Action Instruments Action Pak® Signal Conditioner 

AP4000-AP9000 Series Selection Guide

Signal conditioners amplify and condition weak signals generated by process sensors. They send signals long distances without being degraded by electrical noise. They are also used to drive useful devices such as indicators, alarms, controllers, computer interfaces and other process instrumentation.

AP4000 - AP9000 Series
The AP4000 to AP9000 Signal Conditioners are compact, electronic plug-in modules that take direct sensor inputs and signals and convert them in to useful high level signals. They operate directly from 120VAC power or 24VDC on some models. 

The 4000 Series provides a complete line of interface and conditioning for temperature, pressure, flow, load and other process-sensing devices. 

Four-Wire Transmitters
The 4000 Series are called "four-wire" transmitters since they operate from external line power (typically AC) -- two wires for output signal, two wires for operating power. Outputs are conventional DC process signals such as 4-20mA or 0-10V, and are fully compatible with all important process instrumentation equipment, including other Action Pak modules. When AC power is impractical or not available, most 4000 Series are available with a DC option that can be operated from a 24VDC power source. 

Isolation
The practice of grounding remote sensors is usually advised to reduce noise pickup and protect equipment from being damaged by lightning or other high voltages. If both sensor and signal conditioner are grounded, it is possible to get an unwanted current, due to ground-to-ground potential differences, known as a ground loop. Ground loops degrade signal quality to the point of uselessness and can harm receiving equipment and personnel. 

Isolation eliminates existing and potential ground loops, eliminates common mode voltage and checks power surges. Also, isolation simplifies the connection of loop elements by eliminating the need for special grounding systems. 

Input Selection
Seven standard types of input are available to suit your process needs, other input types are available upon request.

• DC Voltage or Current 
• Thermocouple 
• RTD 
• Strain-Gauge 
• Potentiometer 
• AC Voltage or Current 
• Frequency 

Three-Year & Lifetime Warranties
Action Paks which contain our Application Specific Integrated Circuit (ASIC) have seventy percent fewer internal connections for higher reliability and carry a lifetime warranty. Other Action Paks are backed by Action Instruments' exclusive three-year warranty. 

DC Input, Field Configurable Isolator AP4380-2000/AP4380-2001
Provides a Fully Isolated DC Output in Proportion to DC Input  Eliminates Ground Loops with 1500V Input-to- Output Isolation  50% Adjustable Field Configurable Input Ranges: 10mV to 100V (200V om -2001), 1mA to 100mA  Four (4) Field Configurable Output Ranges: 0-5V, 0-10V, 0-1mA, 4-20mA  Easy Plug-in Installation/Low Mean-Time-to- Repair Selectable 120/240VAC Operation (9 TO 30VDC Available)  CSA Certified, UL Recognized  ASIC Technology for High Reliability  Lifetime Warranty
The field configurable AP4380 isolator offers wide ranging input and output capability for scaling and transmitting analog DC signals. The AP4380 will accept input voltage spans from 10mV up to 200 volts, as well as input current spans from 1mA to 100mA. The input zero and span potentiometers enable 50% input zero and span adjustability. For example, the 0-10V input range can be elevated to 5-10V, compressed to 0-5V or set to 2.5 - 7.5V. The AP4380 offers four (4) popular output ranges: 0-5V, 0-10V, 0-1mA and 4-20mA. The 4-20mA compliance is a powerful 20VDC. Model AP4380 can be configured to accept bipolar input ranges and offers selectable normal or reverse acting operation.  The AP4380 is a 3-port industrial isolator -- the output is optically isolated from its input up to 1500 VDC. The ASIC*-based I/O channel is independently transformer isolated from the selectable 120/240VAC power supply.

DC Input, Bipolar Output, Field Configurable Isolator

AP4382

The field configurable AP4382 isolator offers wide ranging input and output capability for scaling and transmitting analog DC signals. The AP4382 will accept input voltage spans from 10mV up to 100 volts, as well as input current spans from 1mA to 100mA. The input zero and span potentiometers enable 50% input zero and span adjustability. For example, the 0-10V input range can be elevated to 5-10V, compressed to 0-5V. The AP4382 offers two (2) bipolar output ranges: -5 to 5V and -10 to 10V. 

