Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois

60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com

RTD Input Modules

CIRCUITRY

Type/Function

Grayhill Part Number

73G-ITR100

73L-ITR100

73L-ITR3100/73L-ITR4100

Specifications

Units

Number of Inputs

1 Ch.

2 Ch.

2 Ch.

Resolution

bits

12

12

12

°C/count

0.10

0.098

0.098

+/- 0.8

+/- 0.3

+/- 0.3

Full Range Deflection

DIN 43760 standard

DIN 43760 standard

DIN 43760 standard

Temperature Coefficient

0.00385 (European)

0.00385 (European)

0.00385 (European)

Serial Data Format

12-bit packet

Right Justified, 16-bit

Right Justified, 16-bit

Serial Data Packet

—

115.2Kb, N, 8, 2

115.2Kb, N, 8, 2

mS

2.5

42

42

Input Temperature Range

°C (°F)

-50-350 (-58-662)

-50-350 (-58-662)

-50-350 (-58-662)

RTD Type

100 ohm platinum

100 ohm platinum

100 ohm platinum

Maximum Overload

V

—

+/- 6

+/- 6

Logic Voltage Range

Vdc

4.5-5.5

4.75-5.25

4.75-5.25

Max. Logic Supply Current@5Vdc

mA/Ch.

150

38

38

Module ID (Pin 9)

K

Ω

N/A

5.23

5.23

Isolation Voltage

Field to Logic

Vrms

2500

2500

2500

Field to Power

Vrms

2500

2500

2500

Module to Module

Vrms

2500

2500

2500

Channel A to Channel B

—

None

None

Environmental Conditions

Operating Temperature

°C

0 to +60°C

-40 to +85°C

-40 to +85°C

Storage Temperature

°C

-40 to +85°C

-55 to -100°C

-55 to +100°C

SPECIFICATIONS: By Part Number

Available from your local Grayhill Distributor.

For prices and discounts, contact a local

Distributor, a local Sales Office or Grayhill.

I/O

35

9

8

7

5.23K

10K

ISOLATED

DC/DC

CONVERTER

OPTICAL

ISOLATION

µP

CH. A

A/D

CH. B

CHANNEL A

CHANNEL B

SIGNAL

CONDITIONING

AND

FILTER

SIGNAL

CONDITIONING

AND

FILTER

Vs

Vs

–

5V

5V

100µA

100µA

A1

A2

A3

A4

B1

B2

B3

B4

++

––

1

2

3

4

6

5

1

2

3

4

NC

NC

NC

NC

MODULE ID

TXD

RXD

Vcc

GND

Circuits connected on 3-wire version

GNC

+

–

73L-ITR3100

3 WIRE RTD

PHOENIX CONTACT

CONNECTOR

(INCLUDED)

A4

B4

B3

B2

B1

A3

A2

A1

GS

+

–

73L-ITR4100

4 WIRE RTD

A4

B4

B3

B2

B1

A3

A2

A1