Pressure Temperature Transmitter STT650 SmartLine DIN Rail High
accuracy – 0.1 Deg C for RTD 4-20mA dc
Introduction
Part of the SmartLine® family of products, the STT650 is a DIN Rail
mounted high performance Temperature transmitter offering high
measurement accuracy, stability and reliability over a wide range
of process and ambient temperatures. SmartLine easily meets the
most demanding needs for temperature measurement applications.
Description
The SmartLine Temperature transmitter is designed and manufactured
to deliver very high performance. The total accuracy level of the
transmitter including the ambient temperature effect in, harsh
industrial environments, allows the STT650 to replace virtually any
competitive transmitter available today.
Best in Class Features:
Leading performance
o High accuracy – 0.1 Deg C for RTD
o Faster response, up to 135 msec update
o Stable measurement, 0.12% of span for two years
Reliable measurement
o Built in 1500VAC Galvanic Isolation
o Superior noise performance
o Sensor error detection in accordance with Namur 89
Lower Cost of Ownership
o Universal input
o Dual channel option saves panel space
o Easy to configure, install and commission
o Can double up as position and level transmitters for valves and
ohmic level sensors.
Communications/Output Options:
o 4-20mA dc
o HART ® (version 7.0)
o FOUNDATION™ Fieldbus* compliant to ITK 4.6.
o PROFIBUS® PA* ver. 3.0
Common for all the Models
EMC Specifications:
All the STT650 DIN Rail models with universal input are tested for
the following parameters:
• Conducted Noise - 10Vrms in the range of 15Hz to 100MHz
• Radiated Noise - 10V/m in the range of 80 to 1000MHz
• Surge test - 1KV Differential mode ; 2 KV Common mode • Burst
Noise - 2.5KV
STT650 RTD Input type
Features
• Analog 4-20 mA output
• RTD or Ohm input
• Single or dual channel option
• NAMUR NE43 sensor error response
• Programmable using the STT17C PC Configuration tool
Instructions:
Make selections from all Tables Key through XIII using column below
the proper arrow. Asterisk indicates availability. Letter (a) refer
to restrictions highlighted in the restrictions table. Tables
delimited with dashes.
Performance specifications
| Sensor Type RTD (2,3 wire) | Basic Accuracy* | Rated Range | Minimum Span** | Temperature Effects per 1.0 °C (1.8 °F)*** Change in Ambient
Temperature |
| Fixed | % of span | °C | °F | | Fixed | % of span |
| Pt100 | 0.3°C (32.54°F) | +/- 0.1 | -200 to 850 | -328 to1562 | 25°C (45°F) | 0.01°C (0.018°F) | +/- 0.01 |
| Ni 100 | 0.3°C (32.54°F) | +/- 0.1 | -60 to 250 | -76 to 482 | 25°C (45°F) | 0.01°C (0.018°F) | +/- 0.01 |
| Ohms | 0.2Ω | +/- 0.1 | 0 to 10000Ω | 30Ω | 20 mΩ | +/- 0.01 |
* Basic accuracy or +/- 0.1% of Span whichever is greater
** or 50% of upper range value, whichever is greater
*** reference temperature 20 Deg C, Ambient temp effect is greater
of the fixed value or the applicable % of Span
