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Signal Conditioning FAQ - DC Inputs

1. Do you have a signal conditioner that will source up to an 800 mA output?
No. The highest outputs available are 100 mADC non-isolated (API 4010 G) and 50 mADC isolated (API 4300 G). The API 4300 G EXTSUP will sink up to 200 mADC with an external power supply.

2. We have a 4-20 mA input and require 4 set points at the output. Do you have a product for this?
Yes, you can connect 2 of our API 1020 G units in series in the 4-20 mA input loop since the input impedance for current is 50 ohms and the drop is very low.

Signal Conditioning FAQ - Current Loop Inputs

1. Are the API LPI-1 and the API LPI-2 UL recognized or listed?
No. These should not be required for UL listing since the operating current and voltage are below the covered standards.

2. We have an API DPI-2. Can we have an input of 0-20 mA and an output of 0-20 mA?
No. The loop powered device requires a minimum of 4 mA to supply power to the module.

Signal Conditioning FAQ - Thermocouple Inputs

1. Will an API 4000 G work with an input temperature range of 1000 to 2000°F?
Yes, however to utilize the charts for selecting the switch positions in the field, we need to convert °F to °C. This would give 550°C to 1100°C which can be selected from the charts.

Signal Conditioning FAQ - Frequency Inputs

1. Do you have a product that can provide an output signal of 5 KHz, 50% duty cycle, 20 mA max and 24 V p-p max with no input?
Yes, the API 7500G M03.

2. We have an application which requires a signal conversion of ½ Hz to 6 Hz input to a DC output. Do you have a signal conditioner to do this?
No. The minimum input frequency range that we offer is 0 to 15 Hz.

Signal Conditioning FAQ - General

1. Do you recommend placing a fuse at the power input (115 VAC) for protection?
It is not required, but if desired, a ½ Amp Fast Blow fuse can be used for each module.

Signal Conditioning FAQ - RTD Inputs

1. Do you have a temperature differential unit that will measure a difference of 10° C between the two inputs?
Yes, the API 4001 G SA-B, but the two RTDs will require very precise matching (±0.1%) and it would be helpful to know the operating temperature point so the factory can calibrate the unit precisely.

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