Signal converters and galvanic isolators

Product catalog summary

Overview
Nokeval specializes in modular measuring instruments for industrial applications, offering cost-effective solutions with low investment and maintenance needs. The panel meter series 2000 provides over 200 combinations through interchangeable input and output cards.

New Products
Nokeval has launched a new programming language, ELo, for custom functions in measuring instruments. New products include wireless transmitters for humidity and temperature, and cost-effective panel meters PME600 and PME610.

Wireless Measurements
The wireless measurement system supports over 200 transmitters with a one-minute interval, offering a more economical solution than wired systems.

PromoLog Data Acquisition Software
PromoLog is a customizable data acquisition software with a drag-and-drop interface, supporting both wireless and wired transmitters without channel limits.

Product Categories

Displays: Panel meters, loop-powered LED displays, and multichannel displays.
Large Displays: Small and large field displays, and large panel meters.
Transmitters: Head mounting temperature transmitters, universal transmitters, multichannel transmitters, and weighing transmitters.
Signal Converters: Galvanic isolators, serial data converters, and power supplies.
Wireless Transmitters: Wireless transmitters and receivers.
Temperature Sensors: Pt100 and thermocouple sensors.

Technical Specifications
Loop powered displays operate from a 4-20 mA loop, with models featuring alarm relays. Modular panel meters and field displays offer various input options, and the panel meter series 2000 supports over 200 combinations without needing calibration after card changes.

Specifications

Dimensions: 96 x 48 x 115 mm (WHD) for all models.
Digit Size: 14.5 mm.
Display Color: Red or green LED options.
Inputs: Strain gauge, Namur, NPN/PNP, contact, and pickup with frequency ranges from 0.0001 to 5000 Hz.
Accuracy and Resolution: 0.01% to 0.1% accuracy, resolutions up to 1/64000, 16 bit.
Settings: Configurable via front keys.
Protection Class: Front panel IP65.
Power Supply: 85-240 VAC, 12-32 VDC / 24 VAC.

Special Functions and Options

Pulse Divider: Selectable from 1 to 64000.
Alarms: Optional 2-3 relays, 240 VAC, 2A.
Outputs: Optional 0/4-20 mA, 0-5/10V outputs.
Serial Signal: RS-232 and RS-485, Nokeval SCL protocol available.
Sensor Supply: 10 V or 24 VDC, max. 150 mA.

Applications

Ratio display (%) for two flow meters, difference display, and batch control.
Display scaling for floating point values.

Additional Models
Models 2066, 2067, 2071, 2081, and others offer unique features like time display, logic level inputs, and multi-channel capabilities.

Ordering Information
Optional cards can be added to the basic type and power supply, with specific ordering codes for customization.

Conclusion
Nokeval provides a wide range of incremental sensors and panel meters with customizable options for precise measurement and control in various industrial applications.

Specifications
Operating temperature ranges from 0 to 60°C, with some devices extending to -10°C. Devices are typically installed on a 35 mm DIN rail, with terminal sizes between 1.5 mm² and 2.5 mm². Common dimensions include 22.5 x 82 x 99 mm and 22.5 x 60 x 75 mm. Power supply is commonly 24 VDC, with some devices supporting USB power. Galvanic isolation is provided in several devices, with isolation voltages up to 3 kVAC.

Procedures
Calibration is required after selecting ranges via DIP switches. Configuration can be done using MekuWin software or front panel buttons.

Standards and Protocols
Supported communication protocols include Modbus RTU, Nokeval SCL, and Modbus TCP/IP. Devices comply with UL, CE, and TUV standards.

Recommendations
Suitable for remote temperature measurement, weather stations, and quality control in production plants. Wireless transmitters are recommended for flexible and low-cost quality control.

Key Features

Analog and Digital Outputs: 4-20 mA and 0-10 V outputs supported.
Serial Converters: RS485, RS232, and USB connections supported.
Power Supplies: Range from 10 W to 120 W, with various output voltages and protections.
Data Logging: Wireless data logging facilitated by repeaters and receivers, supporting up to 1000 channels.

Critical Information

Load Regulation: Typically around ±2% with temperature coefficients of ±0.02%/°C.
Efficiency: Power supplies have efficiencies ranging from 77% to 86%.

Specifications
Technical specifications for wireless transmitters and receivers include frequency of 433.92 MHz, operating temperature from -30 to +60°C, power supply of 12-30VDC or 90-230VAC with transformer, and protection classes IP65, IP66, IP67 depending on the model.

Procedures
Data processing and configuration can be done using PromoLog data acquisition software or user’s software. Certain devices can operate independently without real-time data processing on a PC, suitable for Modbus RTU devices like PLCs.

Norms and Standards
Compliance with EN 13485 certification for certain sensors, ensuring standards for use in cold rooms and freezers.

Recommendations
Use repeaters to extend the range of wireless systems and ensure regular calibration of transmitters for accuracy. Use external power supplies to prevent data loss during computer shutdowns.

Data and Graphical Information
Tables show the maximum number of transmitters allowed in a coverage area based on transmission intervals and the use of repeaters. Details on battery life and accuracy for different models are provided.

Critical Information

Battery life typically exceeds 3 years for most models.
Maximum range for transmitters is between 50 to 500 meters.
Accuracy for temperature sensors is generally < ±0.5°C.
Configuration is done via MekuWin or similar software.

Additional Features
Features include plug-and-play measuring modules, cost-effective recalibration options, and online calibration certificate downloads. A surveillance unit (DPR991) is available for data acquisition without a computer.

Overview
Technical specifications and features of transmitters and indicators with serial output options including RS-485, RS-232, and USB, compatible with Nokeval SCL or Modbus RTU/TCP protocols. Devices can connect directly to a computer's USB or serial port, or be accessed remotely via IP address and port number.

Computer Requirements
System requires Windows XP or Vista, a minimum 500 MHz CPU, at least 512 MB of RAM, and an available serial or USB port.

Features
Wireless Lite Server supports various modules including wireless transmitters and receivers, analog/digital/bar/trend graph displays, data recording, basic user interface components, surveillance reporting, SMS alarm service, and remote access client. Additional features for certain models include wired inputs, multi-trend displays, extended user interface components, mathematical and statistical analysis modules, analog and digital outputs, external displays, Vaisala weather station support, remote access server, and SQL database support.

Transmitter Types
Models such as PromoLog-Wireless, PromoLog-Lite, and PromoLog-Server are detailed in terms of wired and wireless channels.

Sensors and Connectors
Specifications for various sensors including Pt100 and thermocouples, along with information on connectors and extension cables. Sensor types, lengths, diameters, materials, temperature ranges, and protection features are specified.

Applications
Ready-made applications from a library or custom user interfaces can be used. Wireless transmitters ease quality control in processes.

Contact Information
Nokeval Oy's contact details are provided for further inquiries.