diff --git a/app/.gitignore b/app/.gitignore
index 956c004..feae677 100644
--- a/app/.gitignore
+++ b/app/.gitignore
@@ -1,2 +1,3 @@
 /build
-/release
\ No newline at end of file
+/release
+/old
\ No newline at end of file

diff --git a/app/.gitignore b/app/.gitignore
index 956c004..feae677 100644
--- a/app/.gitignore
+++ b/app/.gitignore
@@ -1,2 +1,3 @@
 /build
-/release
\ No newline at end of file
+/release
+/old
\ No newline at end of file
diff --git a/app/build.gradle b/app/build.gradle
index b5ad31e..93ab834 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -18,8 +18,8 @@
         applicationId "com.casic.app.safetreecontroller"
         minSdkVersion 23
         targetSdkVersion 33
-        versionCode 1000
-        versionName "1.0.0.0"
+        versionCode 1001
+        versionName "1.0.0.1"
         ndk {
             abiFilters "arm64-v8a", "armeabi-v7a", "x86_64", "x86"
         }

diff --git a/app/.gitignore b/app/.gitignore
index 956c004..feae677 100644
--- a/app/.gitignore
+++ b/app/.gitignore
@@ -1,2 +1,3 @@
 /build
-/release
\ No newline at end of file
+/release
+/old
\ No newline at end of file
diff --git a/app/build.gradle b/app/build.gradle
index b5ad31e..93ab834 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -18,8 +18,8 @@
         applicationId "com.casic.app.safetreecontroller"
         minSdkVersion 23
         targetSdkVersion 33
-        versionCode 1000
-        versionName "1.0.0.0"
+        versionCode 1001
+        versionName "1.0.0.1"
         ndk {
             abiFilters "arm64-v8a", "armeabi-v7a", "x86_64", "x86"
         }
diff --git a/app/src/main/java/com/casic/app/safetreecontroller/extensions/LineChart.kt b/app/src/main/java/com/casic/app/safetreecontroller/extensions/LineChart.kt
index bb3bb5b..4d3f9c1 100644
--- a/app/src/main/java/com/casic/app/safetreecontroller/extensions/LineChart.kt
+++ b/app/src/main/java/com/casic/app/safetreecontroller/extensions/LineChart.kt
@@ -32,8 +32,8 @@
     this.axisLeft.setDrawGridLines(false) //设置x轴上每个点对应的线
     this.axisLeft.setDrawZeroLine(true)
     //添加限制线
-    val threshold = SaveKeyValues.getValue(LocaleConstant.METHANE_DEFAULT_VALUE_KEY, 0.1)
-    val limitLine = LimitLine(threshold.toString().toFloat(), "阈值：${threshold}%VOL")
+    val threshold = SaveKeyValues.getValue(LocaleConstant.METHANE_DEFAULT_VALUE_KEY, 2)
+    val limitLine = LimitLine(threshold.toString().toFloat(), "阈值：${threshold}%LEL")
     limitLine.lineWidth = 1f
     limitLine.lineColor = Color.RED
     //允许在虚线模式下绘制(线段长度，分隔长度，偏移量)

