Pressure_Transmitters_21Y_Riels0 pages

21Y

PIEZORESISTIVE
PRESSURE
TRANSMITTERS

PRESSURE

Piezoresistive pressure transmitters for industrial applications

Tutti i dati ed i contenuti di questa scheda sono di proprietà esclusiva di Riels Instruments

Technology: The Y-line transmitters have an extremely small temperature error.
This is achieved using an additional circuit containing a temperature sensor that subdivides the
temperature range into fields that are 1,5 Kelvin (K)wide. The TK zero and TK compensation
values are calculated for each field and programmed into the additional circuit.
During operation, these values are fed into the analogue signal path depending on the
temperature. Each temperature is the „calibration temperature” for this transmitter.
The accuracy thereof is mainly determined by linearity. 120 fieldsare available, representing
a possible temperature range of 180 K. The wider the temperature range, the greater the
amount of testing that is needed to minimise the inaccuracy of the mathematical model.
Flexibility: The extent of the vertical range of manufacture, the modular design and the
programmable electronics make it possible to manufacture large, customer-specific
batches.
The pressure sensors (insulated measuring cells) are manufactured in large quantities and
kept in stock. These are then welded into the required transmitter head, equipped with
electronics and calibrated over the entire temperature and pressure range in systems with
up to 1000 measuring stations. MPM connectors, M12 connectors, Packard connectors
and cable connections are used as standard for the electrical connection. In the relative
pressure version, the ambient pressure is led into the interior via cable or connector.
Outputs: 2-wire (4…20 mA) or 3-wire version with voltage output is available as an output
signal. For a ratiometric 0,5 to 4,5 V version, we refer to the RIELS Series 21G product range.
EMC: The 21Y product line is outstanding due to its extreme ruggedness towards
electromagnetic fields.The limits of the CE standard are undercut by a factor of up to 10 with
conducted and radiated fields. These transmitters are also extremely immune to external
voltages between the housing and the electrical connection, which is particularly important
when frequency converters are being used. The high insulation voltage of 300 V make this
product ideal for use in the harshest of environments.

Specifications
Pressure range (all intermediate ranges possible)
PR-21 Y
PAA-21 Y / PA-21 Y
Overpressure

2…10 bar FS
2…1000 bar FS
2 x cpressure range
max 1100 bar

PAA: Absolute. Zero at vacuum
PA: Sealed Gauge. Zero at 1000 mbar abs.
PR: Vented Gauge. Zero at atmospheric pressure

Riels Instruments Srl

Accuracy
Linearity (best fitted straight
line) 1)
Total error
0...50 °C
band2)
-10...80 °C

Temperature / Stability

standard ±0,25 %FS
max. ±0,5 %FS
max. ±1,0 %FS
max. ±1,5 %FS

Storage &
Operating Temperature
PR Version
Stability
PAA/PA Version

1) Including Hysteresis + Repeatability
2) Linearity + Hysteresis + Repeatability + Temp. Coeff.
+ Zero + Span Tolerance

+39 049 8961771

+39 049 717368 www.riels.it info@riels.it

-40…100 °C
max. ±0,5 %FS
max. ±0,3 %FS