Strain Gauge or Load Cell Indicator with RS232 Interface (PSD232)

Strain Gauge or Load Cell Indicator with RS232 Interface (PSD232) The RS232 version of the PSD load cell or strain gauge indicator enables the connection to many RS232 interface’s whether its a PC or simple data logger. The PSD232 is fitted with a 8 pin connector which allows users to […]

Strain Gauge or Load Cell Indicator with RS232 Interface (PSD232)

The RS232 version of the PSD load cell or strain gauge indicator enables the connection to many RS232 interface’s whether its a PC or simple data logger. The PSD232 is fitted with a 8 pin connector which allows users to connect the appropriate cabling for their application.

As with the standard PSD handheld, the PSD232 weighs only 250 grams and has a 7 digit LCD display with 6 tactile push buttons for access to on/off, gross/net, peak, trough, display hold and shunt cal functions. The indicator is micro processor based designed to interface with any full bridge sensor with an output sensitivity of up to 50mV/V. Bridge resistances from 85 ohms upwards can be used.

Two units of measure are able to be read and displayed such as kg & lbs. An annunciator indicates which range has been selected and there is a window, to insert a legend, describing each unit of measure.

The menu options accessed via the tactile keypad offers the ability to tailor the instruments response to the application including configuring the display update rate to either 0.5Hz, 1 Hz, 3Hz or 10Hz, setting auto power down, and overload. Calibration is also performed from the menu. Up to 450 hours battery life can be achieved whilst in power save mode with powering via 2 x AA Alkaline batteries (not included). An auto sleep/off function can be set ranging from 1 minute up to 99 minutes.

Both PSD’s are TEDS ‘Plug and Play’ (Transducer Electronic Data Sheets) enabled.

1 year warranty with accessory options of a black leather carry case with shoulder strap which allows full operation of the PSD232 whilst being carried in the case.

  • The RS232 version of the PSD allows connection to many interfaces including PC, data loggers, etc.
  • Portable digital display for use as a strain gauge indicator or load cell indicator. Easy to carry weighing only 250grams
  • Waterproof IP65 NEMA4 battery powered
  • 7 digit LCD display, with battery, peak, trough, net, overload and shunt cal indication
  • Battery powered with life of 450 hrs in power save mode
  • Tactile keyboard, with on/off, range select, peak/valley hold, and gross/net controls
  • Microprocessor based, allowing single pass calibration facility (direct mV/V)
  • Dual range for values such as Kg and lb
  • TEDS enabled for automatic sensor calibration (IEEE1451 – template 33)
Description
  Min Typical Max Units
Non linearity 0.001 0.005 % FR
Internal resolution 24 Bits
Resolution at 1 Hz sample rate 250,000 Counts /Divisions
Resolution at 10 Hz smaple rate 65,000 Counts /Divisions
Temperature effect on zero 0.0002 0.0007 ±/°@2.5mV/V
Temperature effect on span 0.0002 0.0005 ±%/°C
Offset stability 0.002  0.008 ±%FR*
Gain stability 0.003  0.01  % per annum
Excitation voltage  4.8  5  5.2  Vdc
Strain gauge impedance  85  350  5,000  Ohms
Sensitivity full range, setting 1  -5   5  mV/V
Sensitivity full range, setting 2  -50   50  mV/V
* from original offset at any time
Performance
Input Type Strain Gauge Full Bridge Sensors
Internal Battery 2 x AA Alkaline, access via sealed rear compartment, please note batteries are not included
Battery Life With 350R sensor continuously on 35 hours or up to 450 hrs in low power mode
Update Rate Strain Gauge Full 10mS to 2s Including Peak/Valley Hold capture rate
Indication
Display Type 7 digit LCD display, 8.8mm high digits
Display Resolution 1 part in 250,000 at 1s update
Annunciators Low battery warning peak, trough, hold, net, shunt cal, range, by LCD annunicators
Control Variables
Front Panel User Keys Tactile Keys for:-
ON/OFF/TROUGH Switches PSD power on/off/displays trough reading
RANGE Selects between two ranges,
PEAK displays peak reading
HOLD Switches Hold on/off
GROSS/NET Toggles between gross and net readings
SHUNT CAL Puts PSD units shunt calibration mode (100k resistor)
Settable Parameters Display Resolution
Rate 0.5, 1, 3, 10, 25Hz
Low power modes
Calibration By front panel keypad buttons protected by key sequence
Extra connector RS2342 comms port
Options
Serial RS232 Port, Streaming ASCIifor print, remote display and logging
Leather carry case
VisualLink, PC SCADA application
Environmental
Storage Temperature -40 to 65ºC (excluding batteries)
Operating Temperature -10 to 50ºC (excluding batteries)
CE Environmental Approvals European EMC Directive 2004/1108/EC, Low Voltage Directive 2006/95/EC

 

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