MODEL 3-50-7 EZ-HART Calibration Communicator

The Winchester 3-50-7 is a standalone tablet based HART® communication tool.The tablet configured with the “EZ-HART” mobile app utilizes a wireless HART modem that connects directly to the HART transmitter being tested or configured. When you combine any process calibrator, you have a complete HART calibration and configuration solution.


  • Full HART Device Description support of all HART devices
  • Configure HART devices
  • Perform HART trim on HART devices when used with a process calibrator
  • Monitor device PV, SV, TV, QV and other measured HART variables
  • Quarterly HART DD updates for free
  • Convenient wireless connectivity to HART modem, Long range wireless communication up to 250 feet Easy to use, fast connect and view HART data
  • Store HART device configurations

The 3-50-7 puts HART device configuration at your fingertips. An AndroidTM based tablet user interface makes HART configuration easy. The external wireless modem allows you to connect the modem to the transmitter being tested so you can communicate to the device remotely. HART transmitters can often be found in confined spaces that are difficult to access or are out of reach. The Model 3-50-7 helps reduce the need to stand right next to the device being tested or configured so you can work from a safer, more convenient location.

Multiple language support: Select language from the Android operating system. Hart communication commands are limited to English per the HART device descriptions. Wireless HART Modem: Includes configurable connection cable that accepts either the hook clips for connecting to wires or the extended tooth alligator clips designed to connect to transmitter connection screw heads. Rechargeable lithium-ion battery lasts easily for several days of HART device configuration and testing activities. Rugged enclosure and test lead set designed for process environments.

HART support: Complete access to all features of the HART device’s DD including methods. Meets HART physical layer specification: HCF_SPEC-54. DD updates: Download free DD updates for 3-years. Updates available when DD updates released from the HART FieldComm group (approximately four times a year). Hard side case: Protects and stores tablet, modem, test leads and connection cable in a lightweight durable tote that is easy to carry.

Tablet Operating System: Android 5.0 or newer Processor: ARM or Atom Memory RAM: 1 GB Memory ROM: 2 GB Screen: 960 x 540 qHD Communication Port: Bluetooth Bluetooth Specification: Bluetooth v2.0 Frequency: 2.4 GHz Class 1 master distance: 275 ft (83.8 m) Battery Type: Rechargeable Li-Ion Life: 19 hours continuous use Cables HART Cable Length: 4 ft (1.2 m) HART Cable Connector: 0.16 kg (0.36 lbs) Enclosure Material: High strength ABS Plastic Dimensions: 10.16 x 2.5 x 6.9 cm (4 x 1 x 2.75 in) Unit Weight: 0.16 kg (0.36 lbs) Interface Interface: Capacitive coupling Output: 600 mVpp Leakage: <10uA Connections: Across loop resistor or HART field device Specifications: HART 4, HART 5, HART 6, HART 7 HART physical layer spec: HCF_SPEC-54 Environmental Operating Temp: 0 °C to 50 °C (32 °F to 122 °F) Storage Temp: -10 °C to 45 °C (-14 °F to 113 °F) Humidity: 0% to 90% (non-condensing)