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TY-GC31-004A 

13/24 

 

 

 

Rev.B 

6. Noise prevention 

 

 

Power line

 

 

If noise remains in the power line, it may cause malfunctions such as fluctuation of display.

 

Take 

care not to tangle the AD/DC power line. Also, use a stable power source that has high noise 
rejection ratio and will not cause ripple voltage.

 

 

 

 

 

Output routing

 

 

In the open collector output circuit, since output line and internal circuit are connected directly, 
pay attention not to tangle lines. Also, make connection cables as short as possible. 

 

 

 

 

 

Induction noise

 

 

Induction noise from outside sources may cause malfunctions.

 

In this case, separate the device 

from the noise source, change direction, and use a magnetic shield or an electrostatic shield. 

 

 

 

 

 

Lightning surge

 

 

Lightning surge may cause malfunctions.

 

Please connect this unit to indoor distribution network 

which is free from influence of lightning surge.

 

 

 
Noise issues are complicated and many of them cannot be solved easily. 

 

If measured values 

often fluctuate or differ, they may be affected by noise 

 

In this case, take noise prevention 

measures described above.

 

 

 

7. Storage location 

 
 

Do not store this device in the following places as it may cause malfunction and 
damage. 

  Any place that water can reach. 

  Any place where there can be negative influence of atmosphere, temperature, 

humidity, sunlight, dust, salt or sulphuric air. 

  Any places where there is vibration or shock (including during transportation). 

  Any place where chemicals are stored or where there are releases of gas. 

  In direct sunlight or inside a hot vehicle. 

 

8. Maintenance 

 
In this unit, there are no moving parts in the sensing element and circuit components so 
basically there will be no maladjustment. However, depending on the use condition, aging may 
occur so biannual regular check is recommended.

 

For the zero point adjustment, perform it 

following the instructions of zero point adjustment herein.

 

 

Since plastic molding material is used for the case part of this device, make sure not to touch it 
with soldering iron, etc.

 

 

Also, chemicals may have an adverse effect on the case so ensure 

that none come in contact.

 

 

Caution

 

 

Summary of Contents for GC31

Page 1: ...TY GC31 004A Rev B GC31 Digital Pressure Gauge Instruction Manual NAGANO KEIKI CO LTD Oct 2023 8 0...

Page 2: ...structions of this instruction manual Incorrect wiring may cause injury or a fire 6 Use this device within the operating temperature range Using outside the range of operating temperature may cause ma...

Page 3: ...usage which does not follow the cautions operation conditions instructions specified in this manual Fire earthquake water damage or other natural disaster Contents 1 Specifications 3 2 Outline drawing...

Page 4: ...ere flammable or Explosive gasses or liquids are present Connecting screw 1 R1 8 with M5 female screw Range less than 1MPa R1 4 G1 4B Accuracy Display accuracy 1 0 F S 1 digit at 23 Temperature charac...

Page 5: ...ase part PC ABS Rear case part ADC 12 Wetted part material Sensor part SUS 630 17 4 PH Fitting part SUS 304 Mounting clamp Key L shaped bracket SPCC t1 6 material Option Panel adaptor PC ABS 2 Cable L...

Page 6: ...TY GC31 004A 5 24 Rev B 2 Outline drawing Vertical mounting GC31 124 GC31 164 GC31 174...

Page 7: ...TY GC31 004A 6 24 Rev B Horizontal mounting GC31 324 GC31 364 GC31 374...

Page 8: ...TY GC31 004A 7 24 Rev B 3 Brachket Panel adaptor Option L shaped bracket Key shaped bracket Panel adaptor For horizontal mounting only...

Page 9: ...t so that no excessive force is applied to main body resin Mounting torque shall be 8N m or lower Also make sure to wrap it with seal tape so that there will be no leakage For mounting of M5 screw per...

Page 10: ...n below Insert the adaptor 1 from the obverse side of the panel cutout and insert the main body form the reverse side of panel cutout Then fix the snaps of adaptor 1 onto the main body Insert the adap...

Page 11: ...ast 5 minutes before performing the zero point adjustment or measurement Brown Power Blue Power COM Orange Analog output Black Open collector output OUT 1 White Open collector output OUT2 Internal sys...

Page 12: ...TY GC31 004A 11 24 Rev B b Example of NPN open collector usage 1 Wiring to relay c Example of NPN open collector usage 2 Wiring to photo coupler d Example of NPN open collector usage 3 Voltage output...

Page 13: ...TY GC31 004A 12 24 Rev B e Example of PNP open collector usage 1 Wiring to relay f Example of PNP open collector usage 2 Wiring to photo coupler g Example of PNP open collector usage 3 Voltage output...

Page 14: ...values often fluctuate or differ they may be affected by noise In this case take noise prevention measures described above 7 Storage location Do not store this device in the following places as it ma...

Page 15: ...function Pressing the MODE key for 3 seconds displays To return to measurement mode from each setting mode hold down the key for 3 seconds or more then will flash Names on Panel and functions Do not u...

Page 16: ...ator operation pressure unit indication scaling scaling of analog output and filter time constant Edit of the setting value in function setting mode recalculates all of the setting values including th...

Page 17: ...splay value for the min max pressure value It has no effect on the relation between the applied pressure and analog output Use the key to set Decimal point position Minimum pressure range display valu...

Page 18: ...key to display setting of Analog output zero point Analog output span point 1 After is displayed for 1 second the current pressure value setting for analog output zero point 1V of analog output scali...

Page 19: ...r the settings of comparator operation point A and comparator operation point B can also be performed for output 1 2 independently However for the dead band in Window comparator 1 F S is fixed automat...

Page 20: ...TY GC31 004A 19 24 Rev B...

Page 21: ...r operation is OFF Note In each setting mode comparator output setting values are always checked and recalculated when a setting related to comparator operation is changed so that there will be no inc...

Page 22: ...the lower limit This is the mode in which the comparator operates with the setting value A as the lower limit The lower limit setting is determined when you select a negative number for setting value...

Page 23: ...d minimum pressure level applied to the pressure port as peak and bottom values respectively in the internal memory The peak and bottom values are displayed as long as or keys are held down When you p...

Page 24: ...ed pressure within the rated pressure Out of pressure display range Lower limit A pressure less than 10 F S of pressure range is applied or when indicated value falls below 1999 During zero point adju...

Page 25: ...essure display mode in Display selection Is Analog scaling set Follow the instructions of Function setting mode and check the set value in Analog scaling Is the setting value of comparator output corr...

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