Boiler house
Conductivity sensors
Local regulations may restrict the use of this product to below the conditions quoted.
In the interests of development and improvement of the product, we reserve the right to change the specification without notice.
© Copyright 2014
TI-P403-45
AB Issue 6
S20
Sensor Chamber and Sensors
Description
The Spirax Sarco S20 sensor chamber is fitted with conductivity and
temperature sensors used to determine the conductivity of liquids.
The use of a temperature sensor enables an accurate measurement
to be made when the temperature varies, as in the case of condensate
return monitoring systems.
The hexagonal in-line sensor chamber is available screwed
11⁄4" BSP or 1" NPT.
Adjacent radial female screwed connections are provided for:
- CP10 conductivity sensor ( " BSP).
- TP20 temperature sensor (1⁄4" BSP).
An additional 1⁄4" BSP (1⁄4" NPT) connection is provided on the other
side of the chamber for taking a sample if required.
Spirax Sarco can supply a sample cooler for cooling hot samples,
or a blanking plug if the connection is not required.
Principal features:
-
Allows continuous temperature compensated measurement
-
Purpose designed sensor chamber for in-line mounting
-
Simple removal of sensors for cleaning
Limiting conditions
The sensor chamber assembly inclusive of sensors is limited to:-
S20 sensor chamber
conductivity
sensor
CP10
TP20
temperature
sensor
Maximum pressure
Maximum temperature
Minimum conductivity
Materials
S20 sensor chamber
Body
Insulator
CP10
Pin
conductivity
sensor
Seal
Disc springs
Washer
11 bar g
150°C
10 μS/cm or 10 ppm
Maintenance
The equipment requires no specific maintenance other than periodic
inspection and cleaning as described in the Installation and
Maintenance Instructions.
How to specify
In-line sensor chamber with conductivity and temperature sensors.
How to order
Example: 1 off Spirax Sarco S20 sensor chamber complete with
CP10 sensor, PT2 plug tail, 1⁄4" BSP blanking plug, and TP20
temperature sensor.
Body and
TP20
probe
Stainless steel
Stainless steel
PEEK
Stainless steel
PTFE
Stainless steel
Stainless steel
Stainless steel
316
PFA
BS 970 303 S31
BS 970 303 S31
BS 970 303 S31
DIN 1.4122
A2 BS 4320
ASTM A269 Gr. 316
Dimensions (approximate) in millimetres
Standard
length
1 250
1 250
TP20 temperature sensor
*
1⁄4" BSP sample connection
Weight
1.9 kg
temperature
sensor
Cable
insulation
98
CP10 sensor shown
with PT2 plug tail
fitted
60 A/F
*
Bore Ø35
11⁄4" BSP
or
Bore Ø26
1" NPT
Safety information
This document does not contain enough information to install
the product safely. Refer to the Installation and Maintenance
Instructions provided with the product.
The CP10 sensor contains PTFE wich can give off toxic fumes
if exposed to excessive heat.
Installation
Caution: Do not install the sensor outdoors without additional
weather protection.
The sensor chamber may be fitted in a vertical or horizontal pipeline
with suitable isolation valves to allow inspection/cleaning of the
sensors. Reducers may be fitted if required. Flow can be in either
direction. The sensors themselves must be horizontal. For full
information see the Installation and Maintenance Instructions.
Caution: Ensure the PT2 wire is not exposed to a temperature
greater than 120°C.
120
2.5.6