DC Input, Dual Channel Isolators

AP4390, AP4391, AP4392

The Action Pak AP4390 series of field configurable isolators is useful in eliminating ground loops, converting signal levels and providing signal drive. The AP4390 series' dual channel design conserves installation space in high density applications and offers superior cost-benefit value over single channel isolators. The wide ranging capability of the AP4390s provides universal spare part coverage. 

DC to Frequency Converters

AP7500, AP7501 

The AP7500 and AP7501 are useful in totalizing applications, where the total number of pulses counted in a given time period represents the time integral of the DC input. If, for example, the input represents a flow in gallons per hour, then the time integral of this flow signal (total count) will represent total gallons (see Figure 1). The AP7500’s 6V square wave output can be used to drive electronic counters (DTL, TTL, CMOS). The AP7501 can be used to drive electromechanical counters when connected to an external AC or DC power source. In the AP7501, the DPDT relay contacts are pulsed (closed) for only a short duration (100 milliseconds) for compatibility with standard electromechanical counters. The AP7500 can also be used in telemetry systems, where the dc signal is converted to a frequency, transmitted over long lines, and then decoded at the receiving end by means of a frequency to DC converter, such as the AP7380. 

AC Input, Isolated, Field Configurable Isolator

AP6380

The Action Pak AP6380 is useful in applications requiring a conditioned DC output from an AC source. Typical applications include energy management, load shedding, motor current/load monitoring, locked rotor detection, isolation and data acquisition. The output of the AP6380 can drive a digital meter for direct display or can interface with alarming or control devices including PLCs and computers. 

Thermocouple-Input, Field Configurable Isolator

AP4351

RTD Input, Signal Conditioners

AP4001, AP4151 

The two models of RTD input signal conditioners provide the following input to output relationship 
AP4001 Linear to resistance 
AP4151 Linear to temperature

Potentiometer Input Signal Conditioner

AP4003 

Frequency Input, Field Configurable Signal Conditioner

AP7380 

The input of the AP7380 can be configured for any frequency span from 2Hz to 10,000Hz. The input amplitude threshold can be adjusted from 150mVp to 10Vp to ensure accurate frequency measurement and minimize transient noise related errors. The maximum input amplitude is 150 Vrms. The output can be set for either 0-5V, 0-10V,0-1mA or 4-20mA.  Advanced digital technology allows the AP7380 to be field configured to convert virtually any frequency input to a DC signal output within the ranges specified. Calibration utilizes ‘Touch-Sample’ technology by which the user simply applies the desired input frequency, and touches a recessed button to configure the corresponding input range. 

The convenient Action Pak is very easy to install using surface mount, DIN rail mount or snap track mounting sockets. Trouble shooting is very easy since no wires need to be removed when swapping units. The wide ranging power supply can be configured for either 120 or 240VAC power. 

Frequency Divider / Scaler

AP7510 

Pulse Accumulator

AP7800 

Bridge Input, Field Configurable Isolator

AP4081

Wide ranging, precision zero and span pots allow 50% adjustablity of offset and gain within each of the 11 switch selectable input ranges. The output can be set for either 0-5V, 0-10V, 0-1mA or 4-20mA. 

This flexibility, combined with an adjustable (1 to 10VDC) bridge excitation source, provides the user a reliable, accurate instrument to isolate and condition virtually any bridge or strain-gauge input. 

High Input Select, Process Function

AP4502

Track-Hold/Peak-Hold Process Function

AP4570

DC Input Math Modules

AP4402, AP4408

DC Programmable Up/Down Ramp Generator

AP4830

DC Output Power Supply

AP9046 

Provides a Regulated 24VDC Output at up to 65mA Ideal for Two-Wire Transmitters  Easy Plug-in Installation  Regulated and Unregulated Outputs  Line Powered  Three Year Warranty

DC Output Power Supply

T609 

ULoop Power Supply The T609 power supply provides a regulated 24VDC output for powering two-wire transmitter current loops. The output is well regulated to ensure low noise, and can drive up to thirty 20mA loops or twelve 50mA loops. Short circuit protected up to 1 hour.