MILLIAMP
 Model
334A Loop Calibrator
Great
Value! High Performance!
Checks all
loop signals—mA, % of Span and DC V. Save time on
every mA transmitter, recorder, alarm trip, I/P and
computer you calibrate. Flip the QUIK-CHEK switch for
instant outputs of 4 and 20 mA accurate to 0.006 mA!
- All 4 to 20 mA
Loop Functions—
Source 0.00 to 24.00 mA or -25.0 to 125.0% read
mA or percent to 52.00 mA, simulate 2-wire transmitters,
measure -99.99 to 99.99 volts DC power & read
2-wire transmitters.
- Quik-Chek Switch—
Select 4 or 20 mA output or 2-wire simulation.
Accurate to ±0.006 mA.
- Full Range 10 Microamp
Resolution—
Adjust 4 digit display to ±0.05% without range
change.
- Long Battery Life—
3x9 volt alkaline batteries source 20 mA for over
20 hours, 12 mA for over 33 hours; 2-wire simulate
and read for 150 hours. Much longer than NiCd batteries
or calibrators with a single 9 V battery!
- Drive Capability—
1200 Ohms with current limited, fuseless protection
to 135 V AC/DC.
Optional: AC Adapter
TO
THE TOP
 ALTEK Process Loop Calibrator Model 434 Digital
Accuracy PLUS Analog Simplicity
Provides an unmatched combination of laboratory accuracy,
simplicity and convenience.
- Calibrate Loops
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 Functions—
0 to 24 mA Source, mA Meter, 2-wire Transmitter
Simulator & DC Volt Meter in a single compact
unit. Displays in mA & % 4 to 20 mA.
- Powers Loop or
Transmitter—
Including HART Transmitters —Drives 1200 Ohm
Loop Loads - selectable built-in 250 Ohm resistor
for compatibility with HART transmitters and communicators.
- User Settable QUIK-CHEKS—
Store HI, SET, LO for instant recall.
- AUTO-CHEK® Step—
Automatically switches output in 2,3,5 or 10 steps
from five seconds to 15 minutes.
- AUTO-CHEK® Ramp—
Automatic Ramp and Soak to smoothly stroke valves
or simulate a process.
- VALVE-CHEK®—
Output checks valve and actuator openings and
closings.
Easy-to-Use
Automatic Functions.
- Automatic Stepping
& Ramping
Be in two places at once by using the Model 434's
AUTO-CHEK®. Connect behind the panel or
replace a transmitter, then check the output in front
of the panel or another remote location within the
loop. Use the Automatic Ramp/Soak to simulate a running
process and check valves for smooth operation. Independently
select your ramp time, soak time and endpoints for
total flexibility.
- Easily Check Valves
& Actuators
Check valve and actuator operation with the built-in
VALVE-CHEK® function. Choose intervals
from 5 to 900 seconds to repeatedly step up &
down to check valves at and around the fully closed
position (3.8, 4.0 & 4.2 mA) and the fully open
position (19.8, 20.0 & 20.2 mA). Or manually step
through the points and turn the knob for fine adjustment.
A Compact Milliamp Calibrator.
That Fits In your Pocket.
- Basic Milliamp
Functions —
Source 0.00 to 24.00 mA or -25.0 to 125.0%, read
mA or percent to 24.00 mA, simulate 2-wire transmitters,
power and measure 2-wire transmitters.
- Basic Accuracy—
±( 0.08% of 24 mA Span + 1 LSD)-Source to read
within 0.03 mA.
- Quik-Chek Outputs—
HI and LO push-buttons for instant output of 20.00
or 4.00 mA. Speed sensitive digital potentiometer
adjusts output from any QUIK-CHEK position for valve
stroking.
- Power Up Transmitters—
Drives to 700 ohms loads.
- Long Battery Life
— Sources 12 mA for over 22 hours, 20 mA for
over 16 hours. Turns itself off after 30 minutes.
- Dependable Operation
— Fuseless protection to 120 V AC/DC.
Optional
Carrying Case
TO THE TOP
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