2. Product overview
2.1 Introduction to HMT370EX series
Vaisala HUMICAP® Humidity and Temperature Transmitter Series HMT370EX is the ideal
solution for measuring humidity in hazardous areas. Intrinsically safe and robust, HMT370EX
operates safely and reliably even in the most hazardous areas, such as Zone 0. HMT370EX
transmitters can be used as a replacement for the long-running HMT360 transmitter series in
all HMT360 applications.
HMT370EX can be installed directly in explosive areas. It can withstand continuous exposure to
potentially explosive environments that contain flammable gases or dust, and requires no
additional protective enclosures for operation in either gas or dust environments.
HMT370EX oers several probe options for dierent applications. Thanks to the detachable
probe module, probes can be easily replaced and removed for calibration outside the
hazardous area without removing the entire transmitter.
The transmitter has 2 analog current output channels (4 – 20 mA) for connection via safety
barriers. For easy-to-use access to configuration, diagnostics, and calibration and adjustment
functionalities, the probe and transmitter body can be connected to Vaisala Insight PC
software for configuration either together as one unit or separately.
2.2
Basic features and options
• Available measurement parameters: relative humidity (RH) and temperature (T)
• For a list of calculated measurement parameters, see Available measurement
parameters (page 12).
• Ex classification: IECEx, ATEX, CML,NEPSI, KCs, FM, MET, and UKEX certified for use in
Zone 0 and Zone 20 environments: for full Ex classifications, see the region-specific
information in Regional safety certification overview (page 19).
• 2 analog outputs (4 – 20 mA, scalable, isolated)
• Display options: graphical LCD display or non-display model
• Power supply input: 12 – 28 V
• Compatible with Vaisala Insight PC software
2.3
Hazardous area safety
Do not install or use HMT370EX in a hazardous area before
reviewing the safety information relevant to your region: see Regional safety
certification overview (page 19).
CAUTION!
Chapter 2 – Product overview
11
To Next Page
Loading...
