diff --git a/app/src/main/java/com/yinuo/safetywatcher/watcher/port/GasConstants.kt b/app/src/main/java/com/yinuo/safetywatcher/watcher/port/GasConstants.kt
index 8689c20..569c0de 100644
--- a/app/src/main/java/com/yinuo/safetywatcher/watcher/port/GasConstants.kt
+++ b/app/src/main/java/com/yinuo/safetywatcher/watcher/port/GasConstants.kt
@@ -3,7 +3,6 @@ package com.yinuo.safetywatcher.watcher.port
 import com.yinuo.safetywatcher.watcher.port.cmd.CO2
 import com.yinuo.safetywatcher.watcher.port.cmd.CL2
 import com.yinuo.safetywatcher.watcher.port.cmd.CO
-import com.yinuo.safetywatcher.watcher.port.cmd.H2
 import com.yinuo.safetywatcher.watcher.port.cmd.H2S
 import com.yinuo.safetywatcher.watcher.port.cmd.HF
 import com.yinuo.safetywatcher.watcher.port.cmd.MOLECULAR_CO2
@@ -37,8 +36,8 @@ const val CH4_MAX_LEL = 50f
 const val H2S_MIN_PPM = 10f
 const val H2S_MAX_PPM = 15f
 
-const val H2_MIN_LEL = 25f
-const val H2_MAX_LEL = 50f
+//const val H2_MIN_LEL = 25f
+//const val H2_MAX_LEL = 50f
 const val NH3_MIN_PPM = 25f
 const val NH3_MAX_PPM = 50f
 const val SO2_MIN_PPM = 2f
@@ -54,7 +53,6 @@ const val HF_MAX_PPM = 6f
 const val CO2_MIN_PPM = 5000f
 const val CO2_MAX_PPM = 30000f
 
-//?? TODO VOCS 这个值现在不对
 const val VOCS_MIN_PPM = 2f
 const val VOCS_MAX_PPM = 6f
 
@@ -134,7 +132,7 @@ val co_gas_cross_impact_map = hashMapOf(
     Pair(H2S, -0.25f),
     Pair(SO2, -0.25f),
     Pair(NO, -0.5f),
-    Pair(H2, -0.125f)
+//    Pair(H2, -0.125f)
 )
 
 val h2s_gas_cross_impact_map = hashMapOf(
@@ -145,7 +143,7 @@ val nh3_gas_cross_impact_map = hashMapOf(
     Pair(CO, 0.02f),
     Pair(H2S, -3.4f),
     Pair(CO2, 0.0005f),
-    Pair(H2, 0.0015f),
+//    Pair(H2, 0.0015f),
     Pair(SO2, -1.6f),
     Pair(NO2, 1f),
     Pair(CL2, 0.5f)
diff --git a/app/src/main/java/com/yinuo/safetywatcher/watcher/port/GasUtilss.kt b/app/src/main/java/com/yinuo/safetywatcher/watcher/port/GasUtilss.kt
index 1f99d33..c8b56f0 100644
--- a/app/src/main/java/com/yinuo/safetywatcher/watcher/port/GasUtilss.kt
+++ b/app/src/main/java/com/yinuo/safetywatcher/watcher/port/GasUtilss.kt
@@ -4,13 +4,12 @@ import android.content.Context
 import com.common.commonlib.db.entity.Warning
 import com.common.commonlib.utils.MMKVUtils
 import com.yinuo.safetywatcher.R
-import com.yinuo.safetywatcher.watcher.port.cmd.CO2
-import com.yinuo.safetywatcher.watcher.port.cmd.CH4
+import com.yinuo.safetywatcher.watcher.port.cmd.CH4_H2
 import com.yinuo.safetywatcher.watcher.port.cmd.CL2
 import com.yinuo.safetywatcher.watcher.port.cmd.CO
+import com.yinuo.safetywatcher.watcher.port.cmd.CO2
 import com.yinuo.safetywatcher.watcher.port.cmd.GasPortStatus
 import com.yinuo.safetywatcher.watcher.port.cmd.GasTypeEnum
-import com.yinuo.safetywatcher.watcher.port.cmd.H2
 import com.yinuo.safetywatcher.watcher.port.cmd.H2S
 import com.yinuo.safetywatcher.watcher.port.cmd.HF
