LKM 261 Digital Programmable Measuring Transducer

The LKM 261 is a digital programmable measuring transducer intended for mounting on a standard rail. The transducer can be programmed for different thermocouples according to DIN EN 60584-3. The LKM 261 converts the temperature dependent thermoelectric voltage of the sensors into a standard signal which ranges from 4 to 20mA. The temperature compensation is effected within the measuring transducer. The transducer can be programmed by using the universal interface type LKM S1 which is available from RS. An adjusting controller allows immediate minor display corrections

APPROVALS : EMC Emission and Noise immunity : EN 61326-1:2006

Input: thermocouples K, J, L, T, U, E, N, S, B, R, C in the respective range of definition
Zero: -200 to 600°C*
Range: 50K
Linearity error: 0.3K depending upon the thermocouple
Error of reference junction: +/- 0.5°C
Loop voltage: 10 to35V DC, reverse polarity protected
Output: 4 to 20mA current loop
Sensor break: 20mA
Short circuit: current value for room temperature
Reaction time: 0.5s
TC: 100ppm/°C
Operating temperature range: -40 to 85°C
Moisture: 95%
Mounting: 35mm DIN-rail
Type of terminals: screw terminals
Clamping range: 0.2 to 2.5mm²
Housing: Polycarbonate 75x25x53mm
Weight: approx. 60g
Vibration: 5g/10..200Hz

PR Electronics DIN Rail Mounting

3000 Series – Temperature Converter

PR Electronics 3000 series temperature transmitters offer reliable and accurate conversion of industry process temperature signals to analogue or digital outputs. The easy DIP-switch set-up allows for more than 1000 different pre-calibrated temperature range combinations. The 3000 series are compact, fast, and easy to use. With a slim 6 mm housing that offers exceptional performance and EMC immunity for dedicated applications.
Designed and rated to operate between -25 ˚C to +70 ˚C, making these devices a good choice in applications where the ambient temperature changes greatly, for example in control panels mounted in outdoor locations. These transmitters have a low temperature coefficient achieving precise measurements, even when the panel is exposed to wide variations in ambient temperature. You can continue to rely on the output signal, with no need to re-calibrate your device.

Features and Benefits

• High basic 0.05% accuracy in all available signal ranges
• All units tested to ensure 2.5 kVAC isolation and have excellent noise immunity
• NAMUR NE21 burst A criteria
• Transmits rapid changes in process measurements to your PLC/DCS for fast and accurate monitoring of critical signals
• Response time of < 30 ms for temperature measurements
• Low temperature coefficient better than 0.01% / °C in a wide -25 to +70°C ambient temperature range for precise measurements
• Long term accuracy better than 0.1% / 3 years with no need for re-calibration

DIP-Switch Programming

Re-calibration is not needed after changing the DIP-switch range settings. Just change the DIP-switch, cycle the power to the unit and obtain the new, pre-calibrated I/O range. HART programming is enabled for selected devices.

Mounting

Devices can be mounted both vertically and horizontally with no air gap separation required. The devices snap onto a power rail or DIN rail and are easily detached by lifting the bottom lock.

High Level of Isolation

Safe galvanic isolation of 2.5 kVAC provides high noise immunity and prevents ground loops for accurate delivery of the process signal to your control system.

Device Status Indicators

A front LED indicates device status, e.g. an error in the set-up, sensor or hardware.

Over Voltage and Polarity Protection

All terminals can withstand up to ±31.2 VDC and are protected against incorrect supply wiring to ensure safe, error-free installation.

5300 Series – In-Head Temperature Transmitter

PR Electronics 5300 series single input temperature transmitter offers unrivalled performance In applications making heavy demands on accuracy to convert a wide array of input types to a 4 – 20 mA output signal. The 5300 series transmitters are quickly and easily programmable to the specific application. Configuration via a standard PC and user-friendly software, PReset, available as a free download. Parameters for input, output, sensor error detection and process calibration can be configured via PReset within a few minutes.

Features and Benefits

• For DIN form B sensor head mounting
• Sensor drift detection maintains measuring point reliability
• Flexible input capability, with choice of output modes
• Superior accuracy ensures true, reliable measurements
• Fast response time easily supports safety and cost-critical applications
• High immunity to conducted noise: tested against 10 Vrms in the range 15 Hz–100 MHz
• Continuous check of vital stored data for safety reasons
• Runtime meters provide a valuable history of the process temperature and the ambient temperature around the transmitter
• Very low temperature coefficient ensuring maximum accuracy across changing ambient conditions

LKM 223 / 224 — Analogue Transducer for PT100

LKM 211 / 213 / 214 — Transducer for PT100 and Thermocouples

Transducer for Terminal Head, Shape B (DIN) for PT100 and Thermocouples, Type K

Transducer for Terminal Head, Shape B (DIN) for PT100 and Thermocouples, Type K

Transducer for Terminal Head, Shape B (DIN) for PT100 and Thermocouples, Type K