HM Digital - Replacement Sensors

Brand: HM Digital

HM Digital Replacement Sensors

HM Digital replacement sensors let operators replace a worn pH bulb or a damaged conductivity sensor on Pro Series pens and HM monitors without replacing the meter. Each sensor is the factory replacement part for its meter, so the instrument keeps its original measuring functions.

Pen-style sensors for the COM-100, COM-300 and PH-200 unscrew at the gasket ring and plug straight into the meter body, while the monitor probes connect by cable to the HM-100, HM-200 and HM-500. Operators in indoor cultivation and controlled-environment agriculture facilities can keep spares on hand to limit downtime; calibrate the meter after installing a new sensor, and keep pH sensors moist in storage solution.

Available Options

• pH Sensor - HM-500 / HM-200 - model SP-P5 (HM Digital also lists it for the HM-100)
• EC/TDS Sensor - HM-100 / HM-200 - model SP-C2, measures EC, TDS and temperature on a 2 m (78.7 in) cable
• EC/TDS Sensor - COM-100 - model SP-C1, EC/TDS/temp sensor
• Sensor - COM-300 - model SP-C3, combined pH/EC/TDS/temp sensor
• pH/Temp Sensor - PH-200 - model SP-P2, pH and temperature sensor

Key Features

• Genuine HM Digital replacement parts matched to each meter model
• SP-P5: pH probe for HydroMaster monitors; six-month warranty
• SP-C2: conductivity, TDS and temperature probe with heat-resistant ABS body and 2 m cable
• SP-C1: ABS-bodied EC/TDS sensor with built-in thermometer for the COM-100
• SP-C3: glass pH sensor with reference tube plus EC/TDS pins and thermometer; includes cap with sponge for storage solution
• SP-P2: pH and temperature sensor for the PH-200
• Pen sensors swap by unscrewing the gasket ring - no need to replace the meter

Ideal Applications

• Replacing an aged or damaged pH sensor in a pen meter or monitor
• Restoring EC/TDS accuracy after sensor pin damage or contamination
• Keeping spare sensors on hand for critical reservoir monitoring
• Maintaining fleets of HM Digital meters across multiple rooms