DigiGas-TOXIC Hazardous Gas Concentration Sensor, RS485, SDI-12 Interface

Time:2026/01/21 View:1541 Category:Gas Concentration Category:Measurements Category:Products Category:SDI-12 Products Category:SDI-12 Sensors

　　The DigiGas-TOXIC hazardous gas concentration sensor is based on electrochemical gas sensor technology and can detect the concentration value of a single gas (including but not limited to: ammonia, hydrogen sulfide, carbon monoxide, nitric oxide, nitrogen dioxide, sulfur dioxide, phosphine, hydrogen, ethylene oxide, hydrogen cyanide, methyl mercaptan, tetrafluorothiophene, hydrogen chloride, chlorine, oxygen). The sensor is equipped with built-in temperature compensation and features low baseline drift, high sensitivity, high precision and long service life.

　　The sensor supports SDI-12 interface or RS485 interface (Modbus-RTU protocol), and is compatible with various data collectors that support SDI-12 and RS485 communication for long-distance multi-point monitoring and recording.

Resources
User Manual	DigiGas-TOXIC Hazardous Gas Concentration Sensor User Manual (RS485, SDI-12 Interface)
Software (RS485 Interface)	SensorOneSet-EN
Software (SDI-12 Interface)	SensorOneSetSDI12-EN

Features

■ Single hazardous gas concentration detection, with the option of multiple different harmful gas sensors

■ Low baseline drift, high precision, long service life, and good interchangeability

■ Integrated gas concentration and temperature compensation

■ SDI-12 or RS485 communication interface with surge protection

■ Wall-mounted installation, small size, easy integration

■ Low-power devices can be used in battery-powered systems

■ Reverse power protection and Built-in TVS/ESD protection

■ Excellent price-performance ratio

Applications

■ Concentration monitoring of harmful gases

■ Environmental Monitoring

■ Laboratory

Specification
Output Interface	Optional: SDI-12, V1.3 Optional: RS485, Modbus-RTU
Power Supply	5-28V DC
Power Consumption	SDI-12 Interface: Quiescent current: <500uA @12V DC (The specific value depends on the type of gas) Max. current during measurement: <5mA@12VDC RS485 Interface: Quiescent current: <2mA @12V DC Max. current during measurement: <7mA@12VDC
Gas Type	Optional: Ammonia, hydrogen sulfide, carbon monoxide, nitric oxide, nitrogen dioxide, sulfur dioxide, phosphine, hydrogen, ethylene oxide, hydrogen cyanide, methyl mercaptan, tetrafluorothiophene, hydrogen chloride, chlorine, oxygen; Other gas types: Customizable
Gas Concentration	Range: Refer to chapter “Gas Quick Reference” or separate sensor data sheet. Resolution: Refer to chapter “Gas Quick Reference” or separate sensor data sheet. Accuracy: Refer to separate sensor data sheet. Response time: Refer to chapter “Gas Quick Reference” or separate sensor data sheet.
Temperature	Range: -40 to 80℃, resolution: 0.01℃, typical accuracy: +/-0.3℃
Operating	Refer to chapter “Gas Quick Reference” or separate sensor data sheet
IP Ratings	IP50
Installation	Wall mounting
Cable Length	2 meters or customization
Dimension	Sensor body: 11125.5mm (LengthDiameter)

Ordering Information

Parameters

Code

Comments

Code 1:Product Series

DigiGas-TOXIC

DigiGas-TOXIC, Hazardous Gas Concentration Sensor

Code 2:

Gas Type ID

xxxx

0001

0002

0003

0004

0005

0006

0007

0008

0009

0010

0011

0012

0013

0014

0015

0016

0017

0018

0019

0020

0021

0022

0023

0024

0025

0026

0027

0028

0029

0030

Customization

Ammonia (-100 ppm) [Honeywell Part No.：CLE-1012-401]

Ammonia (0-500 ppm) [Honeywell Part No.：CLE-1052-400]

Hydrogen Sulfide (0-100 ppm) [Honeywell Part No.：CLE-0112-400]

Hydrogen Sulfide (0-1000 ppm) [Honeywell Part No.：CLE-0113-400]