 import com.yinuo.safetywatcher.watcher.port.cmd.NH3
@@ -36,7 +35,7 @@ private fun getHighThresHoldKey(gasType: String): String {
 fun saveLowThreshold(gasType: String, value: Float, localGasUnit: String) {
     var localValue = value
     // 氧气  可燃气体 和 挥发气体不转换数值
-    if (O2 == gasType || H2 == gasType || CH4 == gasType || VOCS == gasType) {
+    if (O2 == gasType || CH4_H2 == gasType || VOCS == gasType) {
         MMKVUtils.put(getLowThresHoldKey(gasType), localValue)
     } else {
         if (UNIT_MGM3 == localGasUnit) {
@@ -55,7 +54,7 @@ fun saveLowThreshold(gasType: String, value: Float, localGasUnit: String) {
  */
 fun saveHighThreshold(gasType: String, value: Float, localGasUnit: String) {
     var localValue = value
-    if (O2 == gasType || H2 == gasType || CH4 == gasType || VOCS == gasType) {
+    if (O2 == gasType || CH4_H2 == gasType || VOCS == gasType) {
         MMKVUtils.put(getLowThresHoldKey(gasType), localValue)
     } else {
         if (UNIT_MGM3 == localGasUnit) {
@@ -79,7 +78,7 @@ fun getGasLowThreshold(gasType: String, unit: String): Float {
         // 氧气特殊处理
         if (O2 == gasType) {
             return O2_MIN
-        } else if (H2 == gasType || CH4 == gasType) {
+        } else if (CH4_H2 == gasType) {
             return CH4_MIN_LEL
         } else if (VOCS == gasType) {
             return VOCS_MIN_PPM
@@ -87,7 +86,7 @@ fun getGasLowThreshold(gasType: String, unit: String): Float {
         return (default_threshold_map_unit[unit])?.get(lowThresholdKey) ?: -1f
     } else {
         // 氧气  可燃气体 和 挥发气体不转换数值
-        if (O2 == gasType || H2 == gasType || CH4 == gasType || VOCS == gasType) {
+        if (O2 == gasType || CH4_H2 == gasType || VOCS == gasType) {
             return localVlaue
         }
         if (UNIT_MGM3 == unit) {
@@ -111,7 +110,7 @@ fun getGasHighThreshold(gasType: String, unit: String): Float {
         // 氧气特殊处理
         if (O2 == gasType) {
             return O2_MAX
-        } else if (H2 == gasType || CH4 == gasType) {
+        } else if (CH4_H2 == gasType) {
             return CH4_MAX_LEL
         } else if (VOCS == gasType) {
             return VOCS_MAX_PPM
@@ -119,7 +118,7 @@ fun getGasHighThreshold(gasType: String, unit: String): Float {
         return (default_threshold_map_unit[unit])?.get(highThresholdKey) ?: -1f
     } else {
         // 氧气  可燃气体 和 挥发气体不转换数值
-        if (O2 == gasType || H2 == gasType || CH4 == gasType || VOCS == gasType) {
+        if (O2 == gasType || CH4_H2 == gasType || VOCS == gasType) {
             return localVlaue
         }
         if (UNIT_MGM3 == unit) {
@@ -147,7 +146,7 @@ fun getLocalGasUnit(gasType: String): String {
 fun getDefaultUnit(gasType: String): String {
     return when (gasType.uppercase()) {
         O2 -> UNIT_VOL
-        CH4, H2 -> UNIT_LEL
+        CH4_H2 -> UNIT_LEL
         VOCS -> UNIT_PPM
         CO, H2S, NH3, SO2, CL2, NO2, NO, HF, CO2 -> UNIT_PPM
