Series 200 differential pressure transmitter
HNL’s Series 200 differential pressure transmitter uses a
microprocessor to provide a 4-20mA output proportional to the differential
input pressure. Ranges are available from 0 to 15 mBar up to 0 to 4000
mBar.
The transmitter is loop powered (2 wire system) from a 24Vdc supply.
The input pressure to the transmitter is applied to a metal diaphragm that
transmits the pressure to the silicon pressure transducer using a silicone
oil fill.
The 4-20mA output has a 5:1 turndown (i.e. the 4-20mA output may be
obtained over just 20% of the pressure range of the transmitter) and the
zero may be offset by up to 80% of the range. Note the 214DP & 214DPZ
are limited to a 3:1 turndown.
Calibration is carried out using pushbuttons inside the enclosure.
Simply apply the pressure that is required to give a 4mA output and press
the green pushbutton. Then apply the pressure that is required to give a
20mA output and press the red pushbutton.
Other settings can be selected using the four DIP switches inside the
enclosure as follows-
- Sets Output to a constant 4mA.
- Sets Output to a constant 20mA.
Options 1 and 2 are for
calibration but may also be used for testing of external circuit.
- Output signal is reversed giving a falling output current (20 - 4mA)
for a rising input pressure.
- Applies square root extraction. Enables the transmitter to provide
an output proportional to flow when used with a orifice plate (or
similar).
Accuracy
Linearity error : +/-0.15% typical, +/-0.35% max.
Temperature coefficient:
0.02% per ºC within range -20 ºC to +80
ºC.
Power Supply
Nominal power supply 24Vdc, 30mA. Minimum supply
voltage 12Vdc.
Notes:
A large number of flanged and chemical seal connections are
available as special options. Please contact HNL Technical Sales for
details.
Two mounting bracket options are available: Prefix the model
code with -
P for 2” pipe mounting bracket (as shown
below)
U for Universal wall mounting bracket. |
