Interaction between the HF5 and probe functions

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Interaction between the HF5 and probe functions

It is important to note that when used together, the HF5 transmitter and HygroClip2 Advanced (HC2A) probe constitute a 2-component system. Each system component has its own microprocessor, firmware and functions. Some of these functions are unique to each system component. Other functions are found in both components.

 

HF52 (2-wire, loop powered transmitter): due to the necessity of limiting the current consumption of the combination of HF52 and HC2A probe to less than 4 mA, several probe functions such as RH sensor test, data recording and probe adjustment are not available with the HF52.

 

The functions and settings of the HF5 transmitter and HC2A operate together as indicated below:

 

Function / Setting

HF5

HC2A

Notes

Device protection

X

X

Individual to the HF5 and HC2A probe.

RS-485 address

X

X

Individual to the HF5 and HC2A probe.

Device Name

X

X

User defined description

The device name of the HC2A probe is not displayed by HygroSoft and is replaced with the HF5 Input Name.

Calculation

X

X

Psychrometric calculation.

HF5 setting overrides HC2A probe setting.

Data refresh rate

X

 

Depending on the model, the data refresh rate is as follows:

 

HF52: typically 20 s

Other models: typically 1 s

Simulator function

X

X

Generates fixed humidity and / or temperature value.

When enabled, the HF5 settings override the HC2A probe settings.

Unit system

X

X

The HF5 setting overrides HC2A probe setting regarding the HF5 signals. The HC2A probe settings still apply when the probe is used alone.

 

Make sure to use the same humidity symbol and the same temperature unit for both the HF5 and probe.

Out-of-limits value alarm

X

X

The HF5 settings are independent from the HC2A probe settings.

 

The HC2 probe settings have an effect only when the HF5 is enabled to monitor alarms generated by the probe.

 

When out-of-limit values have been defined for the same parameter for both the HF5 and probe, any alarm is triggered based on the narrowest set of limits (assuming that the HF5 has been set to monitor probe alarms).

Analog outputs

X

X

Parameter and scale

The HC2A probe settings have no effect on the HF5