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PA1001A Pre-Amplifier

The Motion Sensors (MSI) PA1001A series preamplifiers allow convenient interfacing with process measuring devices and digital electronics.


This series of preamplifiers/signal conditioners is available in variable reluctance (VR) and RF sensor configurations as well as a combination unit that provides user selection of either VR or RF sensor input.

Installation Drawing
 

 
Optional features include factory installed pulse scaling and field or factory installed analog output modules. The analog output module provides both current and voltage outputs proportional to RPM, flow-rate, etc.


Features and Specifications

Input Power:
  Voltage: 8 to 30 VDC

Current draw: 125 mA @ 24 VDC
(all options equipped)

Reverse polarity protected

   
RF Sensor Input:
  Modulation carrier frequency: 25 KHz

Input frequency: 2 Hz to 5 KHz, user-adjustable trigger level to eliminate false pulsing

Carrier adjustment to allow precise tuning of carrier signal to physical environment
(e.g., air gap, wall thickness)

Maximum air gap: 0.160"

Preferred coil inductance: 1.0 mH +/- 10%

Max. distance from sensor to preamp: 100'

   
VR Sensor Input:
  Input protected, RF and band pass filtered

Input frequency: 0 to 10 KHz, user-adjustable trigger level to eliminate false pulsing (higher frequencies also available)

Trigger sensitivity: 4 mV RMS min (note: at 4 mV frequency range 10 Hz to 3 KHz)

Input impedance: 40K ohms (nominal)

Max. input signal: 600 volts RMS

Max. distance from sensor to preamp: 100'

   
Pulse Output Options:
  All output options are user selectable

Open collector Vmos transistor, maximum OFF voltage 30 VDC, maximum ON state current 400 mA

TTL/CMOS fanout of 5 TTL/CMOS loads

0 to 10 VDC square wave

Square wave tied to input voltage

   
Temperature Range:
  Operating: -40°F to +185°F
(-40°C to +85°C )

Storage: -40°F to +302°F
(-40°C  to +150°C )

 

Optional Features:
  Pulse Scaling
Divisions of 2, 4, 8, 16, 32, 64 or 128 (user selectable)
   
Analog Output Module:
  Current Output

Accuracy +/- 0.05% of full-scale &
+/-200 PPM/°C
Available range 4-20 mA

Output suitable for driving, floating, or grounded loads

Maximum loop impedance 500 ohms

Response time 3 seconds for 10% to 90%

Voltage Output

Accuracy +/- 0.05% of full-scale &
> +/-200 PPM/°C

Available range: 0-5 VDC or 0-10 VDC, user selectable

Impedance:<10 ohms

Response time: 3 seconds for 10% to 90%

   
Enclosures:
  Unit is intended for mounting in a conduit box and comes with 2" and 2.5" center mounting holes. Enclosure is not required but recommended to protect unit from moisture, dirt, etc.

Optional explosion proof box available upon request

Enclosure requirements: GUAx16,26,36 or equivalent

   
Approvals: <!Row 5, Column 4>
  CE compliant to EMC Directive 89/336/EEC for use in residential, commercial, light industrial and heavy industrial environments
   
Warranty:
  Unconditional one (1) year warranty if used within specifications
   
Physical Dimensions:
  Board diameter: 2.75"

Center mounting holes: 2" and 2.5"

Height (standard): 0.625" (NOTE: with analog output option add 1.325"; may change with different connector types)

Product Features

VR and RF

Model Number Description Enclosure Cover Type
PA1001A-1 standard standard lid
PA1001A-1PS with pulse scaling standard lid
PA1001A-1A with analog module 2" dome lid

For Use with RF Sensor Only
 
Model Number Description Enclosure Cover Type
PA1001A-2 standard standard lid
PA1001A-2PS with pulse scaling standard lid
PA1001A-2A with analog module 2" dome lid

For Use with VR Sensor Only
 
Model Number Description Enclosure Cover Type
PA1001A-3 standard standard lid
PA1001A-3PS with pulse scaling standard lid
PA1001A-3A with analog module 2" dome lid

 

 
 
   
Copyright © 2007 - Motion Sensors, Inc. - North Carolina (NC) - Phone: 252-331-2080 Fax: 252-331-1666 info@motionsensors.com           Sitemap