Katalog Produk

Keterangan

DESCRIPTION
HD 2007T... and HD 2008T... are microprocessor configurable humidity and
humidity-temperature 4÷20 mA transmitters. The temperature range is
configurable. They convert humidity and temperature values into two linear current
signals (2 wires) in the field 4÷20 mA. In the humidity-temperature combined
version, the two circuits and the related outputs are completely independent one
from the other. The linearization based on digital technique grants best accuracy
and stability. Programming is carried out very easily by pressing a button. No
operation by means of jumpers, potentiometers, etc. is requested. The humidity
input can be recalibrated using two saturated solutions: the first one at 75%,
the second one at 33%; the 0% R.H...100% R.H. relative humidity range is
fixed and 4 mA correspond to 0% R.H., while 20 mA to 100% R.H. In HD 2008
model, the operator can configure 4÷20 mA (or 20÷4 mA) temperature output in
any range going from -50°C up to +200°C with 25°C minimum amplitude. A LED
indicates the alarm states (temperature exceeding set-point, sensor failure or
short-circuit) and helps the operator when programming. Important remark: the
relative humidity sensor may work in a -40...+150°C temperature range. Beyond
this range till +180°C it can work for brief periods.
TECHNICAL DATA (@ 20°C e 24 Vdc)
Relative humidity input
HD 2007 HD 2008
Model MK 33
Capacity 300pF nom.
Accuracy at 20°C ±2% (5±90%)
±2.5% (in the remaining range)
Relative humidity operating
range 5...98% R.H.
Temperature operating range
of relative humidity sensor -40...+150°C - compensated
Wire length TC version = 1.5 m, 5 m and 10 m
Working static pressure of
sensor 20 bar
When using the transmitter, check sensor compatibility with the atmosphere where it is installed
Temperature imput
Sensor ---- Pt100, 100 © at 0°C (±=0.00385)
Connection ---- 3 (or 2) wires
Transducer energized ----