GasDog 41547 User manual
Product Overview
GD300 concentration in different kinds of situations or pipelines 24h
continuously wall mounted type gas detector. Using world first
brand sensors, and advanced micro-process technology, with data
display, fast response, high preci-sion and good stability. Powered by
24V DC, with 4-20mA, RS485, relay signal output. Explosion proof,
suitable for different kinds of situations.
GD300
Online Fixed Gas Detector
GD300
online fixed gas detector
1
GD300
online fixed gas detector
Employing overseas original sensor.
tandard equipped with three-wire system 4-20mA analog output;
relay output; RS485 output (optional)
Unique infrared ray control function, which can non-contacted control the
device. Being compatible with all kinds of controlled alarms, PLC, DCS and
other control system, can be remote monitored.
Alarm mode: Sound and light, alarm value is settable(Optional)
Explosion-proof design, fast, reliable and stable.
Explosion-proof grade: II 2G Ex db IIC T6 Gb IP65
With self-calibration function and three standard keys will be used
to realize on-site maintenance.
Monitor the specific gas concentration in environment or pipeline
and alarm.
With self-calibration and zero calibration function,
makes the detection more accurate and reliable.
With temperature compensation, this is able to realize gas
concentration compensation under conditions of different temperatures.
Infrared ray controller can remote control alarm point settings,
zero calibration, and address modification.
Can output one or two on-off signals, can drive ventilator or
solenoid valve and other external devices.
Working Voltage：12-36V DC
Case：die-cast aluminum
Product advantages
Features
Application
Petrochemical & Chemcial Industry Municipal Engineering & Utilities Agricultral & Environmental Protection
Electronic Food & Pharmaceutical Industry Other Industries
Product Advantages
2
Gas Measure range Optional
Normal gas types and paramaters （Other gases are not listed can be customized）
Resolution Response time
GD300 online fixed gas detector
Gas Detected
Detection Principle
Install Method
Measure Range
Resolution
Precision
Output signal
Response Time
Repeatability
Zero shift
Connection mode
Temperature
Explosion-Proof
Power
Dimensions
Recovery Time
Linearity error
Relay output
Thread Size
Humidity
Degree of protection
Operating time
Weight
Flammable gas（EX）
Oxygen（O2）
Carbon monoxide（CO）
Hydrogen sulfide（H2S）
Methane（CH4）
Ammonia（NH3）
Chlorine（CL2）
Hydrogen Chloride（HCL）
Hydrogen （H2）
Nitric oxide（NO）
Nitrogen dioxide（NO2）
Nitrous Oxides（NOX）
formaldehyde（CH2O）
Ozone（O3）
Carbon dioxide（CO2）
sulfur dioxide（SO2）
Ethylene oxide（ETO）
Phosphine（PH3）
Hydrogen cyanide（HCN）
Nitrogen（N2）
Hydrogen fluoride（HF）
0-100%LEL
0-30%VOL
0-1000ppm
0-100ppm
0-4%VOL
0-100ppm
0-10ppm
0-20ppm
0-1000ppm
0-100ppm
0-20ppm
0-100ppm
0-10ppm
0-10ppm
0-2000ppm
0-20ppm
0-100ppm
0-10ppm
0-10ppm
0-100%VOL
0-10ppm
0-100%VOL
0-25%VOL
0-2000ppm
0-1000ppm
0-100%VOL
0-200ppm
0-100ppm
0-100ppm
0-40000ppm
0-250ppm
0-100ppm
0-2000ppm
0-100ppm
0-1000ppm
0-50000ppm
0-5000ppm
0-1000ppm
0-5000ppm
0-100ppm
0-90%VOL
0-50ppm
1%LEL/0.1%VOL
0.01%VOL/0.1%
VOL 0.1ppm/1ppm
0.01ppm/0.1ppm
0.01%VOL
0.01ppm/0.1ppm
0.01ppm/0.1ppm
0.01ppm/0.1ppm
0.1ppm/1ppm
0.01ppm/0.1ppm
0.01ppm/0.1ppm
0.01ppm/1ppm
0.01ppm/0.1ppm
0.01ppm/0.1ppm
0.1ppm/1ppm
0.01ppm/1ppm
0.01ppm/1ppm
0.01ppm/1ppm
0.01ppm
0.01%VOL
0.01ppm
≤10S
≤10S
≤10S
≤10S
≤10S
≤10S
≤10S
≤10S
≤10S
≤10S
≤10S
≤10S
≤10S
≤10S
≤10S
≤10S
≤10S
≤10S
≤10S
≤10S
≤10S
O2, N2, CO2, EX, VOC, PH3, etc. According to customers' requirements.