diff --git a/app/.gitignore b/app/.gitignore
index 956c004..feae677 100644
--- a/app/.gitignore
+++ b/app/.gitignore
@@ -1,2 +1,3 @@
 /build
-/release
\ No newline at end of file
+/release
+/old
\ No newline at end of file
diff --git a/app/build.gradle b/app/build.gradle
index b5ad31e..93ab834 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -18,8 +18,8 @@
         applicationId "com.casic.app.safetreecontroller"
         minSdkVersion 23
         targetSdkVersion 33
-        versionCode 1000
-        versionName "1.0.0.0"
+        versionCode 1001
+        versionName "1.0.0.1"
         ndk {
             abiFilters "arm64-v8a", "armeabi-v7a", "x86_64", "x86"
         }
diff --git a/app/src/main/java/com/casic/app/safetreecontroller/extensions/LineChart.kt b/app/src/main/java/com/casic/app/safetreecontroller/extensions/LineChart.kt
index bb3bb5b..4d3f9c1 100644
--- a/app/src/main/java/com/casic/app/safetreecontroller/extensions/LineChart.kt
+++ b/app/src/main/java/com/casic/app/safetreecontroller/extensions/LineChart.kt
@@ -32,8 +32,8 @@
     this.axisLeft.setDrawGridLines(false) //设置x轴上每个点对应的线
     this.axisLeft.setDrawZeroLine(true)
     //添加限制线
-    val threshold = SaveKeyValues.getValue(LocaleConstant.METHANE_DEFAULT_VALUE_KEY, 0.1)
-    val limitLine = LimitLine(threshold.toString().toFloat(), "阈值：${threshold}%VOL")
+    val threshold = SaveKeyValues.getValue(LocaleConstant.METHANE_DEFAULT_VALUE_KEY, 2)
+    val limitLine = LimitLine(threshold.toString().toFloat(), "阈值：${threshold}%LEL")
     limitLine.lineWidth = 1f
     limitLine.lineColor = Color.RED
     //允许在虚线模式下绘制(线段长度，分隔长度，偏移量)
diff --git a/app/src/main/java/com/casic/app/safetreecontroller/fragments/MethaneMonitorFragment.kt b/app/src/main/java/com/casic/app/safetreecontroller/fragments/MethaneMonitorFragment.kt
index 1889d9b..0bfdbb9 100644
--- a/app/src/main/java/com/casic/app/safetreecontroller/fragments/MethaneMonitorFragment.kt
+++ b/app/src/main/java/com/casic/app/safetreecontroller/fragments/MethaneMonitorFragment.kt
@@ -121,8 +121,8 @@
         binding.updateThresholdButton.setOnClickListener {
             //更新甲烷阈值
             val threshold = binding.thresholdView.text.toString().toFloat()
-            if (threshold > 10f) {
-                "报警阈值不能超过10%VOL".show(requireContext())
+            if (threshold >= 200f) {
+                "报警阈值不能超过200%LEL".show(requireContext())
                 return@setOnClickListener
             }
 
@@ -187,10 +187,10 @@
 
             LocaleConstant.QUERY_METHANE_RESPONSE_CODE -> {
                 val ppm = msg.obj as Long
-                //通常，对于气体在空气中的浓度，我们可以认为10000ppm大约等于1%VOL
-                val formatValue = "%.2f".format(ppm / 10000f)
-                binding.currentGasValueView.text = "当前燃气浓度：${formatValue}%VOL"
-                if (ppm > binding.thresholdView.text.toString().toFloat() * 10000) {
+                //通常，对于气体在空气中的浓度，我们可以认为100000ppm大约等于200%LEL
+                val formatValue = "%.2f".format(ppm / 500f)
+                binding.currentGasValueView.text = "当前燃气浓度：${formatValue}%LEL"
+                if (ppm > binding.thresholdView.text.toString().toFloat() * 500) {
                     binding.currentGasValueView.setTextColor(Color.RED)
                     binding.currentGasValueView.typeface = Typeface.DEFAULT_BOLD
                 } else {

