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PALC

PALC Model 3 (NEW!)

Programmable / Acquisition / Controller / Logger

Upgraded version An improved data acquisition "toolbox" with several additional features in addition to all of the features of the previous SOSI Model 2. In addition to data acquisition, control and alarm functions, DATA LOGGING memory has been added to compliment the stand-alone controller feature.

Major feature additions include

  1. Data logging with 65,000 sample non-volatile EEPROM memory. Two memory modes - overwrite previous data, or append data to allow starting and stopping data logging while saving previous data.
  2. Additional A/D channel for a total of 6 analog inputs.
  3. Quadature Encoder Interface.
  4. 5.12 V, 100 mA reference output (twice the 50 mA of Model 2).
  5. User enabled conversion of individual channels.
  6. Six independent controller set-points which may be set to monitor any analog input and activate any output (versus two set-points pre-assigned to each channel in Model 2).
  7. New case design with plastic cover and screws supplied.
Programmable Acquisition Controller Logger Model 3
$119.00
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Features

  • Seven channels: (5) 10-bit A/D, (1) RPM (60/t), (1) either frequency or event counting.
  • Six of these channels are independently configurable to be a digital input or output.
  • All channels have two programmable setpoints which control any output for control or alarm purposes.
  • High current (1.5 A) MOSFET output switches 12V loads and power relays.
  • Precision 5.12V voltage output for supplying external sensors and circuits.
  • Sample triggered by internal time-base, logic input or serial interface.
  • Long life battery operation for field use.
  • Settings saved in non-volatile memory. Auto-resume option resumes run mode after battery replacement.
  • 9600 baud serial interface requires no propietary software. No operating system dependency.
  • Menued text interface in plain English with text typing auto-completion feature.
  • No software drivers to install. Log data with serial communication program. Plot data using any graphing program
Frequency counter, event counter or digital input.
RPM (60/t) or digital I/O.
1.5 A Mosfet switch. Analog to digital conversion / digital I/O / External TRIG IN.
Precision 5.12 V power reference with 50mA output current capability. Analog to digital conversion (0 - 5.12 V) / digital I/O. Each channel is independently programmable as an analog or digital channel.
Each channel features two (2) independent setpoints, programmable for (>=) or (<), that can set High or Low any digital output.
9600 Baud serial ASCII text interface communicates in plain English and provides on screen menu selections.
LED signals each conversion. Sync. out terminal.
Four 4-40 mounting holes. Tough, ABS protective base. Two alkaline AA cells last 1 month continuous operation. Programmable sleep mode hibernates unit when not in use.

Specifications
Parameter Specification
All Inputs Max. Input Voltage: -0.3 to 6.0 V
Max. Input Current: 200 mA all inputs combined.
A/D converter Inputs Range: 0 - 5.12 V
Resolution: 10 bits (5.0 mV/bit)
Accuracy: ±10 mV
Programmable software gain: 1 to 64
RPM Input Speed: 60 - 65535 RPM (for sample period 1 sec).
Interface: 5 V TTL level input.
Programmable software divide: 1 to 8
Frequency/Event Counter Input Frequency: 0 - 30,000 Hz
Counter: 16 bit, 1 - 65535
Counter Clock Edge: high to low transition.
Interface: 5 V TTL level input.
Digital Outputs CMOS output levels, 25 mA maximum output current.
Digital Inputs (ST) Logic Low < 1.0 V
Logic High > 4.1V
Digital Outputs (TTL) Logic Low < 0.8 V
Logic High > 2.1 V
Mosfet Power Switch Max. Current: 1.5 A switched to GND, open drain.
Max. Open Circuit Voltage: 13.5 V, zener diode protected.
On Resistance: 0.11 ohm
Sample Period Fast Mode: 100/200/500/1000 msec
Slow Mode: 00:01 to 10:59 min:sec
Voltage Reference Output Voltage: 5.12 V ± 0.5%
Current: 50 mA
Other: linear regulated, 0.3 ohm output switch.
Input Supply Voltage 1.8 V to 3.0 V supplied by 2 AA cells.
Current Drain (all outputs unloaded, no floating digital inputs) 3.4 mA typical while active and driving an active RS-232 serial port.
1 mA typical while active but not driving a port (used as a controller for example).
30 uA typical in sleep mode.
Battery Life (2200 mAh alkaline cells, outputs unloaded) 30 days continuous service while converting and sending by RS-232 to host computer.
8 years in sleep mode.
Communication RS-232 9600 Baud, 1 stop bit, no parity, no handshaking. ASCII only
Data Format Data Output: Text row. Time (HH:MM:SS) or sample count (NNNNNN) column, followed by seven columns of data. Delimiter is space.
Output data terminator: CR+LF or CR only,
Input data terminator: CR+LF, CR, LF (auto-detected).
Indicator LED Color: green. Indicates sample action.
A test pin near the LED provides a 2 V pulse during a sample. This may be used to signal external instruments.
Dimensions 3.40 x 1.85 x 0.94 incuding connector (inch)
3.15 x 1.85 PC board size
Four 0.125 diameter mounting holes
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