INTERNATIONAL: +44 1623 663636 | SALES: sales@dynament.com | TECHNICAL SUPPORT: support@dynament.com 

Standard 'Non-Ex' Sensors  

Features 
Single-gas types for Hydrocarbon gases, Carbon Dioxide or Nitrous Oxide. 
Sensors may be calibrated to customer specification. 
Operating voltage 3 to 5 volts dc, nominal current = 60mA. 
Provides 'raw' signal output for processing external to the sensor. 
OEM board available containing the necessary processing electronics and LCD display. 
Fast response. 
Internal temperature signal output. 
Temperature compensated detector elements. 
Wide operating temperature range of -20 to +50 deg. C. 
Industry standard size - 20mm diameter x 16.6mm high (excluding pins). 
Optional replaceable, self-adhesive micro porous 1 micron filter. 
OEM Circuit Board and Development Kit available - see below. 
Note - Infrared sensors cannot be used to detect Hydrogen gas. 
 
Standard series infrared gas sensors provide a 'raw' signal output which needs to be be fed into external processing electronics and software. This may either be provided by the equipment manufacturer or by use of a purpose-designed OEM board available from Dynament Ltd. 
 
They are are intended for use either in non-certified gas detection equipment or in hazardous area certified equipment where the equipment manufacturer provides the necessary protection by means of a separately certified explosion protected housing. 
 
The sensors are contained in a stainless steel housing fitted with a single protective stainless steel mesh. This ensures a minimum response time to gas in applications where the sensor is to be fitted within a separately certified explosion protected housing protected by a sintered flame arrestor such as a sinter. 
 
The construction of the non-certified types provide a small cost saving compared with the certified types. 
 
The sensors can be used to measure Hydrocarbon gases, Carbon Dioxide or Nitrous Oxide, depending upon the sensor type, within a wide range of commercial and industrial applications. 
 
The standard measurement ranges are as follows:- 
 
Hydrocarbon - LEL & 0-100% Volume. 
Carbon Dioxide - 0-500ppm up to 0-5% Volume & 0-100% Volume. 
Nitrous Oxide - 0-1000ppm up to 0-1% Volume. 
 
Although the 0-100% Volume Hydrocarbon type will also measure LEL values it will not provide the necessary resolution for explosion protection applications. The standard calibration gas for Hydrocarbon is Methane (CH4) unless otherwise requested
 
If you require advice or have a requirement for a particular measurement range not shown below then please contact us and we will be please to assist you with your application. 
 

Hydrocarbon Types 

The Hydrocarbon sensor order codes commence with MSH-HC/NC (for 0-100% LEL Hydrocarbons) or MSH-HHC/NC (for 0-100% Volume Hydrocarbons) followed by other options such as a filter (see below) and/or an electrically isolated case (suffix I). 
 
There are two filter options available for this sensor:- 
 
F - Self adhesive 14 micron PTFE filter for water ingress protection. 
P - Removeable 45 micron plastic dust filter insert - P. 
 
The table below gives details of the order codes of sensors for measurement of 0-100% LEL (Lower Explosive Limit) of the target gas. 
ORDER CODE 
DESCRIPTION 
MSH-HC/NC 
Standard 0-100% LEL Hydrocarbon Sensor, 'Non-Ex' 
MSH-HC/NC/I 
Standard 0-100% LEL Hydrocarbon Sensor, 'Non-Ex' 
With an Electrically Isolated Case 
MSH-HC/NC/F 
Standard 0-100% LEL Hydrocarbon Sensor, 'Non-Ex' 
With a 14 Micron PTFE Filter 
MSH-HC/NC/I/F 
Standard 0-100% LEL Hydrocarbon Sensor, 'Non-Ex' 
With an Electrically Isolated Case and 14 Micron PTFE Filter 
MSH-HC/NC/P 
Standard 0-100% LEL Hydrocarbon Sensor, (Non-'Ex') 
With a 45 Micron Plastic Dust Filter 
MSH-HC/NC/I/P 
Standard 0-100% LEL Hydrocarbon Sensor, (Non-'Ex') 
With an Electrically Isolated Case and 45 Micron Plastic Dust Filter 
The table below gives details of the order codes of sensors for measurement of 0-100% Volume concentration of the target gas. 
ORDER CODE 
DESCRIPTION 
MSH-HHC/NC 
Standard 0-100% Volume Hydrocarbon Sensor, 'Non-Ex' 
MSH-HHC/NC/I 
Standard 0-100% Volume Hydrocarbon Sensor, 'Non-Ex' 
With an Electrically Isolated Case 
MSH-HHC/NC/F 
Standard 0-100% Volume Hydrocarbon Sensor, 'Non-Ex' 
With a 14 Micron PTFE Filter 
MSH-HHC/NC/I/F 
Standard 0-100% Volume Hydrocarbon Sensor, 'Non-Ex' 
With an Electrically Isolated Case and 14 Micron PTFE Filter 
MSH-HHC/NC/P 
Standard 0-100% Volume Hydrocarbon Sensor (Non-'Ex') 
With a 45 Micron Plastic Dust Filter 
MSH-HHC/NC/I/P 
Standard 0-100% Volume Hydrocarbon Sensor (Non-'Ex') 
With an Electrically Isolated Case and 45 Micron Plastic Dust Filter 

