Vaisala HMP3 User Manual (English)

mark41Aug 4, 2025

Why does the measurement output seem incorrect on my Vaisala HMP3 Measuring Instruments?

S
stephenswilliamAug 4, 2025
If the measurement output of your Vaisala Measuring Instruments seems incorrect, first check the installation location. It might not be representative of the actual conditions you want to measure. If needed, relocate the probe. Also, heat conduction along the probe head and cable may interfere with measurement accuracy. Finally, the probe may need calibration and adjustment.

Protection Class	IP65
Measurement Parameters	Temperature and Humidity
Humidity Range	0 to 100 %RH
Response Time	15 s in air at 20°C, 1 m/s flow
Output Signal	4 to 20 mA
Temperature Range	-40 ... +60 °C
Temperature Accuracy	±0.2°C at 20°C

Protection Class

IP65

Measurement Parameters

Temperature and Humidity

Humidity Range

0 to 100 %RH

Response Time

15 s in air at 20°C, 1 m/s flow

Output Signal

4 to 20 mA

Temperature Range

-40 ... +60 °C

Temperature Accuracy

±0.2°C at 20°C

Summary

About this document

Version Information

Document version history for Vaisala HUMICAP probes and associated models.

Related Manuals

Lists other relevant Vaisala user guides and documentation for the probes.

Documentation Conventions

Explains symbols, warnings, and formatting conventions used throughout the guide.

Trademarks

Lists registered trademarks of Vaisala and other companies mentioned in the publication.

Product Overview

Probe Structure

Diagram and labels illustrating the physical components of the Vaisala probes.

Basic Features and Options

Highlights key features and functionalities of the humidity and temperature probes.

Output Parameters

Details available output parameters and their availability for different probe models.

Indigo 200 Series Transmitter Features

Describes additional features provided when probes are connected to Indigo transmitters.

Safety Precautions

Important safety warnings and guidelines for handling and operating the probes.

ESD Protection

Information on preventing damage to electronic circuits from electrostatic discharge.

Regulatory Compliance

Information on EU directives and standards compliance for the probes.

Installation Guide

HMP3 Probe Installation

Installation details and dimensions specific to the HMP3 humidity and temperature probe.

HMP4 Probe Installation

Installation details and dimensions specific to the HMP4 humidity and temperature probe.

HMP5 Probe Installation

Installation details and dimensions specific to the HMP5 humidity and temperature probe.

HMP7 Probe Installation

Installation details and dimensions specific to the HMP7 humidity and temperature probe.

HMP8 Probe Installation

Installation details and dimensions specific to the HMP8 humidity and temperature probe.

HMP9 Probe Installation

Installation details and dimensions specific to the HMP9 humidity and temperature probe.

MMP8 Probe Installation

Installation details and dimensions specific to the MMP8 moisture in oil probe.

TMP1 Probe Installation

Installation details and dimensions specific to the TMP1 temperature probe.

Wiring and Connections

Details on probe connector pinouts and RS-485 wiring configurations.

Configuration with Insight Software

Vaisala Insight Software Overview

Introduction to the Insight software for probe configuration and data management.

USB Service Cable Driver Installation

Steps to install the necessary driver for the USB service cable on Windows.

Connecting to Insight Software

Procedure for connecting the probe to the Insight software via USB.

Insight Configuration Options

Overview of available settings and options for configuring probes within Insight.

Using with Indigo Transmitters

Indigo 200 Transmitter Overview

Description of the Indigo 200 series transmitter and its key components.

Attaching Probe to Indigo Transmitter

Step-by-step guide for physically connecting a probe to an Indigo 200 transmitter.

Wireless Configuration Interface

Explanation of the wireless interface for configuring Indigo transmitters and probes.

Connecting to Wireless Interface

Guide to establishing a wireless connection to the Indigo transmitter.

Logging into Wireless Interface

Instructions for logging into the wireless interface with user and admin levels.

Maintenance Procedures

Cleaning the Probe

Guidelines for cleaning the probe, probe body, and cable safely and effectively.

Changing the Probe Filter

Procedure for safely removing and replacing the probe filter.

Replacing HUMICAP R2 Sensor

Detailed procedure for replacing a damaged HUMICAP R2 humidity sensor.

Calibration and Adjustment

Explanation of calibration concepts and when probe measurement adjustment is needed.

Adjusting Measurement via Insight

Step-by-step guide for adjusting probe measurements using Insight software.

Adjusting Measurement via Indigo Transmitter

Procedure for adjusting probe measurements using the Indigo 200 transmitter interface.

Troubleshooting Guide

Problem Situations

Table listing common problems, their possible causes, and recommended solutions.