The P470 is a standalone 8-channel thermocouple simulator. It is intended for system-level testing of process control systems, FADEC engine controllers, and other critical systems.
It includes eight independent, isolated channels that can simulate all common thermocouple types or generate direct millivolt outputs, and includes thermocouple fault simulation. Outputs feature 20 bit resolution and damage protection up to 240 volts RMS.
Any P470 channel can use the internal reference junction sensor, either of two external RTD sensors, or software-simulated reference junction temperatures.
Both USB and Ethernet interfaces are provided. Control is via text commands or through the internal web page server. Only a web browser is needed to exercise all P470 functions, but the simple ascii command set facilitates integration into larger user scenarios.
The P470 includes built-in-self-test and a test connector which allow in-system calibration check without removing field wiring.
Four versatile digital I/O ports are provided, each CMOS/TTL compatible and capable of driving relays or LEDs.
|FUNCTION||8-channel isolated thermocouple simulation module|
Programmable per channel
Bipolar voltage range: ± 100 mV
Thermocouples: Types J K E T R S B N
|RESOLUTION|| Voltage mode, 20 bits: 0.2 µV/LSB
Temperature simulation mode, 0.1°C
|OUTPUT IMPEDANCE||45 Ω max|
|OUTPUT CHANNEL PROTECTION||± 350 volts peak (250 volts RMS) differential or common-mode, 5 KV ESD|
|RTD INPUTS||Two non-isolated thermocouple reference junction inputs for 100 ohm 4-wire PT 385 RTD|
|ALLOWABLE RTD TEMPERATURE RANGE||-40 to 120°C|
|RTD PROTECTION||Shorts to ground, 5 KV ESD|
|DIGITAL INPUT/OUTPUT|| 4 DIO channels, TTL/CMOS compatible
Outputs can sink up to 32 volts at 250 mA
Direct LED drive
|ONBOARD SENSOR||100R Platinum 4-wire RTD
± 0.5°C typical accuracy
|OPERATING TEMPERATURE||0 to 60°C|
|STORAGE TEMPERATURE||-40 to 70°C|
|CALIBRATION INTERVAL||One year|
|POWER|| 24 volt DC Typical
23.5 to 25.5 volt Acceptable
Nominal 200 mA
External supply included
|CONNECTORS|| 1 D25 female for 8 channels and two RTDs
1 D9 male for test
1 D9 female for DIO
1 securable 2.1 x 5.5 mm power barrel connector with center pin positive
|INDICATORS|| LEDs indicate power, communications and error
Additional LED is user programmable
|COMMUNICATIONS|| MicroUSB, serial port emulator, 115.2 kbaud
|CONFORMANCE|| Thermocouple tables based on NIST/ITS-90
RTD tables per IEC-751 for 385 curve RTDs
|TYPICAL||LIMIT 15/35°C||LIMIT 0/60°C|
|Channel Output Accuracy|| ± 5 µV Offset
± 50 ppm Gain
| ± 35 µV Offset
± 500 ppm Gain
| ± 70 µV Offset
± 1200 ppm Gain
|RTD Measurement Accuracy||± 50 ppm RTD resistance||± 150 ppm RTD resistance||± 400 ppm RTD resistance|
P470-1: 8-channel benchtop thermocouple simulator