diff --git a/app/.gitignore b/app/.gitignore
index 956c004..feae677 100644
--- a/app/.gitignore
+++ b/app/.gitignore
@@ -1,2 +1,3 @@
 /build
-/release
\ No newline at end of file
+/release
+/old
\ No newline at end of file
diff --git a/app/build.gradle b/app/build.gradle
index b5ad31e..93ab834 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -18,8 +18,8 @@
         applicationId "com.casic.app.safetreecontroller"
         minSdkVersion 23
         targetSdkVersion 33
-        versionCode 1000
-        versionName "1.0.0.0"
+        versionCode 1001
+        versionName "1.0.0.1"
         ndk {
             abiFilters "arm64-v8a", "armeabi-v7a", "x86_64", "x86"
         }
diff --git a/app/src/main/java/com/casic/app/safetreecontroller/extensions/LineChart.kt b/app/src/main/java/com/casic/app/safetreecontroller/extensions/LineChart.kt
index bb3bb5b..4d3f9c1 100644
--- a/app/src/main/java/com/casic/app/safetreecontroller/extensions/LineChart.kt
+++ b/app/src/main/java/com/casic/app/safetreecontroller/extensions/LineChart.kt
@@ -32,8 +32,8 @@
     this.axisLeft.setDrawGridLines(false) //设置x轴上每个点对应的线
     this.axisLeft.setDrawZeroLine(true)
     //添加限制线
-    val threshold = SaveKeyValues.getValue(LocaleConstant.METHANE_DEFAULT_VALUE_KEY, 0.1)
-    val limitLine = LimitLine(threshold.toString().toFloat(), "阈值：${threshold}%VOL")
+    val threshold = SaveKeyValues.getValue(LocaleConstant.METHANE_DEFAULT_VALUE_KEY, 2)
+    val limitLine = LimitLine(threshold.toString().toFloat(), "阈值：${threshold}%LEL")
     limitLine.lineWidth = 1f
     limitLine.lineColor = Color.RED
     //允许在虚线模式下绘制(线段长度，分隔长度，偏移量)
diff --git a/app/src/main/java/com/casic/app/safetreecontroller/fragments/MethaneMonitorFragment.kt b/app/src/main/java/com/casic/app/safetreecontroller/fragments/MethaneMonitorFragment.kt
index 1889d9b..0bfdbb9 100644
--- a/app/src/main/java/com/casic/app/safetreecontroller/fragments/MethaneMonitorFragment.kt
+++ b/app/src/main/java/com/casic/app/safetreecontroller/fragments/MethaneMonitorFragment.kt
@@ -121,8 +121,8 @@
         binding.updateThresholdButton.setOnClickListener {
             //更新甲烷阈值
             val threshold = binding.thresholdView.text.toString().toFloat()
-            if (threshold > 10f) {
-                "报警阈值不能超过10%VOL".show(requireContext())
+            if (threshold >= 200f) {
+                "报警阈值不能超过200%LEL".show(requireContext())
                 return@setOnClickListener
             }
 
@@ -187,10 +187,10 @@
 
             LocaleConstant.QUERY_METHANE_RESPONSE_CODE -> {
                 val ppm = msg.obj as Long
-                //通常，对于气体在空气中的浓度，我们可以认为10000ppm大约等于1%VOL
-                val formatValue = "%.2f".format(ppm / 10000f)
-                binding.currentGasValueView.text = "当前燃气浓度：${formatValue}%VOL"
-                if (ppm > binding.thresholdView.text.toString().toFloat() * 10000) {
+                //通常，对于气体在空气中的浓度，我们可以认为100000ppm大约等于200%LEL
+                val formatValue = "%.2f".format(ppm / 500f)
+                binding.currentGasValueView.text = "当前燃气浓度：${formatValue}%LEL"
+                if (ppm > binding.thresholdView.text.toString().toFloat() * 500) {
                     binding.currentGasValueView.setTextColor(Color.RED)
                     binding.currentGasValueView.typeface = Typeface.DEFAULT_BOLD
                 } else {
diff --git a/app/src/main/res/layout/fragment_base_settings.xml b/app/src/main/res/layout/fragment_base_settings.xml
index a8dd188..3ecf7f5 100644
--- a/app/src/main/res/layout/fragment_base_settings.xml
+++ b/app/src/main/res/layout/fragment_base_settings.xml
@@ -177,7 +177,6 @@
                 android:inputType="textPassword"
                 android:padding="@dimen/dp_5"
                 android:singleLine="true"
-                android:text="zhsz20311hw"
                 android:textColor="@color/black"
                 android:textSize="@dimen/sp_16" />
         </LinearLayout>

