Simplex GD2 Digital Gauge - 55652_b User manual

Brand: Simplex

Model: GD2 Digital Gauge - 55652_b

Type: User manual

55652 Rev. B 12/2019

Instruction Sheet

GD2 10,000 PSI

Digital Gauge

The model GD2 digital pressure gauge has several features not normally found as standard in digital pressure

gauges. These include the analog scale, tare, and peak holds. The analog scale is a 40 segment display

that appears around the edge of the liquid crystal display. This scale represents the pressure reading as a

percent age of full scale, and each individual segment equals 2.5%. The tare feature provides a method of

zeroing out an existing oset such as the weight of the platform on a hydraulic scale. The hold feature allows

the user to select Hi or Lo. When the hold is enabled the reading displayed is the highest or lowest pressure

experienced in the system since hold was enabled, and this information will continue to be updated at the

rate of six times a second until hold is disabled.

A) ZERO OR “TARE OUT” AND EXISTING OFFSET:

1. Press and hold the “MODE” key until the reading starts ﬂashing. Release “MODE” key.

2. Press “ENTR” key until the reading becomes 0000. NOTE: Tare range is 100% full scale.

3. To return to the gross reading press and hold “ENTR” then with “ENTR” still depressed press “MODE”

until the reading returns to the Gross, then release both keys.

B) TO SELECT PEAK HI OR PEAK LO HOLD FUNCTIONS:

1. Press and hold the “MODE” key until the reading starts ﬂashing. Release “MODE” key, then press

the “MODE” key once more, the display will read “HOLD”. Press “ENTR” key once, the display will

read”NO H”. Using “▲” or “▼” keys select “NO H” (no hold), “H LO” (peak low hold), or “H HI” (peak

high hold). Press “ENTR” key to lock your selection.

NOTE: When the hold function is enabled “PEAK” is displayed, this will be the same for “Hi” or “Lo” Hold.

YOU MUST REMEMBER WHICH YOU HAVE ENGAGED.

2. To reset after capturing a Hi Peak or Lo Peak, press and hold “MODE” key until the reading starts

ﬂashing. Release the “MODE” key, then press “ENTR”, hold momentarily, then release.

3. To disengage Hold, press and hold the “MODE” key until the reading starts ﬂashing. Release the

“MODE” key, then press the “MODE” key once more, the display will read “HOLD”. Press the “ENTR”

key once more and the display will return to reading the system pressure.

C) ZERO TRIMMING:

Should it be necessary to readjust the Zero setting, an adjustment has been provided. Prior to ad-

justing the zero, verify that you are displaying the “gross” zero reading by performing step A.3. In the

upper left of the rear of the case, there are two cover screws labeled “Z” and “S”. Remove the screw

covering the ‘7”, and utilizing a jewelers screwdriver turn the small screw to re-zero the unit. The ideal

zero is indicated by a reading of 0000 with an intermittently ﬂashing “-” sign.

NOTE: DO NOT READJUST THE “S” AS THIS WILL INVALIDATE THE FACTORY CALIBRATION.

Description

The GD2 digital gauge combines the best features

of analog and digital instruments. The 0.75 in. high

full 4 digit display is easily read at a distance and

the “analog” bar graph allows instant estimation of

changing pressures and gives visual indication of alarm

set points. The all stainless steel sensor is vibration

and shock resistant, and unlike mechanical gauges is

immune to the eects of pulsating pressures. Available

options include RS232 output, alarm set points,

0-2V analog output, and 4-20 mA transmitter output.

Battery Powered Digital Gauge

Oers Digital and Analog Display

with Standard High or Low Peak Hold

Features

■ Self Powered

■ Extra Large Full 4-Digit Display With .75 in.

Characters and 270 Degree Bar Graph “Analog”

Readout

■

Direct Reading to 10,000 PSI

■ Splash Proof Phenolic Housing,

NEMA 4 Sealing Optional

■

Automatic Light-Actuated

Battery-Saver Circuit

■

Microprocessor-Based Circuit

■ ± 0.25% of Full Scale Accuracy

■ Keypad Enable/Disable of Peak High

Or Peak Low Hold

■

Auto “Tare” (Zero) Feature

Applications

Portable test gauge (± 0.1 % accuracy available).

