OPERATING MANUAL
MN-SST77B
ED-18-01
SPRIANO® TECHNOLOGIES
- www.spriano.it – [email protected]
a TERRANOVA® Srl brand
- www.terranova-instruments.com - VAT IT07848810151
Factory & Sales: Via Gramsci 1 – 26827 Terranova dei Passerini (LO) – Italy
Head Office: Via Rosso Medardo 16 – 20159 Milano – Italy Ph: +39 0377 919119 – Fax: +39 0377 855720
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DATA
SHEET
FUNCTIONAL DATA
With reference to the following, please note
these definitions:
Nominal range
: (referred to the sensor
mounted in the instrument) the measured
pressure range for which the sensor has been
designed. Defined as a minimum and
maximum value.
Nominal span:
the interval between the
minimum and maximum values of the sensor
nominal range. The span is a single number.
Measuring range:
the minimum and maximum
range values for which the transmitter is to
be calibrated.
Measuring span:
the interval between
minimum and maximum values of the
measuring range.
Input scale initial value or zero input:
minimum pressure value within in the
measuring range.
Input full scale value
: maximum pressure
value within in the measuring range.
TRANSMITTER PARAMETERS
The parameters that are available for display
and setting are:
Measuring span:
possibility to change from
3.33% to 200% of the nominal span.
Zero adjustment:
digital calibration ± 15%.
Low/upper range values:
they can be set
within the nominal range provided that the
span > minimum span.
Damping:
digitally adjustable from 0 to 60
sec. (minimum response time ~ 0,1 sec.).
Reverse output:
automatically obtained via
software.
Transfer function:
linear/square root via
software.
Self-test:
in case of malfunction the analog
output is forced to the fail-safe state of
3.85mA or 21mA.
Measuring units:
18 different pressure units
or % of the
measuring span, selectable via software.
PHYSICAL CHARACTERISTICS
Power supply
: 12,5 - 30 Vdc
Output signal:
Analog 4-20 mA, 2 wires.
Digital using HART® protocol
Response time:
<256 ms (Std Hart®)
Measured value update frequency:
4-20 mA + Hart® output:
̴
1s
Hart® output only:
̴
500 ms (on request)
Polling time:
4-20 mA + Hart® output:
̴
800 ms
Hart® output only:
̴
500 ms (on request)
Nominal range 18-50 mbar:
Max static pressure:
50bar.
Overpressure limits:
50bar on either side.
Nominal range 350-10000 mbar:
Max static pressure:
100bar.
Overpressure limits:
100bar on either side.
AMBIENT CONDITIONS
Temperature:
Process fluid
: -40 ÷ +80°C (with capillary: up
to 283°C)
Housing
: -40 ÷ +80°C
Handling and storage
: -40 ÷ +90°C
Relative Humidity
: 0 a 100% R.H.
LCD display reading
: -10 ÷ +65°C
PERFORMANCES
Total accuracy
1
:
<0.1%FS
Dead band:
negligible.
Display
resolution: 0.1
1
Including hysteresis, non-linearity, non-conformity and non-
repeatability (IEC 60770).
Accuracy and drifts are given for instruments with integral sensor
and diaphragm; they may vary according to sensor type and
diameter, thickness and material of the diaphragm.
