Magnetic flow meter on a caustic scrubber re-circulation flow slowly stops reading as the unit runs. Scrubber is on a hydrotreater at a small refinery.
By Walt Boyes Netcom on 6 December, 2016 - 10:10 am
Ultrasonic cleaning has kind of fallen out of favor. ABB used to make versions, as did some others....
One RS485 device does not work when it is in the RS485 network with the other six devices, but it works when it is the only device on the network.
Error from Type K Extension vs Thermocouple Wire
What would the magnitude of the error be from using just extension wire, not thermocouple wire?
By xtronics on 29 November, 2016 - 12:04 pm
What is important to understand is the voltage potential of the sensor is not from the junction -...
By JOAMON on 18 November, 2016 - 11:12 am
from my understanding extension wire is made of the same alloys as the t/c wire, just to a lesser...
By Joseph Ugalde on 18 November, 2016 - 9:06 am
I happen to work at a a thermocouple couple vendor and noticed your inquiry on here. The issue...
Compactlogix PLC with HART
Connecting a Compactlogic PLC with a 1769sc-IF4IH HART module
Gas Flowrate and Volume Measurement
Disparity in volume of gas captured by barton chart recorder from a gas vending company and ABB totalizer used the gas fired power station.
Problems with Level Measurement Using Displacer Sensor
Problem faced in level measurement using displacer sensor 249B with DLC3010, Process pressure 700 psi and Process temperature 80 Degree F to 100 Degree F.
Testing a Perkins 838/14 over speed sensor
Looking for information on Siemens SGT-600 bearing RTDs
Stator RTD Showing High Value During Running
Posted by Anurag Bhardwaj on 22 October, 2016 - 12:06 am
Ohm Stator RTD values for motor vary.
MODBUS - RTU Implementation Using AVR ATMEGA32A Controllers and RS485
Simple MODBUS - RTU implementation using AVR ATMEGA32A controllers and RS485 as the electrical layer.
Retro-fitable Noninvasive Flow Meter for Measuring Pressurised Water
Want to put some inexpensive non-invasive sensors to measure pressurized water flow rate in 1/2" pipes.
Gas Turbine Inlet Pressure Loss and Exhaust Pressure Loss
Why is total pressure loss used for Inlet Pressure Loss and static pressure loss used for Exhaust Pressure Loss?
Hastelloy "C" material in 33% HCL
Seal diaphragm material HASTELLOY"C" IN 33% HCL service
By Dale Feucht on 28 October, 2016 - 1:16 am
You are correct tantalum although expensive does not cost much for a thin diaphragm. A 33% solution...
Alternative method of measuring density (Mathematically)
PWM 4 to 20 mA Signal To Go To PLC
Connecting a sensor outputting 4-20mA PWM signal to an existing PLC that can only accept analogue 0-10V or 4-20mA signals and/or digital inputs
By Ikhtiander on 22 October, 2016 - 11:53 am
It was not clear on what you meant on PWM 4-20 mA , I guess there are 2 possibilities : 1. You...
Intermittent Temperature Transmitter Signal
Intermittently, the O/P signal from temperature transmitter going to LRV for very short time of nearly 90 m Second and return normal by itself.
Electronic Pressure Sensors
Different electronic sensors used recently for pressure transmitters. Any comparison for the advantage and most important the disadvantages (limitations) for each type?
Measuring differential level of sea water on transmitter band screen
Has any site using micro switch for the compressor air bleed valve? Is yes please share the details.
Ex ia Low Voltage Power Supply
Looking for an [Ex ia] DC power supply with entity parameters; 4V < Uo > 8.4V; Io <= 200mA; Po <= 1.3W
Requirements for Sil 3 System
Questions about SIL 3 system requirements