Practical Instrument Electronics 334 - Manual (Page 6)

Accessories
AC ADAPTOR (200 to 240 VAC) Part No. 020-0100
AC ADAPTOR (100 to 120 VAC) Part No. 020-0101
Ni-MH 1 Hour Charger w/4 Ni-MH AA Batteries Part No. 020-0103
Guarantee
The Practical Instrument Electronics PIECAL Model 334 is guaranteed to be a functional replacement
for the Altek Model 334 or Altek Model 334A as described in the product comparison. Claims under
this guarantee can be made by returning the equipment prepaid to our factory. The equipment will
be repaired, replaced, adjusted or money back at our option. The liability of Practical Instrument
Electronics (PIE) is restricted to that given under our guarantee. No responsibility is accepted for
damage, loss or other expense incurred through sale or use of our equipment. Under no condition
shall Practical Instrument Electronics, Inc. be liable for any special, incidental or consequential
damage.
Warranty
Our equipment is warranted against defective material and workmanship (excluding batteries) for a
period of three years from the date of shipment. Claims under warrantee can be made by returning
the equipment prepaid to our factory. The equipment will be repaired, replaced or adjusted at our
option. The liability of Practical Instrument Electronics (PIE) is restricted to that given under our
warrantee. No responsibility is accepted for damage, loss or other expense incurred through sale or
use of our equipment. Under no condition shall Practical Instrument Electronics, Inc. be liable for any
special, incidental or consequential damage.
SETTING UP VALVES
When setting up a valve it is important to correctly set the end stops. Use the PIECAL Model 334 wo
supply the 4 to 20 mA control signal to stroke the valve. Select “SOURCE” and the PIECAL Model
334 will use the internal power source fpr outputting current or switch to 2-WIRE SIMULATOR to
stroke a valve using any pre-existing installed loop power supply as the power source.
Example:
1) Disconnect the 4-20 mA control wires from the Current-to Pressure (I/P) converter or the actuator.
2) Connect the PIECAL Model 334 following the connection diagrams on the prevous pages for
Simulate 2-Wire Transmitters
3) Move the EZ-CHECK™ switch e to “4.00 mA”/”0.0%” and adjust the fully closed stop on the
actuator.
4) Turn the PIECAL Model 334’s knob r slowly counterclockwise and verify that the actuator and
valve don”t move. Repeat steps 3 & 4 until no movement is detected.
5) Move the EZ-CHECK™ switch e to DIAL and quickly back to “4.00 mA”/”0.0%” then turn the
PIECAL Model 334’s knob r clockwise. The actuator and valve should begin to move.
6) Move the EZ-CHECK™ switch e to “20.00 mA”/”100.0%” and adjust the fully open stop on the
actuator.
7) Turn the PIECAL Model 334’s knob r slowly clockwise and verify that the actuator and valve
don”t move. Repeat steps 6 & 7 until no movement is detected.
8) Move the EZ-CHECK™ switch e to DIAL and quickly back to “20.00 mA”/”100.0%” then turn
the PIECAL Model 334’s knob counterclockwise. The actuator and valve should begin to move .
Application Notes
Practical Instrument Electronics
82 East Main Street Suite 3.14 • Webster, NY 14580 Tel: 585.872.9350 • Fax: 585.872.2638 • [email protected] • www.piecal.com