Diaphragm pressure gauge with switch contacts
Description
Wherever the process pressure has to be indicated locally and, at the same time, circuits need to be switched, the model 432.56 or 432.36 switchGAUGE finds its use. Switch contacts (electrical alarm contacts) make or break circuits dependent upon the pointer position of the indicating measuring instruments. The switch contacts are adjustable over the full extent of the scale range (see DIN 16085), and are mounted predominantly below the dial, though also partly on top of the dial. The instrument pointer (actual value pointer) moves freely across the entire scale range, independent of the setting.
The set pointer can be adjusted using a removable adjustment key in the window.
Special features
- High overload safety, optionally up to 40, 100 or 400 bar, due to the metallic pressure element limit stop, without liquid-filled measuring cell
- Wide choice of special materials
- Also available with liquid-filled case for high dynamic pressure loads or vibrations
- Instruments with inductive contacts for use in hazardous areas
- Instruments with switch contact for PLC applications
| Model | 432.56 |
| Product family | 432 |
| Subcategory | Diaphragm pressure gauge with switch contacts |
| Pressure ranges | 0…25 mbar · 0…400 mbar · 0…40 bar · 0…250 mbar |
| Accuracy class | 1.6 |
| Accuracy standard | EN 837-3 |
| Process connection | Open connecting flange 1" class 300, RF per ASME B16.5Open connecting flange 2" class 300, RF per ASME B16.5Open connecting flange DN 25 PN 40 per EN 1092-1, form BOpen connecting flange DN 50 PN 40 per EN 1092-1, form BG ½ B½ NPT½ NPT femaleG1/2B1/2NPT1/2NPT female |
| Process temperature | +10…+200 °C |
| Power supply | DC 10 ... 30 V |
| Electrical connection | Cable socket PA 6, black Per VDE 0110 insulation group C/250 V, cable gland M20 x 1.5, strain relief 6 screw terminals + PE for conductor cross-section 2.5 mm² |
| Switching function | Normally open (clockwise pointer motion), Normally closed (clockwise pointer motion), Change-over |
| Switching contacts | 4 |
| Case material | Stainless steel |
| Wetted parts material | Stainless steel 316L, NiCr alloy (Inconel), PTFE, Hastelloy, Monel, nickel, tantalum, titanium, silver |
| Sealing material | FPM/FKM |
| Ambient temperature | −20…+60 °C |
| IP rating | IP54 |
| Certifications | CEEACGOSTKazInMetrMTSCHSBelGIMUkrSEPROUzstandardKCsCPACRNRoHSREACHNACEEMC directivePressure equipment directiveLow voltage directive |
| Explosion protection | [II 2G Ex ia IIC T6/T5/T4 Gb][II 2D Ex ia IIIB T135°C Db][II 2G Ex ia IIB T6/T5/T4 Gb][Ex ia IIC T6/T5/T4 Gb][Ex ia IIIB T135°C Db][Ex ia IIB T6/T5/T4 Gb]Ex ia Gas [II 2G Ex ia IIC T6/T5/T4 Gb]Dust [II 2D Ex ia IIIB T135℃ Db]Ex ia Gas [II 2G Ex ia IIB T6/T5/T4 Gb]Ex ia Gas [Ex ia IIC T6/T5/T4 Gb]Dust [Ex ia IIIB T135℃ Db]Ex ia Gas [Ex ia IIB T6/T5/T4 Gb] |
| Dial size | 100 mm |
| Datasheet languages | EN, DE, ES, FR |
| Nominal size inmm | ■ 100 ■ 160 |
|---|---|
| Accuracy class | 1.6 1) Option: 1.0 2) |
| Scale ranges 3) | 0 ... 25 mbar to 0 ... 250 mbar (flange Ø160 mm) 0 ... 400 mbar to 0 ... 40 bar (flange Ø100 mm) other units (e.g. psi, kPa) available or all other equivalent vacuum or combined pressure and vacuum ranges |
| Scale | Single scale Option: Dual scale |
| Pressure limitation | |
| Steady | Full scale value |
| Fluctuating | 0.9 x full scale value |
| Overload safety ³⁾ | ■ 40 bar ■ 100 bar ■ 400 bar (only for scale ranges ≥ 0 ... 400 mbar 4) ) Option: Vacuum safety to -1 bar |
| Process connection with lower measuring flange | ■ G½B ■ ½NPT ■ ½NPTfemale ■ Open connecting flange DN 25 PN 40 per EN 1092-1, form B ■ Open connecting flange DN 50 PN 40 per EN 1092-1, form B ■ Open connecting flange 1" class 300, RF per ASME B16.5 ■ Open connecting flange 2" class 300, RF per ASME B16.5 and other threaded connections and open connecting flanges per EN/ASME from DN 15 to DN 80 (see data sheet IN 00.10) |