diff --git a/app/.gitignore b/app/.gitignore
index 956c004..feae677 100644
--- a/app/.gitignore
+++ b/app/.gitignore
@@ -1,2 +1,3 @@
 /build
-/release
\ No newline at end of file
+/release
+/old
\ No newline at end of file
diff --git a/app/build.gradle b/app/build.gradle
index b5ad31e..93ab834 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -18,8 +18,8 @@
         applicationId "com.casic.app.safetreecontroller"
         minSdkVersion 23
         targetSdkVersion 33
-        versionCode 1000
-        versionName "1.0.0.0"
+        versionCode 1001
+        versionName "1.0.0.1"
         ndk {
             abiFilters "arm64-v8a", "armeabi-v7a", "x86_64", "x86"
         }
diff --git a/app/src/main/java/com/casic/app/safetreecontroller/extensions/LineChart.kt b/app/src/main/java/com/casic/app/safetreecontroller/extensions/LineChart.kt
index bb3bb5b..4d3f9c1 100644
--- a/app/src/main/java/com/casic/app/safetreecontroller/extensions/LineChart.kt
+++ b/app/src/main/java/com/casic/app/safetreecontroller/extensions/LineChart.kt
@@ -32,8 +32,8 @@
     this.axisLeft.setDrawGridLines(false) //设置x轴上每个点对应的线
     this.axisLeft.setDrawZeroLine(true)
     //添加限制线
-    val threshold = SaveKeyValues.getValue(LocaleConstant.METHANE_DEFAULT_VALUE_KEY, 0.1)
-    val limitLine = LimitLine(threshold.toString().toFloat(), "阈值：${threshold}%VOL")
+    val threshold = SaveKeyValues.getValue(LocaleConstant.METHANE_DEFAULT_VALUE_KEY, 2)
+    val limitLine = LimitLine(threshold.toString().toFloat(), "阈值：${threshold}%LEL")
     limitLine.lineWidth = 1f
     limitLine.lineColor = Color.RED
     //允许在虚线模式下绘制(线段长度，分隔长度，偏移量)
diff --git a/app/src/main/java/com/casic/app/safetreecontroller/fragments/MethaneMonitorFragment.kt b/app/src/main/java/com/casic/app/safetreecontroller/fragments/MethaneMonitorFragment.kt
index 1889d9b..0bfdbb9 100644
--- a/app/src/main/java/com/casic/app/safetreecontroller/fragments/MethaneMonitorFragment.kt
+++ b/app/src/main/java/com/casic/app/safetreecontroller/fragments/MethaneMonitorFragment.kt
@@ -121,8 +121,8 @@
         binding.updateThresholdButton.setOnClickListener {
             //更新甲烷阈值
             val threshold = binding.thresholdView.text.toString().toFloat()
-            if (threshold > 10f) {
-                "报警阈值不能超过10%VOL".show(requireContext())
+            if (threshold >= 200f) {
+                "报警阈值不能超过200%LEL".show(requireContext())
                 return@setOnClickListener
             }
 
@@ -187,10 +187,10 @@
 
             LocaleConstant.QUERY_METHANE_RESPONSE_CODE -> {
                 val ppm = msg.obj as Long
-                //通常，对于气体在空气中的浓度，我们可以认为10000ppm大约等于1%VOL
-                val formatValue = "%.2f".format(ppm / 10000f)
-                binding.currentGasValueView.text = "当前燃气浓度：${formatValue}%VOL"
-                if (ppm > binding.thresholdView.text.toString().toFloat() * 10000) {
+                //通常，对于气体在空气中的浓度，我们可以认为100000ppm大约等于200%LEL
+                val formatValue = "%.2f".format(ppm / 500f)
+                binding.currentGasValueView.text = "当前燃气浓度：${formatValue}%LEL"
+                if (ppm > binding.thresholdView.text.toString().toFloat() * 500) {
                     binding.currentGasValueView.setTextColor(Color.RED)
                     binding.currentGasValueView.typeface = Typeface.DEFAULT_BOLD
                 } else {
diff --git a/app/src/main/res/layout/fragment_base_settings.xml b/app/src/main/res/layout/fragment_base_settings.xml
index a8dd188..3ecf7f5 100644
--- a/app/src/main/res/layout/fragment_base_settings.xml
+++ b/app/src/main/res/layout/fragment_base_settings.xml
@@ -177,7 +177,6 @@
                 android:inputType="textPassword"
                 android:padding="@dimen/dp_5"
                 android:singleLine="true"
-                android:text="zhsz20311hw"
                 android:textColor="@color/black"
                 android:textSize="@dimen/sp_16" />
         </LinearLayout>
diff --git a/app/src/main/res/layout/fragment_methane_monitor.xml b/app/src/main/res/layout/fragment_methane_monitor.xml
index fd6d578..d6e0aac 100644
--- a/app/src/main/res/layout/fragment_methane_monitor.xml
+++ b/app/src/main/res/layout/fragment_methane_monitor.xml
@@ -83,7 +83,7 @@
                 android:layout_width="wrap_content"
                 android:layout_height="wrap_content"
                 android:layout_marginStart="@dimen/dp_5"
-                android:text="% VOL"
+                android:text="% LEL"
                 android:textColor="@color/black"
                 android:textSize="11sp" />