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Input:

 

2 or 3 Wire RTD

Output:

  One 8 Amp DPDT Relay or Two 8 Amp SPDT Relays

 

O

Automatic Leadwire Compensation

 

O

Field Adjustable Setpoints

 

O

Plug-In Design for Fast Installation

 

O

Input LoopTracker

®

 and Alarm Status LEDs

 

O

Alarm Test Button

 

Q

Process Limit Backup Alarm

 

Q

Temperature Alarm

 

Q

Over, Under, Out-of-Range Alarm

Model

Input

Standard Alarm Configuration

Power

API 1400 G

Factory ranged, specify 

RTD type,  

RTD curve, 

temperature range in °F or °C

Single setpoint one DPDT relay 

HI alarm, normal acting

115 VAC

API 1400 G A230

230 VAC

API 1400 G P

85-265 VAC or 60-300 VDC

API 1400 G D

9-30 VDC

API 1420 G

Factory ranged, specify 

RTD type,  

RTD curve, 

temperature range in °F or °C

2 setpoints, 2 SPDT relays  

HI/LO alarms, normal acting

115 VAC

API 1420 G A230

230 VAC

API 1420 G P

85-265 VAC or 60-300 VDC

API 1420 G D

9-30 VDC

Temperature Input

Factory configured, please specify the following 
Resistance at 0°C, curve, temperature range
RTD types: 

10 

 to 2000 

 including 100 

 0.00385 

 

DIN, 100 

 0.003916, 100 

 0.00392,  

 10 

 Cu, 1000 

 Ni-Fe, 120 

 Ni

Temp. range: 

°F or °C 

 

100°F (55°C) min. span or consult factory

Leadwire Compensation

< ±0.05% of span per 1 

 change in leadwire resistance

Excitation Current

10 

10 mA 

100 

:  5 mA 

1000 

:  0.5 mA 

2000 

:  0.2 mA

LoopTracker

Variable brightness LED indicates input level and status

API 1400 G Relay Output

Two SPDT form C contact sets operating in unison as one 
DPDT contact set 
One setpoint, 12 turn potentiometer, 0-100% of span 
Factory configured alarm type 
Normal acting alarm
Standard:  HI alarm 
Optional:  LO alarm

API 1420 G Relay Output

Two independent SPDT form C contact sets 
Two setpoints, two 12 turn potentiometers, 0-100% of span 
Normal acting alarms
Standard:  HI/LO alarm 
Options:  LO/LO, HI/HI, LO/HI alarms 
Internal jumpers for HI/LO, LO/LO, HI/HI, LO/HI

Relay Contact Rating

8 A @ 240 VAC resistive load or 30 VDC resistive load 
See graph on other side for relay load ratings
Caution:  Do not exceed socket voltage rating 
 

Use an RC snubber for inductive loads

Deadband

Alarm trip/reset window is symmetrical about the setpoint

API 1400 G

  1.0 to 100% of span, 12 turn potentiometer. 

API 1420 G

  Fixed at 1% of span, standard 

API 1420 G A

  Adjustable deadbands, 1.0 to 100% of span,  

 

1 turn potentiometer for each setpoint

Output Test Button

Toggles relay(s) to opposite state when pressed

Response Time

70 milliseconds typical

Ambient Temperature Range and Stability

–10°C to +60°C operating ambient 
Better than ±0.04% of span per °C stability, calculated, not 
tested

Housing and Sockets

IP 40, requires installation in panel or enclosure 
API 011 or API 011 FS socket 
Socket mounts to 35 mm DIN rail or can be surface mounted

Power

Standard: 

115 VAC ±10%, 50/60 Hz, 2.5 W max. 

P option: 

85-265 VAC 50/60 Hz, 60-300 VDC, 2.5 W typ. 

A230 option:  230 VAC ±10%, 50/60 Hz, 2.5 W max. 
D option: 

9-30 VDC, 2.5 W typical

Options—add to end of model number

L

 

1400 G with LO trip. Alarm trips on decreasing signal.

HH

  1420 G with HI/HI trip. Alarms trip at their respective  

 

trip points on increasing signal.

LL

  1420 G with LO/LO trip. Alarms trip at their respective  

 

trip points on decreasing signal.

LH

  1420 G with LO/HI trip instead of HI/LO.

A

 

1420 G with adjustable deadbands.

U

 

Conformal coating for moisture resistance

Accessories—order as a separate line item

API 011

 

11-pin socket, DIN rail or surface mount 

API 011 FS

 11-pin finger safe socket, DIN rail or surface mount 

API CLP1

  Module hold-down spring for high vibration or  

 

mobile applications

RTD Input Alarm Trips, Factory Ranged 

API 1400 G, API 1420 G

Applications

Description

The API 1400 G and API 1420 G are factory configured for an 
RTD input and provide alarm contact outputs. Heavy duty relay 
contacts allow the module to directly control high capacity 
loads.
The API 1400 G provides a single setpoint adjustment and 
DPDT relay contacts. The normal acting alarm output can 
be factory configured for HI or LO operation. Top-accessible 
potentiometers are used to adjust the alarm setpoint and 
deadband.
The API 1420 G contains two independent setpoints with 
two SPDT relay contact outputs. The normal acting alarm 
output can be factory configured for HI/HI, HI/LO, LO/HI or 
LO/LO operation. Top-accessible potentiometers are used to 
adjust each alarm setpoint. Deadband is fixed at 1% of span. 
Adjustable deadbands are optional.

LoopTracker and Alarm Status LEDs

API exclusive features include a LoopTracker LED that varies in 
intensity with changes in the RTD input signal. 
A red/green bi-color alarm status LED (two on the API 1420 
G) visually indicate alarm status. These LEDs provide a quick 
visual picture of your process at all times. 

Output Test

API’s exclusive functional test button can be used to verify the 
alarm and system operation. Press the Test button to toggle 
the alarm relay(s) to the opposite state. The output test but-
ton greatly aids in saving time during initial startup and/or 
troubleshooting.  

Free Factory 

I/O Setup!

Quick Link 

api-usa.com/1400

API 1400 G

Variable Brightness Input LED

Bi-Color Relay LED

Deadband Adjustment
Setpoint Adjustment

Output Test Button

2.38"

1.75"

API 1420 G

A

 Option Deadband Adjustments

2.38"

1.75"

Variable Brightness Input LED
Bi-Color Relay 2 LED
Bi-Color Relay 1 LED

Setpoint 2 Adjustment
Setpoint 1 Adjustment

Output Test Button

API 1420 G

P 001 001

115 VAC

Your Required Input

Your Alarm Configuration

2.75"

 H H H H H H

  H H H H H

 H H H H H H

  H H H H H

 H H H H H H

  H H H H H

 H H H H H H

  H H H H H

 H H H H H H

Made in USA

Hot Swappable 

Plug-In Design

API 011 

300 V Rating

API 011 FS 

300 V Rating

API CLP1

© 

09-21

api-usa.com

1220 American Way Libertyville, IL 60048 
Phone: 

800-942-0315

 

Fax: 800-949-7502

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