Laurel Electronics Laureate Thermocouple Panel Meter-Controller User Manual

LAUREL

Thermocouple

ELECTRONICS, INC.

Features

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Factory calibrated for thermocouple types J, K, T, E, N, R, S

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Entire range of each thermocouple in one scale

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Highly accurate and repeatable

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Selectable 1° or 0.°1, degrees Celsius, Fahrenheit, Kelvin or Rankin

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Up to 60 conversions per second

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Peak or valley display

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Universal AC power, 85-264 Vac

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1/8 DIN case sealed to NEMA-4X from front panel

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Optional serial I/O: Ethernet, USB, RS232, RS485, Ethernet-to-RS485 converter

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Optional relay output: dual or quad relays, contact or solid state

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Optional isolated analog output: 4-20 mA, 0-20 mA, 0-10V, -10 to +10V

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Optional low voltage power: 10-48 Vdc or 12-32 Vac

Description

The Laureate thermocouple meter is factory calibrated for type

J, K, T, E, N, R and S thermocouples for exceptional accuracy
and repeatability. The entire span of each thermocouple type is
presented in a single range. The thermocouple type, unit of
measure (°C or °F), resolution (1° or 0.1°), and upscale or down­scale open sensor indication are selectable from the front panel
or via the serial interface. Display in Kelvin or Rankin is selected
by offsetting the Celsius or Fahrenheit ranges. Cold junction
compensation is standard.

All ranges for all thermocouple 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.

Specifications

Laureate™

Panel Meter / Controller

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 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.

LAUREL

TC Type Range Conformity Error

J -210°C to +760°C (-347°F to +1400°F) ±0.09°C (±0.16°F)

K -244°C to +1372°C (-408°F to +2501°F) ±0.1°C (±0.17°F)

T

E -240°C to +1000°C (-400°F to +1830°F) ±0.18°C (±0.32°F)

N -245°C to +1300°C (-410°F to +2370°F) ±0.10°C (±0.17°F)

R -45°C to +1768°C (-49°F to +3214°F) ±0.17°C (±0.31°F)

S -46°C to +1768°C (-51°F to +3213°F) ±0.12°C (±0.22°F)

ELECTRONICS INC., 3183-G Airway Ave., Costa Mesa, CA 92626, USA • Tel [phone] • www.laurels.com 1

0°C to +400°C (32°F to 752°F)

-257°C to 0°C (-430°F to +32°F)

±0.03°C (±0.05°F)

±0.2°C (±0.36°F)

Accuracy

Calibration
Overall accuracy at 25°C
Span tempco
Reference junction accuracy
Span tempco

Electrical

Input resistance
Input current
Max lead resistance
Overvoltage protection
NMR at 50/60 Hz
CMR, DC-60 Hz
CMV, DC-60 Hz

A-to-D Conversion

Technique
A-to-D Rate
Output Update
Display Update

Display

Readout
Color
Indicators
Open sensor indication

Power

NIST Monograph 125 (IPTS-68)
±0.01% of full span + conformity error
±0.003% of reading/°C

0.5°C, 10°C to 40°C
±0.003% of reading/°C

1 GΩ
100 pA
1 kΩ max for rated accuracy
125 Vac
80 dB plus selectable digital filter
120 dB with 500 ohm imbalance
250 Vac from power and earth grounds

Concurrent Slope (Pat 5,262,780)
60/s at 60 Hz, 50/s at 50 Hz
56/s at 60 Hz, 47/s at 50 Hz

3.5/s at 60 Hz, 3/s at 50 Hz

5 digits, 7-segment, 14.2 mm (.56")
Red or green LED
Minus sign plus 4 red LED lamps for relays
Flashes full-scale

Voltage, standard
Voltage, optional
Frequency
Power Isolation

Analog Output (optional)

Output Levels
Current compliance
Voltage compliance
Scaling
Resolution
Isolation

Relay Outputs (optional)

Relay Types

Current Ratings

Output common
Isolation

Serial Data I/O (optional)

Board Selections

Protocols
Data Rates
Digital Addresses
Isolation

85-264 Vac or 90-300 Vdc (DC operation not UL approved)
12-32 Vac or 10-48 Vdc
DC or 47-63 Hz
250V rms working, 2.3 kV rms per 1 min test

4-20 mA, 0-20 mA, 0-10V, -10 to +10V (jumper selectable)
2 mA at 10V ( > 5 kΩ load)
12V at 20 mA ( < 600Ω load)
Zero and full scale adjustable from -99999 to +99999
16 bits (0.0015% of full scale)
250V rms working, 2.3 kV rms per 1 min test

2 Form C contact relays or 4 Form A contact relays (normally open)
2 or 4 Form A, AC/DC solid state relays (normally open)
8A at 250 Vac or 24 Vdc for contact relays
120 mA at 140 Vac or 180 Vdc for solid state relays
Isolated commons for dual relays or each pair of quad relays
250V rms working, 2.3 kV rms per 1 min test

Ethernet, Ethernet-to-RS485 server, USB, USB-to-RS485 server, RS485
(dual RJ11), RS485 Modbus (dual RJ45), RS232.
Modbus RTU, Modbus ASCII, Laurel ASCII protocol
300 to 19200 baud
247 (Modbus), 31 (Laurel ASCII),
250V rms working, 2.3 kV rms per 1 min test

Environmental

Operating temperature
Storage temperature
Relative humidity
Protection

LAUREL

ELECTRONICS INC., 3183-G Airway Ave., Costa Mesa, CA 92626, USA • Tel [phone] • www.laurels.com 2

0°C to 60°C

-40°C to 85°C
95% at 40°C, non-condensing
NEMA-4X (IP-65) when panel mounted