Laureate™ Thermocouple & RTD
Temperature Panel Meter / Controller
 High accuracy plus linearized transmitter & control outputs

Standard Features

Product Links

Specs Mechanical Serial I/O options Power options Relay options Analog output option Meter manual Serial manual Modbus manual Setup software Pricing

• Input for thermocouple types J, K, T, E, N, R, S
• Input for 100 ohm platinum RTDs with DIN and ANSI curves
• Highly accurate and repeatable
• Celsius, Fahrenheit, Kelvin or Rankine scales
• Selectable 1º or 0.1º resolution
• 2, 3 or 4-wire RTD connection with lead resistance compensation
• Upscale or downscale open sensor indication
• Up to 60 conversions per second
• Peak or valley display
• Green or red display
• Universal AC power, 85-264 Vac
• NEMA 4X, 1/8 DIN case
• Certified to UL 61010C-1 (UL mark), EN 61010-1 (CE mark), and RoHS)
  Options:
• Low voltage power: 10-48 Vdc or 12-30 Vac
• Dual relays: Form C contact or Form A solid state
• Analog output: Isolated, 4-20 mA, 0-20 mA, 0-10V, -10 to +10V
• Serial communications: RS232, RS485, Modbus RS485, USB, USB-to-RS485 converter

Laureate™ digital panel meters with a temperature signal conditioner board accept type J, K, T, E, N, R and S thermocouples, and 100 ohm platinum RTDs with a DIN alpha of 0.00385 or ANSI alpha of 0.00392. The thermocouple or RTD type, unit of measure (°C or °F), resolution (1° or 0.1°), and range are selectable from the front panel or via the serial interface. Display in Kelvin or Rankine can be selected by offsetting the Celsius or Fahrenheit range.

Cold junction compensation and RTD excitation are provided. Open sensor indication may be set up to indicate either upscale or downscale. RTD connections can be of the 2-, 3- or 4-wire type. With 3- or 4-wire connections, the meter automatically compensates for lead resistance of the sensor.

All ranges for all temperature sensor types are digitally calibrated at the factory, with calibration factors stored in an EEPROM on the signal conditioner board. This allows temperatures sensors and signal conditioner boards to be changed in the field without recalibrating the meter.

High read rates at up to 60 or 50 conversions per second while integrating the signal over a full power cycle are provided by Concurrent Slope (US Pat 5,262,780) analog-to-digital conversion. High read rates are ideal for peak or valley capture, real-time computer interface, and control. Peak and valley values are automatically captured. These may be displayed via a front panel pushbutton command or a control signal at the rear connector, or be transmitted as serial data.

Digital filtering is selectable for electrically noisy environments, including a batch averaging filter and an adaptive moving average filter which provides a choice of 8 time constants from 80 ms to 9.6 s. When a significant change in signal level occurs, that filter adapts by briefly switching to the shortest time to follow the change, then reverts back to the selected time constant. In a selectable Auto filter mode, the filter time constant is automatically selected based on detected signal noise.

Designed for flexibility. Plug-in isolated analog output, dual setpoint controller, and serial communications boards can upgrade Laureates from a simple monitor to system interface and control. Laureates may be powered from 85-264 Vac or optionally from 12-30 Vac or 10-48 Vdc. They are available with red or green LEDs. The 1/8 DIN case meets NEMA 4X (IP65) specifications from the front when panel mounted. Any setup functions and front panel keys can be locked out for simplified usage and security.

Operation as a 4-20 mA Transmitter
 
With the optional analog output board, Laureate temperature meters can serve as superb, isolated 4-20 mA transmitters. The analog output is scaled to the display, which is linearized to ºC or ºF and is exceptionally accurate. The analog output further tracks the high read rate of the meter, at up to 60 readings per second at 60 Hz power. Fast update rates are beneficial in many closed-loop and PID control applications.

Operation as a Fast Controller
 
With the dual contact relay or dual solid state relay output board options, Laureate temperature meters can serve as extremely fast and accurate ON/OFF controllers for closed-loop temperature control. Multiple setpoint operating modes are individually selectable for each relay, as explained in the dual-setpoint controller section. Relay duty cycles and chatter can be minimized with programmable hysteresis and time delays. High duty cycles and extremely fast response times are possible with the solid state relay, which has a typical response time of only 17 ms.

Operation as a Supervisory Monitor
 
By using the optional dual contact relay or dual solid state relay output options, Laureate temperature meters can monitor processes and provide alarms or shutoffs when these processes exceed normal limits. A band deviation operating mode can be selected for each relay, where an alarm is generated whenever the reading is a selected number of counts above or below the setpoint. Relay operation can be selected as latching or non-latching. When an alarm or shutdown condition is reached, a latched output will remain in the alarm condition until it is reset by a front panel pushbutton, via the serial interface, or via the rear connector.