Practical-instrument-electronics 525 Rev F User Manual download pdf

Practical Instrument Electronics

Model 525

Dual T/C & RTD Calibrator

With Auto Stepping

Operating Instructions

841 Holt Road #1 • Webster, NY 14580 Tel: 585-872-9350 • Fax: 585-872-2638 [email protected] • http://www.piecal.com/

525-9002 5/26/05 1-8

Basic Keypad Operations

1 EZ-Check™ Switch

For Simulation - Slide the switch to select from three user stored

values for the desired calibration points. The user can select HI, DIAL,

and LO positions. These values can easily be changed to suit the

calibration requirements. Also these stored values can be use for Auto

Stepping.

For Read - Slide the switch to the DIAL position. The Model 525 will

begin making readings. Slide the switch to high and you will get the

highest point read and then slide the switch to the low position and

you will get the lowest range.

2 SIMULATE/OFF/READ Switch

Turn the Model 525 on to SIMULATE to output a

temperature, ohms, or mV. Turn the unit to READ

to read temperature, ohms, or mV.

3 EZ-Dial™ Knob

Turn the knob to change temperature in 0.1º or

0.01º increments. Push and turn for faster dialing.

Double push to get into the model 525

Configuration mode to auto Battery on/off, C° or

F°, RTD or T/C types, Store or step feature, select

step size and step time. Then press to store

desired EZ-Check™ HI/LO points in SIMULATE

mode. Push to clear EZ-Check™ HI/LO points in

READ mode.

Note: The Model 525 is a Universal Temperature

Calibrator that works great calibrating Multi-

channel Chart Recorders, Data Acquisition &

Computer Systems and Smart transmitters.

The Model 525 is GUARANTEED to work with ALL

transmitters, recorders and any other RTD input

devices that use intermittent, or pulsed excitation

current to measure the resistance of the RTD. The

Model 525 automatically adjusts to the correct

excitation current.

Model 525 Configuration

Instructions for Enabling and Disabling the Configuration Options

1. Turn the Model 525 on to SIMULATE or READ.

2. Double Click the EZ-Dial™ Knob at any time to enter configuration menu.

3. Select options by turning the EZ-Dial™ Knob clockwise until the arrow points to the

desired option.

4. The option can be enabled or disabled by tapping the EZ-Dial™ Knob.

The Model 525 configuration menu will exit automatically after 5 seconds of inactivity and go

to normal operation with the options selected. These options are recalled at turn on until they

are changed again.

NOTE: Changing the battery will reset menu options to factory settings.

Model 525 Configuration Menu

Auto Off ON/OFF

If Auto Off is ON, the unit will turn off after 30 minutes to save battery life, if there is no user activity. If Auto Off is OFF the unit will

stay on until it is turned off from the keypad. This is typically useful for manual loading or continuous use. Press the EZ-Dial™ Knob

to select.

Display Units °C/°F

Pressing the EZ-Dial™ Knob to toggles between °C or °F.

Mode - RTD or T/C

You are able to select the different, RTD types - Pt100 α=3850, Pt100 α=3902, Pt100 α=3916, Pt100 α=3926,

Cu10 α=427, Cu50 α=428, Ni110 Bristol, Ni120 α=672, Ω

T/C types - B, E, J, K, N, R, S, T, or mV

To change RTD or T/C type, press the EZ-Dial™ Knob. Turn the EZ-Dial™ Knob to scroll through the list of available types. Press

again to save and return to the configuration menu.

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Summary of Contents

Page 1 - With Auto Stepping

Practical Instrument Electronics Model 525 Dual T/C & RTD Calibrator With Auto Stepping Operating Instructions 841 Holt Road #1 • Webster, NY 1

Page 2 - Read Mode