Acromag TT231-0600, User Manual, Page: 4 / 41

Model TT231-0600 Two-Wire RTD Transmitter w/USB
Acromag, Inc. Tel: 248-295-0880
- 4 - http://www.acromag.com
- 4 - http://www.acromag.com
GETTING STARTED
DESCRIPTION
Symbols on equipment:
Means “Refer to User’s Manual
(this manual) for additional
information”.
The TT231-0600 is an ANSI/ISA Type II transmitter designed to interface with a
Platinum RTD sensor (Resistance Temperature Detector), or resistance input, and
modulate a 4-20mA current signal for a two-wire current loop. This unit is setup
and calibrated using configuration software and a USB connection to Windows-
based PC’s (Windows XP and later versions only). The unit provides RTD sensor
excitation, linearization, lead-wire compensation, and lead break or sensor burnout
detection. It also offers an adjustable input and output range with degrees F or C
selection and adjustable loop alarm levels.
Key Features

Pt RTD or Linear Resistance input support.

Adjustable input range with spans up to 850°C (1562°F) or 900Ω.

Adjustable input excitation, linearization, and output range.

Fully analog signal path (input signal is not digitized).

Digitally setup and calibrated w/ Windows software via USB.

Thin 12.5mm wide enclosure for high-density DIN-rail mounting.

Converts sensor signal with a single differential measurement.

Very fast output response.

Supports Degrees Celsius or Fahrenheit Temperature Ranges.

Extra output connections support Sink or Source output wiring.

Connects to two, three, or four wire sensors.

Lead-wire compensation (3-wire).

Up or down-scale lead-break/burnout detection.

Adjustable output error/alarm levels outside of operating range.

Convenient non-polarized two-wire current loop powered.

Provides a linearized or non-linearized output response.

Adjustable under-range and over-range levels. Namur compliant.

High measurement accuracy and linearity.

Wide ambient temperature operation.

Hardened For Harsh Environments.

CE Approved.

UL/cUL Class 1, Division 2 Approved.
Application
For additional information on
these devices and related topics,
please visit our web site at
www.acromag.com and download
our whitepaper 8500-904,
Introduction to Two-Wire
Transmitters. Also see 8500-917,
The Basics of Temperature
Measurement Using RTD’s.
This transmitter is designed for high-density mounting on T-type DIN rails. Its non-
isolated input is intended to mate with non-grounded, 100Ω, Pt RTD temperature
sensors or resistive elements. It provides an output current linearized to the RTD
sensor temperature. Optionally, it can support simple resistance input and drive an
output current linear to sensor resistance.
The output signal is transmitted via a two-wire, 4-20mA current loop. The two-wire
current signal can be transmitted over long distances with high noise immunity.
Sensor lead-break detection and the inherent 4mA live-zero output offers
convenient I/O fault detection, should an I/O wire break. Extra connections at the
output of this model allow it to be optionally wired for a “sourced” 4-20mA output
configuration (see Output/Power Connections).
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