IM100CZ04-E4
2
1. OUTLINE
1.1 Principle of Operation
When pressure is applied to a diaphragm in the resin pressure
sensor (CZ-100P), force acts upon a pressure sensing element
through a metal rod located near the diaphragm.
The pressure sensing element
used in CZ-100P has 4 gauges
adhered to a metallic elastic
body and connected to
Wheatstone bridge. Each strain
gauge made of metal
resistance foil with small
temperature coefficient slightly
changes its gauge resistance
due to strain occurring by the
application of force to the
elastic body. In this case, as shown in the attached diagram (Fig. 1),
the elastic body is in such construction that by the application of
force stretching strain occurs in R1 and R3, while shrinking strain in
R2 and R4 to increase the gauge resistances of R1 and R3 and to
decrease those of R2 and R4. These resistance changes are
detected as bridge voltage change to generate the output
proportional to the force applied. The output thus generated is input
to the PCT-300 output converter which can finally output the DC
voltages of 0 to 10 V, 0 to 10 mV, 1 to 5 V and 4 to 20 mA from its
output terminals via a 3-stage amplifier circuit.
1.2 Features
The detection of strain caused by the deformation of an elastic
metal body within its elasticity limit using the highly reliable strain
gauge enables highly accurate pressure measurement.
The dual construction of connecting pipe and pressure sensing
element portions extremely lessens output indication change
caused by external transient temperature change.
Calibration normally performed to a strain gauge sensor becomes
easy and accurate without monitoring the output due to the
employment of the PCT-300 output converter.
PCT-300
CZ-100P
Pressure sensor
0 to 10 V
0 to 10 mV
1 to 5 V
4 to 20 mA
Indicator
Recorder
Pressure
controller
4-core shielded cable
Output converter
Fig. 2 Block diagram of resin pressure system
2. PRODUCT CHECK
Before using this product, check each of the following:
Model code
Check that all of the items delivered are complete.
Check that there are no scratch or breakage in external
appearance.
Resin pressure sensor
CZ-100P-
□
-
□
□
□
(1) (2) (3) (4)
(1) Specification type
HB: Fixed nut type Standard
PF3/8
L
150
HC: Fixed nut type Standard
PF3/8
L
180
HZ: Fixed nut type Nonstandard size PF3/8
HL: Loose nut type Standard
PF3/4 (20 to 100 MPa)
HLZ: Loose nut type Nonstandard size PF3/4 (20 to 100 MPa)
LL: Loose nut type Standard
PF3/4 (5 to 10 MPa)
LLZ: Loose nut type Nonstandard size PF3/4 (5 to 10 MPa)
LLA: Loose nut type Standard
PF3/4 (0.5 to 1 MPa)
(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 specification type)
G: Explosionproof specification type (For indoor use)
H: Explosionproof
specification type (For outdoor use)
Accessories
Instruction Manual [IM100CZ04-E4]
Copper Gasket
(Included in only the Loose nut type [thickness: t = 2 mm])
If any of the products are missing, damaged, or if your
manual is incomplete, please contact RKC sales office or the
agent.
Blind bolt (Sold separately)
This is a bolt to be used to fill the hole on the machine from which
a pressure sensor has been removed. If a blind bolt is necessary,
please contact with our sales staff or the nearest distributor.
Output converter
PCT-300
□
-
□
□
(1)
(2)
(3)
(1) Intrinsically safe
N: Standard
type
(Non-explosionproof construction)
E: Intrinsically safe explosionproof construction pass type
(2) Number of outputs
2: For two output points (0 to 10 V DC, 0 to 10 mV DC)
3: For three output points
(0 to 10 V DC, 0 to 10 mV DC, 1 to 5 V DC)
4: For four output points
(0 to 10 V DC, 0 to 10 mV DC, 1 to 5 V DC, 4 to 20 mA DC)
(3) Optional function
N: None
G: With gain selector switch
L: With linearizing function
(Linearity error for using this product with the CZ-100P
becomes
within
0.5 % of span)
Sensor connection cable (Sold separately)
W-AB-N
*-PA-5000: Standard (For non
intrinsic safety)
[Cable length: 5 m]
W-AB-Y
*-PB-5000: Intrinsically safety (Hazardous side)
[Cable length: 5 m]
W-AB-N
*-BA-1000: Non-intrinsic
safety (Non-hazardous side)
[Cable length: 1 m]
*
: Cable cover type
(G: Heat-resistant glass coated cable, V: Vinyl coated cable, S: Silicon coated cable)
3. MOUNTING
3.1 Pressure Sensors (CZ-100P)
3.1.1 Mounting cautions
Mounting environment
Ensure that no cooling pipes directly contact the pressure sensor
or connector, since the pressure reading accuracy may be affected
or the connector may be damaged.
Do not locate any heat source near the pressure sensor or directly
expose it to heat. Otherwise, high-temperature deterioration of the
sensor block may occur. If the temperature could rise in the strain
gauge block located within the housing, cover possible heat
sources with insulation materials.
Do not use the pressure sensor under any of the following
environmental conditions:
- Where the sensor is exposed directly to cold air, warm air or hot air.
- Where temperature variations are large.
- Where the sensor is exposed to direct sunlight.
- Where the sensor is directly splashed with water or rain, or the
humidity is high.
Do not bring magnetic devices such as magnetic relays, etc. near
the pressure indicator. Also, keep power lines from the resin
pressure sensor cable.
Applied voltage
R4
Fig. 1
R3
R1
R2
Signal (output)
voltage
