NPT 1/2 dew-point transmitter FA 500

G 1/2RS-485Ethernet

Presentation
Dew point sensor with display and alarm relay FA 500
The FA 500 is a dew point sensor with integrated display and adjustable alarm relay designed for refrigerated, membrane and adsorption dryers. It provides reliable, long-term stable monitoring of dew point across ranges from -80... up to +50 °Ctd depending on the version. The FA 500 can measure pressure dew point up to 50 bar (special version up to 500 bar) or, when installed at ambient pressure/flow zone, the atmospheric dew point.

Variants / Order numbers
description | Order no.
FA 500 Dew point sensor for refrigerated dryer, -20...50 °Ctd | 0699 0501
FA 500 Dew point sensor for adsorption dryer, -80...20 °Ctd | 0699 0502
FA 500 Dew point sensor for adsorption dryer, -60...30 °Ctd | 0699 0503

Advantages and features

• Dew point monitoring down to very low values (up to -80 °Ctd depending on variant)
• Integrated display for local reading
• Adjustable alarm relay via keypad (NC contact, max. 60 VDC, 0.5 A)
• High long-term stability due to internal self-calibration
• IP65 enclosure for protection in demanding industrial environments
• Very fast response time
• Easy mounting: G 1/2" thread (options UNF 5/8" or NPT 1/2" available)
• High accuracy (depending on range) and on-site calibration/test capability with CS calibration kit (PC connection kit)

Applications
Monitoring dew point in refrigerated, adsorption and membrane dryers to ensure compressed air quality and to detect system drifts or failures in air treatment equipment.

Technical data / specifications

• Measuring range: -80...20 °Ctd, -60...30 °Ctd, -20…50 °Ctd, or 0…100 % RH (depending on variant)
• Accuracy: ±1 °C (at +50...-20 °Ctd), ±2 °C (at -20...-50 °Ctd), ±3 °C (at -50...-80 °Ctd)
• Pressure range: -1...50 bar (special version up to 500 bar)
• Power supply: 24 VDC (10...36 VDC)
• Protection rating: IP65
• EMC: according to DIN EN 61326-1
• Operating temperature: -20...50 °C
• Connections: 2 x M12, 5-pin for analog output, Modbus RTU and alarm output; M-Bus and Ethernet (PoE) optional
• PC connection / interface: Modbus-RTU (RS-485)
• Analog output (3-wire): 4...20 mA mapped to selected range (4...20 mA = -80...20 °Ctd / -60...30 °Ctd / -20...50 °Ctd)
• Maximum load for analog output: 500 Ω
• Alarm relay: NC, max. 60 VDC, 0.5 A
• Mounting thread: G 1/2" (options UNF 5/8" or NPT 1/2")
• Enclosure dimensions (W x H x D): 76.5 x 85 x 75 mm
• Weight: 3.5 kg