Model 520/521
Thermocouple Simulators
Practical Instrument Electronics
Features
Direct Temperature Output
Calibrate in temperature for your T/C type
Adjust temperature output in 0.1° or 1°
8 Standard T/C Types Available
Types J, K, E, T, R, S, B, N and mV
Custom types and ranges are available
Ranges from –148°F to F.S. for most types
°C & °F Cold Junction Compensated
High Accuracy
±(0.015% of mV Setting + 0.009mV)
Typical accuracy of ±0.35°C (0.6°F) for Type K
EZ-Dial Knob
Easily adjust output by 0.1° (Model 521) or 1° (Model 520)
Pressing down and turning will select a faster dialing speed
EZ-Check Switch
User selectable EZ-Check for 0% and 100% span adjustments
Store new EZ-Check values by pressing the EZ-Dial knob
Uses a standard 9V Alkaline Battery
Superior battery life of 45 hours under typical continuous usage
Easy access to battery compartment
Lightweight and Rugged with a Solid Feel
Small, tough and protected to 60V
Datasheet
Models pictured above:
Model 520 – 1° Resolution, Single Type or Custom Type
Model 521 – Selectable 8 types, 0.1° with selectable °C or
°F and 0.001 mV resolution (J, K, E, T, R, S, B, N and mV)
APPROVED!
Description
The Practical Instrument Electronics’ Model 520/521 Thermocouple Simulators simulate a standard thermocouple curve over the
entire industrial temperature range. Choose between eight standard T/C types or millivolts. The Model 520 can also be supplied with
a custom thermocouple curve and range for your specific application. Contact the factory for details.
The Model 520/521 sources precise temperatures for inputs to all types of instruments such as transmitters, recorders, controllers,
alarms, data acquisition, and computer systems. The Model 521 provides a miniature T/C connector and the Model 520 provides 18”
extension wire. Both are internally cold-junction compensated for changes in ambient temperature. The PIE Model 520/521 offers the
highest performance and functions in its class by exceeding the accuracy and functions of many higher priced thermocouple
calibrators.
The EZ-Check function allows the user to store three output temperatures for real convenience. This will save time for repetitive
calibrations by instantly recalling the three stored temperature values. Three output settings can be stored, and all settings are
saved, even with the power off.
The low cost PIE Model 520/521 is an “easy as PIE” to use thermocouple source for checkout and calibration of all thermocouple
instruments in the field, shop or control room.
Practical Instrument Electronics, Inc. Copyright 2003. All rights reserved.
520-9001 2/28/05
1-2
Model 520/521 Datasheet
Specifications
General Specifications:
(Unless otherwise indicated all specifications are rated from a nominal 23 °C, 70 % RH for 1 year from calibration)
Temperature Range -25 to 60 °C (-10 to 140 °F)
Relative Humidity Range 10 % ≤RH ≤90 % (0 to 35 °C), Non-condensing
10 % ≤RH≤ 70 % (35 to 60 °C), Non-condensing
Size 4.9 X 3.15 X 1.82 inches (125.5 X 80 X 46.2 mm)
Weight 7.2 oz (204 grams)
Battery 9V Alkaline provides 45 hours of continuous use
Miscellaneous Low battery indication with nominal 1 hour of operation left
Overload Protected to 60V for 30 seconds or less
High contrast graphic liquid crystal display with 0.357” (9.07 mm) high digits
Source Thermocouple Specifications (ITS-90 Curves):
Millivolt Uncertainty
Temperature Coefficient of mV Source
Output Noise
Output Impedance
Cold Junction Uncertainty
Cold Junction Sensor Temperature Coefficient
General Temperature Accuracy ±(0.015% of mV setting + 0.009mV) ± 0.25°C (0.5°F)
Output Dial Adjustment Resolution 0.1°C or °F for Model 521/1°C or °F for Model 520
Span -13.000 - 80.000 mV
T/C Type B 594 – 1820˚C (1101.2 – 3308.0˚F)
T/C Type E -260 - 1000˚C (-436.0 – 1832.0˚F)
T/C Type J -210 – 1200˚C (-346.0 – 2192.0 ˚F)
T/C Type K -245 - 1372˚C (-409.0 – 2501.6˚F)
T/C Type N -229 - 1300˚C (-380.2 – 2372.0˚F)
T/C Type R 24 - 1768˚C (75.2 – 3214.4˚F)
T/C Type S 21 - 1768˚C (69.8 – 3214.4˚F)
T/C Type T -251 - 400˚C (-419.8 – 752.0˚F)
±(0.015% of mV Setting + 0.009 mV)
±0.005mV/°C Ambient
±5µVpp from 0.1 Hz to 10 Hz
0.2Ω
±0.25°C (0.5°F)
±0.05°/° in ambient temperature (°C or °F)
Ordering Information
with T/C extension wire: Model 520-* (* is one of B, E, J, K, N, R, S, T, or mV) T/C Source (Single Type/1° resolution)
with miniature T/C connector: Model 520-M*
T/C Source (8 Types, mV/0.1° resolution) Model 521
Warranty
Our equipment is guaranteed against defective material and workmanship (excluding batteries) for a period of three years from the
date of shipment. Claims under guarantee can be made by returning the equipment prepaid to our factory. The equipment will be
repaired, replaced or adjusted at our option. The liability of Practical Instrument Electronics (PIE) is restricted to that given under our
guarantee. No responsibility is accepted for damage, loss or other expense incurred through sale or use of our equipment. Under no
condition shall Practical Instrument Electronics, Inc. be liable for any special, incidental or consequential damage.
Practical Instrument Electronics, Inc. Copyright 2003. All rights reserved.
520-9001 2/28/05
2-2
Loading...