PDF《Conductivity meter》

8222 ELEMENT p.

1/7 www.burkert.com Type

8620 Cooling Tower or boiler chemistry controller Technical data (Pipe + conductivity meter) Pipe diameter DN25 to DN110 (DN

32 and PN*DN ??1000 Fluid group 1, §1.3.b DN ??25, or DN >

25 and PN*DN ??2000 Fluid group 2, §1.3.b DN ??125

8222 ELEMENT p. 3/7 Pressure/Temperature chart Application range of a

8222 ELEMENT conductivity meter: A : with PVDF nut B : with PVC nut The measures have been made at an ambient temperature of 60°C. Pressure (bar) 06$& 06# 06$& ! " 4??# Application range of a

8222 ELEMENT conductivity meter with PVC nut with S022 adaptor P (bar) ? -ETAL 06#??

00 4??# Application range of a

8222 ELEMENT conductivity meter with PVDF nut with S022 adaptor ? 06#??00 06#

00 -ETAL 4??# P (bar) Principle of operation Conductivity is defined as the ability of a solution to conduct electrical current. The load carriers are ions (E.G. dissolved salt or acids). In order to measure conductivity two electrodes are used which are set at a fixed distance apart and with a known specified surface. An AC voltage source is connected to the electrodes. The measured current is a direct function of the conductivity of the solution. The conductivity meter is a two-wire device (single meter version) or a three-wire device (dual meter version) and requires a power supply of

14 V DC (single me- ter version) or

12 V DC (dual meter version) up to

36 V DC. - C=0.1 C=0.01 C=1 The conductivity meter can be fitted with

3 different sensors with cell constants 0.01, 0.1 or 1.0. - M3CM # # # ultra-pure water pure water industrial water sewage water The sensor is selected according to the measuring range and medium by using the table opposite.

8222 ELEMENT p. 4/7 Installation The

8222 conductivity meter can be installed into any adaptor with G1?" external threaded sensor connection by just fixing the main nut. Select and install the required adaptor onto the pipe according to specific requirements of the sensor and material (temperature and pressure). For mounting on a tank or direct mounting on a pipe (DN100 and DN110), an adaptor with a G1?" external threaded sensor connection must be used. Install cautiously the device on the fitting. It can be installed in any position (prefer "A" mounting to install a

8222 with sensor C=0.1 or C=0.01). In order to get reliable measurement air bubbles must be avoided. Please ensure that the mounting location provides a continuous and complete immersion of the sensor in the flow stream. A The device must be protected from constant heat radiation and other environmental influences, such as direct exposure to sunlight. Dimensions [mm] of conductivity meter Type

8222 ? # # # ? ? ? ? # ??

8222 ELEMENT p. 5/7 Ordering information for compact conductivity meter Type

8222 A complete compact ELEMENT conductivity meter Type

8222 consists of a compact ELEMENT conductivity meter Type 8222, a removable display/ configuration module and a Bürkert INSERTION adaptor Type S022 (with G1?" external threaded sensor connection). The following information is necessary for the selection of a complete device: ?Item no. of the desired ELEMENT conductivity meter Type

8222 (see ordering chart on p. 6) ?Item no. of the a removable display/configuration module (see accessories ordering chart on p. 7) ?Item no. of the selected INSERTION adaptor Type S022 with G1?" external threaded sensor connection (see separate data sheet) You have to order two or three components. Attention! When you order devices without display, please take care that you also order at least one display module for the operation. Order no. of the removable display/configuration module, see ordering chart on p.