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Manual
Product Manuals
Operating and installation guides for popular HM Digital instruments.
Handhelds
TDS-EZ User Manual
Economy TDS tester operating guide, version 3.2.
TDS-3 User Manual
TDS meter with protective carrying case.
TDS-4 User Manual
Pocket-size TDS tester operating guide.
TDS-4TM User Manual
Aquarium TDS and temperature tester operating guide.
EC-3 User Manual
Conductivity meter with carrying case operating guide, version 2.0.
EC-3M User Manual
Millisiemens conductivity meter operating guide.
ORP-200 User Manual
Waterproof ORP and temperature meter operating guide.
AP-1 User Manual
AquaPro TDS and temperature tester operating guide, version 2.2.
AP-2 User Manual
AquaPro EC and temperature tester operating guide, version 2.2.
PH-80 User Manual
pH and temperature HydroTester operating guide, version 2.4.
COM-80 User Manual
EC, TDS and temperature HydroTester operating guide, version 2.1.
COM-100 User Manual
Waterproof professional EC, TDS and temperature meter operating guide, version 2.3.
COM-300 User Manual
Waterproof professional pH, EC, TDS and temperature meter operating guide, version 2.1.
COM-360 User Manual
Dual-sensor pH, EC, TDS and temperature meter operating guide, version 1.1.
PH-200 User Manual
Waterproof professional pH and temperature meter operating guide, version 3.2.
SAL-1700 User Manual
Seawater salinity and temperature meter operating guide, version 1.1.
Monitors
HM-100 User Manual
Continuous pH, EC, TDS and temperature monitor operating guide, version 2.3.
HM-200 User Manual
Portable pH, EC, TDS and temperature monitor operating guide, version 1.3.
HM-500 User Manual
Continuous pH, EC, TDS and temperature monitor operating guide, version 2.5.
DM-2 User Manual
Commercial in-line dual TDS monitor operating guide, version 1.5.
DM-2EC User Manual
Commercial in-line dual EC monitor operating guide, version 1.5.
DM-3 User Manual
Inline dual TDS monitor operating guide.
LDM-100R User Manual
Commercial EC/TDS rejection monitor operating guide.
LSM-100 User Manual
Commercial EC/TDS monitor operating guide.
SM-1 User Manual
In-line single TDS monitor operating guide, version 2.1.
SM-1EC User Manual
In-line single EC monitor operating guide, version 1.3.
TRM-1 User Manual
Triple in-line TDS monitor operating guide, version 2.4.
Refractometer
Controllers
PSC-50 User Manual
TDS and EC controller operating guide, version 2.0.
PSC-54 User Manual
Single-line TDS and EC controller with 4-20mA output operating guide, version 2.0.
PSC-60D User Manual
Dual-line TDS and EC monitor operating guide, version 2.0.
PSC-64D User Manual
Dual-line TDS and EC monitor with 4-20mA output operating guide, version 2.0.
PSC-150 / PSC-154 User Manual
Extended-range TDS and EC controller guide.
CIC-150 / CIC-152 User Manual
Single and dual control dosing/injection TDS and EC controller guide, version 2.6.
PS-203 User Manual
Dual-display TDS controller operating guide, version 1.1.
PPH-1000 User Manual
Single-line pH and temperature controller operating guide, version 2.0.
Datasheet
Product Data Sheets
Product specifications and application references for models without a current standalone manual.
Catalogue
Catalogues
Browse the current product range and earlier reference catalogues.
Certificate
Certificates
Official quality certificates.
Maintenance
Maintenance Guides
Practical instructions for keeping measurements accurate and dependable.