Absolute Process Instruments API 4003 G I Quick Start Manual Download Page 1

Potentiometer Input to DC Transmitters, Isolated 

API 4003 G I

Input:

 100 

 to 1 M

 Potentiometers

Output:

 

0-1 V to ±10 VDC, or 0-1 mA to 0-20 mADC, 4-20 mA

 

O

Accepts Most Full-Range Potentiometers

 

O

Factory Ranged Voltage or Current Output

 

O

Hot Swappable

 

O

Full 2000 V Input/Output/Power Isolation

 

O

Input and Output LoopTracker

®

 LEDs

 

O

Functional Output Test Button

 

Q

Over, Under, Out-of-Range Position Monitoring

 

Q

Remote Control of Positioning Devices

 

Q

Simplify Control of Potentiometer Outputs

Applications

Options—add to end of model number
EXTSUP

 

Open collector output when a “sinking” output is  
required for an external loop supply 

U

 

Conformal coating for moisture resistance

Accessories—order as separate line item
API 008

 

8-pin socket

API 008 FS

  8-pin finger-safe socket 

API CLP1

  Module hold-down spring for high vibration or  

mobile applications

Model

Input

Output

Power

API 4003 G I

Any full-range potentiometer from 

0-100 Ohm to 0-1 Mega Ohm

Factory ranged 

specify output range in  

volts or mA

115 VAC

API 4003 G I A230

230 VAC

API 4003 G I P

85-265 VAC or 60-300 VDC

API 4003 G I D

9-30 VDC

Description

The API 4003 G I accepts a resistance input from potenti-
ometer, slidewire, linear position, displacement, or rotational 
devices and provides an optically isolated DC voltage or current 
output that is linearly related to the potentiometer position.
The API 4003 G I will accept any potentiometer with a value 
of 0-100 

 through 0-1 M

 without recalibration and without 

affecting accuracy. 
The API 4003 G I output is factory ranged. Consult factory for 
offsets and/or input ranges other than 0 to 100% of the poten-
tiometer range or see the APD 4008.
The full 3-way (input, output, power) isolation makes this mod-
ule useful for ground loop elimination, common mode signal 
rejection, and noise pickup reduction.

Sink/Source Output Options

The API 4003 G I has a 20 VDC loop excitation supply for the 
output. This power supply can be used to power a passive 
mA device. 
Order the API 4003 G I EXTSUP for an unpowered mA output for 
devices that are powered externally.

LoopTracker 

API exclusive features include LoopTracker LEDs (green for 
input, red for output) that vary in intensity with changes in the 
process input and output signals. 
They provide a quick visual picture of your process loop at all 
times and can greatly aid in saving time during initial startup 
and troubleshooting. 

Output Test 

An API exclusive feature includes an output test button to 
provide a fixed output (independent of the input) when held 
depressed. The output test greatly aids in saving time during 
initial startup and/or troubleshooting. 
The test output level is factory set at 50% of output span.

Mounting 

The API 4003 G I plugs into an industry standard 8-pin octal 
socket sold separately. Sockets API 008 and finger-safe API 
008 FS allow either DIN rail or panel mounting.

Free Factory 

I/O Setup!

Potentiometer Input Ranges

3 wire connection and full potentiometer travel is required  
Consult factory for other ranges and configurations 
1 VDC excitation provided to potentiometer
Minimum range: 

0-100 

Maximum range: 

0-1 M

Input Impedance

100

 to 1 M

Ω 

minimum

Common Mode Rejection

100 dB minimum

LoopTracker

Variable brightness LEDs indicate I/O level and status

DC Output Range

Factory ranged, please specify output range and type
Voltage: 

0-1 VDC to 0-10 VDC, 10 mA max 
including offset ranges such as 1-5 V

Bipolar voltage:  ±1 VDC to ±10 VDC 

including offset ranges such as –1 to 4 V

Current: 

0-1 mADC to 0-20 mADC 
including offset ranges such as 4- 20 mA 
20 V compliance, 1000 

 at 20 mA

Calibration

Multi-turn zero and span potentiometers for output 
±15% of span adjustment range typical

Output Loop Power Supply

20 VDC nominal, regulated, 25 mADC, max. ripple <10 mV

RMS

Order EXTSUP option for unpowered mA output

Output Test

Sets output to test level when pressed 
Test level factory set to approx. 50% of span 
Call factory for custom setting

Output Ripple and Noise

Less than 10 mV

RMS

Linearity

Better than ±0.1% of span

Ambient Temperature Range and Stability

–10°C to +60°C operating ambient 

Better than ±0.02% of span per °C stability

Response Time

70 milliseconds typical

Isolation

2000 V

RMS

 minimum 

Full isolation: power to input, power to output, input to output

Installation Environment

IP 40, requires installation in panel or enclosure 
Use with API 008 or API 008 FS socket 
Socket mounts to 35 mm DIN rail or can be surface mounted 
UL 508C pollution degree 2 environments or better

Power

Standard: 

115 VAC ±10%, 50/60 Hz, 2.5 W max. 

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

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

D option:  

9-30 VDC, 2.5 W typical

2.75"

Variable Brightness 
Input LED
Output Test Button

Output Span

Output Zero

Variable Brightness 
Output LED

1.75"

2.38"

Hot Swappable 

Plug-In Design

 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

API 008 

600 V Rating

API 008 FS 

300 V Rating

API CLP1

E145968

115 VAC, 230 VAC  

models

www.mod-tronic.com | [email protected] | 1-800-794-5883

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