A clogging filter shows up as rising differential pressure long before the downstream flow falls off. Measuring that pressure is the easy part. The hard part is choosing the change-out number, then picking a transmitter whose range resolves a nearly clean filter yet still covers a plugged one. A filter trip can be handled by…
RTD vs thermistor compared for industrial use: accuracy, range, interchangeability, self-heating, and transmitter pairing, with a clear selection rule.
A standard differential pressure transmitter sits at the same temperature as its electronics, and that ceiling is low. On the capacitive HM3051 cell the amplifier is rated only to +93 °C. The silicone-filled measuring element reaches +104 °C. Suppose your process is superheated steam at 250 °C, hot circulating oil at 280 °C, or a column bottom above 300 °C….
Temperature transmitter calibration for RTD and TC inputs: tools, two-point trim, 5-point check, the 4:1 TUR rule, and the lead-wire and cold-junction traps.
Pressure transducer troubleshooting by symptom: no output, stuck at 4 mA, pegged at 20 mA, drift and noise — plus loop checks and when to replace.
Step-by-step pressure transmitter calibration: the 5-point method, what each point should read in mA, pass/fail scoring, and why re-ranging isn’t calibration.
A working engineer’s guide to choosing a sanitary pressure transmitter: process connections, surface finish, the 3-A/EHEDG/ASME-BPE standards, and the CIP/SIP temperature limit that catches people out.
Calculate thermowell insertion length (U) in four steps: three minimum rules, two worked examples, and a quick-reference table by pipe size from DN15 to DN600.
Pressure transmitter output signals compared: 4-20mA vs 0-10V vs 1-5V vs RS485 – wiring, cable distance, fault detection, and how to choose.
Choosing an HVAC differential pressure transmitter: match range in Pa/inWC, pick a switch vs transmitter, and the right 4-20 mA output for your BAS.
Type T thermocouple specs: -200 to 350 °C, ±0.5 °C special tolerance, copper-constantan. Why it wins below 0 °C, color codes, and HMK WRCK selection.
The accuracy of a Pt100 resistance thermometer is graded by tolerance class under IEC 60751:2022. Class A holds ±0.15 °C (±0.27 °F) at 0 °C; Class B holds ±0.30 °C (±0.54 °F) at the same point. Both tolerances widen with temperature, and each class is valid only across a defined range. This guide states the…
How to choose a hydraulic pressure transducer that survives pressure spikes and cyclic fatigue: sensing tech, overpressure sizing, and field testing.
Pressure transmitter turndown ratio explained: how it’s calculated, why re-ranging hurts accuracy, the % of span vs % of URL trap, and how to size the range.
How to choose a wireless pressure transmitter: when wireless beats cable, the protocol decision (WirelessHART vs LoRa vs Bluetooth vs cellular), battery life, and SCADA integration.
Thermowell types explained: how to choose connection, stem, material, and insertion length, with the ASME PTC 19.3 wake-frequency check.
How to choose a hazardous location pressure transmitter: IEC Zones, NEC Class/Division, Ex d vs Ex i vs non-incendive, T-codes, and where the HM60 fits.
Pt100 vs Pt1000: same curve, same IEC 60751 accuracy class. What really decides it is lead-wire error, self-heating, and your existing instrument input.
How to pick a well water level sensor: submersible pressure vs ultrasonic, sizing the range, and installing it for dry-run pump protection.
How to choose between a pigtail siphon and a condensate pot for steam pressure transmitters, plus sizing, material selection, install practice, and HMK transmitter pairings.