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 fccf52b..8689c20 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
@@ -1,12 +1,12 @@
 package com.yinuo.safetywatcher.watcher.port
 
-import com.yinuo.safetywatcher.watcher.port.cmd.C02
+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_C02
+import com.yinuo.safetywatcher.watcher.port.cmd.MOLECULAR_CO2
 import com.yinuo.safetywatcher.watcher.port.cmd.MOLECULAR_CL2
 import com.yinuo.safetywatcher.watcher.port.cmd.MOLECULAR_CO
 import com.yinuo.safetywatcher.watcher.port.cmd.MOLECULAR_H2S
@@ -14,11 +14,11 @@ import com.yinuo.safetywatcher.watcher.port.cmd.MOLECULAR_HF
 import com.yinuo.safetywatcher.watcher.port.cmd.MOLECULAR_NH3
 import com.yinuo.safetywatcher.watcher.port.cmd.MOLECULAR_NO
 import com.yinuo.safetywatcher.watcher.port.cmd.MOLECULAR_NO2
-import com.yinuo.safetywatcher.watcher.port.cmd.MOLECULAR_S02
+import com.yinuo.safetywatcher.watcher.port.cmd.MOLECULAR_SO2
 import com.yinuo.safetywatcher.watcher.port.cmd.NH3
 import com.yinuo.safetywatcher.watcher.port.cmd.NO
 import com.yinuo.safetywatcher.watcher.port.cmd.NO2
-import com.yinuo.safetywatcher.watcher.port.cmd.S02
+import com.yinuo.safetywatcher.watcher.port.cmd.SO2
 
 // ppm转mgm3转化率
 const val PPM_TO_MGM3_CONVERSION_RATE = 0.0409f
@@ -41,8 +41,8 @@ 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 S02_MIN_PPM = 2f
-const val S02_MAX_PPM = 5f
+const val SO2_MIN_PPM = 2f
+const val SO2_MAX_PPM = 5f
 const val CL2_MIN_PPM = 0.5f
 const val CL2_MAX_PPM = 1f
 const val NO2_MIN_PPM = 2f
@@ -51,8 +51,8 @@ const val NO_MIN_PPM = 13f
 const val NO_MAX_PPM = 25f
 const val HF_MIN_PPM = 2f
 const val HF_MAX_PPM = 6f
-const val C02_MIN_PPM = 5000f
-const val C02_MAX_PPM = 30000f
+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
@@ -77,8 +77,8 @@ val default_threshold_map_ppm = hashMapOf(
 //    Pair("${H2}_$MAX_SUFFIX", lel2ppm(H2_MAX_LEL, H2_LEL2PPMFACTOR)),
     Pair("${NH3}_$MIN_SUFFIX", NH3_MIN_PPM),
     Pair("${NH3}_$MAX_SUFFIX", NH3_MAX_PPM),
-    Pair("${S02}_$MIN_SUFFIX", S02_MIN_PPM),
-    Pair("${S02}_$MAX_SUFFIX", S02_MAX_PPM),
+    Pair("${SO2}_$MIN_SUFFIX", SO2_MIN_PPM),
+    Pair("${SO2}_$MAX_SUFFIX", SO2_MAX_PPM),
     Pair("${CL2}_$MIN_SUFFIX", CL2_MIN_PPM),
     Pair("${CL2}_$MAX_SUFFIX", CL2_MAX_PPM),
     Pair("${NO2}_$MIN_SUFFIX", NO2_MIN_PPM),
@@ -87,8 +87,8 @@ val default_threshold_map_ppm = hashMapOf(
     Pair("${NO}_$MAX_SUFFIX", NO_MAX_PPM),
     Pair("${HF}_$MIN_SUFFIX", HF_MIN_PPM),
     Pair("${HF}_$MAX_SUFFIX", HF_MAX_PPM),
-    Pair("${C02}_$MIN_SUFFIX", C02_MIN_PPM),
-    Pair("${C02}_$MAX_SUFFIX", C02_MAX_PPM),
+    Pair("${CO2}_$MIN_SUFFIX", CO2_MIN_PPM),
+    Pair("${CO2}_$MAX_SUFFIX", CO2_MAX_PPM),
 )
 
