Yokogawa VMA0055 Data sheet

General
Specifications

VMA0055 Sensor Module

mV, V, and mA Measure & Simulate plus 24 Vdc Isolated

Loop Supply for use with YPC 4000 and YPC 4010

• Source precise voltage or mA signals to check calibration or
operation of receiving devices

- Key in exact output value desired

- Increase or Decrease output value by
pre-defined increments
Auto-step tests are user defined for start and

­stop values, number of steps, dwell time, and
manual or automatic advance

• Read volts or mA from YPC meter while sourcing volts or mA from
module

VMA

- Test input isolation buffers with one YPC;
apply mA value to buffer input with VMA
and measure mA value output of buffer

- Select mA or V measurement on YPC meter
from the VMA output display without
interruption of output

• Simulate transmitter output in externally powered loop

- VMA modulates loop current to any selected
value

- Increase or Decrease simulated value by pre­defined increments

- Auto-step tests are user defined for start and
stop values, number of steps, dwell time, and
manual or automatic advance

The VMA0055 is a dc voltage and current measurement and
simulation module for use with the Yokogawa YPC 4000 Series

Multi-Function Tester

DVM and loop calibrator for terrific versatility. When used with other
YPC functions, the VMA / YPC combination provides valuable
functionality not available in other devices. Measurement ranges
include ±500 mV, ±55 V, and ±100 mA. Sourcing capabilities include
±1000 mV, 0 – 24 V and 0 – 24 mA. The VMA module will also
simulate transmitter outputs when connected to a loop or it can be
used to temporarily supply 24V dc loop power to unpowered devices
during commissioning or calibration activities.

VMA0055 goes far beyond the
capability of the YPC base unit and has its own isolated power supply
so common ground problems are note an issue. Consider the
following advantages for YPC users:

• Power a transmitter directly from VMA

- Use YPC 4000 and 4010 to calibrate transmitters
anywhere, anytime.

- Concurrently use YPC base unit V / mA meter to

simultaneously check transmitter output

- Use YPC 4010 HART® communications to

commission or reconfigure unpowered
transmitters

• Measure mV, V or mA as you would with a dc DVM

- Reduce the number of tools the technician carries

- Resolution to 1/100,000 counts

- Select desired V range for best possible accuracy

. The module features the functionality of a

50 volts / mA measurement

±

Available certifications include:

• NIST traceable – standard

• CE Mark

• Intrinsically Safe – MET Laboratories
per CSA C22.2 & UL 913 Class I
Division I, Groups A, B, C & D

VMA Module Accessories

P/N A900529-00015 VMA Test Lead Kit ­banana plugs on 9" breakouts (both ends),
assorted connectors (required for source and

simulate functions)

Yokogawa Corporation of
America
Dart Road, Newnan, GA 30265, USA ©Copyright November 2004

GS 61A

YPCVMA-01E-A

Vma Setup

Auto-Step 1:

Start
Mode: mA Source

Low pt: 4.000 mA
Upr pt: 20.000 mA
Steps: 5
Auto-Step 3

Dwell Time: Manual

Up Down Select Back

VOLTS

COM

mA

Milliamp

Receiver

Loop Load

VMA

Module

Measure

S1: 24.00 V

S2: 0.000 PSIG
S3: 72.05 deg F

IV: 0.000 mA

Pon Poff More

Sample

Transmitter Simulation M ode

Xmitter Sim

Output = 16.000 mA

IV = 16.042 mA

Up Down Select Back

VOLTS

COM

mA

Power
Supply

Loop Load

VMA

Module

+

YPC Displays and Wiring Diagrams for VMA0055 module with YPC 40xx

24V dc Loop P

ower

V or mA Sourcing

All Rights Reserved ©Copyright November 2004,
Subject to change without notice.

ransmitter Sim

T

Yokogawa Corporation of America GS 61A YPCVMA-01E-A

ulation Mode