Carbon Dioxide Types 

The sensors are within the Carbon Dioxide series which commence with the MSH-CO2 (for sensors up to 5% volume) or MSH-HCO2 (for sensors up to 100% volume) followed other options such as a filter (see below) and/or an electrically isolated case (suffix I). 
 
There are two filter options available for this sensor:- 
 
F - Self adhesive 14 micron PTFE filter for water ingress protection. 
P - Removeable 45 micron plastic dust filter insert - P. 
 
The table below gives details of the order codes of sensors for measurement of the range 0-5% Volume
ORDER CODE 
DESCRIPTION 
MSH-CO2/NC 
Standard 0 - 5% Vol. Carbon Dioxide Sensor, 'Non-Ex' 
MSH-CO2/NC/I 
Standard 0 - 5% Vol. Carbon Dioxide Sensor, 'Non-Ex' 
With an Electrically Isolated Case 
MSH-CO2/NC/F 
Standard 0 - 5% Vol. Carbon Dioxide Sensor, 'Non-Ex' 
With a 14 Micron PTFE Filter 
MSH-CO2/NC/I/F 
Standard 0 - 5% Vol. Carbon Dioxide Sensor, 'Non-Ex' 
With an Electrically Isolated Case and 14 Micron PTFE Filter 
MSH-CO2/NC/P 
Standard 0 - 5% Vol. Carbon Dioxide Sensor, 'Non-Ex' 
With a 45 Micron Plastic Dust Filter 
MSH-CO2/NC/I/P 
Standard 0 - 5% Vol. Carbon Dioxide Sensor, 'Non-Ex' 
With an Electrically Isolated Case and a 45 Micron Plastic Dust Filter 
The table below gives details of the order codes of sensors for measurement of the range 0-100% Volume. 
ORDER CODE 
DESCRIPTION 
MSH-HCO2/NC 
Standard 0 - 100% Vol. Carbon Dioxide Sensor, 'Non-Ex' 
MSH-HCO2/NC/I 
Standard 0 - 100% Vol. Carbon Dioxide Sensor, 'Non-Ex' 
With an Electrically Isolated Case 
MSH-HCO2/NC/F 
Standard 0 - 100% Vol. Carbon Dioxide Sensor, 'Non-Ex' 
With a 14 Micron PTFE Filter 
MSH-HCO2/NC/I/F 
Standard 0 - 100% Vol. Carbon Dioxide Sensor, 'Non-Ex' 
With an Electrically Isolated Case and 14 Micron PTFE Filter 
MSH-HCO2/NC/P 
Standard 0 - 100% Vol. Carbon Dioxide Sensor, 'Non-Ex' 
With a 45 Micron Plastic Dust Filter 
MSH-HCO2/NC/I/P 
Standard 0 - 100% Vol. Carbon Dioxide Sensor, 'Non-Ex' 
With an Electrically Isolated Case and a 45 Micron Plastic Dust Filter 

Nitrous Oxide Types 

The sensor order codes commence with the code MSH-N2O/NC followed other options such as a filter (see below) and/or an electrically isolated case (suffix I). 
 
There are two filter options available for this sensor:- 
 
F - Self adhesive 14 micron PTFE filter for water ingress protection. 
P - Removeable 45 micron plastic dust filter insert - P. 
 
The table below gives the order codes and description of typical sensor types that are available over the ranges 0-2000ppm up to 0-1% volume. 
ORDER CODE 
DESCRIPTION 
MSH-N2O/NC + measurement range 
Standard Nitrous Oxide Sensor, 'Non-Ex' 
MSH-N2O/NC/I + measurement range 
Standard Nitrous Oxide Sensor, 'Non-Ex' 
With an Electrically Isolated Case 
MSH-N2O/NC/F + measurement range 
Standard Nitrous Oxide Sensor, 'Non-Ex' 
With a 14 Micron PTFE Filter 
MSH-N2O/NC/I/F + measurement range 
Standard Nitrous Oxide Sensor, 'Non-Ex' 
With an Electrically Isolated Case and 14 Micron PTFE Filter 
MSH-N2O/NC/P + measurement range 
Standard Nitrous Oxide Sensor (Non-'Ex') 
With a 45 Micron Plastic Dust Filter 
MSH-N2O/NC/I/P + measurement range 
Standard Nitrous Oxide Sensor (Non-'Ex') 
With an Electrically Isolated Case and 45 Micron Plastic Dust Filter