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1) Is this a new installation or a new problem with an existing, previously satisfactory flowmeter? 2) Is the 1400 m3 volume value from the flowmeter's internal totalizer or from an external totalizer? 3) How do you know the flowmeter is completely full of water?

There's nothing wrong with the transmitter, it's accurately reporting exactly what's happening - the emptying of the low leg impulse tube. That may not be what you want, but that's what the system performance is and that's what the transmitter is telling you. The measurement system is set up...

I presume the first simulation is Prova 123 K T/C output to temp transmitter. It isn't clear what the 2nd simulation is. What is outputting to which input? In the first simulation, has the Prova 123 calibrator been calibrated with traceable standards recently? You have the certificate...

The symptoms you're seeing are a classic example of exceeding the common mode limitation of the analog input. But the specs say both the AO module and the DCS AI use isolation. This is not typical for devices using isolation. A Yokogawa spec sheet states "allowable common mode voltage ±1 V...

Classic ground loop symptoms When you connect a battery powered simulator, it's floating with respect to earth. It reads or provides a floating source that works OK. But when you connect a device whose ultimate (-)/common reference is an earth ground at a potential different than the...

Stilling wells are inside the tank or vessel, so getting an impulse line to connect at the bottom elevation point becomes an issue. How does that work? I have seen a DP transmitter retrofitted to an external bypass sight gauge, the vertical pipe with the flags that get flipped by the magnet...

Any one that goes deep enough. The question is, how deep? GE Druck's PTX 1730 says it does up to 600m H2O with cables/vents up to 575m, although it isn't clear whether you need to measure 400m of water or the well happens to be 400m deep. Many times the measurement is 50m of water above the...

> What does Ethernet port with web server mean? It means that the Ethernet port supports HTML and has a web server that will respond with a web page when a web client, like Internet Explorer, Firefox or Chrome is connected and the client queries the server. You have to realize, Ethernet...

shortened URLs for the thermocouple polynomials above Thermocouple polynomials http://tinyurl.com/nb58grg Mosaic thermocouple polynomials http://tinyurl.com/oaj4395

The word 'Turndown' is used in two ways. One use of the word turndown is to define how far a device can be re-ranged and still maintain a cited accuracy spec. Industrial transmitters that use HART are typically designed to be re-ranged and turndown would apply to those types of pressure...

It might work. I didn't see any software for configuring it. That type of serial server is typically configured on both the serial side and the LAN side. It's not an industrial serial server with its wall wart coax power plug but it might do the job of converting 232 or 485 to an Ethernet...

The term in "FSO" in your spec means (percent) of full scale uncertainty. My selection of a 100 bar model and yours, a 70 bar model both have a 0.5% of full scale uncertainty. 0.5% of 100 bar = plus or minus 0.5 bar 0.5% of 70 bar = plus or minus 0.35 bar That value applies to ALL...

A colleague informed me that an NaK transmitter is a pressure transmitter with a local fill fluid of sodium-potassium used for high temperature applications. There are a couple models that appear in a Google search that are fixed range transmitters, with zero and span adjustments, but without a...

The definition you found is a correct definition of rangeability. I have no idea what a NaK filled transmitter is, what its process input is or what degree of accuracy it might be capable of. In light of my ignorance, I'd say that if it's a commercial device, you can check the spec sheet...

I think Roy got it - manual station. I thought almost any PID controller had an auto/manual or hand/auto mode switch, but maybe not. Sometimes the HMI for PLC or DCS doesn't implement it. If you're still looking, the guys in the mills use the Honeywell UDC 2500 current output controller...

When you say that 0-500 mbar = 0-20,000 Kg/hr, was that calculation done using the same medium (properties) that is flowing through the pipe and the primary flow element? If so, on the DCS side, you just need to square root the 0-100.0% 4-20mA signal and scale it by the density ratio...

1) HCD (Hybrid Control Designer) software is backwards compatible to V1.0 controller firmware, with the limitation that any rogram/configuration can only support elements native to its version, meaning features added in V4.1 are not available in V1.0, but you can program, edit, save and...

Your power supply and wiring are not providing the minimum voltage to the XNX (a gas detector). The XNX is NOT a 2 wire transmitter, like a pressure transmitter. 2 wire transmitters use about 1/2 watt (24V * 0.020mA). It takes considerable power to run an XNX. The table on page 32 of the...

I know of no commercial device that does what you describe. Beamex manufactures process instrument calibrators. One of the functions of those calibrators is a 'simulate resistance' function, used to calibrate temperature transmitters with RTD inputs. Here is the statement from Beamex...

Are both Love and the RTU side of the bridge 4 wire, full duplex? If one side is 2 wire half duplex then a couple of jumper wires are needed. If jumpered, is it jumpered (+) to (+), (-) to (-)?