Vaisala Indigo 202 User Manual

M211966EN-A
User Guide
Indigo
™
20
2 Digital Transmitter
Indigo 202

Vaisala Indigo 202 Specifications

General

Humidity Measurement Range	0 to 100 %RH
Weight	Approx. 300 g
IP rating	IP65
Protection Class	IP65
Measurement Parameters	Temperature, Humidity
Temperature Accuracy	±0.1 °C at 20 °C
Humidity Accuracy	±0.8 %RH (depending on probe)
Display	LCD
Outputs	Analog outputs
Operating Humidity	0 to 100 %RH
Communication	Modbus RTU, RS-485
Temperature Measurement Range	-40 to +60 °C

Summary

About This Document

Document Information

Provides details on document version, related manuals, conventions, and trademarks.

Product Overview

Introduction to Indigo™ Transmitters

Overview of Vaisala Indigo transmitters and their purpose.

Indigo 202 Key Features

Lists the main features and options of the Indigo 202 transmitter.

Transmitter Components

Identifies and describes the physical parts of the Indigo transmitter.

Indigo Display Functionality

Describes display functionality and graph mode.

Wireless Configuration Interface

Introduction to the browser-based wireless interface for configuration.

Installation

Physical Installation Procedures

Instructions for mounting, connecting cables, and wiring the transmitter.

Probe and Cable Attachment

Guide to connecting Vaisala probes and their cables to the transmitter.

Input/Output Specifications

Technical specifications for the transmitter's input and output capabilities.

DIP Switch Settings

Configuration options for WLAN and RS-485 termination using DIP switches.

Wireless Configuration Interface

Connecting to the Interface

Steps for establishing a wireless connection via computer or mobile device.

User Login and Access Management

User login procedures, password management, and user level control.

Measurements and Status Views

Displaying measurement data and monitoring transmitter status.

General Device Settings

Accessing and configuring general device settings like WLAN and display.

Modbus Communication Settings

Configuring Modbus RTU serial communication parameters.

Relay Settings

Configuration options for controlling the transmitter's relays.

Probe Settings

Probe-specific configuration options and environmental compensations.

Modbus

Modbus Overview

Introduction to the Modbus RTU serial communication protocol.

Default Communication Settings

Default serial communication settings for Modbus.

Configuring Relays

Relay Configuration Overview

General overview of relay configuration options and parameters.

Setting Relay Activation Limit Without Hysteresis

Configuring relay activation based on a single setpoint without hysteresis.

Setting Relay Activation Limit Using Hysteresis

Configuring relay activation with hysteresis for stable switching.

Selecting Relay Error State

Defining relay behavior when an error state occurs.

Calibration and Adjustment

Calibration Overview

General process for calibrating and adjusting the probe measurement.

Environmental Compensation

Compensating probe measurements for environmental factors.

Measurement and Diagnostics Tabs

Viewing current measurements and diagnostic codes.

Probe Configuration and Examples

Probe-specific configuration and calibration examples.

Maintenance and Troubleshooting

Cleaning Procedures

Instructions for cleaning the Indigo transmitter body.

Wireless Connection Troubleshooting

Resolving issues related to connecting to the wireless interface.

Connecting with iPhone

Guide to connecting the Indigo transmitter using an iPhone.

Display Messages

Explanation of messages shown on the transmitter display.

Technical Data

Specifications Overview

Detailed technical specifications for input, output, and general properties.

Spare Parts and Accessories

Information on ordering spare parts and compatible accessories.

Dimensions

Physical dimensions of the Indigo transmitter in millimeters.

Appendix A. Modbus Reference

Function Codes and Device Identification

Supported Modbus function codes and device identification objects.

Indigo Status Registers

Description of status registers and notification/error bits.

EU Declaration of Conformity

Warranty

Technical Support

Recycling