Ashcroft GC35 User Manual

Quick Start Function Instructions for

5

Collector/switch 1
LED operation
indicator (OUT 2)

1

4 Digit, 8mm

LED display

4

UP key

3

DOWN key

2

MODE key

6

Setting mode
LED operation
indicator (SET)

5

Collector/switch 1
LED operation indicator
(OUT 1)

2.00˝

3´.00˝

GC35 Heavy Duty Digital Pressure Sensor
Version 1.0 6/06/09

(See Complete I&M Manual for Further Detail)

DISPLAY OVERVIEW

 Measurement Display

 Mode Key

 Down Key #

 Up Key $

 Collector / Switch LED

Operation Indicator
(OUT1)/(OUT2)

 Switch Setting Mode LED

Operation Indicator (SET)

Note: Unit requires M12 mating connector p/n# 611C175-03

© 2010 Ashcroft Inc., 250 East Main St., Stratford, CT 06614-5145, USA, Tel: [phone], Fax: [phone],
www.ashcroft.com All sales subject to standard terms and conditions of sale.
8/10 I&M011-10182-GC35 Ver. 6.03 Rev. B

(standard 3 foot length) – see below.

Designation

MODE

Function

Display of pressure, linear scaling

Change to/from switch setting modes and
product’s settings

Change selections / decrease set values

Change selections / increase set values

Indicates switch state. LED indicator will be ON
when switch is activated

Identifies that the switch setting has been
performed

1. Measurement Mode is entered when applying power to the unit – LED displays

PRESSURE RANGE (%F.S.)

ANALOG OUPUT (mA dc)

-100 -50 0 50 100 150

20

16

12

8

4

PRESSURE RANGE (%F.S.)

ANALOG OUPUT (mA dc)

-100 -50 0 50 100 150

20

16

12

8

4

applied pressure.

2. Available “Measurement Mode” functions:

A. Zero Adjustment: Press MODE / # keys together ⱖ 3 seconds. This initiates

automatic zero adjustment; ADJ briefly appears on LED display and then returns
to Measurement Mode.

B. Peak / Bottom (Min. Max.) Hold Display: Displayed as $ or # keys are held

for more than 3 seconds and display shows PE+. Values are reset when power
is restored to the unit, or:
Reset Peak: Hold $ key, then press # key
Reset Bottom: Hold # key, then press $ key

C. Key Lock: Prevents overwriting values / tampering – can not be reset by restor-

ing power.
Lock:Press MODE and $ keys together;Lo( appears on LED display for 1 second.
Unlock: Press MODE and $ keys together; UnL appears on LED display for 1
second.

3. Function Setting Mode: Used for product settings, except comparator-switch set­ting. Accessed by pressing MODE key for more than 3 seconds (complete menu
attached).

A. Comparator Selection: Select ‘Hysteresis’ (kYS) or ‘Window Comparator’ (Yn).

Hysteresis: Switch remains activated until reset point has been achieved.
Window Comparator: Switch activates each time pressure enters a set ‘pres­sure band’ determined by the A and B settings.

B. Comparator Operation Selection: Select nPn or PnP. Note: LED ring is Blue

with nPn and Green with PnP.

C. Filter Dampening Setting: This is based upon a moving average of pressure

data to reduce display “bounce” and smooth analog output due to system pres­sure fluctuations. User configurable with five selections:
25ms, 250ms, 2.5s, 5s and 10s.
Filter will not be applied if 0 is selected.

D. Power-Save (Energy-Saving) Setting: Product is equipped with automatic

LED display turn-off feature. User may elect to turn-on display when reading
pressure or using as an indicating instrument.

E. LED Ring Feature Setting: Turns Red when comparator-switch is ON and Blue

(nPn) or Green (PnP) when comparator-switch is OFF.

F. Display Unit Setting: User may alter unit of measures from standard to arbitrary.
G. Display Settings: Allows for decimal point adjustment.
H. Analog Output Scaling: Available with only 1 comparator; function sets analog

output for pressures corresponding to Zero (4mA) and Span (20mA) adjustment
in percentage figures.
Analog output under zero point pressure: After A-L is displayed, select the per­centage corresponding with the current analog output value under Zero (4mA)
using
# or $ keys – when pressure range displayed is set to 0.0-100.0% FS.
Analog output under span point pressure: After A-K is displayed, select the per­centage corresponding with the current analog output value under Span (20mA)
using
# or $ keys – when pressure range displayed is set to 0.0-100.0% FS.

Example 1) Example 2)

2