Absolute Process Instruments APD 44H4 _ Specify VDC or mADC range

Cecomp Electronics, APD 44H4, DC to DC Signal Conditioner High Select Function from 4 Inputs, 85-265 VAC, 60-300 VDC Power

Features:

Versions to Follow the Highest or the Lowest Input
1200 V Input/Output/Power Isolation
Input LoopTracker® LED
Zero and Span Output Calibration Potentiometers
Functional Test Button
Built-In Loop Power Supply for Output

Applications:

Track Highest or Lowest of Multiple Input Signals
Monitor Maximum Flow From Multiple Pumps
Sensor Redundancy

The APD 44H4 accepts 4 voltage or current inputs, depending on the model. They provide an optically isolated DC voltage or current output that is linearly related to the highest or lowest of the inputs, depending on the model.

They are used where the highest or lowest of multiple inputs are required to drive the output, or where sensor redundancy is needed. Full 3-way isolation (input, output, power) makes this module useful for ground loop elimination, common mode signal rejection or noise pickup reduction. The inputs are not isolated from each other.

The APD 44H4 Transmittor can be wired to allow a mA output to be either sinking (passive) or sourcing (active).

LoopTracker

API exclusive features include a green LoopTracker LED that varies in intensity with changes in the process input signal. It provides a quick indication of your process input at all times and can greatly aid in saving time during initial startup and/or troubleshooting.

Functional Test

An API exclusive feature includes the Functional Test Button to provide a fixed output (independent of the input) when enabled. The test output level is potentiometer adjustable from 0 to 100% of output span. The functional test button greatly aids in saving time during initial startup and/or troubleshooting.

Specifications Table:

Input	0-50 mV to 0-10 VDC, ±25mV to ±10VDC, 0-1 mA to 0-20 mADC, ±0.5 to ±20 mA Factory Configured: High select from 4 inputs. Specify 4 input ranges.
Output	0-1 V to ±10 VDC or 0-2 mA to 0-20 mA, 4-20 mA. Specify VDC or mADC range.
DC Input Range	Factory configured, please specify each input range. Consult factory for special ranges and/or functions. Each input can have different ranges and/or units. Specify order of math functions if required. Milliamp inputs are sinking. Voltage: 0-50 mVDC to 0-10 VDC Bipolar voltage: ±25 mVDC to ±10 VDC Current: 0-1 mADC to 0-20 mADC Bipolar current: ±0.5 mADC to ±20 mADC
Input Impedance	Voltage: 50 kÎ© minimum Current: 50 Î© nominal
Balance Between Inputs	Better than ±0.5% of span
DC Output Range	Factory configured, please specify output range Voltage, 10 mA max.: 0-1 VDC to 0-10 VDC Bipolar voltage: ±1 VDC to ±10 VDC Current: 0-2 mADC to 0-20 mADC, 20 V compliance, 1000 Î© at 20 mA Milliamp output can be field wired for sink or source
Output Calibration	Multi-turn zero and span potentiometers for each output channel±15% of span adjustment range typical
Output Loop Power Supply	20 VDC nominal, regulated, 25 mADC, <10 mVRMS max. ripple. May be selectively wired for sinking or sourcing mA output
Output Test	Front button sets output to test level. Enabled via pushbutton. Default setting approximately 50% of span Potentiometer adjustable 0-100% of span
Output Ripple and Noise	Less than ±0.2% of span
Linearity	Better than ±0.25% of span
Ambient Temperature Range and Stability	10°C to +60°C operating ambientBetter than ±0.02% of span per °C stability
Response Time	50 milliseconds, nominal per channel used
Isolation	1200 VRMS minimum Full isolation: power to each input, power to output, each input to output. Non-isolated: input to input
Housing	IP 40, requires installation in panel or enclosure For use in Pollution Degree 2 Environment Mount vertically to a 35 mm DIN rail
Connectors	Four 4-terminal removable connectors, 14 AWG max wire size
Power	85-265 VAC, 50/60HZ or 60-300 VDC, 4W maximum

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