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 b8c46eb..c81641b 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
@@ -166,7 +166,7 @@ val gas_cross_impact_map = hashMapOf(
     Pair(SO2, so2_gas_cross_impact_map),
     Pair(CO, co_gas_cross_impact_map),
     Pair(H2S, h2s_gas_cross_impact_map),
-    Pair(CL2, cl2_gas_cross_impact_map),
+//    Pair(CL2, cl2_gas_cross_impact_map),
     Pair(NH3, nh3_gas_cross_impact_map),
     Pair(NO, no_gas_cross_impact_map),
 )
diff --git a/app/src/main/java/com/yinuo/safetywatcher/watcher/port/GasPortUtils.kt b/app/src/main/java/com/yinuo/safetywatcher/watcher/port/GasPortUtils.kt
index 92c40b3..ef9bf88 100644
--- a/app/src/main/java/com/yinuo/safetywatcher/watcher/port/GasPortUtils.kt
+++ b/app/src/main/java/com/yinuo/safetywatcher/watcher/port/GasPortUtils.kt
@@ -20,6 +20,8 @@ object GasPortUtils {
     private var toDoCmdList: ArrayList<ByteArray> = ArrayList()
     private val listeners: ArrayList<(ByteArray) -> Unit> = ArrayList()
     private val switchStatus = booleanArrayOf(true, true, true, true, true)
+    private var initTime = 0L
+    private var afterDelay = false
 
     fun setSwitch(index: Int, status: Boolean) {
         switchStatus[index] = status
@@ -39,6 +41,8 @@ object GasPortUtils {
     }
 
     fun initPort() {
+        initTime = System.currentTimeMillis()
+        afterDelay = false
         openPorts()
         readGasMsg()
         TxtOverlay.startShow(null)
@@ -141,4 +145,15 @@ object GasPortUtils {
             toDoCmdList.add(buildSensorRangeCmd(index, value))
         }
     }
+
+    /**
+     * 是否初始化超过20s
+     */
+    fun isInitOver20Second(): Boolean {
+        if (afterDelay || System.currentTimeMillis() - initTime > 20000) {
+            afterDelay = true
+            return true
+        }
+        return false
+    }
 }
\ No newline at end of file
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 3d7312c..c780604 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
@@ -117,6 +117,9 @@ object ParseHelper {
             c18.plus(c17).plus(java.lang.Long.toBinaryString(valueHexLong)).toInt(2) / 10f.pow(
                 pointNum
             )
+        if (!GasPortUtils.isInitOver20Second()) {
+            value = 0f
+        }
         // 量程
         val rangHex: String = HexUtils.byteArrToHex(it, 11, 11 + 2)
         val rangHexLong: Long = HexUtils.hexToLong(rangHex)