ST AT9000 Absolute Transmitter

ST-AT ABSOLUTE PRESSURE TRANSMITTER

Absolute Pressure Transmitters

The ST AT9000 Advanced Transmitter is a microprocessor-based smart transmitter that features high performance and excellent stability. Capable of measuring gas, liquid, and vapor, and liquid levels, it transmits 4 to 20 mA DC analog and digital signals according to the measured pressure.

It can also execute two-way communications between the Smart Communicator or HART® 375 communicator, thus facilitating self-diagnosis, range resetting, and automatic zero adjustment.

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Features

  • Excellent stability and high performance – Unique characterization and composite semiconductor sensors realize excellent temperature and static pressure characteristics.
  • Wide measuring range (rangeability) – A wide measuring range is available from a single model. This feature is highly effective in taking measurements over a wide range and reducing the need for inventory.
  • Remote communication – Two-way communication using digital output facilitates self-diagnosis, range resetting, automatic zero adjustment, and other operations. HART® protocol communication is available
SPECIFICATIONS
Process Connection:Rc 1/2, 1/2 NPT internal thread and Rc 1/4, 1/4 NPT internal thread
ApprovalsFM Intrinsically Safe, Explosion Proof, NonIncendive / ATEX Intrisically Safe, Flame Proof, NEPSI

IECEx Flame Proof and Intrisically Safe, Type N
Output Signal3.6 to 21.6 mA / 3.8 to 20.5 mA (NAMUR NE43 compliant)
Outputs:Analog output (4 to 20 mA DC) with DE protocol
Analog output (4 to 20 mA DC) with HART protocol
Digital output (DE protocol)
POWER
Supply Voltage17.9 to 42V DC. Reverse polarity protection is standard.
Failure AlarmUpper: 21.6 mA or more / Lower: 3.6 mA or less

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