Pressure Sensor
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Pressure SensorIntrinsic Safety Explosion-proof Barrier Zener-barrier(for Transducer)

Zener-barrierseries MTL761ac / MTL764ac

Zener-barrier

Explosion-proof rate: ia2G3

Applicable Sensor VPRF, VPRQ(F), VPRNP
Measured medium Media that will not corrode SUS630 and 15-5PH (precipitation-hardened stainless steel), SUS316L (Refer to the individual specifications.)
Pressure range VPRNP: 100~1700kPa or 100~1700kPa abs / VPRQ, VPRF: 1~50MPa / VPRQF: 1~100MPa (Refer to the individual specifications.)

Specification

Explosion-proof Rating ia2G3
Installation Class A (1) grounding
Operation Voltage ±2.5V or 5V
Ambient Temperature Applicable Sensor VPRF・VPRQ・VPRQF: -20~60°C
VPRNP: -20~50°C
Zener-barrier -20~60°C
Rating of Intrinsically Safe Circuit Maximum voltage 24V / Maximum current 224mA / Maximum power 0.522W
Allowable Inductance for External Lines 1mH or less
Allowable Capacitance for External Lines 0.1µF or less
Measurement Medium Media that will not corrode SUS630 and 15-5PH (precipitation-hardened stainless steel), SUS316L (Refer to the individual specifications.)

Individual specifications

System model (Certification) SA-010-00 SA-010-00
TIIS Certification Number T68568 T68670
Zener-barrier form MTL761ac / MTL764ac MTL761ac / MTL764ac
Applicable sensor series VPRF VPRQ VPRQF VPRNP
Rated Capacity 1~50MPa 1~50MPa 1~100MPa 100~1700kPa
100~1700kPa(abs)
Accuracy
(Applicable Sensor element)
Non Linearity / Hysteresis
±0.5%R.C. ±0.8%R.C. ±0.8%R.C.
(100MPa: ±1%R.C.)
±0.25%R.C.
Connection Screw G3/8 R3/8 G3/8
(100MPa: G1/2)
R3/8, G3/8
Material SUS630 or 15-5PH (precipitation-hardened stainless steel)) SUS316L
Accessories Aluminum packing(×1)
(50MPa: Copper packing × 1)
- (Copper packing × 1) -

Zener-barrier model

MTL761ac / MTL764ac (Accessories: Bus bar IS-BB-2P · Clip for a flat mounting SMC7(Set of 4))

Model Selection

Model Selection
Photo ①Model ②Rated Capacity(R.C.) ③Cable Connection ④Connection Screw ⑤Length(Cable) Link
VPRF 1MP(1MPa)
2MP(2MPa)
5MP(5MPa)
10MP(10MPa)
20MP(20MPa)
50MP(50MPa)
Blank
(Standard connector)
W
(Waterproof connector)
G3/8 3m(Standard)
5m
10m
□□m

Other length
(*3)
VPRF
VPRQ 1MP(1MPa)
2MP(2MPa)
5MP(5MPa)
10MP(10MPa)
20MP(20MPa)
35MP(35MPa)
50MP(50MPa)
R3/8 VPRQ,
VPRQF
VPRQF 1MP(1MPa)
2MP(2MPa)
5MP(5MPa)
10MP(10MPa)
20MP(20MPa)
35MP(35MPa)
50MP(50MPa)
100MP(100MPa)
G3/8
(100MPa: G1/2)
VPRNP Guage Pressure 100(100kPa)
200(200kPa)
700(700kPa)
1700(1700kPa)
R3/8
G3/8
VPRNP
Absolute Pressure 100A(100kPa abs)
200A(200kPa abs)
700A(700kPa abs)
1700A(1700kPa abs)
  • Cable lengthNote *1 Always use in combination with VALCOM amplifier.
    Models are subject to change in part due intrinsic safety or explosion-proof purpose. Always contact our sales office for confirmation.
    *2 Please order the cable length between VALCOM amplifier and Zener-barrier.
    *3 Between Conformity sensor and Zener-barrier use dedicated to cable for safe explosion-proof. (Max 200m / VPRNP guage pressure · W(Waterproof connector) : Max 100m)

Examples of explosion-proof construction

①Ignition temperature
Ignition temperature Ignition point Limit of temperature rise (°C)
G1 Over 450°C 320
G2 Over 300°C up to 450°C 200
G3 Over 200°C up to 300°C 120
G4 Over 135°C up to 200°C 70
G5 Over 100°C up to 135°C 40
G6 Over 85°C up to 100°C 30
Examples of explosion-proof construction ②: Flame-proof grade explosion class
(Minimum gap width to allow transmission of flame)
  1 : Over 0.6 mm
  2 : Over 0.4 mm up to 0.6 mm
  3 : 0.4 mm or less; "n" covers all gases of grade 3 or below.
③: Explosion-proof construction
  i : Meets the requirements of intrinsically safe explosion-proof construction.
  d : Meets the requirements of flameproof enclosure.
Ignition degree G1 G2 G3 G4 G5 G6
1 (Over 0.6 mm) Over 450°C Over 300°C up to 450°C Over 200°C up to 300°C Over 135°C up to 200°C Over 100°C up to 135°C Over 85°C up to 100°C
1 (Over 0.6 mm) Acrylonitrile
Acetonitrile
Acetone
Ammonia
Carbon monoxide
Isobutyl methyl ketone
1,1-Dichloroethene
1,2,4-Trimethylbenzene
Ethane
Ethyl methyl ketone
m-Xylene
Isopropyl chloride
O-Xylene
Chlorobenzene
Acetic acid
Ethyl acetate
Methyl acetate
Hydrogen cyanide
Ethyl bromide
Styrene
Toluene
P-Xylene
Propane
Benzene
Benzotrifluoride
Methanol
Methane
Ethyl acrylate
Eethyl acrylate
Acetylacetone
Trioctanoic
Isobutanol
Isopentane
1,2-Dichloroethane
1-Butanol
1,4-Dioxane
Ethanol
Epichlorohydrin
Polyvinyl chloride
Isoamyl acetate
Isopentyl acetate
Vinyl acetate
Butyl acetate
Propyl acetate
Pentyl acetate
Diisopropyl ether
Cyclohexanone
Thiophene
2-Propanol
Butane
Furan
Propylene
Acetic anhydride
Methyl methacrylate
1-Hexanol
1-Pentanol
Butyl chloride
Octane
Gasoline
3-Methylhexanoic acid
Cyclohexane
Dimethyl ether
Decane
Tetrahydrofuran
2-Methylhexane
Butyraldehyde
Hexane
Heptane
Pentane
Acetaldehyde
(di)ethyl ether
Dibutyl ether


Risk
  Ethyl nitrite
2 (Over 0.4 mm up to 0.6 mm) Coal gas
(trans-)1.2-Dichloroethene
1,3-Butadiene
Ethylene
Ethylene oxide
Propylene oxide
       
3 (Up to 0.4 mm) Water gas, Hydrogen(a) Acetylene(c)     Carbon bisulfide(b) Nitric acid
Ethyl

Learn more about external dimensions.


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