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General| Measurement Range (Humidity) | 0 ... 100 %RH |
|---|---|
| Protection Class | IP65 |
| Measurement Range (Temperature) | -40 to +60 °C |
| Accuracy (Humidity) | ±1 %RH (0 ... 90 %RH) ±1.7 %RH (90 ... 100 %RH) |
| Accuracy (Temperature) | ±0.2 °C (at 20°C) |
| Output Signal | 4 to 20 mA, RS-232, RS-485 |
| Operating Temperature | -40 to +60 °C |
| Weight | 300 g |
| Display | Optional |
Provides general notes on the manual and the product itself.
Details safety precautions, warnings, and essential safety guidelines for product operation.
Lists the EU directives and standards the product complies with for market entry.
Outlines the terms and conditions governing the use of the product's software.
Provides information on the standard warranty terms and conditions for the product.
Introduces the HMT330 transmitter, its measurement capabilities, and output options.
Highlights the key features, advantages, and available optional modules for the HMT330.
Describes the various probe types available for different applications and their specifications.
Explains how to mount the transmitter housing using various mounting plates and kits.
Details the procedures for connecting power supply and signal wires to the transmitter.
Provides guidance on correctly mounting the humidity and temperature probes for accurate measurements.
Describes the installation and functionality of optional modules like power supply, relays, and communication interfaces.
Guides the user through the initial setup and power-up procedures for the HMT330 transmitter.
Explains how to use the optional display and keypad for device configuration and monitoring.
Details the menu structure and navigation methods for accessing device settings and functions.
Describes how to configure and manage display alarms for monitoring measurement deviations.
Covers connecting and communicating with the transmitter via RS-232 or RS-485 serial interfaces.
Explains how to establish and configure Ethernet (LAN) connections for network access and control.
Provides a comprehensive list of available serial commands for controlling and configuring the transmitter.
Details advanced sensor operations like chemical purge and sensor heating for optimal performance.
Explains how to configure and utilize the relay outputs for alarm signaling or control functions.
Introduces MODBUS protocol support, variants, and connection types for the HMT330.
Guides through the configuration steps for enabling MODBUS communication over serial interfaces (RS-232/RS-485).
Explains how to enable and configure MODBUS TCP communication over Ethernet (LAN/WLAN).
Outlines routine maintenance procedures for cleaning and ensuring the longevity of the transmitter.
Provides instructions for replacing the humidity sensor and the necessary post-replacement procedures.
Describes how the transmitter indicates errors and how to interpret error messages for troubleshooting.
Explains how to access and exit the calibration and adjustment mode of the transmitter.
Details the procedures for calibrating relative humidity using push-buttons, display/keypad, or serial line.
Guides the user through the process of calibrating the temperature measurement using various methods.
Explains how to calibrate the analog output signals to ensure accurate readings.
Presents detailed technical specifications covering performance, measurement ranges, and accuracy.
Lists the electrical inputs, outputs, protocols, and interface specifications of the HMT330.
Describes the kit and procedure for installing probes in ducts and channels.
Details the Swagelok installation kit for pressure-tight applications of RH probes.
Illustrates vapor-tight installation methods using cable glands for RH probes.
Explains the installation of the HMT338 probe using a ball valve assembly in pressurized systems.
Lists and explains the MODBUS function codes supported by the HMT330 transmitter.
Details the MODBUS register map, including addresses, data formats, and descriptions of HMT330 data.
Describes the MODBUS registers that provide read-only access to measurement data.
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