Practical-instrument-electronics 334Plus Manual do Utilizador descarregar pdf (Página 4)

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

Page 4

mA OUT, % OUT (Percent of 4 to 20 mA)

Choose this function to provide an output from 0.00 to 24.00 milliamps. The compliance voltage is a

nominal 24 VDC to provide the driving power to your milliamp receivers.

1) Disconnect one or both input wires from

the device to be calibrated.

2) Select “mA” or “% 4 to 20mA” with slide

switch

3) Select “SOURCE” using slide switch w.

4) Connect the output leads of the PIECAL

334Plus to the inputs of the device being

calibrated, making sure to check polarity.

Red lead to the plus (+) input and black

lead to the minus (-) input.

The output is adjusted in 0.001 mA (0.01%)

increments by turning the knob

r while the

EZ-CHECK™ switch

e is in the “DIAL”

position, or the current can be set at the

fixed points of 4.000mA (0.00%) or

20.000mA (100.00%) with switch e. Press

and turn the knob for faster dialing with

0.100 (1.00%) increments.

Start automatic stepping or ramping by pressing and holding the

r DIAL KNOB for 3 seconds. The

word STEPPING or RAMPING will flash on the display anytime the selected automatic function is

running. The 334Plus will automatically step or ramp between 4mA & 20mA (or 20mA & 4mA) for 30

seconds then reverse direction. Stop the stepping or ramping by pressing or turning the knob or

moving any switch.

Sourcing Milliamps



















Using Automatic STEP & RAMP output

Move q POWER SWITCH to “mA”, or “% 4 to 20 mA” and

the w SOURCE / READ / 2 WIRE SWITCH to “SOURCE” or “2 WIRE”.

The starting point for automatic stepping & ramping is based

on the

e EZ-CHECK SWITCH. Place the EZ-CHECK switch

at 20 mA and the automatic stepping or ramping will start at

20.000 mA (100.00%) and the values will decrease. Place the

EZ-CHECK switch at 4 mA and the automatic stepping or

ramping will start at 4.000 mA (0.00%) and the values will

increase.

Start automatic stepping or ramping by pressing and holding the

r DIAL KNOB for 3 seconds. The

word STEPPING or RAMPING will flash on the display anytime the selected automatic function is

running. The 334Plus will automatically step or ramp between 4mA & 20mA (or 20mA & 4mA) for 30

seconds then reverse direction. Stop the stepping or ramping by pressing or turning the knob or

moving any switch.

Using Automatic Stepping & Ramping

STEPPING OUT

12.000 mA

1 2 3 4 5 6 7 8 9 10 11 12

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