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Vaisala Indigo 520 Transmitter is an industrial-grade, robust transmitter that accommodates 1 or 2 Vaisala Indigo compatible probes for humidity, temperature, dew point, carbon dioxide, hydrogen peroxide, and moisture in oil measurements. The transmitter can display measurements on the spot as well as transmit them to automation systems through analog signals, relays, or Modbus TCP/IP protocol.
Variety of Probe Options
Indigo 520 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
• CO2 probes: GMP251, GMP252
• Vaporized hydrogen peroxide probes: HPP271, HPP272
• MMP8 moisture in oil probe
The probes are interchangeable, selfcontained measurement instruments that are easily detachable from the transmitter for calibration and maintenance. The probes are connected using a cable that can be extended with a standard instrumentation cable to allow up to 30 m (98 ft) distance between the transmitter and the probe.
Analog and Digital Interfaces
The transmitter has 4 analog channels that can be configured to mA or voltage type, and 2 configurable relays. Any of the output parameters from the connected probes can be assigned to control the analog channels and relays.
The digital output protocol is Modbus TCP/IP over Ethernet.
Besides Modbus TCP/IP, the transmitter's Ethernet connection provides a web interface and cybersecurity that meets modern standards.
Robust Design
The transmitter has a wide operating temperature range, an IP66-rated
corrosion-resistant metal enclosure and a touchscreen display made of chemically strengthened (IK08) glass. The transmitter withstands commonly used cleaning chemicals and performs even in the harshest conditions.
The standard mounting options include mounting on a wall and on a DIN rail. With an adapter plate, the transmitter can be installed to replace an HMT330, DMT340, and MMT330 series transmitter. A pole mounting kit is also available as an accessory.
