ELECTRO-PNEUMATIC CONVERTER
DATA SHEET
ZLC
The electro-pneumatic converter installed in site converts a 4
to 20mA DC operation signals from an electronic controller
into proportional 19.6 to 98.1 kPa {0.2 to 1.0kgf /cm2} pneumatic signals for transmitting to pneumatic positioner, or operating pneumatic final control elements such as diaphragm
valves, etc.
FEATURES
1. High conversion accuracy
The guaranteed conversion accuracy is within 0.75%.
2. Various types
Flame-proof type, intrinsically safe explosion-proof type,
split range type, etc. are available.
3. A low input resistance of 200Ω permits two converters to
simultaneously operate.
SPECIFICATIONS
4 to 20mA DC, 4 to 12mA DC or 12 to
20mA DC
Input resistance : Approx. 200Ω (at 20˚C)
Accuracy rating : ± 0.75% of full range
Hysteresis :
0.5% of full range
Response time : Approx. 0.7 sec
(90% time of full range when the load capacity ia 0.5R)
Air supply pressure and output signal :
Input signal :
Air supply pressure
[kPa] {kgf/cm2}
140 {1.43}
240 {2.45}
Output signal
[kPa] {kgf/cm2}
19.6 to 98.1 {0.2 to 1.0}
39.2 to 196.1 {0.4 to 2.0}
Output signal pressure gauge :
As specified by the customer JIS class 3
with the graduation angle of 270˚
Input/output operations :
As specified by the customer
Normal action;
The output signal level increases as
the input signal level increases.
Reverse action;
The output signal level decreases as
the input signal level increases.
Nominal air consumption :
12NR/min (at the supply air pressure of
140kPa{1.43kgf/cm2})
20NR/min (at the supply air pressure of
240kPa{2.45kgf/cm2})
Maximum air consumption :
60NR/min (at the supply air pressure of
140kPa{1.43kgf/cm2})
80NR/min (at the supply air pressure of
240kPa{2.45kgf/cm2})
Ambient temperature :
–20 to +80˚C
Intrinsically safe explosion-proof type;
–20 to +60˚C
Flame-proof type;
–20 to +70˚C
Ambient humidity :
Less than 95% RH
External dimensions (H × W × D) :
176 × 176 × 124mm
Mas{weight} :
Approx. 3kg
Air pipe connection :
Rc1/4 or NPT1/4 adapter
EDS12-2m
Date
Mar. 31, 1999
ZLC
Conduit connection :
G1/2
Waterproof structure :
Splash proofing (JIS C 0920)
Explosion-proof structure :
Intrinsically safe explosion-proofing
(JIS i3nG5)
Flame-proofing
(JIS d2G4)
Finish color :
Silver (epoxy resin coating)
Acid and alkali-proofing treatment :
Mounting U-bolts, nuts and washers made
of stainless steel are used upon request
Mounting method :
Connected to pipe 50A (2B) or mounted on
the wall.
FUNDAMENTAL BLOCK DIAGRAM
Signal
current
Force
Torque
motor
Balance Displacement
beam
Nozzle
pilot
valve
Output air
pressure
Feedback
bellows
CODE SYMBOLS
1 2 3 4 5 6 7 8
ZLC
9 10 11
5 -
Description
Input signal
4 to 20mA DC
4 to 12mA DC
12 to 20mA DC
1
2
3
C or F in 5th digit is not available
Output signal: input/output operation:
air supply pressure
19.6 to 98.1 kPa
(normal action) ... 140kPa
{1.43kgf/cm2}
{0.2 to 1.0kgf/cm2}
39.2 to 196.1 kPa (normal action) ... 240kPa
{2.45kgf/cm2}
{0.4 to 2.0kgf/cm2}
98.1 to 19.6 kPa
(reverse action) ... 140kPa
{1.43kgf/cm2}
{1.0 to 0.2kgf/cm2}
196.1 to 39.2 kPa (reverse action) ... 240kPa
{2.45kgf/cm2}
{2.0 to 0.4kgf/cm2}
A
C
D
F
Explosion-proof structure
For general use (Non-explosion-proof)
Intrinsically safe explosion-proof structure
(JIS i3nG5)
Flame-proof structure (JIS d2G4 conduit
pressure-resisting screw-coupled type lead in
system)
Flame-proof structure (JIS d2G4 flame-proof packing
connection type)
Y
A
B
C
Output signal pressure gauge
Non provided
Provided
0
1
Treatment
For general use
Acid and alkaliproof treatment
0
1
Air set
Non provided
Provided
Y
A
Y
A
Air pipe connection
RC 1/4
NPT 1/4 adapter
OUTLINE DIAGRAM (Unit: mm)
124
161
166
180
100
55
47.5
SUP
E
SUP
45
OUT
80
Zero
adjustment
"A"
Mounting
pipe
JIS 2B
Air pipe connections Conduit connection
2- Rc1/4
G1/2
or
NPT1/4 adapter
Output signal
pressure gauge
as specified
<GENERAL USE and INTRINSICALLY SAFE EXPLOSION-PROOF TYPES>
124
174
179
177
100
55
47.5
E
80
SUP
OUT
80
45
Zero
Air pipe connections
*Cable gland
adjustment
2- Rc1/4
or
"B"
"A"
Mounting NPT1/4
Output signal
Conduit connection Conduit connection
adapter
1
pipe
pressure gauge
G /2
G1/2
JIS 2B
as specified
Note: *shows the part used for the flame-proof packing
type which used for 11mm diameter cable.
<FLAME-PROOF TYPE>
Details of "B"
φ15
φ13
Commection diagram
6
Details of "A"
15
G1/2
I-
I+
17
E
G1/2
Input signal
ZLC
Air set
as specified
124
177
100
112
55
179
47.5
E
80
OUT
80
45
Mounting
pipe
JIS 2B
Air pipe
connections
2- Rc1/4
Air supply
Zero
adjustment
"A"
*Cable gland
Conduit
"B"
connection Conduit
connection
G1/2
G1/2
Output signal
pressure gauge
as specified
Note: *shows the part used for the flame-proof packing
type which used for 11mm diameter cable.
<FLAME-PROOF TYPE>
Details of "B"
φ15
φ13
Commection diagram
6
Details of "A"
15
G1/2
I-
I+
17
E
G1/2
Input signal
RELATED DEVICES
Electro-pneumatic positioner
Diaphragm type control valve
Opener (FXZ2 type)
ORDERING INFOMATION
1. Product name
2. Code symbol
3. Other requirements
Caution on Safety
*Before using this product, be sure to read its instruction manual in advance.
Head Office
6-17, Sanbancho, Chiyoda-ku, Tokyo 102-0075, Japan
http://www.fesys.co.jp/eng
Sales Div.
International Sales Dept.
No.1, Fuji-machi, Hino-city, Tokyo, 191-8502 Japan
Phone: 81-42-585-6201, 6202 Fax: 81-42-585-6187
http: //www.fic-net.jp/eng
Information in this catalog is subject to change without notice.
Printed in Japan