Application Notes

How to Monitor RTDs for Temperature Differential App Note

Defining the Problem: Monitor three RTD’s on a stack and transmit two differential 4-20mA signals representing -7 to 18°F. Each RTD transmitter is calibrated -20 to 120°F. Solution: Model 892M-0500 math module (qty. 3) Model 800C-SIP software interface pkg. (qty. 1) Model PS5R-VD24 power supply (qty. 1)   Download PDF for complete application note.

How to Calculate the Discharge Rate Q (g.p.h.) Output of a V-notch Weir Application Note

Defining the Problem: Calculate the discharge rate Q (g.p.h.) output of a V-notch weir. Provide a 4-20mA output for flowrate and frequency output for totalization and alarm output for high-level alarm. Solution: Model 892M-0500 DC output math module Model 895M-0800 freq. output math module Model 800C-SIP software interface package Optional: Model PS5R-VD24 power supply  …

How to Use an AC Current Sensor Application Note

Using Acromag’s AC Current Sensor Model 5020-350 Transmitters with DC current input can be used used in conjunction with an external AC Current Sensor to precondition an AC current input signal. This sensor is a highly accurate toroidal instrument transformer that converts an AC current signal to a safe, low-level, DC milliampere signal (0 to 11.17mA)….

How to use Thermocouple Transmitters to Monitor Temperatures in Paint Systems App Note

This document illustrates using Acromag’s TT330 Series to monitor high temperatures in an automotive paint curing oven and transmit to the existing PLC 4-20mA input card/software setup. Defining the Problem The area around an auto manufacturer’s paint curing ovens is at elevated temperatures affecting the performance of locally installed instrumentation. Placing Signal Conditioners rated for…

How to Reduce PLC Costs with Signal Conditioners App Note

Defining the Problem: A small scale bottling operation will be controlled by PLCs. Multiple sensors including conveyor speed (frequency), bearings temperature (RTD), liquid level (4–20mA) and tank pressure (4–20mA) will connect to the PLCs. An affordable solution to convert these various signals to one common signal type will allow procurement of one type of PLC…

How to Measure Voltage of Multiple Cascaded Cells App Note

Defining the Problem: A proper method is needed to measure each cell voltage within a series of cells and withstand high nominal or open circuit voltages. The maximum series voltage is greater than the common-mode range of the connected instruments. This requires isolated floating inputs to measure each cell voltage. Channel-to-channel isolation will extend the…

How to Use Signal Conditioners with Built-in Data Logging App Note

Defining the Problem: A manufacturer of sensors and electrical controls does burn-in testing for troubleshooting purposes. A test system that can operate with either an Android® or iOS® mobile device is preferred. System Requirements: The application requires a product that can monitor a variety of signals, provide analog or limit alarm outputs and have data…