Practical Instrument Electronics 525 Rev F - Manual

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/
Practical Instrument Electronics, Inc. Copyright © 2004. All rights reserved. 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.