2. Product overview
2.1 Introduction to Indigo 500 Series Transmitters
Vaisala Indigo 500 Series Transmitters are industrial-grade, robust transmitters that
accommodate 1 or 2 Vaisala Indigo compatible probes for humidity, temperature, dew point,
carbon dioxide, hydrogen peroxide, and moisture in oil measurements. The transmitters can
display measurements on the spot as well as transmit them to automation systems through
analog signals, relays, or Modbus TCP/IP protocol.
The Indigo 520 transmitter has 2 probe connections and a touchscreen display.
For more information on Indigo 500 transmitter models, see www.vaisala.com/indigo.
2.1.1 Probe compatibility
Vaisala Indigo 500 Series Transmitters are the most versatile option for use with Indigo
compatible smart probes such as:
• Humidity and temperature probes: HMP3, HMP4, HMP5, HMP7, HMP8, HMP9, and TMP1
• Dew point probes: DMP5, DMP6, DMP7, DMP8
• CO
2
probes: GMP251, GMP252
• Vaporized hydrogen peroxide probes: HPP271, HPP272
• MMP8 moisture in oil probe
2.2
Indigo 520 basic features and options
• Universal transmitter for Vaisala Indigo compatible probes
• Supports 2 detachable probes simultaneously
• Touchscreen display for real-time data viewing and configuration
• IP66 and NEMA 4 rated metal enclosure
• 4 configurable analog outputs (not available with PoE option)
• 2 configurable relays (not available with PoE option)
• Ethernet connection with web interface for remote access
• Modbus TCP/IP protocol
• Installation options:
• Wall mounting
• Wall mounting with adapter plate (retrofit to replace Vaisala 330 series transmitters
such as HMT330)
• DIN rail with adapter
• Pole mounting
• Power supply options:
• Protective extra-low voltage (PELV) version: 15 … 35 VDC, 24 VAC ±20 %
• AC (mains) power version: 100 … 240 VAC 50/60 Hz
• Power over Ethernet (PoE) version: 50 VDC PoE+, IEEE 802.3at PD
Chapter 2 – Product overview
9
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