Differential Gap ControllersThis se

Differential Gap Controllers
This section describes the adjustments and
procedures for calibration and startup. The
adjustment locations are shown in figure 5 unless
otherwise specified. The output of each controller is
checked at the factory before the instrument is
shipped.
To convert a differential gap controller to a
proportional-only controller or vice versa, refer to the
appropriate procedure in the Maintenance section.
If the process pressure can be varied through all or
part of the sensing element range or through the two
desired switching points, use the process pressure
for calibration. If not, provide a pressure source to
simulate the process pressure range for calibration
procedures.
To better understand the adjustments and overall
operation of the controller, refer to the Principle of
Operation section in this manual for differential gap
controllers and the schematic diagram in figure 14.
Adjustments
Adjustment: Set Point
The position of the pressure-setting knob determines
the location of the differential gap within the range of
the pressure sensing element. Move the pointer to
the desired pressure where the output of the
controller should switch from zero to full supply
pressure with rising process pressure (direct-acting
controllers) or with falling process pressure
(reverse-acting controllers).
Adjustment: Proportional Band
The proportional band adjustment shown in figure 5
determines the width of the differential gap. The
width of the gap is the difference between the
process pressures at which the controller output will
switch from zero to full supply pressure, or from full
supply pressure to zero. The relationship between
the proportional band dial setting and the differential
gap is shown in figure 11.
Calibration: Differential Gap Controllers
The output of each controller is checked at the
factory before the unit is shipped. Before placing the
controller in control of a process loop, check to verify
that the controller is calibrated correctly for the
application. The controller must be connected open
loop (Open loop: The controller output pressure
changes must be dead ended into a pressure
gauge).

Hasil (Bahasa Indonesia) 1:

Diferensial Gap controllerBagian ini berisi tentang penyesuaian danprosedur untuk kalibrasi dan startup. Thepenyesuaian lokasi yang ditampilkan pada gambar 5 kecualidinyatakan sebaliknya. Output dari controllermemeriksa di pabrik sebelum instrumenDikirim.Untuk mengkonversi diferensial kesenjangan controller untukhanya proporsional controller atau sebaliknya, merujuk keprosedur yang tepat di bagian pemeliharaan.Jika tekanan proses dapat bervariasi melalui semua atauBagian dari berbagai elemen penginderaan atau melalui duadiinginkan beralih poin, menggunakan tekanan proseskalibrasi. Jika tidak, menyediakan sumber tekanan kemensimulasikan kisaran tekanan proses kalibrasiprosedur.Untuk lebih memahami penyesuaian dan keseluruhanpengoperasian controller, mengacu pada prinsipOperasi bagian dalam manual ini untuk diferensial kesenjangancontroller dan skematik diagram di gambar 14.PenyesuaianPenyesuaian: titik setelMenentukan posisi tombol pengaturan tekananLokasi diferensial kesenjangan dalam jangkauanelemen penginderaan tekanan. Memindahkan pointer kebesar tekanan yang dikehendaki mana outputcontroller harus beralih dari nol sampai pasokan penuhtekanan dengan proses kenaikan tekanan (langsung bertindakController) atau dengan jatuh proses tekanan(reverse aksi controller).Penyesuaian: Proporsional BandPenyesuaian proporsional band yang ditunjukkan pada gambar 5menentukan lebar kesenjangan diferensial. Thelebar kesenjangan adalah perbedaan antaratekanan proses di mana controller output akanberalih dari nol sampai pasokan penuh tekanan atau penuhSuplai tekanan ke nol. Hubungan antaradial sebanding band pengaturan dan diferensialkesenjangan ditunjukkan pada gambar 11.Kalibrasi: Gap diferensial controllerOutput dari controller dicentang diPabrik sebelum unit dikirimkan. Sebelum menempatkancontroller mengendalikan proses loop, periksa untuk memastikanyang controller dikalibrasi dengan benar untukaplikasi. Controller harus terhubung terbukaloop (loop terbuka: controller output tekananperubahan harus mati berakhir menjadi tekanangauge).