Opto 22 G4AD5, G4AD8, G4AD17, G4AD18, G4AD19 Data Sheet

I/O MODULES

ANALOG INPUT

G4

DAT A SHEET

Form 422-050809

Description

Thermocouple analog modules provide a single channel of transformer and
optically- isolated temperature-to-digital conversion. The modules offer wide nominal
input range and special over/under range capabilities. The modules also include
complete electrical channel-to-channel isolation that 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. The field connections are made through four
contacts to the terminal strip located on the brick base or Modular Controller I/O
board.

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.”

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Part

Numbers

G4AD5 Type "J" Thermocouple Input

G4AD8 Type "K" Thermocouple Input

G4AD17 Type "R" Thermocouple Input

G4AD18 Type "T" Thermocouple Input

G4AD19 Type "E" Thermocouple Input

G4AD23 Type "S" Thermocouple Input

G4AD24 Type "B" Thermocouple Input

Description

Features

Rugged packaging

4000 Vrms Transient Isolation

True Differential (Floating) Inputs

12-bit Resolution

Factory-calibrated, no user adjustment necessary

Operating temperature 0° to 70° C

I/O MODULES

ANALOG INPUT

G4

DAT A SHEET

Form 422-050809

Specifications

Module Specification

G4AD5 G4AD8 G4AD17 G4AD18 G4AD19 G4AD23 G4AD24

Thermocouple Type J K R T E S B

Nominal Temperature Range °C 0° to 485° -100° to 460° 0° to 960° -200° to 224° -100° to 435° 0° to 1,034° 42° to 1,491.85°

Nominal Temperature Range °F 32° to 905° -148° to 860° 32° to 1,760° -328° to 435.2° -148° to 815° 32° to 1,893.2° 107.888° to 2,717.33°

Accuracy* ± 1° C ± 1° C ± 2.5° C ± 0.9° C ± 0.9° C ± 2.5° C ± 5° C

Over/Under Range Capability °C -32° to 1,200° -150° to 1,372° -50° to 1,768° -270° to 400° -155° to 1,000° -50° to 1,768° 42° to 1,820°

Over/Under Range Capability °F -25° to 2,192° -238° to 2,501° -58° to 3,214° -454° to 752° -247° to 1,832° -58° to 3,214° 107.9° to 3,308°

Over/Under Range Accuracy ± 2° C ± 2° C ± 5° C ± 1.8° C ± 1.8° C ± 2.5° C ± 5° C

* Accuracy figure requires use of gain and offset commands.

General Specification

Isolation (Transient)
Input-to-output
Input-to-analog supply

Cold Junction Compensated Yes

Open Thermocouple Detection Yes

Input Response Time 5% of scale change in 8.5 ms

Ambient Temperature
Operating
Storage

Resolution 12 bits

4,000 Vrms
4,000 Vrms

63% of scale change in 165 ms

0° to 70°C

-25° to 85°C

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