         else -> UNIT_PPM
diff --git a/app/src/main/java/com/yinuo/safetywatcher/watcher/port/ParseHelper.kt b/app/src/main/java/com/yinuo/safetywatcher/watcher/port/ParseHelper.kt
index a875778..2c61fd0 100644
--- a/app/src/main/java/com/yinuo/safetywatcher/watcher/port/ParseHelper.kt
+++ b/app/src/main/java/com/yinuo/safetywatcher/watcher/port/ParseHelper.kt
@@ -12,12 +12,8 @@ import com.common.serialport.utils.HexUtils
 import com.yinuo.safetywatcher.watcher.bean.GasReqBean
 import com.yinuo.safetywatcher.watcher.constant.GAS_CLOUD_UPLOAD_SIZE_ONCE
 import com.yinuo.safetywatcher.watcher.net.DevicesApi
-import com.yinuo.safetywatcher.watcher.port.cmd.CH4
-import com.yinuo.safetywatcher.watcher.port.cmd.CH4_LEL2PPMFACTOR
 import com.yinuo.safetywatcher.watcher.port.cmd.GasPortStatus
 import com.yinuo.safetywatcher.watcher.port.cmd.GasTypeEnum
-import com.yinuo.safetywatcher.watcher.port.cmd.H2
-import com.yinuo.safetywatcher.watcher.port.cmd.H2_LEL2PPMFACTOR
 import com.yinuo.safetywatcher.watcher.port.cmd.O2
 import com.yinuo.safetywatcher.watcher.port.cmd.ResponseHelper
 import com.yinuo.safetywatcher.watcher.port.cmd.getGasTypeEnumByCode
@@ -43,6 +39,7 @@ object ParseHelper {
     fun setWarnChangeListener(onChange: (String, Warning?) -> Unit) {
         mWarnListener = onChange
     }
+
     fun parse(it: ByteArray) {
         try {
             Thread.sleep(0)
@@ -330,13 +327,7 @@ object ParseHelper {
                 val nameKey = entry.key
                 val coefficient = getInfluenceCoefficient(type, nameKey)
                 if (gasValue > 0f && coefficient != 0f) {
-                    // h2和Ch4需要先转换成ppm，再参与计算
-                    offset += if (H2 == nameKey || CH4 == nameKey) {
-                        val factor = if (H2 == nameKey) H2_LEL2PPMFACTOR else CH4_LEL2PPMFACTOR
-                        lel2ppm(gasValue, factor) * coefficient
-                    } else {
-                        gasValue * coefficient
-                    }
+                    offset += gasValue * coefficient
                 }
             }
         }
diff --git a/app/src/main/java/com/yinuo/safetywatcher/watcher/port/cmd/GasTypeEnum.kt b/app/src/main/java/com/yinuo/safetywatcher/watcher/port/cmd/GasTypeEnum.kt
index 8cdb923..f4f8383 100644
--- a/app/src/main/java/com/yinuo/safetywatcher/watcher/port/cmd/GasTypeEnum.kt
+++ b/app/src/main/java/com/yinuo/safetywatcher/watcher/port/cmd/GasTypeEnum.kt
@@ -1,10 +1,10 @@
 package com.yinuo.safetywatcher.watcher.port.cmd
 
 const val CO = "CO"
-const val CH4 = "可燃气"
+const val CH4_H2 = "可燃气"
 const val O2 = "O2"
 const val H2S = "H2S"
-const val H2 = "H2"
+//const val H2 = "H2"
 const val NH3 = "NH3"
 const val SO2 = "SO2"
 const val CL2 = "CL2"
@@ -21,7 +21,7 @@ const val MOLECULAR_CO = 28
 const val MOLECULAR_H2S = 34
 const val MOLECULAR_CH4 = 16
