Laurel-electronics LT: 4-20 mA & Serial Data Output Transmitter f Manuel d'utilisateur télécharger pdf (Page 2)

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)

Signal Types

Data Rates

Output Isolation

Serial Protocols

Modbus Modes

Modbus Compliance

Digital Addressing

RS232 or RS485 (half or full duplex)

300, 600, 1200, 2400, 4800, 9600, 19200 baud

250V rms working, 2.3 kV rms per 1 min test

Modbus RTU, Modbus ASCII, Laurel ASCII

RTU or ASCII

Modbus over Serial Line Specification V1.0 (2002)

247 Modbus addresses.

Up to 32 devices on an RS485 line w/o a repeater.

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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Laurel-electronics LT: 4-20 mA & Serial Data Output Transmitter f Manuel d'utilisateur Page 2

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