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Applications
Model Application pdf Application Description
All API Application Notebook 64 page API Signal Conditioner Applications Notebook (3.3Mb pdf) or request a free printed copy
All Signal Conditioning Signal conversion, boosting, alarming, isolation definitions
All Signal Conditioning Terminology Terms and definitions
All with Alarms Deadband What is deadband?
All RFI / EMI The effects of radio frequency interference (RFI) and electromagnetic interference (EMI)
All with Alarms Relay Protection & EMI Suppression Switching inductive loads
All Ohm's Law & Wire Resistance E = I x R
All Ground Loops What is a ground loop?
All with Loop Supplies Using the Built-In 4-20 mA Loop Power Supply How to use the 4-20 mA loop power supply built in to API modules
Temperature Common Thermocouple Sensors List of common thermocouple types
All Frequently Asked Questions FAQ: Signal conditioning, DC Inputs, Current Loops, RTDs, Thermocouples, Frequency, Strain Gauges, Valve Actuators
Model Application pdf Application Description
1040G SPR DC Transmitter with Alarm Convert 4-20mA to 0-5V, power the input loop, and use an alarm setpoint
1600G Heater Break Alarm Monitoring critical heater operation
6010G-5A, 1000G Motor Current Monitor & Over Current Shutdown Monitor and record motor current and provide over current shutdown
6010G-5A Monitor & Display AC Motor Load Motor load is to be monitored by a computer & displayed locally
6010G-5A Monitor Computer & Process Status Set alarm if power is lost to either process or computer, or if computer locks up
Model Application pdf Application Description
4003GI, 4408G A-B Milling Machine Automation Monitor mill cutter motor load and use the feedback signal to optimize material feed rate
4300G M01 Motor Load Control Monitor mill cutter motor load to optimize material feed rate
7010G, 7500G Remote Monitoring of Motor Speed Monitor mixing machine speed with a computer located 1500 feet away across an electrically noisy area
6010G-5A Monitoring Motor Speed Using Current Using motor current draw to indicate of motor speed
4300G Ext Sup Monitoring Motor Speed Using a PLC Using a powered 4-20mA VSD output with a powered 4-20mA PLC input
4300G MO Manual Override of Computer Control Operate a pump at a fixed speed if the computer fails or is shut down for maintenance
Model Application pdf Application Description
4058G, 1090G Chemical Plant Weighing, mixing, tank level
4059G, SUM-100 Platform Scale Scale with 4 load cells
4059G, SUM-100 Truck Scale Scale with 4 load cells. Total weight is to be displayed, printed out and sent to a computer
4059G, SUM-100 Dispensing System Automation Scale with 3 load cells. Total weight is to be displayed and sent to a PLC 
4059G 6-Wire Strain Gauges Using a six wire bridge with sense leads to compensate for variations in lead resistance
4051G, 4058G, 4059G Troubleshooting Strain Gauge Type Sensors Troubleshooting a pressure transducer or load cell/strain gauge bridge
Model Application pdf Application Description
Temperature Common Thermocouple Sensors List of common thermocouple types
4001G SA-B Monitor & Control Differential Temperature Monitor differential temperature across a heat exchanger and provide an output signal for  process control computer and a local display
1420G Motor Overheating Alarm & Shutdown Motor is to be shut down if it exceeds its rated temperature by 10 degrees
4001G SA-B, 3200G Maintain Constant ΔT Across a Heat Exchanger Maintaining a constant differential temperature across a heat exchanger
1040G Over-Temperature Alarm with Retransmission Drive an over-temperature alarm trip, an analog temperature signal for a chart recorder and a PLC input -- for a total required drive of 750 Ωs
Model Application pdf Application Description
1090DIN Pumping Pressure Hi/Lo Alarm Pumping system pressure Hi/Lo pressure alarm
1080DIN Pumping High Pressure Shutdown Pumping system high pressure shutdown
4059G Pressure Sensor vs. Pressure Transmitter Using a pressure sensor instead of a pressure transmitter for high temperature applications
4408G A-B, 4300G, 1000G Phase Separator Water Level Control Maintain a tank's water level so that there is a 1% ΔP between two pressure sensors
4300G Ext Sup Monitor Pressure with a PLC Use a powered 4-20mA pressure transducer output with a powered 4-20mA PLC input
4051G M01 Pressure System Calibration Calibrating a pressure monitoring system without having to use external test equipment
4051G M02 Pressure Transducer Calibration Calibrating a pressure transducer with an internal calibration resistor
4051G, 4058G, 4059G Troubleshooting Strain Gauge Type Sensors Troubleshooting a pressure transducer or load cell/strain gauge bridge with wire color codes
Model Application pdf Application Description
4440G Air Flow Measurement Pitot tube, P/I converter and API Square Root Extractor
1000G Monitoring Bi-Directional Flow Alarm Trip Module to select which flow meter is input to a PLC
7580G HVAC Variable Air Volume Control Convert frequency output of controller to 1-10V for exhaust air valve
LPI-2 or DPI-2 Monitor & Record Mass Flow & Ratio Gas turbine ground loop prevention
4003GI-Ext Sup Controlling Damper Position Potentiometer output from air damper to 4-20mA input for PLC
7010G Hall-Effect Flow Sensor Convert square wave output of sensor to 4-20mA input for PLC and local display
4380DIN Control & Monitor with One Flow Meter 4-20mA flow meter output for both control and 0-5V recorder input
7580G Control and Record Water Flow Convert flow meter frequency output to 4-20mA for control & recorder input
4300G Monitor Product Moved by Conveyor Power 4-20mA rate sensor & output 4-20mA for control, computer input & local display
1000G, 4003G-IS, 3200G Fail Safe Valve Control Command valve to full open If PLC 4-20mA signal is lost
3200G-M420 Flow Control with Flow Meter Feedback Operate a valve to accurately control the flow of liquid chemical in a pipeline where the feedback signal is 4-20 mA from a flow meter
7580G, 1080G Auto-Ranging Flow Meter Automatic selection of flow meter for input to PLC
7500G-M02 Monitoring & Totalizing Flow Add a totalizer to a process flow monitoring system
7580G, 7500G-M02 Monitoring & Totalizing Flow Meter Output Add a totalizer to a process flow monitoring system
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