Carbon Monoxide (0-500 ppm) [Honeywell Part No.：CLE-0052-400]

Carbon Monoxide (0-2000 ppm) [Honeywell Part No.：CLE-0023-400]

Nitrogen Dioxide (0-20 ppm) [Honeywell Part No.：CLE-0321-400]

Nitrogen Dioxide (0-2000 ppm) [Honeywell Part No.：CLE-0323-400]

Nitric Oxide (0-250 ppm) [Honeywell Part No.：CLE-0522-400]

Nitric Oxide (0-2000 ppm) [Honeywell Part No.：CLE-0523-400]

Sulphur Dioxide (0-20 ppm) [Honeywell Part No.：CLE-0421-400]

Sulphur Dioxide (0-2000 ppm) [Honeywell Part No.：CLE-0423-400]

Phosphine (0-20 ppm) [Honeywell Part No.：CLE-1121-400]

Phosphine (0-1000 ppm) [Honeywell Part No.：CLE-1113-400]

Hydrogen (0-1000 ppm) [Honeywell Part No.：CLE-0613-400]

Hydrogen (0-40000 ppm) [Honeywell Part No.：CLE-0644-400]

Ethylene Oxide (0-10 ppm) [Honeywell Part No.：CLE-1212-400]

Ethylene Oxide (0-100 ppm) [Honeywell Part No.：CLE-1222-400]

Ethylene Oxide (0-500 ppm) [Honeywell Part No.：CLE-1213-400]

Hydrogen Cyanide (0-50 ppm) [Honeywell Part No.：CLE-0731-400]

Methyl Mercaptan (0-10 ppm) [Honeywell Part No.：CLE-3611-400]

Tetrahydrothiophene (0-50 ppm) [Honeywell Part No.：CLE-3501-400]

Hydrogen Chloride (0-30 ppm) [Honeywell Part No.：CLE-1431-400]

Chlorine Dioxide (0-1 ppm) [Honeywell Part No.：CLE-0810-400]

Chlorine Dioxide (0-50 ppm) [Honeywell Part No.：CLE-0851-400]

Chlorine (0-10 ppm) [Honeywell Part No.：CLE-0911-400]

Chlorine (0-50 ppm) [Honeywell Part No.：CLE-0951-400]

Chlorine (0-200 ppm) [Honeywell Part No.：CLE-0922-400]

Oxygen (0-30%Non Liquid Electrolyte) [Honeywell Part No.：CLE-0231-40S]

Oxygen (0-30%) [Honeywell Part No.：CLE-0231-400]

Code 3: Power Supply

5-28V DC

Customize

Code 4: Output Interface

RS485(Modbus-RTU)

SDI-12

Code 5: Connector

Cold pressed terminal

Stripped & tinned lead wires

Code 6: Cable Length

002

XXX

2 Meters

Customize, XXX is required cable length (Unit: meter)

Ordering Code Example: DigiGas-TOXIC-0001 A A B 002

Product Series: DigiGas-TOXIC, Hazardous Gas Concentration Sensor;

Gas Type ID: Ammonia (0-100 ppm) [Honeywell Part No.: CLE-1012-401];

Power Supply: 5-28V DC

Output Interface: RS485(Modbus-RTU);

Connector: Cold pressed terminal;

