Environment - I2C Honeywell Pressure

I2C Honeywell Pressure

Plugin details

Type: Environment

Name: I2C Honeywell Pressure

Status: COLLECTION F CLIMATE

GitHub: P151_Honeywell_pressure.ino

Maintainer: TD-er

Used libraries: .

Description

The Honeywell TruStability™ HSC Series are calibrated pressure sensors with internal temperature compensation. This series has a lot of versions of pressure sensors ranging in form factor, pressure range, etc.

Hardware

See the datasheet for all versions.

  • Page 13 is a must to help decode the nomenclature of the model numbers.

  • Pages 17 - 29 are about the various form factors of these sensors.

The digital versions of these sensors typically output a 14 bit value ranging from 0 … 16383.

The usable (and compensated) range is typically 10% - 90% of the full range. These 10% and 90% points are also the specified range of the sensor.

For example, a differential sensor ranging -1 … 1 bar, will output:

  • 1638 = -1 bar

  • 14746 = 1 bar

In practice, the sensor can measure from 2.5% upto 97.5% of the full range before it will start clipping.

Configuration

  • Name: Required by ESPEasy, must be unique among the list of available devices/tasks.

  • Enabled: The device can be disabled or enabled. When not enabled the device should not use any resources.

Device Settings

Sensor Output Min and Max must be set to resp. 10% and 90% of the digital count range.

  • Sensor Output Min Default to 1638 (10% of 2^14)

  • Sensor Output Max Default to 14745 (90% of 2^14)

  • Pressure Min Minimal stated pressure for the given sensor.

  • Pressure Max Maximal stated pressure for the given sensor.

For example, given the HCSMANV001BA2A3 sensor:

  • M SMT

  • AN Single Axial barbed port

  • V Liquid Media port 1, diagnostics on

  • 001BA 0 bar to 1 bar

  • 2 I2C address 0x28

  • A 10% to 90% 2^14 digital

  • 3 3V3

The measurement range for this sensor is 0 … 1 bar. This means the Pressure Min and Pressure Max should be set to resp. 0 and 1. However, if the pressure in some container needs to be compared to some outside pressure, measured by for example a Bosch BMP280, it might be useful to directly output to mbar. Thus for this purpose the Pressure Max should be set to 1000.

Device configuration

Change log

Changed in version 2.0: …

added 2023-04-12 Initial release version.