diff --git a/phosphor-regulators/src/chassis.hpp b/phosphor-regulators/src/chassis.hpp
index b0f8561..dc86ed0 100644
--- a/phosphor-regulators/src/chassis.hpp
+++ b/phosphor-regulators/src/chassis.hpp
@@ -122,7 +122,7 @@
     /**
      * Detect redundant phase faults in regulator devices in this chassis.
      *
-     * This method should be called every 15 seconds.
+     * This method should be called repeatedly based on a timer.
      *
      * @param services system services like error logging and the journal
      * @param system system that contains this chassis
@@ -166,7 +166,7 @@
      * Monitors the sensors for the voltage rails produced by this chassis, if
      * any.
      *
-     * This method should be called once per second.
+     * This method should be called repeatedly based on a timer.
      *
      * @param services system services like error logging and the journal
      * @param system system that contains the chassis
diff --git a/phosphor-regulators/src/device.hpp b/phosphor-regulators/src/device.hpp
index af0e8ec..352daeb 100644
--- a/phosphor-regulators/src/device.hpp
+++ b/phosphor-regulators/src/device.hpp
@@ -137,7 +137,7 @@
      *
      * Does nothing if phase fault detection is not defined for this device.
      *
-     * This method should be called every 15 seconds.
+     * This method should be called repeatedly based on a timer.
      *
      * @param services system services like error logging and the journal
      * @param system system that contains the chassis
@@ -255,7 +255,7 @@
      * Monitors the sensors for the voltage rails produced by this device, if
      * any.
      *
-     * This method should be called once per second.
+     * This method should be called repeatedly based on a timer.
      *
      * @param services system services like error logging and the journal
      * @param system system that contains the chassis
diff --git a/phosphor-regulators/src/phase_fault_detection.hpp b/phosphor-regulators/src/phase_fault_detection.hpp
index 876d90e..6a84102 100644
--- a/phosphor-regulators/src/phase_fault_detection.hpp
+++ b/phosphor-regulators/src/phase_fault_detection.hpp
@@ -51,9 +51,9 @@
  * hardware.  Often a bit is checked in a status register.  The status register
  * could exist in the regulator or in a related I/O expander.
  *
- * Phase fault detection is performed every 15 seconds.  A phase fault must be
- * detected two consecutive times (15 seconds apart) before an error is logged.
- * This provides "de-glitching" to ignore transient hardware problems.
+ * Phase fault detection is executed repeatedly based on a timer.  A phase fault
+ * must be detected two consecutive times before an error is logged.  This
+ * provides "de-glitching" to ignore transient hardware problems.
  *
  * Phase faults are detected by executing actions.
  */
diff --git a/phosphor-regulators/src/rail.hpp b/phosphor-regulators/src/rail.hpp
index 5591c36..63d80eb 100644
--- a/phosphor-regulators/src/rail.hpp
+++ b/phosphor-regulators/src/rail.hpp
@@ -119,7 +119,7 @@
      * Sensor monitoring is optional.  If sensor monitoring is defined for this
      * rail, the sensor values are read.
      *
-     * This method should be called once per second.
+     * This method should be called repeatedly based on a timer.
      *
      * @param services system services like error logging and the journal
      * @param system system that contains the chassis
diff --git a/phosphor-regulators/src/sensor_monitoring.hpp b/phosphor-regulators/src/sensor_monitoring.hpp
index 00823af..fcb02a5 100644
--- a/phosphor-regulators/src/sensor_monitoring.hpp
+++ b/phosphor-regulators/src/sensor_monitoring.hpp
@@ -40,8 +40,8 @@
  *
  * Sensor values are measured, actual values rather than target values.
  *
- * Sensors are read once per second.  The sensor values are stored on D-Bus,
- * making them available to external interfaces like Redfish.
+ * Sensors are read repeatedly based on a timer.  The sensor values are stored
+ * on D-Bus, making them available to external interfaces like Redfish.
  *
  * Sensors are read by executing actions, such as PMBusReadSensorAction.  To
  * read multiple sensors for a rail, multiple actions need to be executed.
diff --git a/phosphor-regulators/src/system.hpp b/phosphor-regulators/src/system.hpp
index caa3804..accd7f0 100644
--- a/phosphor-regulators/src/system.hpp
+++ b/phosphor-regulators/src/system.hpp
@@ -95,7 +95,7 @@
     /**
      * Detect redundant phase faults in regulator devices in the system.
      *
-     * This method should be called every 15 seconds.
+     * This method should be called repeatedly based on a timer.
      *
      * @param services system services like error logging and the journal
      */
@@ -138,7 +138,7 @@
      * Monitors the sensors for the voltage rails produced by this system, if
      * any.
      *
-     * This method should be called once per second.
+     * This method should be called repeatedly based on a timer.
      *
      * @param services system services like error logging and the journal
      */