I am hooking up an RTD to the terminal block:
777232-01 (TBX-68T Rack Mountable Terminal Block with Cold Junc. Sensor) and that is read by a NI board:
777789-01 (NI 4351 for PCI, Temperature and Voltage Measurement Instrument) NI PCI-4351
What is the proper way to use this board to read the three wires from the RTD? See the answer from Omega below when I contacted them. I purchased the NI PCI-4351 board specifically for reading the RTD...
Can you please help
MICHAEL,
Wiring for the PR-11-2-100-1/16-6-E (3-wire 385 Pt 100 ohm sensor element)
Probe:
One RED & two BLACK wires; the RTD sensor element is across the RED wire & either of the BLACK leads; the two black wires are connected to the same point on the RTD sensor and used for lead wire resistance compensation. At room temp the RTD will measure approx 108 ohms across the RED & BLACK leads, and measure a short across the two black leads. Beyond this, I cannot help you with the connections to the National Instruments. However, an RTD is a resistive element (resistance is directly proportional to temp increase) and does not require COLD JUNCTION COMPENSATION like a thermocouple.
Rich Giordano
Applications Engineer
Omega Engineering
-----Original Message-----
From: mvestel@lbl.gov [mailto:mvestel@lbl.gov]
Sent: Monday, June 07, 2004 9:20 AM
To: Giordano, Richard
Subject: E-mail - Case ID: 338817
CASE id: 338817
DATE: 6/4/2004
TIME: 7:23:31 PM
SENDER: Customer
SUBJECT: E-mail
TO: temp@omega.com
FROM: Michael Vestel
COMPANY NAME: Berkeley Lab
COMPANY ADDRESS: LUSTER, Engineering Division One Cyclotron Road, M
CITY: Berkeley
STATE: CA
COUNTRY: USA
ZIP: 94720
PHONE NUMBER: (510) 486-6596
FAX NUMBER: (510) 486-6596
E-MAIL ADDRESS: mvestel@lbl.gov
MESSAGE SUBJECT: how to hook up RTD three wires to Nat.Inst. Boards
MESSAGE: I purchased the RTD, Part number PR-11-2-100-1/16-6-E:
http://www.omega.com/pptst/fine_diameter_RTD_probes.html
PR-11
I need to find out what the three wire hook up needs to be. Can you please help me? There is no info I can find.
I am hooking it up to the terminal block:
777232-01 (TBX-68T Rack Mountable Terminal Block with Cold Junc. Sensor) and that is read by a NI board:
777789-01 (NI 4351 for PCI, Temperature and Voltage Measurement Instrument) NI PCI-4351
