Search results

The DP transmitter itself is a pretty rugged beast, and can take significant overpressures, which is unlikely in the service that it's used for. There must be something wrong in one of the capillary tubes to cause the 15% offset. Are the capillaries and seals all-welded construction or are...

Zero point adjustment instructions yokogawa EJA118E https://web-material3.yokogawa.com/IM01C22T01-01EN_008.pdf Note that the zero adjust needs to be enabled, (18) External Switch mode, page 2-17

>Then we adjust the same value (looking from other Transmitter) by using Yokogawa transmitter zero adjustment screw Which model DP transmitter are you working with the has a zero adjustment screw?

Then we open the diaphragm seal from impulse line. The remote diaphragm seal is usually a welded assembly to the capillary. You removed the capillary with its diaphragm from the transmitter body? Or you removed the remote diaphragm from its seal on the capillary? Did you pull a hard vacuum...

Some RS-485 references: RS-485 Basics Series, a Technical White Paper, Texas Instruments https://www.ti.com/lit/wp/slla545/slla545.pdf?ts=1723012808044 AN-1057 Ten Ways to Bulletproof RS-485 Interfaces,Texas Instruments https://www.ti.com/lit/an/snla049b/snla049b.pdf Troubleshoot RS-485...

I would re-phrase that to, "you need to zero trim at no flow to eliminate the differential offset at no flow". To my knowledge all industrial DP transmitters have a HART function to call the output zero (4.000mA) at whatever pressure 'remains' at zero flow. The offset can be due to a...

The zero of an absolute pressure transmitter might have drifted over time.

An RS-485 interface has never been 'standard' on a PC, it would be an added card. That card would have the wiring for the connector or terminal screws. Terminal screws tend to be more common for RS-485. DB-9 was the standard connector for RS-232 for the 'standard' serial port back when a...

Consider clamp-on ultrasonic because the materials of construction are not a factor since the meter transducers contact the outside of the pipe, not the medium itself. I think the Siemens clamp-on has transducers for a low 10LPH flow rate.

Siemens has to answer as to what the effect of higher lead wire resistance is on the input circuit because that depends on the input circuit and its biasing current and that kind of information isn't covered in the marketing spec sheet. The lead wire resistance would have to be known: the...

The FDU91 ultrasonic level sensor needs to connect to a device that - generates an excitation signal, - knows how to read the echo signal, - can interpret the temperature signal AND - can interpret the echo signal. The RMA42 does none of that. The manual for the SFDU91, page 4, says...

You might get a knowledgeable PKS customer to answer your question, but the full answer is typically a 20-40 page quotation from the Honeywell systems group (at least, that's the quote I saw for a one PKS version upgrade). If a PKS guy doesn't show up here, you'll need to contact Honeywell...

It's simple, it works, it's reliable and nearly everyone understands the operation.

Did you mean DVC6200? Every DD available seems to be at the link below (using the search on that page), but I have no idea which is 475 compatible. https://www.emerson.com/en-us/support/software-downloads-drivers-library

All the mechanical stuff is nice, but useless, because connecting electrical devices to a PLC requires information on the electrical specs.

This place sells tested, used equipment. They don't mention selling manuals, but who knows? They do mention having to use computer equipment from the 1980's for their testing. You might contact them to see if they have documentation for sale...

1. Analog output On page 170 The Sinamics G120 manual at this link file:///C:/Users/danw/Downloads/G120C_op_instr_0917_en-US.pdf it says that the analog output can be configured for either 0-20mA or 0-10Vdc or 4-20mA It is not clear which is the default setting because the states that "The...

Thanks for clarification. I thought Mbus was his shorthand for Modbus.

2. A few hours after software integration of the water meter loses its communication. There are 6 to 8 water meters Does only one water meter exhibit the intermittent communications failure? Does that failure affect any other devices on the same RS-485 bus?

1. The reading shown on the water meter and the reading shown in the software are not the same. 1. Flow is dynamic, so an instantaneous flow rate on the meter might have changed by the time a Modbus poll picks up the value and shows it. 3. Modbus, like other any other digital protocol I'm...