PIECAL 334Plus Milliamp Loop Diagnostic Calibrator

The PIECAL 334Plus allows you to easily check, calibrate and measure all the current signal instruments in a 4 to 20 milliamp DC loop. It can be used at any access point in the loop. You can source and read 0.000mA to 24.000 mA, simulate a 2-Wire Transmitter or use it to simultaneously power your 2-Wire Transmitter and measure its output. 

It features a backlight so you can easily see the display in poorly lit environments.

Quickly diagnose ground fault and current leakage with the 334Plus’ patented loop diagnostic technology (US Patent# 7,248,058).  Use it to calibrate recorders, digital indicators, stroke valves or any instruments powered by a 4 to 20 mA loop. Easily set any value quickly to within 0.001 mA with the adjustable digital dial, or use preset 4.000mA (0.00%) and  20.000mA (100.00%) EZ-CHECK™ settings.

Press and hold the dial in order to automatically step from 4 to 20mA in 2, 3 or 5  steps - or choose a continuous ramp.

Check loop wiring and receivers by using the PIECAL 334Plus in place of a 2 Wire transmitter. Uses any loop power from 2 to 100 V DC. Check controller outputs or measure the milliamp signal anywhere in the loop. The PIECAL 334Plus measures 0.000 to 52.000 mA (-25.00% to 300.00%) signals with greater accuracy than a typical multimeter.

The PIECAL 334Plus can simultaneously output 24V DC to power any and all devices in a process loop using the internal batteries and internal switching power supply, while measuring the output of a 2 Wire Transmitter and any other loop devices. Powers HART™ transmitters with built-in 250 ohm resistor simplifying hookups with HART communicators.

The PIECAL 334Plus can measure from -99.99 to +99.99 VDC with 0.01 Volt resolution. Use it to check loop power supplies, I/V converters, 1 to 5 Volt signals, and other voltages making it unnecessary to carry a multimeter.

PIECAL Calibrators are designed and built by members of the same team that designed and built the calibrators manufactured by Fluke* under the Altek* label. The PIECAL 334Plus improves upon other brands by including a rubber boot, tilt stand, backlit display with larger digits, rugged switches and a battery compartment for fast battery changes.