Electrochemistry, infrared ray, catalytic combustion, PID photo ionization (according to the target gas and sensor).
Wall-mounted, piping type, flow-type(according to the detected environment)
The range is optional, according to the target gas and the sensor.
According to sensor and measure range
According to sensor.
4-20mA, 0-5V, RS485, relay（optional）
≤5S
≤±1%
≤±1%（F.S/year）
G1/2 external thread explosion-proof flexible pipe
-20℃～50℃
II 2G Ex db IIC T6 Gb IP65
12-36V DC
180×150×90mm
≤10S
≤±1%
220V AC 3A (optional)
M45*2mm
0-95%RH
IP65
24h
≤1.6kg
Technical Specification
3
GD300
Used in steel mills, repair
shops,etc.
GD300
Used in warehouse, freezer,
etc.
GD300
Applied in power plant,
hazardous chemicals plant,
etc.
GD300
Application in sewage
treatment, refuse treatment
station, etc.
More Application
Furniture, Floor, Wallpaper, Coating, Gardening, Interior Decoration and Renovation, Dyestuff, Papermaking,
Pharmacy, Health Care, Foodstuff, Antiseptic.
Disinfection, Chemical Fertilizer, Resin, Adhesive, Pesticide, Raw Material, Sample, Technological Process,
Livestock Farm, Refuse Processing Plant, Perm Place.
Bio-pharmaceutical Plant, Green Household, Livestock Breeding, Green House Cultivating, Warehouse
Logistics, Brewing And Fermentation, Agricultural Production.
Project Cases
4
Matters need attention
A. Please read this instruction manual before using the detector.
B. The detector must be used in compliance with the designated procedures of our company. C. The warranty period of this transmitter
is 12months (starts from the date userget the detector).
Users should comply with the instructionsin the use of this detector. Any damages or malfunctions caused by improperoperation of users are
not within the scope of warranty.
D. Repairand replacement of any parts must be operated by trained staff under authorization of our company, using original spare part.
The operatoris responsible for the liability if users operate the repair of replacement by themselves.
E. There is acid solution inside the transmitter, please do not disassembleit. And pay attention not to damage the frontal membrane of
the transmitter. If the skin is stained with the acid solution. the right remedy is to flushing the stained skin continuously with clean water for
1 0minutes.
F. The detector must be calibrated for once each year. The explosion proof sheet parts of the transmitter need to be cleaned
regularly (blow with low pressure compressedair), otherwise the detection sensitivity will be affected by the dust and impurities clogging
protection hole.
Notice to Reader
Please read this instruction manual before using the detector
online fixed gas detector
GD300:XX
Instruction Manual
5
1.Power supply, signal line
2.Printed-circuit board
3.Terminal
4.Sound and tight alarm port
5.Air chamber of sensor
6.Sensor port
7.Main board connection
Ground
connection port
5
6
123
4
7
NC:Normally close
NO:Normally open
COM:Common
24V:24+,positive
GND:24-,negative
4~20mA:4~20mA analog signal
Low Alarm High Alarm
Relay Relay
Powered
Signal output
Motherboard connector Alarm
DDiiggiittaal pl prroobbe pe poorrtt
Port Instruction
6
1. Key Technical Indicator
Repeatability: <2%
Zero drift: < ± 2% (F•S) /6M
Operating temperature: -20~+50℃
Environment temperature: <90%RH
Working principle of the transmitter: electrochemical for oxygen and hazardous gases, catalytic
combustion for combustible gases
Lifespan of transmitter: 3years for combustible gas transmitter; 2years for hazardous gas transmitter
2. Other Technical Parameters
Inspection mode: diffusion
Working mode: fixed long-term continuous work Working voltage:
12-30V DC
Working current: oxygen and hazardous gas <50mA (Max)
combustible gas <150mA (Max)
