Ashcroft GC51 - Industrial Rangeable Pressure Transmitter Manuel d'utilisateur télécharger pdf (Page 6)

1. PREFACE

Thank you for purchasing the GC51 Rangeable Pressure Transmitter. In

order to utilize this product safely please note the preceding warning com-

ments. Refer to Ashcroft Bulletin GC-51 for product specifications and appli-

cable operating conditions.

2. OVERVIEW

The GC51 is a 4-20ma loop powered (two-wire)pressure transmitter with dis-

play incorporating Ashcroft’s polysilicon thin film sensing element which pro-

vides high cycle life, excellent overpressure ratings, high stability and

durability. Digital compensation techniques are employed to provide an accu-

rate output over the stated pressure and temperature range. The compact

design was meant to serve typical industrial applications involving tank level

monitoring, pump control, hydraulic system monitoring and control, compres-

sor control and process automation.

3. FEATURES

A. Linear Scaling Function: The linear (scaling) zero and span values,

4-20mA output signal, are adjustable by the user and the display will show

the proportional output in units noted.

B. Maximum / Minimum Hold Function: Captures the maximum and mini-

mum pressure values as experienced by the GC51.

C. Digital Filter Function: User adjustable damping of the output signal by

means of internally calculated moving average to provide a stable output

signal in applications where the user wants to reduce the pulsating of the

display and / or output signal.

D. LED Back Light: To supplement the LCD display when

conditions require (dark area, night etc.).

E. Loop Check Function: Allows the user to output an analog signal corre-

sponding to pressure without applying pressure, simplifying system main-

tenance and troubleshooting.

F. Zero and Span Adjustment: The adjustment of the Zero (4mA) and

Span (20mA) reading is user friendly via internal push buttons.

G. Rotatable Display: The user can adjust the display in 90 degree incre-

ments allowing for ease of reading with flexibility in mounting orientation.

H. IP65/ NEMA 4X Environmental Rating: Enclosure environmental rating

suitable for indoor and outdoor installation, depending upon operating

temperature range.

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Ashcroft GC51 - Industrial Rangeable Pressure Transmitter Manuel d'utilisateur Page 6