Panel-mounted pH Digital Controller - pH500
- CAL Check™ alerts users of calibration status.
- Fail Safe Alarm System protects these meters against the pitfalls of process control.
- Push button password programming prevents tampering.
Fail Safe Alarm System
Hanna’s exclusive Fail Safe Alarm System protects against problems caused by power supply failure or signal interruption, which are typical risks in industrial environments. An alarm condition is indicated by a red LED, located directly on the front panel of the controller
Differential Input
In a system with poor grounding, it is possible to have a ground current flowing through the reference junction. This can cause a rapid degradation of the electrode. The Hanna differential input reduces the likelihood of ground loops.
Proportional Control
Slows the pump down when the measured pH level approaches the set value, which ensures precise dosage and avoids costly waste of chemicals due to overdosage.
Analog Output
To enhance troubleshooting and the ability to record data while monitoring, simply attach a recording device to the instrument’s 4 to 20 mA output contacts, conveniently located on the front panel, to obtain a hard copy of the results on demand.
PC Connectivity
RS232C port allows for connection to a PC. Data transmission from the instrument to the PC is possible with the HI 92500 Windows® compatible application software offered by Hanna Instruments.
Automatic Temperature Compensation
A 2-wire Pt100 can be connected to provide automatic temperature compensation of measurements.
Specifications
|
pH Range |
0.0 to 14.0 |
|
pH Resolution |
0.1 % |
|
pH Accuracy |
±0.2 |
|
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 |
|
Alarm Relay |
1 contact output SPDT, 5A-250 VAC, 5A-30 VDC (resistive load), fuse protected (2A, 250V fast fuse) Analog Output Signal galvanically isolated: 0-1 mA, 0-20 mA and 4-20 mA,0-5 VDC, 1-5 VDC and 0-10 VDC |
|
Digital Output |
Signal RS232 bi-directional optoisolated |
|
Setpoint |
1 or 2 contact outputs SPDT 5A-250 VAC, 5A-30 VDC (resistive load), fuse protected (2A, 250V fast fuse) |
|
Overtime adjustable |
typically from 5 to approximately 30 minutes |
|
Input Impedance |
1012 Ohm |
|
Power Supply |
115 VAC ±10%; 50/60 Hz |
|
Dimensions |
144 x 144 x 170 mm Panel Cutout 140 x 140 mm |
|
Weight |
1.6 kg (3.5 lb.) |
|
Ordering information |
Each pH 500 model is supplied complete with mounting brackets and instructions. |