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.
The P470 is compatible with the Highland model J470 isothermal thermocouple termination box and with the J475 DIN rail termination panel.
FUNCTION | 8-channel isolated thermocouple simulation module |
RANGES |
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 digital I/O channels, TTL/CMOS compatible 32V max input voltage 250 mA max sink current 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 VDC typical (23.5 to 25.5 V) Nominal 200 mA External AC/DC 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 |
PACKAGING | 7.0" (L) x 8.5" (W) x 2.25" (H) Aluminum enclosure |
INDICATORS | LEDs indicate power, communications and error Additional LED is user programmable |
COMMUNICATIONS | Micro-USB serial port emulator, 115.2 kbaud 10/100 Ethernet |
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 | - | ± 500 ppm of RTD resistance | ± 1000 ppm of RTD resistance |
Block Diagram: P470 8-channel benchtop thermocouple simulator
P470-1: 8-channel benchtop thermocouple simulator
J24: 24 volt 1.2 amp power supply
J27: 2.1 x 5.5 mm barrel to pigtail power cable
J55: 6′ shielded D25 male to D25 male cable
J56: 10′ shielded D25 male to D25 male cable
J71: Dual D9 female to Agilent 34104A cable
J75-1: D9 female to two(2) dual banana plug cable
J470: 8-channel D25 female isothermal termination box
J475-2: 8-channel D25 female Din rail termination panel w/ reference junction sensor