 const val MOLECULAR_O2 = 32
-const val MOLECULAR_H2 = 2
+//const val MOLECULAR_H2 = 2
 const val MOLECULAR_NH3 = 17
 const val MOLECULAR_SO2 = 64
 const val MOLECULAR_CL2 = 71
@@ -56,10 +56,10 @@ enum class GasTypeEnum(
     val lel2ppmFactor: Float = 0f
 ) {
     TYPE_CO(5, CO, RANGE_MAX_CO, MOLECULAR_CO),
-    TYPE_CH4(11, CH4, RANGE_MAX_H2_CH4, MOLECULAR_H2S, CH4_LEL2PPMFACTOR),
+    TYPE_CH4_H2(11, CH4_H2, RANGE_MAX_H2_CH4),
     TYPE_O2(67, O2, RANGE_MAX_O2, MOLECULAR_CH4),
     TYPE_H2S(52, H2S, RANGE_MAX_H2S, MOLECULAR_O2, H2S_LEL2PPMFACTOR),
-    TYPE_H2(50, H2, RANGE_MAX_H2_CH4, MOLECULAR_H2, H2_LEL2PPMFACTOR),
+//    TYPE_H2(50, H2, RANGE_MAX_H2_CH4, MOLECULAR_H2, H2_LEL2PPMFACTOR),
     TYPE_NH3(63, NH3, RANGE_MAX_NH3, MOLECULAR_NH3),
     TYPE_SO2(72, SO2, RANGE_MAX_SO2, MOLECULAR_SO2),
     TYPE_CL2(17, CL2, RANGE_MAX_CL2, MOLECULAR_CL2),
@@ -76,9 +76,12 @@ val gasTypeMap by lazy {
 }
 
 fun getGasTypeEnumByCode(code: Int): GasTypeEnum {
+    if (code == 50) {
+        return GasTypeEnum.TYPE_CH4_H2
+    }
     gasTypeMap.forEach {
         if (code == it.code) {
-            return it;
+            return it
         }
     }
     return GasTypeEnum.TYPE_UNKNOW
@@ -87,7 +90,7 @@ fun getGasTypeEnumByCode(code: Int): GasTypeEnum {
 fun getGasTypeEnumByDesc(desc: String): GasTypeEnum {
     gasTypeMap.forEach {
         if (desc == it.desc) {
-            return it;
+            return it
         }
     }
     return GasTypeEnum.TYPE_UNKNOW
diff --git a/app/src/main/java/com/yinuo/safetywatcher/watcher/ui/SensorSettingActivity.kt b/app/src/main/java/com/yinuo/safetywatcher/watcher/ui/SensorSettingActivity.kt
index 95ca42f..4358f08 100644
--- a/app/src/main/java/com/yinuo/safetywatcher/watcher/ui/SensorSettingActivity.kt
+++ b/app/src/main/java/com/yinuo/safetywatcher/watcher/ui/SensorSettingActivity.kt
@@ -11,8 +11,7 @@ import com.yinuo.safetywatcher.watcher.base.NoOptionsActivity
 import com.yinuo.safetywatcher.watcher.port.GasCache
 import com.yinuo.safetywatcher.watcher.port.UNIT_MGM3
 import com.yinuo.safetywatcher.watcher.port.UNIT_PPM
-import com.yinuo.safetywatcher.watcher.port.cmd.CH4
-import com.yinuo.safetywatcher.watcher.port.cmd.H2
+import com.yinuo.safetywatcher.watcher.port.cmd.CH4_H2
 import com.yinuo.safetywatcher.watcher.port.cmd.O2
 import com.yinuo.safetywatcher.watcher.port.cmd.VOCS
 import com.yinuo.safetywatcher.watcher.port.getGasRange
@@ -50,7 +49,7 @@ class SensorSettingActivity : NoOptionsActivity() {
             mBinding.rgUnit.visibility = View.GONE
             mBinding.rbLel.visibility = View.GONE
             mBinding.rbVol.visibility = View.VISIBLE
-        } else if (gasName == CH4 || gasName == H2){
+        } else if (gasName == CH4_H2){
             mBinding.rgUnit.visibility = View.GONE
             mBinding.rbVol.visibility = View.GONE
             mBinding.rbLel.visibility = View.VISIBLE