 // 气体默认阈值表
@@ -103,8 +103,8 @@ val default_threshold_map_mgm3 = hashMapOf(
 //    Pair("${H2}_$MAX_SUFFIX", ppm2mgm3(lel2ppm(H2_MAX_LEL, H2_LEL2PPMFACTOR), MOLECULAR_H2)),
     Pair("${NH3}_$MIN_SUFFIX", ppm2mgm3(NH3_MIN_PPM, MOLECULAR_NH3)),
     Pair("${NH3}_$MAX_SUFFIX", ppm2mgm3(NH3_MAX_PPM, MOLECULAR_NH3)),
-    Pair("${S02}_$MIN_SUFFIX", ppm2mgm3(S02_MIN_PPM, MOLECULAR_S02)),
-    Pair("${S02}_$MAX_SUFFIX", ppm2mgm3(S02_MAX_PPM, MOLECULAR_S02)),
+    Pair("${SO2}_$MIN_SUFFIX", ppm2mgm3(SO2_MIN_PPM, MOLECULAR_SO2)),
+    Pair("${SO2}_$MAX_SUFFIX", ppm2mgm3(SO2_MAX_PPM, MOLECULAR_SO2)),
     Pair("${CL2}_$MIN_SUFFIX", ppm2mgm3(CL2_MIN_PPM, MOLECULAR_CL2)),
     Pair("${CL2}_$MAX_SUFFIX", ppm2mgm3(CL2_MAX_PPM, MOLECULAR_CL2)),
     Pair("${NO2}_$MIN_SUFFIX", ppm2mgm3(NO2_MIN_PPM, MOLECULAR_NO2)),
@@ -113,8 +113,8 @@ val default_threshold_map_mgm3 = hashMapOf(
     Pair("${NO}_$MAX_SUFFIX", ppm2mgm3(NO_MAX_PPM, MOLECULAR_NO)),
     Pair("${HF}_$MIN_SUFFIX", ppm2mgm3(HF_MIN_PPM, MOLECULAR_HF)),
     Pair("${HF}_$MAX_SUFFIX", ppm2mgm3(HF_MAX_PPM, MOLECULAR_HF)),
-    Pair("${C02}_$MIN_SUFFIX", ppm2mgm3(C02_MIN_PPM, MOLECULAR_C02)),
-    Pair("${C02}_$MAX_SUFFIX", ppm2mgm3(C02_MAX_PPM, MOLECULAR_C02)),
+    Pair("${CO2}_$MIN_SUFFIX", ppm2mgm3(CO2_MIN_PPM, MOLECULAR_CO2)),
+    Pair("${CO2}_$MAX_SUFFIX", ppm2mgm3(CO2_MAX_PPM, MOLECULAR_CO2)),
 )
 
 val default_threshold_map_unit = hashMapOf(
@@ -132,7 +132,7 @@ val so2_gas_cross_impact_map = hashMapOf(
 
 val co_gas_cross_impact_map = hashMapOf(
     Pair(H2S, -0.25f),
-    Pair(S02, -0.25f),
+    Pair(SO2, -0.25f),
     Pair(NO, -0.5f),
     Pair(H2, -0.125f)
 )
@@ -144,9 +144,9 @@ val h2s_gas_cross_impact_map = hashMapOf(
 val nh3_gas_cross_impact_map = hashMapOf(
     Pair(CO, 0.02f),
     Pair(H2S, -3.4f),
-    Pair(C02, 0.0005f),
+    Pair(CO2, 0.0005f),
     Pair(H2, 0.0015f),
-    Pair(S02, -1.6f),
+    Pair(SO2, -1.6f),
     Pair(NO2, 1f),
     Pair(CL2, 0.5f)
 )
@@ -160,7 +160,7 @@ val no_gas_cross_impact_map = hashMapOf(
  * 气体交叉影响系数表
  */
 val gas_cross_impact_map = hashMapOf(
-    Pair(S02, so2_gas_cross_impact_map),
+    Pair(SO2, so2_gas_cross_impact_map),
     Pair(CO, co_gas_cross_impact_map),
     Pair(H2S, h2s_gas_cross_impact_map),
 //    Pair(CL2, gas_cross_impact_map),
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 82aae63..8c6040a 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
@@ -4,7 +4,7 @@ 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.C02
+import com.yinuo.safetywatcher.watcher.port.cmd.CO2
 import com.yinuo.safetywatcher.watcher.port.cmd.CH4
 import com.yinuo.safetywatcher.watcher.port.cmd.CL2
 import com.yinuo.safetywatcher.watcher.port.cmd.CO
@@ -17,7 +17,7 @@ import com.yinuo.safetywatcher.watcher.port.cmd.NH3
 import com.yinuo.safetywatcher.watcher.port.cmd.NO
 import com.yinuo.safetywatcher.watcher.port.cmd.NO2
 import com.yinuo.safetywatcher.watcher.port.cmd.O2
-import com.yinuo.safetywatcher.watcher.port.cmd.S02
+import com.yinuo.safetywatcher.watcher.port.cmd.SO2
 import com.yinuo.safetywatcher.watcher.port.cmd.VOCS
 import com.yinuo.safetywatcher.watcher.port.cmd.getGasTypeEnumByDesc
 
