Status Instruments - Temperature Transmitters

Status Instruments was formed in 1982 by Brian Turner and Godfrey Johnson, and pioneered the use of in-head, field-mounted temperature transmitters with the launch of the TT4-20. The TT4-20 was the first of a highly successful range of products designed and manufactured in the UK for the process industry.

During a fourteen-year period of ownership by Richtec PLC Status Instruments continued to grow, and in March 2006 it was bought from Richtec by its management team, including the two original founder directors.

Status Instruments constantly strives to become the leading instrumentation company in our marketplace through innovative product-design and the highest levels of customer care and support.

We have been supplying our products to the process industry for approximately 25 years. They are divided into three categories:

• Field products
• Panel products
• Special-design projects

FIELD PRODUCTS

Field products measure the process at the point or near the process. The essential ruggedness they possess for their demanding roles when instrumentation is mounted out on the plant is demonstrated by their ten-year warranty.

Many of our field products are ATEX-approved for use in hazardous areas. These include temperature transmitters, display products and pressure-measurement products.

PANEL PRODUCTS

Like our field products, our range of panel products has been designed to achieve the highest levels of reliability and to bring laboratory accuracy into the control room.

The DM3600, for example, can be used for a huge variety of applications with our unique TFML custom software, which enables users to perform maths functions between inputs and outputs. These can either be supplied from a standard library, or written specifically to your needs.

Again underlining the ruggedness essential in the process industry, all our DIN rail signal conditioners are supplied with a ten-year warranty. Products such as Medacs™ are truly innovative and offer new and interesting ways ofimplementing unique solutions. In addition, the new and advanced SEM1600 and 1700 series are due for launch in 2007.

SPECIAL - DESIGN TEMPERATURE TRANSMITTER PROJECTS

Status Instruments uses its expertise to design unique solutions based on our expertise in process measurement to satisfy a variety of application problems. One of the products we supply in this category is the SEM170 subsea temperature transmitter, which is designed and built in-house specifically for use in a subsea environment.

SEM170 SUBSEA TEMPERATURE TRANSMITTER

Status Instruments have been supplying subsea temperature transmitters to the offshore industry for over ten years. The SEM170 Subsea temperature transmitter has the following advantages:

• Robust 4mA-20mA temperature transmitter
• Pressure tested to 224bar or 2,275m
• Customised fittings for connections
• Shock and vibration tested
• Temperature ranges from -70°C to +200°C
• Customised thermowells

The SEM170 subsea temperature transmitter is designed for a life expectancy in excess of 25 years, and uses an electronics design proven in industry over 25 years. This transmitter provides a two-wire 4mA to 20mA output proportional to the temperature change at the sensor.

The transmitter is encased in 316 stainless steel, and is compatible with all connectors and cable attachments, whether overmoulded or not. The thermowell, sensor and process connector is designed to suit the needs of the end user.

Full documentation is supplied, including:

• Dye and radiography tests
• X-rays
• Charpy test
• Material certificates
• Pressure-testing of sensor and thermowell
• Calibration certificates
• Factory acceptance-testing

The sensor has a lightweight design, for ease of use without reducing its effectiveness. Some variations of the process connector allow for the sensor to be inserted or removed without rotating the device. All sensors are hyperbarically tested to 224bar (unless specified in contract by user).

THERMOWELLS

Status Instruments can design thermowells for specific customer needs from Inconel or UNS S31803 Duplex stainless steel. This material is external proof-pressure tested to 15,000PSI, and can be used in temperatures from -60°C to +120°C.

The SEM170 subsea temperature transmitter is approved to EMC standard BS EN 61326, and has the following input characteristics:

• Supply voltage: 10VDC to 33VDC, reverse-polarity protected
• Supply sensitivity: 1μA / VDC
• Sensor: three-wire Pt100
• Sensor temperature range: standard -70°C to +200°C, but can be customised
• Accuracy: ±0.1% FS ±0.1°C + sensor
• Stability: time ±0.1% FS / year

Temperature -0.01°C

• Hysteresis: none
• Resolution: infinite