Technical data
SenTix
®
FET-D/B
38
7
Technical data
General features
pH measuring principle
pH sensitive field effect transistor (ISFET)
Temperature measuring
principle
Integrated temperature sensor (NTC)
Dimensions
(in mm)
Length of the sensor
190 mm (without cable),
200.5 mm with light shield
Weight
170 g (with 1.5 m cable)
Storage
temperature
-5 °C ... 40 °C (for a short time -5 °C ... 50 °C)
Materials
Internal electrode
Silver/silver chloride
Junction
porous, sintered polyethylene
Sensor
Tantalum pentoxide, platinum, ABS, epoxy
resin, polyethylene resin
Light shield
PE-LD
Connection cable
Length
1 m
Plug type
BNC plug or DIN plug for pH,
banana plug for temperature
Measurement
conditions
Measuring range
pH 0 ... 14
Temperature (measured
medium)
Temperature (environment)
0 ... 60 °C
0 ... 40 °C
Depth of immersion
min. 20 mm (min. 30 mm with light shield)
max. 70 mm (min. 80 mm with light shield)
Working life
approx. 200 operating hours at 25 °C
(depending on the operating conditions - continuous measurement or
storage in liquids reduces the lifetime of the measuring tip)
Power supply
Batteries
2 x 1.5 V, type CR 2032,
not rechargeable
Operating time
approx. 500 operating hours (the operating
time of the supplied batteries can be shorter)
Applicable
guidelines and
norms
EMC
EC directive 89/336
EN 61326 : 1997/A3:2003
Instrument safety
EC directive 73/23; EN 601010-1:2001
Test certificates
CE
