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SE101-MS pH Sensor: Instructions for Use
WARNING – Failure to observe this warn-
!
ing may result in serious injury.
The safety alert symbol on the nameplate
means:
Read these instructions for use, observe the Spec-
ifications, and follow the Safety Instructions.
1 Safety Instructions
Hazards due to pressure, temperature, or aggressive
media are possible, depending on the location of
use. Therefore, the operation and servicing of the
sensor shall only be carried out by suitably trained
personnel authorized by the operating company.
Be sure to wear safety goggles and gloves when
cleaning or calibrating a sensor using acid or alka-
line solutions.
2 Sensor Description and Intended Use
The SE101-MS sensor is equipped with Memosens
technology. The benefits are a safe function due to
perfect galvanic isolation, digital data transmission
and an integrated sensor diagnostics, among others.
The connection is insensitive to dirt and humidity.
The integrated temperature detector provides auto-
matic temperature compensation during calibration
and operation of the sensor. The sensor is designed
for simultaneous measurement of pH and tempera-
ture in industrial processes, particularly in the field of:
drinking water, wastewater, water processing.
The markings on the sensor or on the packaging label
include the following information:
Manufacturer of sensor
SENS
MEMO
Memosens logo
SE101-MS
Model
0 ... 14
pH range
-5 ... 80 °C
Temperature range
CE conformity mark
The calibration data, operating time, sensor desig-
nation, and serial number are stored in the sensor
head. The serial number is also printed in the quality
certificate and on the packaging label. The sensor fits
into the sensor quiver of a portable meter from the
Portavo series.
The O-ring
seals the quiver.
3
3 Commissioning
• On unpacking, check the sensor for mechanical
damage. Report any damage to your Knick service
team.
• Remove the watering cap and briefly rinse the sen-
sor with pure water. After rinsing, the sensor should
only be dabbed dry with a tissue. Do not rub the
pH-sensitive glass, since this can lead to electrostat-
ic charging and sluggish response times.
• Connect sensor and cable.
4 Operation
4.1 Calibrating the Sensor
2-point calibration is recommended for the SE101-
MS sensor. The sensor is dipped successively into two
different buffer solutions with given pH values (e.g.,
pH 7.00 and pH 4.00). Please refer to the user manual
of the pH transmitter for further details. The resulting
calibration data (slope and zero) are saved directly in
the sensor. Memosens sensors can be pre-calibrated
in the lab. Therefore, calibration on site is not nec-
essary.
4.2 Positioning
The sensor can be operated vertically or inclined up
to 15° off horizontal.
5 Maintenance and Cleaning
Never keep or store the sensor dry! You should store
the sensor with fitted watering cap containing elec-
trolyte (3 mol/l KCl). Clean the sensor (glass mem-
brane and junctions) with clean water after each pro-
duction cycle and regularly in case of heavy pollution.
6 Specifications
Model:
SE101-MS
pH:
0 ... 14
Temperature:
-5 ... 80 °C
Length:
110 mm
Glass membrane: approx. 50 MΩ (25 °C)
Junction:
2 ceramic junctions
Body material:
polysulfone
Reference system: Ag/AgCI with polymer
electrolyte
7 CaliMat pH Buffer and KCl Solution
Order No.
Buffer
4.00 ( 20 °C)
CS-P0400/250
Buffer
7.00 ( 20 °C)
CS-P0700/250
KCl solution
3 mol/l
ZU 0960
For more buffer solutions and electrolytes, see
www.knick.de
8 Disposal
Observe the applicable local or national regulations
for disposal.
Manual
SE101-MS
MEMO
1
Ø 12 mm
Memosens connector
1
2
Serial number
O-ring seal for quiver
3
4
Nameplate
Plastic body
5
Junctions
6
pH glass
7
Protective bars
8
Knick Elektronische Messgeräte GmbH
& Co. KG
Beuckestraße 22
14163 Berlin
Germany
Phone: +49 30 80191-0
Fax:
+49 30 80191-200
Email:
info@knick.de
Web:
www.knick.de
SENS
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