Laurel Electronics LTE: Ethernet & 4-20 mA Output RTD Transmitter for Pt100, Cu10 and Ni120 RTD Input User Manual

Page 2

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LAUREL

ELECTRONICS INC., 3183-G Airway Ave., Costa Mesa, CA 92626, USA • Tel 714-434-6131 • www.laurels.com 2

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 +1168°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

RTD Input

Calibration, Pt 100 DIN
Calibration, Pt 100 ANSI
Configuration
Excitation Current
Overall Accuracy
Span Tempco
Zero Tempco
Lead Resistance Tempco

Overvoltage Protection
Open Sensor Indication

IEC 751 (IPTS-68)
NIST Monograph 126
2, 3 or 4-wire connection
196 µA for Pt100 and Ni120, 5 mA for Cu10
±0.01% of full scale ±2 counts
±0.003% of reading/ºC
±0.03 deg/deg
2-wire connection: 10 mdeg/Ω/deg up to 10Ω per conductor
3 & 4-wire connection: 10 µdeg/Ω/deg up to 100Ω per conductor
125 Vac
0 mA or > 20mA output, selectable

Analog Output (standard)

Output Levels
Compliance, 4-20 mA
Compliance, 0-10V
Output Resolution
Output Accuracy
Output Isolation
Step Response Time

4-20 mA and 0-10 Vdc (selectable)
10V ( 0-500Ω m load )
2 mA ( 5 kΩ load )
16 bits (65,536 steps)
±0.02% of output span
250V rms working, 2.3 kV rms per 1 minute test
50 ms

Serial Communications (standard)

Type
Data Rates
Output Isolation
Serial Protocols
Modbus Compliance
Digital Addresses

10/100Base-T Ethernet per IEEE 802.3
300, 600, 1200, 2400, 4800, 9600, 19200 baud
250V rms working, 2.3 kV rms per 1 min test
Modbus TCP, Modbus RTU, Modbus ASCII, Laurel ASCII
Modbus over Serial Line Specification V1.0 (2002)
247 for Modbus, 31 for Laurel ASCII

Dual Relay Output (standard)

Relay Type
Load Rating

Two solid state relays, SPST, normally open, Form A
120 mA at 140 Vac or 180 Vdc

Power Input

Standard Power
Low Power Option
Power Frequency
Power Isolation
Power Consumption

85-264 Vac or 90-300 Vdc (DC operation not UL approved)
10-48 Vdc or 12-32 Vac
DC or 47-63 Hz
250V rms working, 2.3 kV rms per 1 min test
2W typical, 3W with max excitation output

Mechanical

Dimensions
Mounting
Electrical Connections

129 x 104 x 22.5 mm case
35 mm rail per DIN EN 50022
Plug-in screw-clamp connectors

Environmental

Operating Temperature
Storage Temperature
Relative Humidity
Cooling Required

0°C to 55°C
-40°C to 85°C
95% at 40°C, non-condensing
Mount transmitters with ventilation holes at top and bottom.
Leave 6 mm (1/4") between transmitters, or force air with a fan.

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