HANNA Instruments pH502 pH Digital Controllers Owner’s Manual
- August 22, 2024
- HANNA instruments
Table of Contents
HANNA Instruments pH502 pH Digital Controllers
pH Digital Controllers with Matching Pin and PID Control
-
CAL Check™
Alerts users of calibration status -
ATC
Automatic temperature compensation -
3 Point Calibration
Up to three point calibration
The pH502 series of controllers offer many features to increase the level of
control available in your plant. These instruments can be configured to
utilize P, PI, PID controlling. With this feature, the pH502 takes the place
of three instruments that only allow one configuration each. The pH502 line
includes models that incorporate control through analog output to drive any
compatible device, such as an electrovalve or pump. The solid state relay is
available to ensure maximum life of the switching device. Each model has a
differential input for a grounding bar to extend electrode life.
Fail Safe Alarm System protects against power interruption or line failure. 1,
2 or 3 point automatic calibration and manual or Automatic Temperature
Compensation complete the features of this controller.
Specifications
| Specifications | pH502 |
|---|---|
| Range | 0.00 to 14.00 pH; -9.9 to 120°C |
| Resolution | 0.01 pH; 0.1°C |
| Accuracy (@25°C/77°F) | ±0.02 pH; ±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: RS485 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) or 1 or 2
Solid State Relay (SSR), 1A, 250 VAC (resistive and inductive load), fuse
protected (2A, 250V fast fuse)
Alarm Relay| one contact output SPDT, 5A-250 VAC, 5A-30 VDC (resistive load),
fuse protected (5A, 250V 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
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.)
Ordering Information
| Each pH 502 model is supplied complete with mounting brackets and instructions
Choose your configuration
pH502421-1 Dual setpoint with SSR relay, on/off and PID controls, analog output, 115V
pH502421-2 Dual setpoint with SSR relay, on/off and PID controls, analog output, 230V
Line ID: @neonics
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