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Vaisala DMT152 User Manual

Vaisala DMT152
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USER'S GUIDE
Vaisala DRYCAP
®
Dewpoint Transmitter
DMT152
M210865EN-H

Table of Contents

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Vaisala DMT152 Specifications

General IconGeneral
Measurement Range, Humidity0 to 100 %RH
Output Signal0 to 1 V, 0 to 10 V, 4 to 20 mA
IP RatingIP65
Accuracy, Temperature±0.2 °C
Operating Temperature-40 to +60 °C
Storage Temperature-40 to +70 °C
Measurement Range, Temperature-40 ... +60 °C
Power Supply10 to 35 VDC
Housing MaterialPlastic (PC-ABS)

Summary

Chapter 1 General Information

Safety, ESD Protection, and Recycling

Covers safety precautions, electrostatic discharge protection, and disposal instructions.

Chapter 3 Functional Description

Advanced DRYCAP® Technology

Describes the patented technology ensuring accuracy, stability, and low maintenance.

Auto-Calibration

Explains the automatic procedure to reduce dewpoint measurement drift.

Sensor Purge

Details the automatic procedure to minimize drift at the wet end readings.

Chapter 4 Installation

Installing the Transmitter

Step-by-step instructions for physically installing the DMT152 unit.

Chapter 5 Serial Line Operation

Serial Communication and Setup

Connecting to PC via serial/USB, driver installation, and terminal settings.

Analog Output Configuration

Setting up analog outputs, alarms, and scaling for measurement signals.

Serial Line Configuration

Settings for serial interface, response time, address, output format, units, and mode.

Measurement Parameter Configuration

Enabling/disabling sensor purge and setting pressure/molar mass for calculations.

Chapter 6 Maintenance

Calibration and Adjustment

Information on factory calibration, recommended intervals, and field checking.

Chapter 7 Troubleshooting

Typical Problems

Overview of common issues, causes, and initial troubleshooting steps.

Chapter 8 Technical Data

Measured Variables

Details on dewpoint temperature and ppm measurement ranges and accuracies.

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