Cable Length: 2 Meters

Gas Parameters
Gas Type ID	Gas Name	Full Range	Resolution	Decimal Point Number
xxxx	Customization	TBD	TBD	TBD
0001	Ammonia NH3	0-100 ppm	0.5 ppm	1
0002	Ammonia NH3	0-500 ppm	3 ppm	1
0003	Hydrogen Sulfide H2S	0-100 ppm	0.1 ppm	1
0004	Hydrogen Sulfide H2S	0-1000 ppm	1 ppm	1
0005	Carbon Monoxide CO	0-500 ppm	1 ppm	1
0006	Carbon Monoxide CO	0-2000 ppm	10 ppm	1
0007	Nitrogen Dioxide NO2	0-20 ppm	0.1 ppm	1
0008	Nitrogen Dioxide NO2	0-2000 ppm	5 ppm	1
0009	Nitric Oxide NO	0-250 ppm	0.5 ppm	1
0010	Nitric Oxide NO	0-2000 ppm	1 ppm	1
0011	Sulphur Dioxide SO2	0-20 ppm	0.1 ppm	1
0012	Sulphur Dioxide SO2	0-2000 ppm	5 ppm	1
0013	Phosphine PH3	0-20 ppm	0.1 ppm	1
0014	Phosphine PH3	0-1000 ppm	1 ppm	1
0015	Hydrogen H2	0-1000 ppm	10 ppm	1
0016	Hydrogen H2	0-40000 ppm	80 ppm	0
0017	Ethylene Oxide ETO	0-10 ppm	0.1 ppm	1
0018	Ethylene Oxide ETO	0-100 ppm	1 ppm	1
0019	Ethylene Oxide ETO	0-500 ppm	10 ppm	1
0020	Hydrogen Cyanide HCN	0-50 ppm	0.2 ppm	1
0021	Methyl Mercaptan CH3SH	0-10 ppm	0.1 ppm	1
0022	Tetrahydrothiophene THT	0-50 mg/m3	0.3 mg/m3	1
0023	Hydrogen Chloride HCl	0-30 ppm	1 ppm	1
0024	Chlorine Dioxide ClO2	0-1 ppm	0.03 ppm	2
0025	Chlorine Dioxide ClO2	0-50 ppm	0.05 ppm	2
0026	Chlorine Cl2	0-10 ppm	0.1 ppm	1
0027	Chlorine Cl2	0-50 ppm	0.1 ppm	1
0028	Chlorine Cl2	0-200 ppm	0.1 ppm	1
0029	Oxygen O2 (Non Liquid Electrolyte)	0-30 %	0.1% O2	1
0030	Oxygen O2	0-30 %	0.1% O2	1

Gas Parameters
Gas Type ID	Gas Name	Sensitivity (nA)	Operating (non-condensing)
xxxx	Customization	TBD	TBD
0001	Ammonia NH3	135±35 nA/ppm	-20~40℃, 15~90%RH, 90~110 kPa
0002	Ammonia NH3	35±15 nA/ppm	-20~40℃, 15~90%RH, 90~110 kPa
0003	Hydrogen Sulfide H2S	800±200 nA/ppm	-20~50℃, 10~90%RH, 90~110 kPa
0004	Hydrogen Sulfide H2S	105±55 nA/ppm	-20~50℃, 10~90%RH, 90~110 kPa
0005	Carbon Monoxide CO	70±15 nA/ppm	-20~50℃, 10~90%RH, 90~110 kPa
0006	Carbon Monoxide CO	28±10 nA/ppm	-20~50℃, 10~90%RH, 90~110 kPa
0007	Nitrogen Dioxide NO2	600±150 nA/ppm	-20~50℃, 10~90%RH, 90~110 kPa
0008	Nitrogen Dioxide NO2	20±10 nA/ppm	-20~50℃, 10~90%RH, 90~110 kPa
0009	Nitric Oxide NO	400±80 nA/ppm	-20~50℃, 10~90%RH, 90~110 kPa
0010	Nitric Oxide NO	130±60 nA/ppm	-20~50℃, 10~90%RH, 90~110 kPa
0011	Sulphur Dioxide SO2	500±100 nA/ppm	-20~40℃, 10~90%RH, 90~110 kPa
0012	Sulphur Dioxide SO2	20±8 nA/ppm	-20~50℃, 10~90%RH, 90~110 kPa
0013	Phosphine PH3	1400±600 nA/ppm	-20~50℃, 10~90%RH, 90~110 kPa
0014	Phosphine PH3	70±40 nA/ppm	-20~50℃, 10~90%RH, 90~110 kPa
0015	Hydrogen H2	20±10 nA/ppm	-20~50℃, 10~90%RH, 90~110 kPa
0016	Hydrogen H2	7±2 nA/ppm	-20~50℃, 10~90%RH, 91~110 kPa
0017	Ethylene Oxide ETO	1900±800 nA/ppm	-20~50℃, 10~90%RH, 90~110 kPa
0018	Ethylene Oxide ETO	250±0.125 nA/ppm	-20~50℃, 10~90%RH, 90~110 kPa
0019	Ethylene Oxide ETO	58±33 nA/ppm	-20~50℃, 10~90%RH, 90~110 kPa
0020	Hydrogen Cyanide HCN	100±20 nA/ppm	-20~50℃, 10~90%RH, 90~110 kPa
0021	Methyl Mercaptan CH3SH	700±150 nA/ppm	-20~50℃, 10~90%RH, 90~110 kPa
0022	Tetrahydrothiophene THT	150±50 nA/(mg/m3 )	-20~50℃, 10~90%RH, 90~110 kPa
0023	Hydrogen Chloride HCl	300±100 nA/ppm	-20~50℃, 10~90%RH, 90~110 kPa
0024	Chlorine Dioxide ClO2	-650±300 nA/ppm	-20~50℃, 10~90%RH, 90~110 kPa
0025	Chlorine Dioxide ClO2	-400±180 nA/ppm	-20~50℃, 10~90%RH, 90~110 kPa
0026	Chlorine Cl2	750±150 nA/ppm	-20~50℃, 10~90%RH, 90~110 kPa
0027	Chlorine Cl2	-450±200 nA/ppm	-20~50℃, 10~90%RH, 90~110 kPa
0028	Chlorine Cl2	180±50 nA/ppm	-20~50℃, 10~90%RH, 90~110 kPa
0029	Oxygen O2 (Non Liquid Electrolyte)	-16670±2381 nA/1%	-20~50℃, 10~90%RH, 90~110 kPa
0030	Oxygen O2	-16670±2381 nA/1%	-20~50℃, 10~90%RH, 90~110 kPa