| Permissible temperature 5) | |
| Medium | +100 °C [+212 °F] maximum Option: +200 °C [+392 °F] maximum |
| Ambient | -20 ...+60 °C [-4 ...+140 °F] |
| Temperature effect | When the temperature of the measuring system deviates from the reference temperature (+20 °C): max. ±0.8 %/10 K of full scale value |
| Case | ■ Model 432.56:Version S1 per EN 837:With blow-out device in case back ■ Model 432.36: Safety version S3 per EN 837:With solid baffle wall (Solidfront) and blow-out back Instruments with liquid filling with compensating valve to vent case |
| Case filling | Without Option: With silicone oil M50 case filling, ingress protection IP65 (models 433.56, 433.36) |
| Wetted materials | |
|---|---|
| Diaphragm element (pressure element) | ≤ 0.25 bar: Stainless steel 316L > 0.25 bar: NiCr alloy (Inconel) Option: Coated with special materials such as PTFE, Hastelloy, Monel, nickel, tantalum, titanium, silver (instruments with accuracy class 2.5) |
| Process connection with lower measuring flange | Stainless steel 316L Option: Lined/coated with special materials such as PTFE, Hastelloy, Monel, nickel, tantalum, titanium, silver |
| Pressure chamber sealing | FPM/FKM |
| Non-wetted materials | |
| Case with upper measuring flange and flange connecting screws, movement, bayonet ring | Stainless steel |
| Dial | Aluminium, white, black lettering |
| Instrument pointer | Aluminium, black |
| Set pointer | Aluminium, red |
| Window | Laminated safety glass |
| Ingress protection per IEC/EN 60529 | IP54 Option: IP65 |
| Electrical connection | Cable socket PA 6, black PerVDE 0110 insulation group C/250V Cable gland M20 x 1.5 Strain relief 6 screw terminals + PE for conductor cross-section 2.5 mm² For dimensions see page 10 others on request |
| Measuring span 1) | Max. number of con- tacts | Switching current range I | Switch version ²⁾ |
|---|---|---|---|
| ≥ 25 mbar | 2 | 0.02 ... 0.3 A | L |
| ≥ 40 mbar | 4 | 0.02 ... 0.3 A | L |
| Characteristics | Unfilled instruments Resistive load | Filled instruments |
|---|---|---|
| Rated operating voltage U eff | ≤ 250V | ≤ 250V |
| Rated operating current | ||
| Switch-on current | ≤ 0.5 A | ≤ 0.5 A |
| Switch-off current | ≤ 0.5 A | ≤ 0.5 A |
| Continuous current | ≤ 0.3 A | ≤ 0.3 A |
| Switching power | ≤ 30W/ ≤ 50VA | ≤ 20W/ ≤ 20VA |
View all (20)
| Operating voltage | Unfilled instruments | Filled instruments | ||||
|---|---|---|---|---|---|---|
| Resistive load | Inductive load | Resistive load | Inductive load | |||
| Direct current | Alter- nating current | cos ϕ>0.7 | Direct current | Alter- nating current | cos ϕ>0.7 | |
| DC 220 V / AC 230 V | 100mA | 120mA | 65mA | 65mA | 90mA | 40mA |
| DC 110 V / AC 110 V | 200mA | 240mA | 130mA | 130mA | 180mA | 85mA |
| DC 48 V / AC 48 V | 300mA | 450mA | 200mA | 190mA | 330mA | 130mA |
| DC 24 V / AC 24 V | 400mA | 600mA | 250mA | 250mA | 450mA | 150mA |
| Measuring span 1) | Max. number of contacts |
|---|---|
| ≥ 25 mbar | 3 |
| Model | Version | Ex version |
|---|---|---|
| 904.28 KFA6 - SR2 - Ex1.W | 1 contact | yes |
| 904.29 KFA6 - SR2 - Ex2.W | 2 contacts | yes |
| 904.30 KHA6 - SH - Ex1 | 1 contact | yes - safety equipment |
| 904.33 KFD2 - SH - Ex1 | 1 contact | yes - safety equipment |
| 904.25 MSR 010-I | 1 contact | no |
| 904.26 MSR 020-I | 2 contacts | no |
| 904.27 MSR 011-I | Two-point control | no |
| Measuring span | Max. number of contacts |
|---|---|
| ≥ 25 mbar | 3 |
| Contact version | Normally open, normally closed |
|---|---|
| Type of output | PNP transistor |
| Operating voltage | DC 10 ...30V |
| Residual ripple | max.10% |
| No-load current | ≤ 10mA |
| Switching current | ≤ 100mA |
| Residual current | ≤ 100 µA |
| Voltage drop (with I max. ) | ≤ 0.7V |
| Reverse polarity protection | Conditional U B (the switched output 3 or 4 must never be set directly to minus) |
