Aplisens PM-22 Manual do utilizador - Página 4
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1. APPLICATION. MAIN FEATURES
The PM-22 transmitters are intended to convert standard pneumatic signal 20...100 kPa on the electrical signal
4...20 mA. The PM-22 pressure transmitters can only be used for the measurement of nonaggressive gases.
2. USER MATERIALS
The transmitter and clamping ring are delivered in single and/or multiple packs. Together with the transmitter
user receives: User's Manual numbered IO.PM-22.01
the warranty card.
3. IDENTIFYING MARKS. ORDERING PROCEDURE
Every transmitter carries a rating plate containing at least the following information: name of manufacturer,
product type, series number, measuring range, output signal and power supply.
For information about order code of the PM-22 transmitter please refer to the information in the Catalogue.
4. TECHNICAL DATA
4.1. Measuring ranges
Standard measurement range: 20...100 kPa.
In the case of special transmitter version, measuring range can be set from -100 to 200 kPa,
measuring span set at 1 kPa.
4.2. Parameters (for standard version)
Output signal
Accuracy
Power supply
Hysteresis and repeatability
Thermall error
Temperature compensation range
Overpressure limit
Load resistance
Weight
4.3. Permitted environmental conditions
Operating temperature range
Relative humidity
Vibration during operation
g - acceleration of gravity
5. CONSTRUCTION
The piezoresistant silicon sensor is used as a pressure measuring element.
The input pressure is connected via process connection fitting into the ø6x1 flexible tube. The output signal is
connected via screw terminals which are suitable for wiring cross-sections up to 1.5 mm².
The special transmitter version can be equipped with an electrical connection DIN 43650 Connector.
The housing is equipped with the clamping ring used for mounting, and in standard version - the cork allowing
access to the "zero" and "span" potentiometers. The housing and process connection (fig.1a) are made of
brass with nickel coating.
6. INSTALLATION AND CONNECTIONS
The PM-22 transmitter should be mounted in confined spaces, free of dust, corrosive gas, etc.
non-compliance with these conditions, transmitter must be installed in enclosure which provides appropriate
protection.
Gas that is a working medium should not contain dust, oil, water, contaminations aggressive agents,
solids larger than 1.5 µm, relative humidity ensuring that dew point temperature is not lower than 10 ºC
from the ambient temperature (acc. to EN 60654-2:1999).
2
) and Product Certificate, which is also as
(ENG
4...20 mA
0.16%
8 ÷ 36V DC
0.05%
0.2% / 10ºC
0 ÷ +50ºC
250kPa
R[] = (U - 8V) / 0.02A
0.05kg
0 ÷ 60 ºC
-25º ÷ 60 ºC (in additional booths)
to 80% without condensation
max 4g
IO.PM-22.01(ENG)
with
minimum
In the case of