Description

The Laurel Electronics Laureate™ digital panel meters feature a 5-digit, 7-segment, 14.2 mm (.56″) high Red or Green LED display and can be powered by 85-260 VAC with a 12-32 VAC or 10-48 VDC optional power supply. The Laureate™ RTD meter is factory calibrated for four Resistance Temperature Detector (RTD) types: 100-ohm platinum (Pt100) with DIN alpha of 0.00385, 100-ohm platinum (Pt100) with ANSI alpha of 0.003902, 10-ohm copper with alpha of 0.00427 and 120-ohm nickel with alpha of 0.00672. The entire span of each RTD type is presented in a single range. The RTD type, unit of measure (°C or °F) and resolution (1°, 0.1° or 0.01°) are selectable from the front panel or via the meter’s serial interface. Display in Kelvin or Rankin is selected by offsetting the Celsius or Fahrenheit ranges. Typical accuracy is better than ±0.1°C (±0.2°F).

RTD connections can be via 2, 3 or 4 wires. With 3 or 4-wire connections, the meter automatically compensates for changes in lead resistance to the sensor. With 2-wire connection, the meter can measure and then subtract the lead wire resistance.

All ranges for all RTD 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.

Features:

• Reads 100Ω platinum, 10Ω copper & 120Ω nickel RTDs
• 2, 3 or 4-wire connection with lead resistance compensation
• Selectable 1°, 0.1°, or 0.01° resolution, °C, °F, K or R
• Up to 60 conversions per second, peak or valley display
• Universal 85-264 ACV / 90-300 DCV or 10-48 DCV / 12-32 ACV power
• Wide choice of options:
• 2 or 4 relays, mechanical or solid state (isolated)
• Analog output, 4-20 mA, 0-10V, or -10V to +10V (isolated)
• Serial data I/O: Ethernet, USB, RS485, RS232 (isolated)