Opto 22 G4AD10 Data Sheet

I/O MODULES

ANALOG RTD INPUT

G4

DAT A SHEET

Form 427-050809

Description

The G4AD10 module provides a single channel of optically-isolated temperature-to-digital conversion. This module also includes
complete electrical channel-to-channel isolation, which eliminates troublesome ground loop problems. Modules plug into an Opto 22
Modular controller or an analog I/O brick and are secured by a captive screw. Field connections are made to the terminal strip located on
the brick base or controller I/O board. The G4AD10 is suitable for temperature measurement where the RTD probe is grounded or when
ground loop currents exist. G4AD10 can be used with 2-wire, 3-wire, or 4-wire installations.

NOTE: Any system using analog sensors and input modules should be calibrated annually for analog signals. To do so, use OptoControl
commands “Calculate and Set Analog Offset” and “Calculate and Set Analog Gain.”

Part

Number

G4AD10 100 Ohms Platinum RTD Input

Description

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I/O MODULES

ANALOG RTD INPUT

G4

DAT A SHEET

Form 427-050809

Specifications

General Specifications

RTD input 10 0 Ω platinum (∝ = 0.00385)
Nominal temperature range °C -50° to 350° C
Nominal temperature range °F -58° to 662° F

Over/under range °C -72° to 812° C
Over/under range °F -97.6° to 1493° F

Accuracy* ±0.8° C

Resolution 12 bits

Response time Full-scale step change in 100 ms

Isolation (Transient)

Input-to-output

Input-to - analog supply

Ambient temperature

Operating

Storage

*Accuracy figure requires use of gain and offset commands.

4,000 Vrms
4,000 Vrms

0° to 70° C

-25° to 85° C

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Connections

3-WIRE CONNECTION

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