Gas Parameters
Gas Type ID	Gas Name	Warm up time since power on	Response Time (T90)
xxxx	Customization	TBD	TBD
0001	Ammonia NH3	10 minutes at least	<90 s
0002	Ammonia NH3	10 minutes at least	<90 s
0003	Hydrogen Sulfide H2S	10 minutes at least	<35 s
0004	Hydrogen Sulfide H2S	10 minutes at least	<45 s
0005	Carbon Monoxide CO	10 minutes at least	<30 s
0006	Carbon Monoxide CO	10 minutes at least	<35 s
0007	Nitrogen Dioxide NO2	10 minutes at least	<30 s
0008	Nitrogen Dioxide NO2	10 minutes at least	<60 s
0009	Nitric Oxide NO	6 hours at least	<45 s
0010	Nitric Oxide NO	6 hours at least	<60 s
0011	Sulphur Dioxide SO2	10 minutes at least	<45 s
0012	Sulphur Dioxide SO2	10 minutes at least	<60 s
0013	Phosphine PH3	10 minutes at least	<60 s
0014	Phosphine PH3	10 minutes at least	<60 s
0015	Hydrogen H2	10 minutes at least	<70 s
0016	Hydrogen H2	10 minutes at least	<60 s
0017	Ethylene Oxide ETO	6 hours at least	<120 s
0018	Ethylene Oxide ETO	6 hours at least	<120 s
0019	Ethylene Oxide ETO	6 hours at least	<120 s
0020	Hydrogen Cyanide HCN	10 minutes at least	<120 s
0021	Methyl Mercaptan CH3SH	10 minutes at least	<40 s
0022	Tetrahydrothiophene THT	6 hours at least	<60 s
0023	Hydrogen Chloride HCl	6 hours at least	<70 s
0024	Chlorine Dioxide ClO2	10 minutes at least	<60 s
0025	Chlorine Dioxide ClO2	10 minutes at least	<60 s
0026	Chlorine Cl2	10 minutes at least	<30 s
0027	Chlorine Cl2	10 minutes at least	<30 s
0028	Chlorine Cl2	10 minutes at least	<30 s
0029	Oxygen O2 (Non Liquid Electrolyte)	6 hours at least	<30 s
0030	Oxygen O2	6 hours at least	<30 s

Dimension:

SDI-12 Interface:

RS485 Interface:

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