|
Signal Conditioning (SC)
|
|
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.
|
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.
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
|
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.
|
(P)TA
|
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
|

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
|

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
|

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
|

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.
|
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.
Phone Number for Technical Support - (520) 722-1004 or you may send an
Email
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 using the
Submittal Form, phone, fax or email.
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
|
|
|
|
|