Please Note: This item cannot work with a digital ballast, please select Milwaukee MC120 or MC110.
HANNA Instruments HI 991401 pH Temp Continuous Monitor, GroChek, HI991401 HI 991401-01 HI 991401-02 HI991401-01 HI991401-02
This indicator from HANNA instruments has a large, dual-level backlit LCD to give you instantaneous readings of both pH and temperature, even from a distance. The HI 991401 microprocessor provides for automatic calibration, automatic buffer selection and automatic temperature compensation.
HI 991401's waterproof housing has been designed to meet the grower's need, and is well suited to withstand the aggressive environments found in agricultural and hydroponics applications. Measurements are highly accurate and can be verified with one or two point calibrations. With a 12 Vdc power supply included with the meter, low battery failurets are never an issue.
The interchangeable pH electrode and has been specially designed to address the needs of growers. Its design guarantees greater clogging resistance in fertilizer solutions with high concentrations of phosphate, nitrate, etc. This is a major improvement ensuring longer life for your electrode!
Range pH 0.0 to 14.0 pH
Range Temperature 0.0 to 60.0ï¿½C (32 to 140ï¿½F)
Resolution pH 0.1 pH
Resolution Temperature 0.1ï¿½C (0.1ï¿½F)
Accuracy pH ï¿½0.1 pH
Accuracy Temperature ï¿½0.5ï¿½C (ï¿½1ï¿½F)
Probe HI 1293D pH electrode (included) and HI 1294
temperature probe (fixed)
pH Calibration automatic, 1 or 2 points with 2 sets
of memorized buffers
(pH 4.01 / 7.01 / 10.01 or pH 4.01 / 6.86 / 9.18)
Temperature Compensation automatic
Input Impedance 1012 Ohm
Power Supply 12 Vdc power adapter (included)
Environment 0 to 50ï¿½C (32 to 122ï¿½F); RH max 95%
Dimensions 160 x 105 x 31 mm (6.3 x 4.1 x 1.2)
Weight 3 lbs