Product Announcement from Knick USA


High Accuracy ,Innovative Design Temp.Transmitters-Image

In virtually all areas of industry temperatures are continuously measured and often used as reference input for closed-loop control systems, monitoring systems,safety shutdown systems, or for similar critical jobs. Here,normally the highest demands are placed on accuracy, flexibility, and functional safety as well as electrical safety. Different sensors are used depending on the measuring task. They provide a raw signal which is prepared, linearized, and standardized for further processing using a temperature transmitter.

The Problem - There are a very wide range of standardized and commercial temperature sensors. The large number of sensors, connection variants, individual temperature ranges, different supply voltages, and required output signals call for very variable transmitters that can be optimally suited to the different conditions. However, the required flexibility should not be paid for with complex operation. Rather, it is desirable that adjustments can easily be made on the site. High performance should not result in increased susceptibility - high reliability and availability are key requirements.

The Solution - The universal ThermoTrans®P 32100 temperature transmitters

provide connection possibilities for all common thermocouples and resistance thermometers. They can be flexibly adapted to the respective measuring task using DIP and rotary switches or via an IrDA ® port. The broadrange power supply covers all common supply voltages from 24 to 230 V and ensures maximum safety even with unstable mains supplies. 3-port isolation with Safe Isolation up to 300 V AC/DC according to EN 61140 ensures optimum protection of personnel and equipment as well as unaltered transmission of measurement signals. The ThermoTrans ® P 32100 offer maximum performance in the smallest of spaces. Resistance thermometers can be operated either in 2-, 3-, or 4- wire configuration. The configuration type is automatically recognized, adjustment is not required. All commercial thermocouples can be detected with internal or external reference junction compensation. Input voltage signals up to +/-1000 mV are converted to 0/4 to 20 mA or 0 to 10 V standard signals. This enables low-cost implementation of current measurements using shunt resistors, for example. The devices meet the requirements of type of protection "n". This means they can be installed and used in Zone 2 hazardous areas in the EC, the USA, and in Canada. Thanks to their approval to Class 1, Division 2 (UL 1604), they can also be used according to the traditional North American classification system.

Special measuring tasks can be solved with ThermoTrans ® devices that Knick configures according to individual specifications. Fixedrange models without switch are used, for example, when manipulations or mix-up are to be excluded. Knick offers the ThermoTrans ® P 32100 transmitters with SIL approval for applications with high demands on functional safety.

The requirements of EN 61508 were implemented by a specially developed hardware and software. The fail-safe concept makes use of structural measures at the device level (redundancy of system components) and diagnostic methods for selective fault detection. The product is SIL 2 approved (EN 61508) by an authorized body (TÜV Rheinland).

 
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