HM Digital

HM Digital is a leading supplier of water testing equipment around the world. We have included five test meters in our range. These hand held meters fit the needs for most requirements for hydroponics, aquaponics and aquarium applications.

HM Digital

PH-80

HM Digital
891144000175
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HM Digital PH-80
  • Measures pH & Temperature
  • One touch, automatic digital calibration
  • Water resistant
  • Simultaneous Temperature display
  • Sleek lightweight design
  • Large easy to read display
  • 0 - 14 measurement range
  • automatic temperature compensation

SPECIFICATIONS

pH Range: 0 - 14  
Temperature Range: 1-80°C
Resolution: 0.1 pH; Temperature resolution is 0.1°C/F 
Accuracy:  +/- 0.2 pH; Temperature accuracy is +/-2%
Calibration:  Digital automatic calibration (one point) 
Electrode:  Glass sensor and reference tube electrodes 
Housing:  Water resistant 
Power source:  3 x 1.5V button cell batteries included (LR44) 
Dimensions:  15.3 x 3.2 x 1.8 cm
Weight:  53.9g
Warranty and Service Info

NOTE: Each PH-80 is shipped with the sponge in the cap dry.  Prior to use, pour a small amount of storage solution from the mylar packet into the sponge so that the sponge is moist. (not dripping wet) Put the cap back on and allow to soak for 15 minutes (standing upright) prior to use.  Additional electrode storage solution is available for purchase.

COM-80

HM Digital
891144000229
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HM Digital COM-80
  • Measures EC, TDS and temperature
  • digital calibration
  • data hold and battery indicator
  • large easy to read screen
  • splash proof / water resistant



SPECIFICATIONS

EC Range: 0 - 9990 uS  
TDS Range: 0 - 8560 ppm (mg/L) 
Temperature Range: 0 - 80°C
Resolution: EC: 0.1uS   TDS: 01ppm   Temperature: 0.1°C 
Accuracy:  +/- 2 %
Calibration:  Digital by push button
Probe:  Detachable, with platinum electrodes 
Housing:  Waterproof (submersible)
Power source:  3 x 1.5V button cell batteries included (LR44) 
Dimensions:  18.5 x 3.4 x 3.4 cm
Weight:  90.7g

Warranty and Service Info
 EC vs TDS. What is best?

EC-3

HM Digital
891259010588
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HM Digital EC-3
  • Measures EC
  • easy to read display
  • includes carry case with belt clip
  • highly efficient and accurate
  • hold function with auto off
  • built in digital thermometer


SPECIFICATIONS

EC Range: 0 - 9990 uS  
Temperature Range: 0 - 80°C
Accuracy:  +/- 2 %
Calibration:  Factory Calibrated
Power source:  2 x 1.5V button cell batteries included (LR44) 
Dimensions:  15.5 x 3.1 x 2.3 cm
Weight:  76.5g

 

  EC-3 Instructions

     Warranty and Service Info
 EC vs TDS. What is best?

EC-3M

HM Digital
603964473448
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HM Digital EC-3M
  • Measures EC
  • easy to read display
  • includes carry case with belt clip
  • highly efficient and accurate
  • hold function with auto off
  • built in digital thermometer



SPECIFICATIONS

EC Range: 0 - 9.99 mS  
Temperature Range: 0 - 80°C
Accuracy:  +/- 2 %
Calibration:  Factory Calibrated
Power source:  2 x 1.5V button cell batteries included (LR44) 
Dimensions:  15.5 x 3.1 x 2.3 cm
Weight:  76.5g
     Warranty and Service Info (pdf)
EC or TDS. What is best?

TDS-3

HM Digital
10891144000080
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HM Digital TDS-3
  • Measures ppm (or TDS)
  • easy to read display
  • includes carry case with belt clip
  • highly efficient and accurate
  • hold function with auto off
  • built in digital thermometer


SPECIFICATIONS

TDS Range: 0 - 9990ppm  
Temperature Range: 0 - 80°C
Accuracy:  +/- 2 %
Calibration:  Factory Calibrated
Power source:  2 x 1.5V button cell batteries included (LR44) 
Dimensions:  15.5 x 3.1 x 2.3 cm
Weight:  76.5g

     TDS-3 Instructions (pdf) 
     Warranty and Service Info (pdf)
 EC or TDS. What is best?

Batteries (LR44) - Card of 10

Maxwell
6922910320327
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Meter Batteries
  • 1.5 volt
  • Alkaline Button Cell 
  • 10 batteries per card

Suits all HM Digital pens above