Flow rate reported value in Zigbee_Pressure_Flow_Sensor.ino #11493
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jacksonwill0
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Hi all, I have been setting up an project to read a flow sensor for water usage tracking. And I am quite happy how easy this library works for users who rarely programming in C! I am using an XIAO ESP32C6 an the following example: libraries/Zigbee/examples/Zigbee_Pressure_Flow_Sensor/Zigbee_Pressure_Flow_Sensor.ino In this example it is always stated that the reported value is in 0,1m3/h which is unclear for me, why this conversion is made. |
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Answered by
P-R-O-C-H-Y
Jul 2, 2025
Replies: 4 comments 6 replies
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Hi @jacksonwill0, Also the value must be in m3/h. You can later in HA select other unit of measurement. That conversion is done in HA directly. 
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so this means, that using smaller sensors which are sensing less flow are not compatible. Thanks for the response! |
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@jacksonwill0 In that case I will suggest you to use the Analog cluster adding an analog Input :) You can set the application type to to some FLOW type, which uses Liters per Second /** @brief Values for 'Flow in Liters per Second' type of Analog Input cluster */
typedef enum {
ESP_ZB_ZCL_AI_FLOW_CHILLED_WATER = ESP_ZB_ZCL_AI_SET_APP_TYPE_WITH_ID(ESP_ZB_ZCL_AI_APP_TYPE_FLOW, 0x0000), /*!< Chilled water */
ESP_ZB_ZCL_AI_FLOW_CHILLER_CHILLED_WATER, /*!< Chiller chilled water */
ESP_ZB_ZCL_AI_FLOW_CHILLER_CONDENSER_WATER, /*!< Chiller condenser water */
ESP_ZB_ZCL_AI_FLOW_COLD_DECK, /*!< Cold deck */
ESP_ZB_ZCL_AI_FLOW_DECOUPLE_LOOP, /*!< Decouple loop */
ESP_ZB_ZCL_AI_FLOW_DISCHARGE, /*!< Discharge */
ESP_ZB_ZCL_AI_FLOW_EXHAUST_FAN, /*!< Exhaust fan */
ESP_ZB_ZCL_AI_FLOW_EXHAUST, /*!< Exhaust */
ESP_ZB_ZCL_AI_FLOW_FAN, /*!< Fan */
ESP_ZB_ZCL_AI_FLOW_HOT_DECK, /*!< Flow hot deck */
ESP_ZB_ZCL_AI_FLOW_HOT_WATER, /*!< Hot water */
ESP_ZB_ZCL_AI_FLOW_MIN_OUTDOOR_AIR_FAN, /*!< Min outdoor air fan */
ESP_ZB_ZCL_AI_FLOW_MIN_OUTDOOR_AIR, /*!< Min outdoor Air */
ESP_ZB_ZCL_AI_FLOW_OUTDOOR_AIR, /*!< Outdoor air */
ESP_ZB_ZCL_AI_FLOW_PRIMARY_CHILLED_WATER, /*!< Primary chilled water */
ESP_ZB_ZCL_AI_FLOW_RELIEF_FAN, /*!< Relief fan */
ESP_ZB_ZCL_AI_FLOW_RELIEF, /*!< Relief */
ESP_ZB_ZCL_AI_FLOW_RETURN_FAN, /*!< Return fan */
ESP_ZB_ZCL_AI_FLOW_RETURN, /*!< Return */
ESP_ZB_ZCL_AI_FLOW_SECONDARY_CHILLED_WATER_FLOW, /*!< Secondary chilled water flow */
ESP_ZB_ZCL_AI_FLOW_SUPPLY_FAN, /*!< Supply fan */
ESP_ZB_ZCL_AI_FLOW_TOWER_FAN, /*!< Tower fan */
/* 0x0200 to 0xfffe are Vendor defined */
ESP_ZB_ZCL_AI_FLOW_OTHER = ESP_ZB_ZCL_AI_SET_APP_TYPE_WITH_ID(ESP_ZB_ZCL_AI_APP_TYPE_FLOW, 0xffff), /*!< Other */
} esp_zb_zcl_ai_flow_in_liters_per_second_t;So it can look like this: // Set up analog input
zbAnalogDevice.addAnalogInput();
zbAnalogDevice.setAnalogInputApplication(ESP_ZB_ZCL_AI_FLOW_PRIMARY_CHILLED_WATER);
zbAnalogDevice.setAnalogInputDescription("Water flow (L/s)");
zbAnalogDevice.setAnalogInputResolution(0.001); |
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I have problems understanding, where the |
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You don't need to place the enum enywhere. It's already included in the code. You can just pick the type you want. |
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I needed to update the arduino-esp32 to v3.2.1 in order to get rid of the errors I had. |
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This is also working with Zigbee End device, right? |
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Sure. If you have battery powered ESP set the Zigbee to END DEVICE. If you have your ESP mains powered (no battery) ideally set the Zigbee to ROUTER, so it can extend and route traffic on your network. |
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Answer selected by
jacksonwill0
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@jacksonwill0 In that case I will suggest you to use the Analog cluster adding an analog Input :)
You can check the example in our repo.
You can set the application type to to some FLOW type, which uses Liters per Second