1131 ASHCROFT | Alldatasheet
Document overview
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Technical content
FEATURES
High static pressure capability (up to 3,000 psi) Ranges from 5 psi to 100 psi Reed switches (optional) for direct system control Superior magnets for smoother pointer motion Buna-N Diaphragm & O-rings (others available) Rolling diaphragm actuator (cannot see reverse pressure) TYPICAL USES Filtration monitoring Flow measurement Leak detection and pressure drop KEY BENEFITS
- No migration of processing media
- Economical means for measuring differential pressure
- Switch outputs available
- 5 year warranty WETTED COMPONENTS Actuator O-Rings/Diaphragm Body Material Rolling Diaphragm Buna-N Aluminum, brass or stainless steel Ceramic magnet and SS spring are also wetted components NON-WETTED COMPONENTS Case Material Window Stainless steel Glass (STD.), safety glass or plastic (OPT.) SPECIFICATIONS Accuracy: ±2% ascending pressure full scale differential Ranges: 0-100 psi Process Connection Location: Lower, back/in-line Process Connection Sizes: ¼ NPT Female (STD.), 1⁄8 or ½ NPT Female Adapters (OPT.) Migration: Zero Maximum Process Temperature: 175°F (80°C) Minimum Ambient Temperature: Buna-N Diaphragm -4°F (-20°C) EPDM Diaphragm -40°F (-40°C) Viton Diaphragm 32°F (0°C) Maximum Static Pressure: 3,000 psi Weather Protection: IP65 1131 2½˝, 3½˝, 4˝, 4½˝, 6˝ dial sizes RATINGS FOR REED SWITCHES Switches Contact Rating Current Voltage SPST 10 VA ac (rms) or dc (Max.)
0.5 Amp ac (rms) or
dc (Max.)
100 Vac/Vdc
(Max.) SPDT 3 VA ac (rms) or dc (Max.)
0.3 AMP ac (rms) or
dc (Max.)
30 Vac/Vdc
(Max.) All specifications are subject to change without notice. All sales subject to standard terms and conditions. ©2019 Ashcroft Inc. 1131_gauge_ds_RevD_Ltr_01-20 ashcroft.com info@ashcroft.com 1.800.328.8258 Data Sheet
1131 Differential Pressure Gauge
ORDERING CODE Example: 25 1131 A D 25 S XV1 5# Size 25 - 21/2˝ 25 35 - 31/2˝ 40 - 4˝ 45 - 41/2˝ 60 - 6˝ Series 1131 - Rolling Diaphragm (Cannot see reverse pressure) 1131 Body Material A - Brass A F - Aluminum S - Stainless steel Case Fill D - Dry D L - Glycerin fill (Liquid fill has an effect on accuracy that varies with range and temperature) Process Connection Size 25 - 1/4 NPT Female 25 Process Connection Location S - In-Line S L - Lower B - Back Options (If choosing an option(s) must include an “X”) X__ BF - Surface mounting plate CS - Dual scale DD - Color band (any combination of green, yellow, red) GE - 1∕8 NPT Female adapters GM - 1/2 NPT Female adapters EP - Maximum pointer FF - Front flange VD - Viton® Diaphragm and O-rings EM - EPDM Diaphragm and O-rings GV - Silicone fill (Recommended for outdoor use even though unit is hermetically sealed) PD - Plastic window SG - Safety glass (N/A on 2 1/2˝ case) TM - Pipe mounting bracket V1 - 1-SPST switch w/DIN plug (Adj. 30-100% of range, Preset @ 90%) V1 V2 - 1-SPST switch w/terminal strip (Adj. 30-100% of range, Preset @ 90%) V3 - 2-SPST switch w/DIN plug (Adj. 30-100% of range, Preset @ 90%) V4 - 2-SPST switch w/terminal strip (Adj. 30-100% of range, Preset @ 90%) V5 - 1-SPDT switch w/DIN plug (Adj. 30-100% of range, Preset @ 90%) V6 - 1-SPDT switch w/terminal strip (Adj. 30-100% of range, Preset @ 90%) V7 - 2-SPDT switch w/DIN plug (Adj. 30-100% of range, Preset @ 90%) V8 - 2-SPDT switch w/terminal strip (Adj. 30-100% of range, Preset @ 90%) Range (coding examples only, see range table on page 3 for all standard ranges) 5# - 5 psi 5# All specifications are subject to change without notice. All sales subject to standard terms and conditions. ©2019 Ashcroft Inc. 1131_gauge_ds_RevD_Ltr_01-20 ashcroft.com info@ashcroft.com 1.800.328.8258 Data Sheet
Dial Size A B D D1 D2 Bolt Circle 1131- Single Scale psid kg/cm2 bar kPa - 0.25KSC 0.25BR 25KPa 5# - - - 7# 0.5KSC 0.5BR 50KPa 10# 0.75KSC 0.75BR 75KPa 15# 1KSC 1BR 100KPa 20# - - - 25# - - - 30# 2KSC 2BR 200KPa - 2.5KSC 2.5BR 250KPa 40# - - - 60# 4KSC 4BR 400KPa 100# 7KSC 7BR 700KPa DIMENSIONS For reference only, consult Ashcroft for specific dimensional drawings. 0.165˝ BOLT CIRCLE
3 PLACES
3.48˝ 4.37˝ D B A 0.75˝ SQ. ¼ NPT FEMALE
2 PLACES
120∞ REGULAR CASE FLANGED CASE 0.165˝ BOLT CIRCLE 3.48˝ 4.37˝ D B A 0.75˝ SQ. ¼ NPT FEMALE 120∞ REGULAR CASE FLANGED CASE All specifications are subject to change without notice. All sales subject to standard terms and conditions. ©2019 Ashcroft Inc. 1131_gauge_ds_RevD_Ltr_01-20 ashcroft.com info@ashcroft.com 1.800.328.8258 Data Sheet