 DATE INT16 Date - 1 1 255 -
30005 WEEKDAY INT16
0 : Mon
- 1 0 6 -
1 : Tue
2 : Wed
3 : Thu
4 : Fri
5 : Sat
6 : Sun
30006 HOURS INT16 Hour -1 0 23 -
30007 MINUTES INT16 Min. -1 0 59 -
30008 SECONDS INT16 Sec. -1 0 59 -
30010 Alarm
(SET : 1, RESET : 0) INT16
BIT0 : the lower temp. limit
- 1 0 6 -
BIT1 : the upper temp. limit
BIT2 : the lower humidity limit
BIT3 : the upper humidity limit
BIT4 : the lower CO2 limit
BIT5 : the upper CO2 limit
30011 Measured value(temp.) INT16 Display real-time
measurement temp.( x100 )
℃0.01 -10.00 60.00 ℃
℉ 14.00 140.00
30012 Measured value
(humidity) INT16 Display real-time measurement humidity( x100 ) %RH 0.01 0.00 100.00
30013 Measured value( CO2 ) INT16 CO2 PPM 1 0 9999
30014 Sensor error INT16
0 : non error
- 1 0 3 -
1 : temp. or humidity error
2 : CO2 error
3 : temp. or humidity or CO2 error
□ Parameter Table
Setting
Address Menu Data Description Unit Step Min. Max. Default
40004 Language INT16 0 : English - Toggle 0 1 0
1 : Korean
40005 PASSWORD INT16 Setting mode password - 1 0 9999 0
40006 Button sound INT16 0 : OFF - Toggle 0 1 1
1 : ON
40007 Alarm sound INT16 0 : OFF - Toggle 0 1 1
1 : ON
40008 Comunication ID INT16 MODBUS ID - 1 1 32 1
40009 Communication parity INT16
0 : 4800
BPS 1 0 5 5
1 : 9600
2 : 19200
3 : 38400
4 : 57600
5 : 115200
40010 Communication parity bit INT16
0 : NONE
- 1 0 2 0 1 : EVEN
2 : ODD
40012 LCD light INT16 LCD setting( 1: ON, 0: OFF ) - Toggle 0 1 1

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Sensor setting
Address Menu Data Description Unit Step Min. Max. Default
40018 Temp. Unit INT16 Temp. Unit setting
( 0: Celsius, 1: Fahrenheit )
℃Toggle 0 1 0
℉
40019 Temp. Offset INT16 Temp. Offset( x100 ) ℃0.01 -10.00 10.00 0.00
℉
40020 Humidity Offset INT16 Humidity Offset( x100 ) %RH 0.01 -10.00 10.00 0.00
40021 CO2 INT16 CO2 Offset PPM 1 -100 1 1
40022 Sensor Measurement
Cycle INT16 MODBUS Temp. Humidity, CO2 sensor Measurement Cycle ID Sec. 1 2 60 2
Alarm Setting
Address Menu Data Description Unit Step Min. Max. Default
40034 Select relay output
source INT16
0 : non
- 1 0 6 6
1 : temp. lower limit
2 : temp. upper limit
3 : humidity lower limit
4 :humidity upper limit
5 : CO2 lower limit
6 : CO2 upper limit
40035 Temp. alarm lower limit INT16 Alarm below set value( x100 ) ℃0.1 -10.00 60.00 -5.00
℉ 14.00 140.00 23.00
40036 Temp. alarm upper limit INT16 Alarm above set value( x100 ) ℃0.1 -10.00 60.00 -5.00
℉ 14.00 140.00 122.00
40037 Humidity alarm
lower limit INT16 Alarm below set value( x100 ) %RH 0.1 0 99.90 5.00
40038 Humidity alarm
upper limit INT16 Alarm above set value( x100 ) %RH 0.1 0 99.90 90.00
40039 CO2 alarm lower limit INT16 Alarm below set value PPM 1 0 10000 200
40040 CO2 alarm upper limit INT16 Alarm above set value PPM 1 0 10000 5000
40041 Alarm Delay Time INT16 - Sec. 1 0 60 3
40042 Turn off alarm INT16 0 : Auto - Toggle 0 1 0
1 : Manual
Output
Address Menu Data Description Unit Step Min. Max. Default
40026 Select Analog Output
( CH1 ) INT16 0 : current( 4~20mA ) - Toggle 0 1 0
1 : Voltage( 1~5V )
40027 Select Analog Output
( CH2 ) INT16 0 : urrent( 4~20mA ) - Toggle 0 1 0
1 : Voltage( 1~5V )
40028
Select Analog
Output Source
( CH1 )
INT16
0 : non
- Toggle 0 3 3
1 : temp.
2 :
3 : CO2
40029 Analog Output Lower
Limit( CH1 ) INT16 Analog ouput range setting
( sensor measurement range ) - 1 - - -
40030 Analog Output Upper
Limit( CH1 ) INT16
40031
Select Analog
Output Source
( CH2 )
INT16
0 : non
- Toggle 0 3 1
1 : temp.
2 : humidity
3 : CO2
40032 Analog Output Lower
Limit( CH2 ) INT16
- 1 - - -
40033 Analog Output Upper
Limit( CH2 ) INT16