Technical performance and parameters
Target gas Accuracy
O2<±2%(F.S)
H2S <±2%(F.S)
CO <±2%(F.S)
H2<±2%(F.S)
CO2<±2%(F.S)
C2H4<±2%(F.S)
NO2<±2%(F.S)
N2<±2%(F.S)
TVOC <±2%(F.S)
NH3<±2%(F.S)
ASH3<±2%(F.S)
C3H3N <±2%(F.S)
F2<±2%(F.S)
O3<±2%(F.S)
CL2<±2%(F.S)
BF3
Range
0-30%VOL
0-1000ppm
0-1000ppm
0-20000ppm
0-10000ppm
0-100ppm
0-20.0ppm
0-100%VOL
0-6000ppm
0-100ppm
0-10.00ppm
0-200.0ppm
0-10 ppm
0-5.00ppm
0-10.00ppm
0-10.00ppm <±2%(F.S)
least count
0.01%VOL
1ppm 1ppm
1ppm 1ppm
0.01ppm
0.1ppm
0.01%VOL
1ppm
0.01ppm
0.01ppm
0.1ppm
0.01ppm
0.01ppm
0.01ppm
0.01ppm
response time
≤15
≤15
≤25
≤15
≤40
≤60
≤25
≤40
≤60
≤40
≤30
≤40
≤25
≤50
≤60
≤60
l
Output signal: three-wire 4-20 mA standard signal output or RS485 signa output Exterior
structure: die-casting aluminum housing
Dimensions: 135 x 125 x 116mm (without mounting bracket)
167 x 145 x 126mm (with bracket)
Weight: without mounting brackets 1.2kg with brackets 1.6kg with stent
7
Connection cable (6 core cable) is defined as
follows: 4-20mA with RS485:
Red: positive-input of power (12 to 24V)/ 24V+ Black:
ground wire of power/24V
Yellow:4-20mA output.
Orange: RS485A
Blue: RS485B
Brown: Free
Connection distance: >1000m
Protection grade: IP65
Installation type: on wall
Type of explosion-proof: flame proof Explosion-proof
grade: Ex d IIC T6 Gb
Inlet port: hexagonal locknut
Settings of Remote Control
The remote control applied to all product type produced by Yuante.
1. Press "MENU" once to enter F01, address code setting menu. Press "OK" to modify, press"+""-
"to modify address code of the detector. Press "OK" to save settings and "BACK" to cancel.
2. Press "MENU", then press “+”to enter F02, minimum value setting menu of gas alarm, Press
"OK" to modify, press"+" "-"to modify the value. Press "OK" to save settings and "BACK" to cancel.
3. Continue to press "+"to enter F03, maximum value setting menu of gas alarm., Press "OK" to
modify, press"+" "-"to modify the value. Press "OK" to save settings and "BACK" to cancel. Same operation with
F04 (zero point calibration), F05 (range calibration), F06 (AD value).
4. Press "MENU" four times to enter a shift status, under this status:
Press "RESET" once, the data would be 255, one more it would be 0. Just press "RESET" to shift. When the
data is 0, press "+"or"-"to modify alarm point, the data difference would be only 1. When the data is 255, press
"+"or"-"to modify alarm point, the data difference would be 1000. "RESET" can also be used as mute button
when it is alarming.
MENU
RESET
OK
+
BACK
-
MENU button, from the measurement state into the functional state alarm
reset to eliminate alarm function
confirm button
plus
return
minus
Remote controller function
8
Function
introduction Controller
function introduction
F-01 Address, Range1-200
F-02 Low point alarm
F-03 High point alarm
F-04 Zero calibration
F-05 4mA offset correction
F-06 ADC check
F-07 Standard gas concentration
F-08 Calibration switch
F-09 Production date
F-10 Reserved function
F-11 Serial communication check. 0 no check, 1 odd check, 2 even check F-12
Arrangement mode of the floating-point data
0:DCBA
1:ABCD
2:CDAB
Need to press OK to save after all the above parameters are modified, which can take effect
immediately, power outage restart also valid.
Installation Instruction
1. Location Selection
The location selection of the gas detection transmitter is essential to achieve the best detection results. In
the selection of location, we need to consider the following factors: the density of gas in a leaking point,
proportion of target gas, the impact of surrounding buildings, condition of production equipment, wind direction
and annual meteorological conditions and even the location of windows and doors in an indoor environment.
