pH500221-2 pH Controller - 2 setpoints / Proportional Control with analog output

Product information "pH500221-2 pH Controller - 2 setpoints / Proportional Control with analog output"

Single or dual set point

Fully programmable
mA and VDC recorder output or RS232
Differential input for ground loop protection
Automatic three point calibration
Last calibration data
Automatic Temperature Compensation
Simple wiring with removable terminal modules



pH 500 series of controllers are simple to operate, microprocessor-based process meters packed with features. For more flexibility and better resolution for chart recorders, any two points between 0 and 14 pH can be chosen to correspond to the analog output spans. Several pH 500 models are equipped with a bi-directional RS232 port. Push button password programming prevents tampering.

The Fail Safe Alarm System protects the pH 500 against the pitfalls of process control, like power interruption or line failure. With pH 500 quick one, two or three point calibration at pH 4.01, 7.01 and 10.01 comes standard. The temperature can be manually or automatically compensated for. Models with RS232 output allow computer compatibility, a necessity for process control instrumentation. You can also choose from ON/OFF or proportional dosage to save on chemicals.


Specification :
Range pH 0.00 to 14.00 pH
Temperature -9.9 to 120°C
Resolution pH 0.01 pH
Temperature 0.1°C
Accuracy @ 20°C pH ±0.02 pH
Temperature ±0.5°C
Input Impedance 1012 Ohm
pH Calibration automatic, one, two or three point, at pH 4.01, 7.01, 10.01
Temperature
Compensation automatic (with Pt100 probe) or manual from -9.9 to 120°C
Outputs digital: RS232 bi-directional optoisolated; or analog, galvanically isolated: 0-1 mA, 0-20 mA and 4-20 mA, 0-5 VDC, 1-5 VDC and 0-10 VDC
Set Point Relay 1 or 2 contact outputs SPDT 5A-250 VAC, 5A-30 VDC (resistive load), fuse protected (2A, 250V fast fuse)
Alarm Relay 1 contact output SPDT, 5A-250 VAC, 5A-30 VDC (resistive load), fuse protected (2A, 250V fast fuse)
Power Supply 115 VAC ±10% or 230 VAC ±10%; 50/60 Hz
Power Consumption 15 VA
Over Current
Protection 400 mA 250V fast fuse
Max Oscillation
Frequency 4 MHz
Environment 0 to 50°C (32 to 122°F); RH max 95% non-condensing
Dimensions panel cutout: 140 x 140 mm, instrument: 144 x 144 x 170 mm
Weight 1.6 kg (3.5 lb.)