Technical Guides
Engineering selection guides and comparison tables for water treatment, online analytical sensors, dosing and process pumps, UV disinfection and hygienic stainless steel systems.
Flow Sensors and Flow Switches: Calorimetric Selection
Calorimetric flow sensor and flow switch selection, velocity-to-flow conversion, Wenglor weFlux² and UniFlow.
Read guide →Bioreactor pH Sensors: Autoclave, SIP and Single-Use
EasyFerm Plus, EasyFerm Bio and single-use OneFerm selection for autoclave, SIP, CIP and digital Arc integration.
Read guide →CIP and SIP Explained: Cleaning and Sterilization in Place
Difference between CIP and SIP, cycle stages, RO membrane cleaning and CIP/SIP-compatible Hamilton sensors.
Read guide →Dosing Pump Maintenance: Diaphragm, Valves, Calibration
Iwaki EWN, EH-E, EWP, IX and LK: wear part service life, diaphragm and valve replacement, degassing, torque and calibration.
Read guide →Handheld Water Analyzers: Chlorine, pH, Conductivity
Pyxis handheld instrument selection for chlorine, pH, conductivity, turbidity, PTSA and reagent-based water tests.
Read guide →EDI System Selection: Feed Water, Recovery, Sanitization
RO + EDI feed water limits, FCE, recovery rate, concentrate stream, DC current and Ionpure CEDI module selection.
Read guide →Pool Chlorine Measurement: Online Free Chlorine and pH
Online free chlorine and pH measurement in pool water; cyanuric acid stabilizer, sample line and closed-loop dosing control.
Read guide →Hydrogen Peroxide (H2O2) Measurement: Online Sensors
Walchem amperometric and Pyxis ST-766SS H2O2 sensors; measuring range, cross-sensitivity, controller and dosing pump pairing.
Read guide →Hygienic Design: Dead Legs, Slope and Surface Finish
Dead-leg (L/d) rule, line slope and drainability, Ra surface roughness classes, valve and fitting selection.
Read guide →Drinking Water Turbidity Measurement: Online Monitoring
Filter effluent and distribution monitoring down to 0.001 NTU with DW-739, DW-2100P and IK-73X PLUS, sample line and calibration.
Read guide →Cartridge Filter Selection: Rating, Media, Housings
Micron rating, PP/PES/PTFE/metal filter media, bag filters, filter housings and end-cap configurations.
Read guide →Boiler Feedwater Dissolved Oxygen Measurement (ppb)
Trace (ppb) dissolved oxygen in boiler feedwater: sensor selection, deaerator sample conditioning, temperature limits and troubleshooting.
Read guide →Boiler Water Conductivity and Blowdown Control
Surface blowdown control, cell constant 1.0 and 10.0 sensors, temperature compensation factor, feedwater and condensate lines.
Read guide →Chlorophyll-a Sensors: Fluorescence Algae Monitoring
Fluorescence measurement for algae and cyanobacteria monitoring with TriOS microFlu V2, Pyxis EM-500 and EM-400.
Read guide →Pressure Gauge Selection: Size, Range, Filling, Diaphragm
Dial size, pressure range, accuracy class, glycerin-filled, stainless steel and diaphragm seal gauges; Aterma series and unit conversion.
Read guide →Magnetic Drive Pumps: Sealless Chemical Transfer
Iwaki MD, MX, MDM, MXM, SMX, MDE, MDW and metallic MP, MTFO series; flow rate, temperature, dry-run protection and ISO 2858 replacement.
Read guide →Nitrate Sensors: Reagent-Free UV Measurement
Reagent-free UV nitrate (NO3-N) measurement; optical path length, range and comparison of TriOS NICO, NICO plus, OPUS and OPUS aero.
Read guide →Online Turbidimeter Selection: Inline vs Panel Analyzers
Inline turbidity sensor vs panel analyzer; EPA 180.1 and ISO 7027 principles, NTU range, cleaning and calibration.
Read guide →Optical Dissolved Oxygen Sensors: Luminescence Method
Luminescence quenching principle, optical cap types, and comparison of Hamilton VisiFerm, VisiTrace, VisiWater and Pyxis ST-772.
Read guide →Passivation Verification Tests and Acceptance Criteria
Ferroxyl, water break, copper sulfate, XPS/ESCA and Cr/Fe ratio tests; acceptance criteria and passivation documentation.
Read guide →pH Electrode Selection: Glass, Reference, Connectors
Membrane glass, reference system, diaphragm, temperature-pressure limits, CIP/SIP, VP6/S8/Arc connectors and 120–425 mm shaft lengths.
Read guide →Polymer Dosing Pumps: Viscous Fluids and Flocculants
Iwaki EWN-R V-type, IX, G gear and Hicera V pumps for viscous fluids and polymer flocculants; viscosity limits and sizing margin.
Read guide →PW and WFI Loop Sanitization: Hot Water, Ozone, Chemical
Comparison of hot water, ozone and chemical sanitization; temperature, ppb concentration, residual destruction and validation.
Read guide →Rouging and Derouging: ASME BPE Rouge Classes
ASME BPE Class I, II and III rouge deposits, derouging methods, when derouging is required and its relationship to passivation.
Read guide →Pure Water Conductivity Measurement (USP 645)
PW, WFI and ultrapure water: inline measurement, UPW sensors, USP 645 three-stage verification and low-conductivity standards.
Read guide →Silica Measurement in Boiler Feedwater, DM and EDI
Silica monitoring in boiler feedwater, demineralizer and EDI outlet: why it matters, Testomat 808 SiO2 limit monitoring and SP-800 methods.
Read guide →Cooling Tower Automation: Bleed, Inhibitor, Biocide
Bleed, scale inhibitor and biocide control with Walchem controllers; controller selection, installation and alarm table.
Read guide →Spectral Water Quality Sensors: UV-VIS and Fluorescence
UV-VIS photometers, spectrometers and fluorometers: sensor selection for nitrate, SAC254, COD equivalent, oil-in-water and chlorophyll.
Read guide →Oil-in-Water Measurement: UV Fluorescence Sensors
Online PAH and oil-in-water monitoring by UV fluorescence; comparison of TriOS enviroFlu, microFlu V2 HC and Pyxis HM-500.
Read guide →Toroidal (Electrodeless) Conductivity Sensors
Electrodeless conductivity measurement in coating, fouling and aggressive solutions: range, body material and controller selection.
Read guide →UV Lamp Replacement and Quartz Sleeve Cleaning
Series-specific UV lamp service life, maintenance schedule, quartz sleeve cleaning and low UV intensity alarms.
Read guide →UV System Selection: Flow, UVT, Dose, Pre-treatment
Flow rate, UV transmittance (UVT), target UV dose and pre-treatment requirements for selecting an industrial UV reactor.
Read guide →Send the make and model of your current instrument to [email protected] — our engineers will propose the equivalent with the same connection and measuring range.
Planning a project? Send us your flow rate, feed water source and target water quality to [email protected] — our engineers will reply with a technical proposal.