- Waterproof
- Adjustable TDS ratio
- Adjustable β
- Extra-large dual-level backlit LCD
- 12 VDC power supply
The HI 981504 has been designed for continuous and simultaneous monitoring of pH, TDS, and temperature.
Simply install the HI 981504 above the sample to be tested, plug the instrument to the mains and immerse the probes. pH, TDS, and temperature measurements will be simultaneously displayed on three backlit LCDs.
Users can easily select the temperature unit through a switch on the back panel.
The HI 1286 gel-filled pH electrode is provided with a waterproof sheath to protect the BNC connector. The unique design of the electrode provides longer life in aggressive solutions. The HI 7634 TDS probe is easy to clean and requires little maintenance. Measurements are accurate and the meter can be calibrated at one or two points for pH and at a single point for TDS.
Supplied with HI 1286 pH probe, HI 7634 TDS probe, temperature probe, TDS sachet, (2) cleaning solution sachets, screwdriver, 12 VDC adapter, and instructions.
| Specifications |
HI 981504/7 with 0.7 TDS factor |
| Range |
pH: 0.0 to 14.0; TDS: 0 to 1990 ppm; Temperature -10.0 to 60.0 °C (-14.0 to 140.0 °F) |
| Resolution |
pH: 0.1; TDS: 10 ppm; Temperature: 0.1°C ( 0.1°F) |
| Accuracy (@20°C/68°F) |
pH: ± 0.2%; TDS: ±2% F.S.; Temperature: ± 0.3°C ( 0.5 °F) |
| pH Calibration |
Manual 2 points through trimmers |
| TDS Calibration |
Manual 1 point through trimmer |
| Probes |
pH: HI 1286 (included); TDS: HI 7634 (fixed); Temperature: Stainless Steel, 2m cable (fixed) |
| Temp. Compensation |
Automatic, 5 to 50 °C (41 to 122 °F), for TDS readings only |
| Power Supply |
12 VDC adapter (included) |
| Environment |
0 to 50 °C (32 to 122 °F); max 95% RH |
| Dimensions |
6.3 x 4.4 x 1.4" (160 x 110 x 35 mm) |
| Weight |
1.2lbs (560g) |
(877) 640-GROW
