Signal Conditioning (SC)

Overview

Beyond the Basics...

Any system can come up against adverse dynamic conditions like:

Lightning transients

Utility-line fault clearance transients

Sensor response characteristics

Differences of ground potential

Power supply regulation

Signal/noise ratio, white or black noise

Radio frequency interference (RFI) System reverberation

Thermal gradients AC and DC actuator switching Logic ambiguities

The AGM Signal Conditioners go "beyond the basic" criteria. Our engineering design was made to augment the basics, and reduce the degree and frequency of system problems due to uncertain conditions.

They provide a comprehensive signal conversion and processing tool for the instrumentation engineer's use. Yet, in the field, it is a simple device for use by the process control operator.

Features

AGM's Signal Conditioning design considerations include:

System Noise and Interference -

Wide dead band to rectify equipment operation causing system "bumps".

Time delay to rectify pneumatic or hydraulic reverberation.

Response time to rectify ambient noise and erratic sensor signals.

Circuitry is potted in high vacuum, degassed, chemically inert RTV rubber that precludes chemical and bacterial degeneration causing circuit failure.

Optical isolation of module I/O/Power to virtually eliminate ground loop problems.

Automatic switching in all devices to accommodate lost of live-zero inputs signals.

Digital filters for narrow frequency band signals in a electrically noisy environment. Unusual Interface

The AGM Lab calibrates extremely narrow analog spans with high offsets at no charge. Calibration standards are traceable to the National Institute of Standards and Technology.

Specs

Available Signal Conditioners -

·   DC, AC, Thermocouple, Resistance Temperature Transmitters

·   Differential Temperature

·   Signal Alarm Module

·   Adder / Subtractor, Multiplier / Divider

·   Analog Characterization Module, Square Root Extractor, Etc.

·   Ramp Generator

·   Signal Selector

·   Integrator

·   Averager

·   Suppression Discriminator

·   Pulse to Pulse Scaling

·   Strain Gage

·   Sample / Hold

·   Rate Limiter

·   BTU Computer

·   Positioner

·   Mass Flow computer, Gas Flow computer

·   Pulse Accumulator

·   Analog / Pulse Duration, Pulse Duration / Analog

·   Pulse or Frequency / Analog, Scaled Pulse

 

Electrical -

·   Supply Voltage:

o  Module: 24 VDC

o  Assembly (with Power Supply Module): 115 VAC 60Hz

·   Inputs: Any AC, DC, RTD, T/C, Strain Gage, Contact Closure (specify)

·   Outputs: Any DC, Frequency, Relay Contact (specify)

 

Physical -

·   Dimension:

o  Module: 1 1/8 x 3 x 2 1/2 Inches (includes connectors)

o  PTA assembly: 2 3/4 x 8 1/2 x 3 3/4 Inches

o  TA assembly: 21 x 10 x 3 Inches Maximum

o  EIA assembly: 19 x 5 1/4 x 10 Maximum

o  NEMA 12/4 assembly: 4 x 6 x 4 (Typical)

o  Package: Circuitry hermetically sealed

·   Mounting:

o  Module:

§   Plugs into PTA, TA, or EIA Assemblies

§   DIN

§   Snap Track

§   Surface Mount

o  Assembly:

§   Surface (PTA, TA)

§   Rack (TA, EIA)

·   Connectors:

o  Module Pins: Gold plated over Beryllium copper

o  Screw Terminals. Wire Range : 22 - 12 AWG

 

Performance -

·   Calibration Accuracy: ±0.10 %

·   Linearity / Repeatability: ±0.10 %

·   Temperature Sensitivity: ±.005 % / degree C

·   Line voltage sensitivity: ±.0001% / 1% line change

·   Signal to DC Power Isolation: Standard

·   Input to Output Isolation: Optional, 1500 Vp-p

·   Extremely High Common / Normal Mode Noise Rejection

·   Zero Droop Sample-Hold and Ramp Generator Circuits

·   Output:

o  Current: (Automatic R loop correction)

§   1/5 mADC into 0-2400 Ohm std., 0-5000 Ohms optional

§   4/20 mADC into 0-600 Ohm std., 0-1500 Ohms optional

§   10/50 mADC into 0-200 Ohm std., 0-600 Ohms optional

o  Voltage: (Normally zero Ohm source impedance) 0 to 10 mADC into load

o  Control Relay: 10 AMP contacts, Resistive

o  Pulse: Any V or I source or Sink

·   Input Impedance:

o  1/5 mA is 200 Ohm, 4/20 mA is 50 Ohm, 10/50 mA is 20 Ohm

o  V and mV is Greater than 10 Mega ohms

·   CSA Certified: Yes for 115 VAC Assemblies

·   Operating Temperature: -30 to 80 degrees C

·   Operating Humidity: 5 to 95%

 

Warranty -

·   7-Years, Transferable

 

