Nagano Keiki GC31, Instruction Manual

TY-GC31-004A 

22/24 

Rev.B 

13. Other functions 



 Basic key  operations 

In all setting modes, values are set with the 

▲ ▼

 keys. Use 

▲

  key to increase and 

▼

 key 

to decrease the value. A repeat state occurs in three phases of speed when the 

▲ ▼

 keys 

are pressed for more than 0.5 seconds to increase or decrease numerical value. 

▲ ▼

 keys 

are also used for setting comparator, unit and filter in the function setting mode. 
 



 Zero point adjustment mode 

In measurement mode, press the             

＋

▼

  keys for more than 3 seconds (until “---” display 

blinks) after releasing pressure from the pressure port. Approximately 1 second later an 
automatic zero adjustment takes place and the pressure is displayed as zero. When the zero 

adjustment is successful, 

  is displayed. The error 

  is displayed for one second 

when applied pressure is outside the range of -10

～

10% F.S.. At this time, zero adjustment 

does not happen. 
 



 Peak hold display mode 

This device keeps the maximum and 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 perform this operation, the 

message 

  is displayed for one second and the peak value which is corresponded to 

each operation is displayed.   
 
Peak and bottom values are reset when power is restored, or by the following procedure: 
 
Resetting peak value: While holding the 

▲

  key, press the 

▼

 key . 

Resetting bottom value: While holding the 

▼

  key, press the 

▲

 key . 



 Key  lock 

Key operations can be nullified to prevent inadvertent overwriting of setting values. Once the 
key lock state is set, the mode cannot be shifted to the one other than the peak hold display 
mode. The key lock mode cannot be reset by restoring power. It is reset by the following 
unlocking procedure. 

 Press the       + 

▲

  keys in the measurement mode. The message 

 is displayed 

for one second, indicating that the unit has entered into the key lock state. To reset, press the 

                  +    keys again. The message 

  is displayed for one second indicating that 

the unit is unlocked. 

MODE

MODE

MODE