@@ -149,7 +149,7 @@ fun getDefaultUnit(gasType: String): String {
         O2 -> UNIT_VOL
         CH4, H2 -> UNIT_LEL
         VOCS -> UNIT_PPM
-        CO, H2S, NH3, S02, CL2, NO2, NO, HF, C02 -> 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/cmd/GasTypeEnum.kt b/app/src/main/java/com/yinuo/safetywatcher/watcher/port/cmd/GasTypeEnum.kt
index 370e238..87d549b 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
@@ -6,12 +6,12 @@ const val O2 = "O2"
 const val H2S = "H2S"
 const val H2 = "H2"
 const val NH3 = "NH3"
-const val S02 = "S02"
+const val SO2 = "SO2"
 const val CL2 = "CL2"
 const val NO2 = "NO2"
 const val NO = "NO"
 const val HF = "HF"
-const val C02 = "C02"
+const val CO2 = "CO2"
 const val VOCS = "VOCS"
 
 /**
@@ -23,12 +23,12 @@ const val MOLECULAR_CH4 = 16
 const val MOLECULAR_O2 = 32
 const val MOLECULAR_H2 = 2
 const val MOLECULAR_NH3 = 17
-const val MOLECULAR_S02 = 64
+const val MOLECULAR_SO2 = 64
 const val MOLECULAR_CL2 = 71
 const val MOLECULAR_NO2 = 46
 const val MOLECULAR_NO = 30
 const val MOLECULAR_HF = 20
-const val MOLECULAR_C02 = 44
+const val MOLECULAR_CO2 = 44
 
 const val CH4_LEL2PPMFACTOR = 500f
 const val H2S_LEL2PPMFACTOR = 430f
@@ -61,12 +61,12 @@ enum class GasTypeEnum(
     TYPE_H2S(52, H2S, RANGE_MAX_H2S, MOLECULAR_O2, H2S_LEL2PPMFACTOR),
     TYPE_H2(50, H2, RANGE_MAX_H2_CH4, MOLECULAR_H2, H2_LEL2PPMFACTOR),
     TYPE_NH3(63, NH3, RANGE_MAX_NH3, MOLECULAR_NH3),
-    TYPE_S02(72, S02, RANGE_MAX_SO2, MOLECULAR_S02),
+    TYPE_SO2(72, SO2, RANGE_MAX_SO2, MOLECULAR_SO2),
     TYPE_CL2(17, CL2, RANGE_MAX_CL2, MOLECULAR_CL2),
     TYPE_NO2(60, NO2, RANGE_MAX_NO2, MOLECULAR_NO2),
     TYPE_NO(59, NO, RANGE_MAX_NO, MOLECULAR_NO),
     TYPE_HF(57, HF, RANGE_MAX_HF, MOLECULAR_HF),
-    TYPE_C02(6, C02, RANGE_MAX_CO2, MOLECULAR_C02),
+    TYPE_CO2(6, CO2, RANGE_MAX_CO2, MOLECULAR_CO2),
     TYPE_VOCS(80, VOCS, RANGE_MAX_VOCS),
     TYPE_UNKNOW(-1, "UNKNOW", -1)
 }