Altek 434KP Process Loop Calibrator Manual

Milliamp Calibrator
Model 434-KP
¥ Calibrate with laboratory accuracy
±(0.015% of reading + 0.002 mA)
Accurate to 0.005 mA from 4 to 20 mA
¥ All 4 to 20 mA loop functionsSource and read milliamps
Simulate 2-wire transmitters
Power transmitters & displays transmitter output
Measure voltage from -100.0 to +100.0V DC
¥ Full range 1 microamp resolution0.000 to 24.000 mA and
-25.00 to 125.00% of 4 to 20 mA
¥ Powers loop or transmitterDrives to 1200 ohm loads Ð enough for any
transmitter or loop 
¥ Standard...

Fast milliamp calibrationCalibrate the input of a recorder, computer, valve positioner or any
other milliamp input device using the Model 434-KP to source
milliamps or to simulate a 2-wire transmitter.  The source mode
uses the batteries of the Model 434-KP to power the loop, or in 2-
wire Simulate mode, uses the power supply in the loop.
Store the milliamp values corresponding to the Span and Zero of
the device being calibrated into the HI and LO Quik-Chek
memories (typically 4.000 and 20.000 mA). Press...

General instructions
Turn-onEach time you turn on the Model 434-KP the LCD
will display all segments for about 1 second. It then
displays the most recently selected scaling for the
function selected by the selector knob.
SOURCE - The three QUIK-CHEK outputs will be
the same as previously stored. The same three
QUIK-CHEKs are used for the SOURCE & 2 WIRE
SIM functions.
READ - The 434-KP is ready to measure milliamps
or DC Volts and is automatically updating the MAX
& MIN readings for recall at any time....

mA, mA % (Percent of 4 to 20 mA)Choose this function to provide an output from 0.000 to 24.000 mA. The
compliance voltage is a nominal 24 VDC to provide the driving power to
your milliamp receivers or to drive a whole loop.
1) Disconnect one or both input wires from the device to be calibrated.
2) Press the POWER push-button to turn the Model 434-KP on and turn
the selector knob to SOURCE MILLIAMPS.
3) Connect the red SOURCE lead of the calibrator to the plus (+) input
of the device and the black SOURCE...

mA, mA % (Percent of 4 to 20 mA)Choose this function to measure loop current or controller outputs from
0.000 to 24.000 mA or -25.00 to 125.00%. 
1) Open the current loop at any convenient point along the signal path
2) Press the POWER push-button to turn the Model 434-KP on and turn
the selector knob to READ MILLIAMPS.
3) If the diode symbol      appears on the display press the SETUP
push-button and only READ and mA or READ, mA and % are
displayed. 
4) Press the MILLIAMP/PERCENT push-button to toggle...

Automatic functions
There are three automatic functions - Auto-Chek, Ramp & Valve-
Chek. These automatic functions operate in the SOURCE
MILLIAMPS and 2 WIRE SIM modes. Each automatic function is
quickly selected and indicated on the LCD. All automatic operation
are configurable and the configurations are remembered even
when the power is off. Whenever an automatic function is
selected, the previous configuration is recalled and
the function will be indicated on the LCD. When no automatic
functions are...

Ramp
Returning to manual operation
Setup1) Select SOURCE MILLIAMPS or 2 WIRE SIM
2) Press the AUTO CHEK RAMP/VALVE push-button until RAMP
appears on the LCD.
3) Press the SETUP push-button and the words AUTO-CHEK,
RAMP and SEC appear on the display prompting you to enter
the number of seconds between steps. Press the Up and
Down push-buttons until the correct number of seconds per
ramp (from 5 to 900) appears on the LCD. Press the SETUP
push-button to continue.
4) The words AUTO-CHEK, RAMP, SOAK and SEC...

Measure DC Volts
Altek Industries, Inc.   
PO Box 1106, Everett, WA 98206
1520 75th Street SW, Everett, WA 98203
For more information:
U.S.A. (800 322-5835
Fax (800) 265-6340
Service fax (425) 446-6331
E-mail: [email protected]
Web: www.altekcalibrators.com
PN 1887816 Rev B December 2002
©2002 Altek Industries, Inc. Specifications subject to change without notice. 
All rights reserved. Printed in U.S.A.  
Altek products are warranted to be free from defects
in material and workmanship (excluding...