Honeywell Midas-M Chlorine (CI2) Sensor, 0-2 ppm, 2 years

Gas Measured	Chlorine (Cl2)
Cartridge Part Number	MMS-L2
Sensor Technology	3 electrode electrochemical cell
Measuring Range	Cl2	0 ppm to 2 ppm
Default Alarm 1	0.25 ppm (rising)
Default Alarm 2	0.5 ppm (rising)
Accuracy	<±5% of measured value
	Exposure to Cl2 1 ppm for 5 minutes
Response Time (t62.5)	Typical 7 seconds
Sensor Cartridge Life Expectancy	24 months under typical application conditions
Operating Temperature	0ºC to 40ºC (32ºF to 104ºF)
Effect of Temperature	Zero	<±0.005 ppm/ºC
	Sensitivity	<±1% of measured value/ºC
Operating Humidity (continuous)	20% RH to 75% RH
Effect of Humidity	Zero	<±0.003 ppm/% RH
	Sensitivity	<±0.3% of measured value/% RH
Operating Pressure	70 kPa to 110 kPa
Effect of Position	No effect in typical application
Long Term Drift	Zero	<±2 ppm/year
	Sensitivity	<10% of measured value/year
Calibration Gas	Chlorine (0.25 ppm to 0.75 ppm, default 1 ppm)
Challenge Gas (Bump Test)	Chlorine (1 ppm)
Warm Up Time	<10 minutes
Storage Temperature	5°C to 25°C (41°F to 77°F)

Cross Sensitivities

Each Midas-M sensor is potentially cross sensitive to other gases and this may cause a gas reading when exposed to other gases than those originally designated. The table below presents typical readings that will be observed when a new sensor cartridge is exposed to the cross sensitive gas (or a mixture of gases containing the cross sensitive species).

Gas / Vapor	Chemical Formula	Concentration applied (ppm)	Reading (ppm Cl2)
Ammonia	NH3	50	0.28
Carbon Monoxide	CO	20000	0
Fluorine	F2	2	1.48
Hydrogen Chloride	HCl	4	0.68
Hydrogen Fluoride	HF	6	1.13
Hydrogen Sulfide	H2S	25	-16.3
Nitrogen Dioxide	NO2	50	1.25 (transient)
Ozone	O3	0.2	0.24
Sulfur Dioxide	SO2	50	9.1

Midas-M Sensor Cartridge Quick Reference Guide

Midas-M Chlorine Sensor Specifications