| Anti-inductive protection | 1 kV, 0.1 ms, 1 kΩ |
| Oscillator frequency | approx. 1,000 kHz |
| EMC | per EN 60947-5-2 |
| Measuring span 1) | Case version | Max. number of contacts |
|---|---|---|
| ≥ 25 mbar | S1, S3 2) | 2 |
| Characteristics | |
|---|---|
| Contact version | Change-over contact |
| Type of contact | Bistable |
| Max. switching voltage | AC/DC 250V |
| Min. switching voltage | Not required |
| Switching current | AC/DC 1 A |
| Min. switching current | Not required |
| Transport current | AC/DC 2 A |
| cosϕ | 1 |
| Switching power | 60W/VA |
| Contact resistance (static) | 100mΩ |
| Insulation resistance | 10 9 Ω |
| Breakdown voltage | DC 1,000V |
| Switching time incl. contact chatter | 4.5 ms |
| Contact material | Rhodium |
| Switch hysteresis | 3 ...5% |
| Logo | Description | Country |
|---|---|---|
| EU declaration of conformity ■ EMCdirective ■ Pressure equipment directive ■ ATEX directive (option) 1) Hazardous areas - Ex ia Gas [II 2G Ex ia IIC T6/T5/T4 Gb] Dust [II 2D Ex ia IIIB T135°C Db] Hazardous areas for instruments with PTFE lining - Ex ia Gas [II 2G Ex ia IIB T6/T5/T4 Gb] | European Union | |
| IECEx (option) 1) Hazardous areas - Ex ia Gas [Ex ia IIC T6/T5/T4 Gb] Dust [Ex ia IIIB T135°C Db] Hazardous areas for instruments with PTFE lining - Ex ia Gas [Ex ia IIB T6/T5/T4 Gb] | International | |
| EAC (option) ■ Low voltage directive ■ Hazardous areas 1) | Eurasian Economic Community | |
| GOST (option) Metrology, measurement technology | Russia | |
| KazInMetr (option) Metrology, measurement technology | Kazakhstan | |
| - | MTSCHS (option) Permission for commissioning | Kazakhstan |
| BelGIM (option) Metrology, measurement technology | Belarus | |
| UkrSEPRO (option) Metrology, measurement technology | Ukraine | |
| Uzstandard (option) Metrology, measurement technology | Uzbekistan | |
| - | CPA Metrology, measurement technology | China |
| KCs (KOSHA) (option) Hazardous areas 1) | South Korea | |
| - | CRN Safety (e.g. electr. safety, overpressure, ...) | Canada |
| Type of contact | Dimensions inmm | |
|---|---|---|
| X | Y | |
| Single or double contact | 88 | 55 |
| Double (change-over) contact | 113 | 80 |
| Triple contact | 96 | 63 |
| Quadruple contact | 113 | 80 |
| Scale ranges | Overload safety | Dimensions inmm | ||
|---|---|---|---|---|
| in bar | in bar | d | h ±2 | SW |
| ≤ 0.25 | 40 | 160 | 135 | 27 |
| 100 | 160 | 143 | 22 | |
| > 0.25 | 40 | 100 | 135 | 27 |
| 100 | 100 | 135 | 27 | |
| 400 | 128 | 169 | 22 |
| Type of contact | Dimensions inmm X |
|---|---|
| Single or double contact | 102 |
| Double (change-over) contact | 116 |
| Triple contact | 102 |
| Quadruple contact | 116 |
| Scale ranges | Overload safety | Dimensions inmm | ||
|---|---|---|---|---|
| in bar | in bar | d | h ±2 | SW |
| ≤ 0.25 | 40 | 160 | 165 | 27 |
| 100 | 160 | 173 | 22 | |
| > 0.25 | 40 | 100 | 165 | 27 |
| 100 | 100 | 165 | 27 | |
| 400 | 128 | 199 | 22 |
| Type of contact | Dimensions inmm | |
|---|---|---|
| X | Y | |
| Single or double contact | 97 | 55 |
| Double (change-over) contact | 122 | 80 |
| Triple contact | 105 | 63 |
| Quadruple contact | 122 | 80 |
| Scale ranges | Overload safety | Dimensions inmm | ||
|---|---|---|---|---|
| in bar | in bar | d | h ±2 | SW |
| ≤ 0.25 | 40 | 160 | 135 | 27 |
| 100 | 160 | 143 | 22 | |
| > 0.25 | 40 | 100 | 135 | 27 |
| 100 | 100 | 135 | 27 | |
| 400 | 128 | 169 | 22 |
| Type of contact | Dimensions inmm | |
|---|---|---|
| X | Y | |
| Single or double contact | 141 | 48 |
| Triple contact | 153.5 | 60.5 |
| Scale ranges | Overload safety | Dimensions inmm | ||
|---|---|---|---|---|
| in bar | in bar | d | h ±2 | SW |
| ≤ 0.25 | 40 | 160 | 165 | 27 |
| 100 | 160 | 173 | 22 | |
| > 0.25 | 40 | 100 | 165 | 27 |
| 100 | 100 | 165 | 27 | |
| 400 | 128 | 199 | 22 |
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