pH CONTROLLER CP-801
CP-801 pH controller is designed to make measurements in pure water, ultra pure
water and sewage. It is one of the devices of new generation controllers representing
wide range of use. Designed to work in power stations, heat and power plants and
water treatment stations.
It is a stationary device in housing resistant to humidity (IP-65).
High measurement accuracy and stability have been ensured. The device has a large,
graphic display, showing the pH and temperature readout and the status of each relay
simultaneously. It is possible to choose among the displayed information. Apart from
the basic data – pH and temperature – one of the following additional parameters may
be chosen to be displayed: information about the relays’ status or information about the
last calibration date.
The device is easy to operate, has an English menu. It is equipped with a collective
optical signalisation of correct working and the progress of regulation process.
Thanks to the modern electronic components the controller’s memory has become fully
independent from the power supply.
CP-801 controller has an automatic compensation system, which cooperates with Pt-1000 temperature probe.
The device enables 1, 2 and 3-point calibration of the pH electrode with automatic
detection of the buffer solution value, possibility of setting the values, by the user, in a
given range. It is possible to calibrate the meter without the need of disconnecting the
outputs.
The controller is powered with standard 230 V voltage, which is galvanically isolated
from the input clamps. It is possible to use different power supply voltage: 110/230/24 V
AC, 12 – 24 V DC.
Outputs:
• relays (alarm or PID regulation);
• isolated digital: RS-485, MODBUS (ASCII and RTU);
• isolated current outputs: 0 ÷ 20 or 4 ÷ 20 mA.
In case of using the relays and exceeding the entered lower or upper limits, the proper
relay is switched (the minimum and maximum alarm), otherwise the duty cycle
coefficient or frequency is changed (for the PID regulator).
The meter is equipped with the real time clock with date.
It is possible to connect to the remote panel (keyboard with display), which enables to
control the device from up to 1 km distance.
Possibility of the data radio transmission from the measuring head to the controller.
24 months of warranty, quick warranty and after warranty service.
The pH electrode, which cooperates with the device, is placed in the head. In case of
pH measurements in containers we recommend GPZ-1 immersible head with EPX-1t
electrode for sewage or GXZ-1t head with suitable pH electrode chosen depending on
the type of the measured liquid. The signal is amplified by preamplifier placed in the
head.
The pH measurement in pipeline is made with use of the following flow-through heads: GPP-1 with EPX-1t electrode or GXP-1t
flow-through head with aproppriate electrode chosen depending on the measurement conditions.
In case of steel pipeline we offerspecial equipment for the pH electrode which is mounted on the thread placed on the
pipe and made according to our drawings.
If the pressure in the pipeline is higher than 6 bars, we recommend GXP-1 head, which
is side-built and provides lateral circulation and natural outflow of excess of liquid.
In case of using flow-through heads the preamplifier is mounted next to the head.
There is a possibility of wireless data transmission from the head to the controller.
TECHNICAL DATA |
Measured value
|
pH, temperature
|
pH range
|
0 ÷ 14 pH
|
Resolution
|
0.01 pH ±1 digit
|
Accuracy (±1 digit)
|
±0.02 pH*
|
Imput impedance:
|
>1012Ω
|
Temperature measuring range:
|
-50 ÷ 200 °C**
|
Temperature compensation:
|
automatic
|
Temperature compensation range:
|
-5 ÷ 130 °C
|
Temperature accuracy:
|
±0.2 °C*
|
Sensor calibration:
|
1, 2 or 3 points
setting the values in a given range
|
The relays’ parameters:
|
2A/250VAC/30VDC, PID controlling
|
Measurement input:
|
isolated
|
pH datalogger output
|
isolated, 0 ÷ 20 mA or 4 ÷ 20 mA
|
Temperature datalogger output:
|
isolated 0 ÷ 20 mA or 4 ÷ 20 mA
|
RS485 output:
|
isolated
|
Maximal RS485 connection length:
|
1000 m
|
Maximal cable length between preamplifier and controller:
|
200 m
|
Maximal distance between sensor and preamplifier:
|
10 m
|
Power:
|
240 V 50Hz, for a special order 170VAC÷250VAC, 24VDC/24 VAC
|
Isolation class:
|
PN-83/T-06500
|
Radioelectric interference:
|
N level
|
Dimensions (L x W x H):
|
215 x 215 x 95 mm
|
Weight of controller / preamplifier:
|
1350 g / 120g
|
Ambient temperature:
|
-20 ÷ 40 °C
|
Atmospheric humidity / pressure:
|
max. 80% / 80 ÷ 110 kPa
|
Atmospheric aggressivity level:
|
N/2/AG-U/C
|
* |
The accuracy of the meter only. |
** |
The temperature measurement range is limited to the temperature operating range of pH electrode. |