background image

 

 

IM100CZ04-E4

 

7. LINEARIZING FUNCTION 

SETTING 

 
 
 
 
 
 
 
 
 
 

 

Linearizing switch changing 

1. 

First check the output characteristic type (A, N or B) engraved at 
the end of the figure showing the rated output value on the rating 
nameplate attached to the outer chamber of the pressure 
sensor. 

 

 Example: 

Rating 

nameplate 

 

PRESSURE SENSOR 

TYPE 

CZ-100P-HB-SNE 

RKC INSTRUMENT INC.  MADE IN JAPAN 

PRESSURE RANGE 

0 - 20 

MPa 

RATED OUTPUT 

1.234A 

mV/V at 150

No. 

97J21020 

DATE 

9 710 

 

 

 

2. 

Next, check that the power to the PCT-300 output converter is 
turned off, then remove the internal assembly from the case. 

 

3. 

Set the linearizing switch on the side of the internal assembly of 
the PCT-300 to the position matching the output characteristic 
type of the pressure sensor to be connected. 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

The gain selector switch or linearizing switch is optional.   
The above figure shows all the optional switches to simplify 
the explanation. 

 

 

4. 

House the internal assembly in the case. 
This completes the setting. 

 

8. TROUBLES AND CAUSE 

 

Problem Possible 

cause 

Indication pointer 
completely defects to the 
left or right. 

 

 No indicator input circuit connected. 

 No 4-conductor shielded cable connected. 

 The defective connector used (standard or 

water resistant connector). 

 Wires disconnected or shorted. 

 No internal sensor wiring connected. 

 The fiberglass coated cable immersed into 

water or exposed to high temperature, resulting 
in deteriorated insulation resistance. 

 No rated output set to the PCT-300   

(different gain). 

 The double gain selector switch turned ON. 

 The strain gauge deteriorated due to exposure 

to high temperature. 

 No zero adjuster adjusted. 

Digital display over-scale 
or underscale. 

No pressure is indicated 
under pressurized 
condition. 

 Irregularly tapped hole for installing the 

CZ-100P. (The sensor tip strongly contacting 
with the tapped hole.) 

 The diaphragm deteriorated, deformed or 

damaged.

 

 Mechanical Lead pipe deformation by external 

force. 

Pointer or indication 
fluctuates during relay 
actuation. 

 No measures for relay spark killing taken. 

 No 4-conductor cable shield perfectly wired or 

grounded. 

 The PCT-300 located near magnetically 

operated relays. 

Pressure indication is 
fluctuated. 

 Value different from the sensor rated output set 

to the rated output setter for the PCT-300. 

 The diaphragm deteriorated, deformed or 

damaged.

 

 The sensor exposed to hot or cold wind. 

 Some potential against the earth generated 

(2-point grounding, etc.). 

Normal operation was 
performed, but no 
reading was received 
after a while or the 
reading varied and was 
unstable.

 

 Imperfect  connecter  contact. 

 The lead pipe deformed by external force. 

 The diaphragm deteriorated, deformed or   

damaged.

 

*

 

 The fiberglass coated cable immersed into 

water or exposed to high temperature, resulting 
in deteriorated insulation resistance. 

 The sensor exposed to hot or cold wind. 

 The extruder now in unstable operation or 

temperature rise. 

Indication fluctuates from 
the beginning. 

 The sensor tip forcibly tightened due to the 

small tapped hole. 

 The lead pipe cover contacting with the barrel, 

etc. 

Resin leakage.

 

 The sealed surface deformed or scratched. 

 Foreign material (carbide, etc.) attached on the 

sealed surface. 

 Low sealed surface accuracy (parallelism, axis, 

etc.). 

 No screw threaded down to the extreme end. 

 Tightened at less than appropriate torque or not 

tightened. 

No threads regularly 
engaged (no screw 
removed).

 

 No screw threaded down to the extreme end. 

 Not threaded as conforming to the standard. 