We provide the following suggestions for your reference:
A. Maintain a proper distance between the detector and the possible gas leaking point. It would react too
fast or too frequent if the distance is not enough, which may paralyze people's mind.
B. The detector must be located in the downwind of the possible leaking point.
C. If installed indoor, but the source of the leak is outdoor, the detector must be installed at the air inlet.
D. Determine the height according to proportion of target gas in air.
E. Determine the quantity of detectors according to the condition of possible leaking point, frequency
of staff attendance and time of stay as well as the economic effect.
F. Consider to increase quantity of inspection point if the equipment is old.
G. Protect the detector from radiation of high temperature heart source. Environments of both
very high temperature and very low temperature will affect the result and lifespan of the detector.
9
118.00
φ8.00
140.00
φ8.00 φ8.00
102.30
206.00
89.00
2. Steps of Installation
Connect wire to correspondent terminals. Don't work with power on. The arrangement of terminals
differs according to the type of transmitter. The definition of different wires:
Red: positive-input of power (12 to 24V)/24V+ Black:
ground wire of power/24V
Yellow:4-20mA output.
Orange: RS485A
Blue: RS485B
Brown: Free
Fix the detector on the wall with expansion bolt, make sure the transmitter is downward, or the detector
cannot work property. Users can also separate the bracket and transmitter according to the condition on
spot, fix the bracket before connection.
For the sake of safety and interference reduction, please connect the housing with reliable ground wire.
For the wire between the transmitter and the main engine, the shorter, the better. And protect the wire with
iron pipe.
Method of Calibration
To guarantee the measurement accuracy of the transmitter, regular calibration and maintaining
rigorous record is necessary.
Devices needed for calibration: a bottle of sample gas used for range calibration (60%F.S standard gas in
normal site),relief valve, flow meter of 0~1000ml/min, transparent and smooth conduit for gas, standard gas
housing, digital multimeter, stopwatch and etc.
Note: The value of transmitter WB (4mA) , WC (20mA) , Wz (zero potentiometer), WA (range
potentiometer, also known as calibration potentiometer) and host alarm has been set right before it leaves
the factory. User should not adjust casually. It is the value of zero potentiometer (Z) and calibration
potentiometer (S) needed to be set on spot.
10
1. Zero Point Calibration
Open the detector in clean air, if there is readings after counting down.
Press the button "MENU" of the remote controller, the detector displays "F-01", press"+" or"-", change
the function to "F-04", and click "OK". The detector value will be displayed as 0.
In the zero calibration of oxygen detection transmitter, we must use nitrogen of purity over
99.99%.
PRV
PTFE PIPE
Empty
Gas detector
Standard gas
Flowmeter
2. Range Calibration
1. Enter into "F-07"as the same way above . The
"F-07" value is the concentration of the standard gas,
initialized to half of the measure range. This value can
be modified through the"+" and"-" keys to make it
consistent with the standard gas concentration which
need to be calibrated. Press
"OK" to exit.
2. Enter into"F-08"to change 0 into 1,then back to
detection interface.
3. Connect the 200-400mL/min standard gas in
detection interface, when the detector value is stable,
press "OK" for 3 seconds, then the instrument will be
calibrated automatically. The measured concentration
value is consistent with the value set in "F-07".
4. After calibration, left the detector in the air for a
while. Shut off the power when the detector value is
close to zero.
Common Malfunction, Repair and Maintenance
Product component
Fixed Gas Detector
Instruction Manual
Qualification Certificate
Remote Control
one
one
one
one
Symptom
No output
for
transmitter
Reason
wrong connection
potential in reference point is not
correct
Too low
host
reading
Circuit fault
Value of S potentiometer
setting is too small
Too high
host
reading
Transmitter failure
Value of S potentiometer
setting is too large
Transmitter failure
Instable
host
reading
Heat settling time is not
enough
Transmitter failure
Circuit fault
Method to process
connect again
Adjust zero point gradually and then adjust potentiometer (4mA) Return to
Yuante for repair
Calibrate again
Get a new transmitter
Calibrate again
Get a new transmitter
Wait for starting up
Get a new transmitter
Return to Yuante for repair
11
Table of contents
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