Graphical
Documents

Select a Product Function to view more options

DescriptionFunction
Convert an instrumentation DC Voltage or Current signal to an an isolated DC Voltage or Current signal DC to DC Converters
Convert any instrumentation AC Voltage or Current signal to an any isolated DC Voltage or Current signal AC to DC Converters
Convert any instrumentation Thermocouple signal to an any isolated DC Voltage or Current signal Thermocouple to DC Converters
Convert any instrumentation RTD or Potentiometer signal to an any isolated DC Voltage or Current signal RTD or Potentiometer to DC Converters
Accepts any instrumentation DC Voltage or DC Current signal and operates a relay based on setpoints, deadband and time delay adjustments DCV / DCI Signal - Single, Octal Base Alarms / Controllers
Add and subtract up to 4 DC Voltage or Current signals to create a single DC Voltage or Current signal or add up to 3 totalizer pulses Adders / Substractors Math Functions
Convert and linearize any instrumentation DC Voltage or DC Current signal to any DC Voltage or DC Current signal ( linearization can be exponential, log, anti-log or empirical) Exponentiators / Log - Antilogrithm Math Functions
Convert and linearize any instrumentation DC Voltage or DC Current signal to any DC Voltage or DC Current signal ( linearization can be exponential, log, anti-log or empirical) Linearizers - Empirical Math Functions
Multiply or divide any two instrumentation DC Voltage or DC Current signals with the resultant being any DC Voltage or DC Current signal A * B / C Math Functions
Generates an adjustable controlled ramp up/down/hold rate of any DC Voltage or DC Current signal Ramp Generators (Analog) Math Functions
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Package Options
Note: This table is based on the more commonly used Assembly / Enclosure Configurations.

Configurations not shown include multiple array, NEMA rated enclosures and custom packaging. Please contact us if you do not see what you are looking for.
Designation Description Application
(P)TA PTA Assembly
2 3/4" W, 8 1/2" H, 3 3/4" D 		Dust cover, bulkhead mounting for general use for signal conditioning, alarms, computers, controllers and transmitters. Uses product with TA prefix. Uses TA plug-in modules only.
DIN DIN Package
1 1/8" W, 3" H, 2" D 		Similar to the AUX mounting, except it can be combined with other DIN rail mounted devices to create unique systems.
AUX AUX Package
1 7/8" W, 3" H, 2" D 		Potted modular unit, bulkhead mounting for general use for signal conditioners, isolators and transmitters where space is at a premium.
HPM HPM
3" W, 2 1/2" H, 1 1/2" D 		Sealed unit for use with weatherproof and explosion proof housings for two-wire transmitters. Mounts to standard tapped holes in NEMA rated fittings.
(F)EA FEA Assembly
19" W, 101/2" H, 3 3/4" D 		For standard 19" rack monting. Any plug-in module with EA prefix for signal conditioning, alarm, computation, control, and transmitter purposes can be plugged into any socket position.
NEM NEMA rated boxes from manufacturers such as Hoffman, Killark, Crouse Hindes, etc. Used with either (P)TA, AUX, HPM, or (F)EA assembies.

Enclosures furnished by factory with equipment mounted.

Applications

Signal Conditioning covers a wide range of functions which include:

Analog Signal Conversion and Isolation

Signal Telemetry

Computation

Control

Alarm Detection

Specialty

See ” Product Applications ” for examples of how Signal Conditioning and other products are applied.
If you have an application that you are uncertain as to which Signal Conditioning product to apply, contact AGM's Technical Support Team and they will work with you to insure that the correct product is selected for your design requirements.

Also, if you have an idea for a new product, we would like to hear from you. AGM is continually developing products for new applications as they arise.

Contact Technical Support via Sending AGM a Message or calling (520) 722-1000

How To Order

The following is meant as a guide only. The Signal Conditioner may be ordered by simply specifying input, output, function, power and assembly / enclosure requirements. You may specify these in any order and add any comments you feel are important.

Note: Please contact our Domain Engineering staff if you are unsure of which Signal Conditioner to specify for your application. We will also work with you to develop OEM products.

Step 1: Select the AGM Product Number that corresponds to your typical input / output or function requirements using the Product by Input / Output Table  or the Product by Function Table.

Step 2: Identify your specific Input / Output calibration requirements. Note: Auxiliary current transformer for AC Current (0/5 ampere) inputs signals are furnished at no cost.

Step 3: Identify your available power.

Step 4: Select Assembly type. Refer to the Enclosure / Assembly Data Sheet  for options. Note: DIN mounting clips are furnished at no cost. AUX, HPM, & DIN assemblies complete as shipped.

Step 5: Place an order by sending AGM a Message or by Phone (520) 722-1000

Following are examples of Signal Conditioner orders:

1. Pulse Duration Transmitter, 4/20 mADC in, 3/12,15 sec out, 120 VAC powered, mounted in NEMA IV enclosure.

2. DIN4000-13, 1/5 VDC in, 4/20 madc out, 12 VDC powered.

3. HPM5100-15, 0/1000 PPS, mag pickup, 2 wire, loop powered.

4. AUX4006-0, 4/20 mADC in, 4/20 mADC out, exponent = 2.5, 24 VDC powered.

5. DC to DC Isolator, 4/20 mADC in and out, PTA assy, 120 VAC, 1600 ohm drive option.

Note: Be sure to include your name and a contact number in case we have any questions regarding your order