Meriam M334 4-20 Milliamp Loop Calibrator - Manual

Product Description
• EASY TO USE
With the Meriam Model M334 you can check,
calibrate and measure all your current signal
instruments in a 4 to 20 milliamp DC loop. It can
be used at any access point in your loop. Source &
Read 0.00 to 24.00 mA, Simulate a 2 Wire
Transmitter or use the Meriam Model M334 to
simultaneously power your 2 Wire Transmitter and
measure its output. When desired the Meriam
Model M334 can display current in milliamps or
percent of 4 to 20.
• SOURCE MILLIAMPS
Calibrate recorders, digital indicators, stroke valves
or any instruments that get their input from a 4 to
20 mA loop. Easily set any value quickly to within
0.01 mA with the adjustable digital potentiometer
“ DIAL” or use preset 4.00 mA (0.0%) and 20.00
mA (100.0%) EZ-CHECK™ settings.
• RECALL OUTPUT SETTINGS
The EZ CHECK™ switch provides rapid checking
of 4.00, 20.00 and any convenient third point
between 0.00 to 24.00 mA.
• CALIBRATE USING LOOP POWER
Check loop wiring and receivers by using the
Meriam Model M334 in place of a 2 Wire
transmitter. Simulate a changing process input to
check loop response and control settings. The
Meriam Model M334 uses any loop power from 2
to 100V DC.
• READ LOOP CURRENT
Check controller outputs or measure the milliamp signal anywhere in the loop. The Meriam
Model M334 measures 0.00 to 52.00 mA signals with greater accuracy than a typical multimeter.
The Meriam Model M334 can be easily switched to display milliamps or percent of 4 to 20.
• POWER & MEASURE 2 WIRE TRANSMITTERS
The Meriam Model M334 can simultaneously output 24V DC to power any and all devices in a
process loop using the internal batteries and the internal switching power supply, while
measuring the output of a 2 Wire Transmitter and any other loop devices. This is handy for
checking the functionality of transmitters in the field or on the bench.
• READ DC VOLTS
The Meriam Model M334 can measure from -99.99 to +99.99 VDC with 10mV resolution. Use it
to check loop power supplies, I/V converters, chart recorders, 1 to 5 Volt signals, and any other
voltages within this range making it unnecessary to carry an additional multimeter.
Meriam Model M334
4-20 mA Loop Calibrator
Operating Instructions
Meriam Model M334
4-20 mA Loop Calibrator
Operating Instructions
Meriam Process Technologies
10920 Madison Ave. • Cleveland, OH 44102 Tel: 216.281.1100 • Fax: 216.281.0228 • [email protected] • www.meriam.com
Copyright © 2008 All rights reserved • M334-9002 - 22 July 2008
process technologies