PHG-21D Industrial pH/ORP MeterDetailed product description：

Characteristics of PHG-21D Industrial pH/ORP Meter:

The instrument display is a 3 1/2 digit LCD display Simultaneously display the pH value and temperature value (℃), ORP value, and temperature value (℃) of the tested water sample;
It has a (4-20) mA DC isolated output signal, and its output upper and lower limits can be set arbitrarily;
Equipped with upper and lower limit alarm functions, with a contact capacity of 2A and 220V AC (no inductance);
Equipped with power-off data protection function, even if there is an abnormal power outage, the data stored inside the instrument is still valid. After restarting, calibration is not required to enter the measurement process;
It has the function of automatically identifying three standard solutions: 4.00, 6.86, and 9.18;
Equipped with automatic slope calculation, automatic temperature compensation, and automatic calibration functions;
The protection level of the electronic unit chassis shell is IP65, which can prevent water spray and dust intrusion;

There are two ways to combine instruments:
a) PHG-21D (suitable for situations where the distance between the measuring point and the instrument is far, up to 20 meters)
b) PHG-21D-1 (with preamplifier inside the instrument) can be directly connected to the transmitter
(Suitable for measuring points within a distance of 5 meters from the instrument)
Supporting transmitters: PHGF-27, 27B, 28, 28B (all 2001 versions)
PHGF-43、PHGF-46
Note: If there are special requirements (such as high temperature greater than 60 ℃, special medium), the transmitter can be customized and suitable electrodes can be selected

Technical specifications of PHG-21D industrial pH/ORP meter:

1. Measurement range:
pH:(0.00～14.00)pH；
Resolution: 0.01pH
ORP:(-1800～1800)mV
Resolution: 1mV
Temperature: (-10.0~120.0) ℃
Resolution: 0.1 ℃
2. Basic instrument error pH: ± 0.05pH ORP: ± 10mV
Temperature: ± 0.5 ℃ (0.0 ℃≤ T ≤ 60.0 ℃) ± 1.0 ℃ (in other ranges)

3. Instrument repeatability pH: 0.02pH ORP: 10mV ± 1 word
4. Stability of electronic unit: ± 0.02pH/24h
5. Temperature of the tested water sample: (0-60) ℃
6. Power consumption: 10W
7. External dimensions of electronic unit, mm: 144 × 144 × 150
8. Electronic unit opening size, mm: 138 × 138
9. Weight of electronic unit: 2kg