Conductivity and temperature
simulator, SI 85
At last! A replacement for the
classic decades of resistance!
The SI 85 switches an array of highprecision resistances electronically.
It simulates 6 values of conductivity
using resistances. Similarly, it also
simulates 6 different temperature
values, which facilitates verification
of the temperature scale of conductivity meters.
The SI 85 is an instrument for
verifying and self-calibrating lab
conductivity meters and is the
ideal tool for checking complete
installations for conductivity control
in industry.
Key features
The simulated values cover the
whole normal scale, from 1 µS, to
100 mS.
The real value of the simulated
conductivity or temperature can be
viewed on-screen.
Highly stable simulated values.
Long life membrane keypad, for
industrial use.
IP 65 protection.
The instrument can simulate:
- 6 different values of conductivity
- 6 values as a Pt 100 sensor
- 6 values as a Pt 1000.
Signal output comes from an MP-5
connector.
The on-screen conductivity values
are simulated in two different ways:
- ”Uni” objective values, measured
with a standard multimeter.
- ”GLP”, adapted values,
compensating for the length of the
cell cable for calibrating GLP CRISON
conductivity meters.
75
The instrument automatically
switches itself off if no keys are
pressed for 5 minutes.
This function can be disabled by the
user.
Uses very little electricity. With the
instrument on, the batteries will last
approximately 180 hours.
Low battery level indicated.
Practical case, optional, to keep the
instrument safe and carry it around.
Certificates
The SI 85 is supplied with the
specifications Certificate and the EC
Declaration of Conformity as per
directive EMC 89/336/EC.
With code 85 02 the instrument
is supplied with an ISO Calibration
Certificate, issued by the CRISON
calibration lab.
For further information, please see
page 132.
Re-calibration
There is very little drift over time in
the SI 85, thanks to its high-quality
components.
However, to ensure that the
simulated values are exact, CRISON
recommends annual calibration.
Laboratory Catalogue 2004
1st Edition
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76
SI 85 (continued)
Display examples
Keypad
The user can access
all the instruments
functions using only
4 keys.
Simulation χ
Simulated
value
Universal
GLP CRISON
Cell
constant = 1
Technical specifications
Temperature simulation (Pt 1000)
Simulated sensor,
Pt 1000
�
Operation
The SI 85 software is similar to that
of all other CRISON portables, and
has been designed to make using
this new range of instruments as
easy as possible.
Simulated
temperature
Temperature simulation (Pt 100)
Simulated sensor,
Pt 100
Simulated
temperature
Cables for adapting the SI 85
to various conductivity meters.
Simulated values*
Conductivity
Temperature, Pt 100
Temperature, Pt 1000
1.0, 10.0, 100.0, 1000 µS and 10.00, 100.0 mS (at 25ºC)
-23.0, 0.0, 25.0, 50.0, 100.0 and 200 ºC
-23.0, 0.0, 25.0, 50.0, 100.0 and 200 ºC
Resolution
Conductivity
Temperature
Depending on the simulated value
0.1 ºC
Error (± 1 digit)
Conductivity
Temperature
≤ 0.2%, range 100 mS ≤ 1%
≤ 0.1 ºC
Reproducibility
(± 1 digit)
Conductivity
Temperature
≤ 0.1%, range 100 mS ≤ 0.3%
≤ 0.1 ºC
Thermal drift
Conductivity
Temperature
≤ 15 ppm, range 100 mS ≤150 ppm
≤ 15 ppm
Connector
MP 5, five-contact multipin
IP 67 Protection
Automatic switch off
After 5 minutes, with option to disable this function
Display
Liquid crystal with pictograms
Keypad
Membrane, 4 keys. Guaranteed for up to 6 million strokes
per key.
Material: PET with protective treatment
Power supply
Two 1.5V, type AA batteries, autonomy > 180 h.
Electrical safety
EN 61010-1
EMC (Electromagnetic compatibility)
Meets EC, EN 61326
Degree of protection
IP 65
Permitted ambient conditions
Operating temperature 10...40ºC
Storage and transport temperature –15... 65ºC
< 80 % relative humidity, non-condensing
Enclosure
Casing material: ABS
Physical parameters
Weight 190 g,
Dimensions 160 x 74 x 50 mm
(*) The simulated values are close to the above mentioned values.
The real simulated values appear on the instrument display.
Specifications suject to change without notice
Ordering information
94 30
94 31 / 94 40
94 32
Code
Description
85 00
Simulator SI 85
85 01
Simulator SI 85, with carry case
85 02
Simulator SI 85, with carry case and certificate of calibration
94 30
Cable from SI 85 to BASIC 30, GLP 31 and 32 conductivity meters.
94 31
Cable from SI 85 to CM 35
94 32
Cable from SI 85 to terminal strip connection of CM 38, CM 39, etc.
94 40
Cable from SI 85 to PH 25 and TM 65
Laboratory Catalogue 2004
1st Edition