Process control combined with local indication.

Highly cyclic pressures where mechanical gauges

are failing. Burst tests (with peak hold). Severe envi-

ronments.

Speciﬁcations

PERFORMANCE

Standard Pressure Ranges: ....0-20 to 0-10,000 psi Gauge or Absolute

Overpressure: .........................2x full scale without damage

Burst Pressure: ....................... 10x full scale or 20.000 PSIG

whichever Is less

Pressure Cavity Volume: ........0.095 in

Accuracy (linearity, hysteresis,

and repeatability): ................... ±0.25% of full scale (±0.1 % optional)

Compensated Temperature Range:

..................30 °F to 130 °F

Thermal Zero Shift .................... ±0.02% F.S./°F

Thermal Sensitivity Shift: ........... ±0.02% F.S./°F

Resolution (Transducer): ......... Inﬁnite

(Display): ...............1 part in 10,000

Life: ...........................................10 million cycles minimum

ELECTRICAL

Batteries: ................................. 1 ea. 3.6v Lithium (standard)

Life....8,000 HRS

2 ea. 3.6v Lithium (optional)

Life....16.000 HRS

2 ea. 1.5v Alkaline (optional)

Life....3,000 HRS

Display: .................................... 4 digit LCD, 0.75" Digits and

40 segment bar graph

On/O Control: .......................By Light Actuated Switch Circuit

Hold: Peak Hi/Peak Lo ...........Keypad Enable/Disable

Auto “Tare” .............................. Keypad Operated Auto Zero

ENVIRONMENTAL

Storage Temperature: ............-40 °F to +160 °F

Operating Temperature: .........0 °F to +160 °F

Compensated Temperature: ... 30 °F to +130 °F

PHYSICAL

Construction Materials

Case: ........................................ Splash Proof Injection Molded Phenolic,

NEMA 4 Sealing Optional

Wetted Materials: ................... 15-5 or 17-4 P.H. Stainless Steel

316 S.S. available at no extra charge

D) RE-CALIBRATION:

This procedure requires a known pressure source of at least ±0.1% accuracy in order to fully utilize the ac-

curacy potential of the GD2. If not available, gauge can be returned to Simplex for re-calibration.

1. With no pressure applied (port vented), adjust zero as per instruction in A.3.

2. Apply full scale pressure to the pressure port and adjust the span (“S”) pot until display reads the

correct pressure.

3. Recheck zero and re-adjust the zero (“Z”) pot if required.

4. Repeat steps 2 and 3 until no further adjustment is required.

E) BATTERY REPLACEMENT:

1. To access the battery, the unit must be partially disassembled. Remove the thread ring surrounding

the lens by turning counter clockwise. Carefully turn the unit face down with one hand prepared to

“catch” the lens and display board as they fall from the housing. Do not allow the display board to fall

more than an inch or two as there are wires connecting it to the main housing.

2. Remove the battery or batteries from the holder(s) and replace with the same type that was re moved,

taking care to observe the correct polarity.

F) ANALOG OUTPUT SIGNAL OPTION:

The analog output signal is available on pins B and C of the circular 6 pin connector located on the

rear of the unit. The signal is short circuit protected and capable of driving low impedance external

loads with ﬁxed gain to a speciﬁed output level, generally 0 to 2.0 VDC with 10K Ohm and above

loads. Frequency response is a function of the pressure range, generally 1 to 3 KHZ. Loading of the

analog output will result in a reduction of the battery life expectancy due to the additional current

through the external load.

N86 W12500 Westbrook Crossing

Menomonee Falls, WI 53051

Phone - USA Only: 1 (800) 323-9114

Phone - Inside/Outside USA: 1 (262) 293-1575

Fax: 1 (262) 597-1127

ww w.tksimplex.com

Simplex GD2 Digital Gauge - 55652_b User manual

Brand: Simplex

Model: GD2 Digital Gauge - 55652_b

Type: User manual

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Simplex GD2 Digital Gauge - 55652_b User manual

Simplex GD2 Digital Gauge - 55652_b User manual

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