פרוב משולב למדידת pH/EC/TDS דגם HI1288

פרוב משולב למדידת pH/EC/TDS,

לעבודה עם המדים הניידים המשולבים HI991300 & HI991301

תוצרת Hanna Unstruments

לרכישת המוצר לחץ כאן

תיאור

The HI1288 is a 3-in-1 pre-amplified multiparameter probe that measures pH, EC/TDS, and temperature within a single polypropylene body. The pH portion of this probe is constructed with a cloth junction, maintenance free polymer gel electrolyte, and a low temperature glass sensing bulb. The EC/TDS portion of this probe utilizes two graphite sensors for an amperometric determination of conductivity and total dissolved solids. A built-in temperature sensor ensures that both pH and EC/TDS readings are compensated for temperature variations in both standards and samples. The design consideration for the HI1288 is ideal for measuring the pH, EC/TDS, and temperature in greenhouses, hydroponics, environmental monitoring, water treatment, wastewater treatemnt and boilers and cooling towers. The HI1288 is designed for use with Hanna’s HI991300 and HI991301 portable multiparameter meters.
  • Pre-amplified pH electrode
  • Amperometric EC/TDS sensor
  • Built-in temperature sensor

Details

Hanna Instruments offers a wide variety of electrodes that are designed for many different applications. The sensing material, body material, and connection type used are just some of the design considerations.

Pre-Amplified pH Electrode

The pH electrode circuit has a built-in amplifier that serves to reduce the effects of electrical noise on the high impedance pH measurement. Electrical noise can come from motors and pumps that are common in greenhouses. The single reference junction design of the pH electrode has a cloth junction that allows ion movement between the inner gel electrolyte and the sample being measured. The advantage of the cloth junction is that it can be extracted from the probe, exposing a fresh surface when readings become drifty or erratic. These features make this probe ideal for use in fertilizer solutions.

Amperometric EC/TDS Sensor

EC/TDS readings are performed by a two-pin amperometric sensor. An alternating voltage is applied to the sensor and the amount of current that passes between the two stainless steel pins determines the amount of dissolved ionic solids present.

Built-In Temperature Sensor

pH and EC/TDS readings must be temperature compensated in order to obtain accurate results. The built-in temperature sensor of the HI1288 provides a speedy temperature reading which is then used to adjust the pH and EC/TDS results accordingly.

Polypropylene Body

The polypropylene body of the HI1288 houses all three sensors within a sturdy, single body design. This body material is suitable for a wide range of applications and excels in measurements with portable meters due to its durability. The fins around the spherical glass pH bulb minimizes breakage due to accidental bumping or dropping of the electrode. The polypropylene plastic is a high quality plastic that is chemically resistant to many aggressive chemicals.

DIN Connector

The HI1288 uses a DIN connector. This type of connector is generally proprietary to the meters they are supplied with and may not be interchangeable. The HI1288 is made for use with Hanna’s HI991300 and HI991301 portable multiparameter meters.

Specifications

Body Material polypropylene
Reference single, Ag/AgCl
Junction / Flow Rate cloth
Electrolyte gel
Range pH: 0 to 13, EC
Max Pressure 0.1 bar
Tip Shape spheric (8 mm)
Recommended Operating Temperature 0 to 50°C (32 to 122°F) – LT
Temperature Sensor yes
Matching Pin no
Amplifier yes
Digital no
Cable 7-pole; 1 m (3.3')
Connection DIN
Applications agriculture, boilers, cooling towers, environmental monitoring, greenhouses, hydroponics, water treatment