Rotronic HM4 Uživatelský manuál stáhnout pdf (Strana 7)

E-M-HM4-V0_08

ROTRONIC AG

Bassersdorf, Switzerland

Document Code

Unit

HM4 Humidity and Temperature Probe with

Heated Sensor

Instruction Manual

Document Type

Page

7 of 41

Document Title

3 General

3.1 Power Supply

The HM4 requires a power supply of 15...24 VDC (55 mA) for full functionality, but may already be operated on

5 VDC with the following restrictions:

Analog output only 0...1 V

RoHumiClean

function only available to a limited extent (see chapter 4.1.6)

Detailed Power Supply Specifications:

Operating State

Current Consumption

5 VDC, without heater

<35 mA

5 VDC, with heater

<55 mA

24 VDC, without heater

<20 mA

24 VDC, with heater

<30 mA

3.2 Measured Parameters

The HM4 measures relative humidity and temperature. The heated SMD humidity sensor allows simultaneous

heating and measurement. The temperature is measured at the tip of the probe by an external Pt100 sensor.

DRAFT

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Rotronic HM4 Uživatelský manuál Strana 7