Laurel Electronics Laureate RTD Temperature Panel Meter-Controller - Manual

LAUREL ELECTRONICS INC., 3183-G Airway Ave., Costa Mesa, CA 92626, USA • Tel 714-434-6131 • www.laurels.com 1
LAUREL
ELECTRONICS, INC.
Laureate™ RTD Temperature
Panel Meter / Controller
Features
• Factory calibrated for 100Ω platinum, 10Ω copper & 120Ω nickel RTDs
• 2, 3 or 4-wire connection with lead resistance compensation
• Highly accurate and repeatable
• Selectable 1° or 0.°1, degrees Celsius, Fahrenheit, Kelvin or Rankin
• Up to 60 conversions per second
• Peak or valley display
• Universal AC power, 85-264 Vac
• 1/8 DIN case sealed to NEMA-4X from front panel
• Optional serial I/O: Ethernet, USB, RS232, RS485, Ethernet-to-RS485 converter
• Optional relay output: dual or quad relays, contact or solid state
• Optional isolated analog output: 4-20 mA, 0-20 mA, 0-10V, -10 to +10V
• Optional low voltage power: 10-48 Vdc or 12-32 Vac
Description
The Laureate™ RTD meter is factory calibrated for four Re-
sistance 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.
RTD connections can be via 2, 3 or 4 wires. With 3 or 4-wire
connections, the meter automatically compensates for 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.
Digital filtering is selectable for electrically noisy environments
or resolution to 0.01°, 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 system use. Optional plug-in boards include
Ethernet and other serial communication boards, dual or quad
relay boards, and an isolated analog output board. Laureates
may be powered from 85-264 Vac or optionally from 12-32 Vac
or 10-48 Vdc. The display is 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. All
power and signal connections are via UL / VDE / CSA rated
screw clamp plugs.
Specifications
RTD
Metal
Alpha
R at
0°C
R at top
of range
Excitation
Current
Range
Conformity
Error
Platinum
0.003850
(DIN)
100Ω
390.48Ω
at 850°C
196 µA
-200°C to +850°C
-328°F to +1562°F
±0.03°C
±0.05°F
Platinum
0.003902
(ANSI)
100Ω
394.36Ω
at 850°C
196 µA
-200°C to +850°C
-328°F to +1562°F
±0.04°C
±0.07°F
Nickel 0.00672 120Ω
380.31Ω
at 260°C
196 µA
-80°C to +260°C
-112°F to +500°F
±0.05°C
±0.09°F
Copper 0.00427 9.035Ω
19.116Ω
at 260°C
5.0 mA
-97°C to +260°C
-143°F to +500°F
±0.05°C
±0.09°F