Aqua Metrix P/R65 Panduan Petunjuk Pengoperasian - Halaman 3
Jelajahi secara online atau unduh pdf Panduan Petunjuk Pengoperasian untuk Alat Ukur Aqua Metrix P/R65. Aqua Metrix P/R65 20 halaman. Differential 2-wire (4-20 ma) ph & orp probes
Halaman Cetak1. GENERAL INFORMATION
This manual covers all AquaMetrix P65, and R65 Series differential measurement pH and ORP
probes.
The PRR65 series probes feature the Aquametrix differential design for long lifetime, user
serviceability and more accurate readings. In typical installations these probes will last for years
whereas the more common combination probe lasts only months. The "P" prefix refers to the pH
probe while the "R" prefix refers to the ORP version.
The P/R65 probe is a 2-wire device. It incorporates an encapsulated transmitter that outputs a 4-20
mA analog signal. It was designed to connect directly to a PLC or the AquaMetrix 2300 multi-input
controller.
The output from a two-wire transmitter type is non-isolated and un-calibrated. The system must
provide 24 VDC, with the "low" input isolated from earth ground, and a means of calibrating for
offset and span.
NOTE: Do not discard the protective cap(s) that came with the sensor. If the sensor is removed
from the process for an extended period of time, thoroughly clean the sensor, put a piece of cotton
ball with few drops of water into the protective cap and replace it on the sensor. This keeps the
junction from drying out which causes slow response when put back into operation or causes
permanent damage to the sensor. Sensors should not be left in dry lines or empty tanks for
extended periods.
Do not store the sensors in a dry or humid location. When storing, check the protective cap(s)
regularly to make sure the cotton ball remains moist. Improper storage of sensors voids the
warranty.
Page 3
P/R65