PHR-7W pH Controller
The PHR-7W pH controller is used to adjust or monitor a liquid solution for a prescribed pH range.
The unit is equipped with all the inputs and outputs necessary to independently control a neutralization system.
The program controller for the neutralization process is supported by the software and is selectable. The control function can be switched between three-point and pulse frequency operation.
For recording purposes, the unit is equipped with a freely configurable current output and optionally with an RS-232 printer interface.
Multiple configuration and setting options enable the user to precisely adapt the unit to the given application.
|Power supply||230 VAC +5%/-10%, 50Hz|
|Fuse protection||4 A mT|
|Power consumption||approx. 15 VA|
|Inputs||5 x neutral NO switch to GND
Contact potential difference approx. 10 VDC, I approx. 9 mA
Contact resistance, max. 1.5
|Electrode input||Differential amplifier, Re > 5 x 1011 (per DIN 19265) asymmetrically fed to the input terminals for commercial single-rod measuring chains.|
|Temperature sensor||PT100 in three-conductor configuration, temperature compensation in range from 0...100°C, temperature measurement from -50°C ... 150°C. Resolution: 0.5K (rounded internally).|
|Relay outputs||2 x phase-positioned (neutral possible)
6 x neutral, max. 230 V AC, 2 A
|Data output (optional)||For standard RS-232 printer interface: 8-bit UART + start bit(0) + stop bit(1), 2400 Baud.|
|Current output||0(4) ... 20 mA max. load 400 Linearity: 0.5% FS Operating temperature -20 ... +55 °C|
|Housing||DIN plastic housing
for wall installation IP54
|Dimensions||W / H / D : 243 x 193 x 116 mm
|Download PDF||Data Sheet (german)|
|Accessories||pH single-rod measuring chain:
Coaxial cable for 5m KC0019 pH measuring cell
(other lengths available on request)
|Ordering information||PHR-7W E1745