ECS series -- Sliding contact provides for accurate switching with almost no hysteresis and very little force required. This type of contacts is very sensitive to vibration. Therefore, it requires vibration-free installation and cannot be used with liquid filled gauges. Used in the areas of explosion risk not suitable.
ECM series -- Magnetic snap-action contact is the universal type and used in practically all service conditions. The magnetically assisted contact features a small magnet attached to the setting hand. The magnet provides for a snap-action characteristic which considerably improves contact rating and service life, and also makes this type less sensitive to vibration and with hysteresis. The value of this hysteres is from 2% to 5% depending on scale range and instrument. This type of contacts can be used with liquid filled instruments. Used in the areas of explosion risk not suitable.
| Instruments |
Pressure gauges with dial Ø2.5" (bottom connection type only),
Ø4" and 6" (SUS series is the commonest types)
Stainless steel differential pressure gauges
Thermometers with dial Ø3" ~ 6" (visual type contact only) |
Position of
contact block |
Visual type － the contact block is mounted onto the dial
Hiding type － the contact block is mounted behind the dial
( Hiding type only available for SUS series pressure gauges Ø4" & 6" ) |
Number of contacts |
Single contact－normally open；normally closed
Double contacts－normally open and closed；normally open x 2；
normally closed x 2 |
Lens |
Acrylic lens for visual type
Safety glass lens for hiding type, with adjustment knob |
Wiring styles |
by Junction box
by means of a flying lead cable
by terminals (only available for thermometers) |
Material of
contact points |
Silver-nickel alloy standard
Platinum-iridium alloy available by special customization |
Filling (option) |
Insulation oil (only available for SUS series pressure gauges) |
Max. voltage |
AC 250 V & DC 220 V standard, AC 380 V available |
Max. load |
Sliding contact － 10W or 18VA
Magnetic snap-action contact － 30W or 50VA (dry gauge)
20W or 20VA (liquid filled gauge) |
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The pressure gauge with explosion-proof inductive is inductive approach form, because of non-contact-type, it has no any spoilage to the power supply system. Without electric spark, long using life, little impact on the measurement accuracy, it is not only applicable to certain dangerous places, but also suitable for frequent turn on/off occasions.
ECI series explosion-proof inductive pressure gauge is based on GB3836.1 (the request of the electric equipment used in explosive gas environment) and GB3836.4 (safe explosive gas environment electrical equipment intrinsically safety-type “1").
| Instruments |
SUS series pressure gauges of dial Ø4" & 6" |
Position of
contact block |
Hiding type － the contact block is mounted behind the dial |
Number of contacts |
Single contact－normally open；normally closed
Double contacts－normally open and closed；normally open x 2；
normally closed x 2 |
Protection class |
Standard type － IP54
Airtight type or Liquid filled type － IP65 |
Explosion-proof class |
Exib II CT6 |
Lens |
Safety glass |
Wiring styles |
by Junction box |
Filling (option) |
Insulation oil |
Electrical Parameter |
Pressure gauge fixed: 8 VDC, Safe voltage ＜16 VDC
Working current: opening ≧3mA, Closed ≦1mA, Safe current ＜52 mA
On/off frequency ＜5000 Hz |
Measuring
Pressure range |
0/1 to 600 kg/cm2 ( bar)；0/40 to 1000 mbar
positive, negative or compound range available |
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