 The screw with burrs used. 

 Tightened with excessive torque. 

 Tightened at temperature different from the 

initial tightening temperature. 

 Foreign material attached on the threaded 

section, or stained. 

 

For taking measures, also refer to “

3.1 PRESSURE SENSOR 

(CZ-100P)

.” The converter is described on a basis of the PCT-300. 

 

For the cause of diaphragm deterioration, deformation or 
damage, refer to the following “

* Main causes

.” 

 
 
 
 
 

Continued on the next page. 

   

   

 

To prevent electric shock and instrument failure, 
always turn off the power supply before pulling out the 
internal chassis. 

 To prevent injury or instrument failure, do not touch the 

internal printed circuit board. 

!

 

WARNING 

Linearizing switch: 

Set the switch to the position matching
the output characteristic type of the
pressure sensor. 

Internal assembly of PCT-300 

Upper 

Lower 

Front 

Gain selector switch 

 

2 ON 

 OFF

FILTER switch 

A, N or B is engraved in this section.

 

For products other than corresponding to the linearizing 
function, the output characteristic type (A, N or B) is not 
engraved in this section.

 

Summary of Contents for CZ-100P

Page 1: ...wer is turned on again To prevent instrument damage as a result of failure protect the power line and the input output lines from high currents with a suitable overcurrent protection device with adequ...

Page 2: ...Diaphragm section material S SUS630 Standard H HASTELLOY C Optional 3 Diaphragm surface treatment N Standard K CERAMIC Kanigin plate Optional 4 Intrinsically safe N Standard For non explosionproof spe...

Page 3: ...he slanting direction Fig 1 B to the horizontal direction Fig 1 C in this order In this case take measures of 1 and 2 if necessary by checking the sensor outer cylinder surface temperature To the rele...

Page 4: ...llow loose fitting Z 1024 or Z 1024A type 0 to 1 MPa Z 1024 or Z 1024A type 24 0 0 2 3 1 5 Pressure sensor installation 1 Make sure the mounting hole is correctly machined If installing the pressure s...

Page 5: ...maximum available current of 8 A Use the solderless terminal appropriate to the screw size Screw size M3 6 Recommended tightening torque 0 4 N m 4 kgf cm Specified solderless terminals With isolation...

Page 6: ...de of PCT 300 refer to drawing on page 6 to 2 Gain setting for CZ 100P LLA Z 1024A type Set the RATED OUTPUT Rated output mV V value specified on the label of the pressure sensor at Gain setting in th...

Page 7: ...wing correction equation and correction factor e1 e0 1 0 5 S K L 5 e0 Rated output of the resin pressure sensor e1 Rated output after the correction S Conductor nominal cross sectional area mm2 K Corr...

Page 8: ...on is fluctuated Value different from the sensor rated output set to the rated output setter for the PCT 300 The diaphragm deteriorated deformed or damaged The sensor exposed to hot or cold wind Some...

Page 9: ...aphragm deformed or damaged as the push rod pushes the diaphragm from the inside as a result of the deformation of the sensor flange by excessive tightening torque 9 EXPLANATION OF EACH TERMS Term Exp...

Page 10: ...0 5 As the input side of bridge resistance the 350 5 type is also available This type is interchangeable with the 374 10 type Temperature characteristics Maximum diaphragm temperature 400 C Maximum st...

Page 11: ...Linearity Within 0 01 of span Noise Within 0 1 p p of span 0 1 to 10 Hz Response 10 Hz 100 Hz transfer type Factory shipment 10 Hz Power supply 90 to 264 V AC Including power supply voltage variation...

Page 12: ...1995 The fourth edition OCT 2013 IMQ00 HEADQUARTERS 16 6 KUGAHARA 5 CHOME OHTA KU TOKYO 146 8515 JAPAN PHONE 03 3751 9799 81 3 3751 9799 E mail info rkcinst co jp FAX 03 3751 8585 81 3 3751 8585 RKC...

Reviews: