Page 1
Data Sheet
1125/1125A Differential Pressure Gauge
FEATURES
Rugged design
1125A has 12 o’clock pointer position
Electric contacts (Optional)
Available with diaphragm seals
TYPICAL USES
Refineries
Chemical and petrochemical plants
Water and wastewater pressure control
Mining and metals
Filtration monitoring, level and flow measurement
SPECIFICATIONS
Accuracy: ±2-1-2% of span (ASME B40.100 Grade 1A)
Sizes: 4½˝ or 6˝
Ranges: 10 to 1,000 psi
Process Connection: ¼ NPT
Process Connection
Location:
Case Style: Open Front
Window Material: Glass
Dial: White painted aluminum with black markings
Pointer: Black
Weather Protection: Case is not sealed and reccomended for
Movement: Bronze
Mounting Options: Stem or surface
WETTED COMPONENTS
Bourdon Tube Process Connection Joints
Grade A phosphor
bronze
NON-WETTED COMPONENTS
Case Ring Back Cover
Cast aluminum,
black epoxy coated
Lower or back
weather protected environment only
Bronze Soldered
Aluminum,
black epoxy coated
Aluminum
1125
4½˝, 6˝ dial sizes
1125A
4½˝, 6˝ dial sizes
KEY BENEFITS
• Built in back flange for surface or wall mounting
• Zero center dial to indicate positive or negative
pressure
• Compatible with diaphragm seals
MIN/MAX TEMPERATURE LIMITS
Version Ambient Process Storage
Dry
-20°F to 200°F
(-29°C to 93°C)
-20°F to 250°F
(-29°C to 121°C)
-40°F to 250°F
(-40°C to 121°C)
All specifications are subject to change without notice.
All sales subject to standard terms and conditions.
©2 019 Ash cr oft In c. 1125_ gauge _ds _ R evB _Lt r_ 0 4-11-19
of 51
ashcroft.com
info@ashcroft.com
1.800.328.8258
Page 2
Data Sheet
1125/1125A Differential Pressure Gauge
ORDERING CODE Example:
Dial Size
45 - 4½˝ 45
60 - 6˝
Models
1125 - Aluminum, open front case 1125
1125A - Aluminum, open front case - zero center dial
Process Connection Size
02 - ¼ NPT Male 02
Process Connection Location
L - Lower L
B - Lower back
Options (if choosing an option(s) must include a “X”) X__
45 1125 02 L XC4 100#
Windows/Pointers
PD - Acrylic window
SG - Safety glass
EP - Maximum pointer
EQ - Minimum pointer
SH - Red set hand, stationary
EO - Red set hand, adjustable
Switch Outputs
ED - Dual setpoint, high and low contacts (specify magnetic or inductive contacts)
EE - Dual setpoint, double high contacts (specify magnetic or inductive contacts)
EF - Dual setpoint, double low contacts (specify magnetic or inductive contacts)
EG - Dual setpoint, off at low and high and on in-between
Other
C4 - Individual calibration chart C4
NH - SS tag wired to case
Range (coding example only, see range tables for all standard ranges)
100# - 100 psid 100 #
All specifications are subject to change without notice.
All sales subject to standard terms and conditions.
©2 019 Ash cr oft In c. 1125_ gauge _ds _ R evB _Lt r_ 0 4-11-19
of 52
ashcroft.com
info@ashcroft.com
1.800.328.8258
Page 3
Data Sheet
1125/1125A Differential Pressure Gauge
1125 (210° dial arc) - Single Scale
psid kg/cm
10# (130° dial arc) - - - - 5 0.1 30 psi
15# (130° dial arc) - - - - 5 0.1 30 psi
- - - - - -
20# 1.4KSC 1.4BR 140KPa 20# 5 0.2 30 psi
- 2KSC 2BR 200KPa 28# -
30# - - - - 5 0.5 60 psi
- 4KSC 4BR 400KPa 55# -
60# - - - - 10 1 120 psi
100# 7KSC 7BR 700KPa 100# 10 1 200 psi
160# 11KSC 11BR 1100KPa 160# 20 2 300 psi
200# 14KSC 14BR 1400KPa 200# 20 2 300 psi
300# 20KSC 20BR 2000KPa 300# 50 5 450 psi
400# 28KSC 28BR 2800KPa 400# 50 5 600 psi
600# 40KSC 40BR 4000KPa 600# 100 10 900 psi
800# 56KSC 56KSC 5600KPa 800# 100 10 1200 psi
1000# 70KSC 70BR 7000KPa 1000# 100 10 1500 psi
2
bar kPa
Dual Scale
Outer Scale psi
Figure Interval
Minor
Graduation
Static
Pressure Limits
1125A (210° dial arc) Zero Center Dial - Single Scale
psid kg/cm
10/0/10# 0.7/0/0.7KSC 0.7/0.7BR 70/0/70KPa 10/0/10# 2 0.2 30 psi
15/0/15# - - - - 5 0.5 60 psi
- 1/0/1KSC 1/1BR 100/0/100KPa 14/0/14# -
- 2/0/2KSC 2/2BR 200/0/200KPa 28/0/28# -
30/0/30# - - - - 10 1 120 psi
50/0/50# 3.5/0/3.5KSC 3.5/3.5BR 350/0/350KPa 50/0/50# 10 1 200 psi
80/0/80# 5.5/0/5.5KSC 5.5/5.5BR 550/0/550KPa 80/0/80# 20 2 300 psi
100/0/100# 7/0/7KSC 7/7BR 700/0/700KPa 100/0/100# 20 2 300 psi
150/0/150# 10/0/10KSC 10/10BR 1000/0/1000KPa 150/0/150# 50 5 450 psi
200/0/200# 14/0/14KSC 14/14BR 1400/0/1400KPa 200/0/200# 50 5 600 psi
300/0/300# 20/0/20KSC 20/20BR 2000/0/2000KPa 300/0/300# 100 10 900 psi
400/0/400# 28/0/28KSC 28/28BR 2800/0/2800KPa 400/0/400# 100 10 1200 psi
500/0/500# 35/0/35KSC 35/35BR 3500/0/3500KPa 500/0/500# 100 10 1500 psi
All specifications are subject to change without notice.
All sales subject to standard terms and conditions.
©2 019 Ash cr oft In c. 1125_ gauge _ds _ R evB _Lt r_ 0 4-11-19
2
bar kPa
ashcroft.com
info@ashcroft.com
1.800.328.8258
Dual Scale
Outer Scale psi
Figure Interval
Minor
Graduation
Static
Pressure Limits
of 53
Page 4
Data Sheet
1125/1125A Differential Pressure Gauge
Metric Ranges
Pressure Range Dial Graduations Range Dial Graduations
Type 1125
Type 1125A
kg/cm² bar
0/1.4 0/1.4 0.2 0.02 0/140 20 2 0/20
0/2 0/2 0.5 0.05 0/200 50 5 0/28
0/4 0/4 0.5 0.01 0/400 50 5 0/55
0/7 0/7 0.5 0.1 0/400 50 10 0/100
0/11 0/11 2 0.2 0/1100 200 20 0/160
0/14 0/14 2 0.2 0/1400 200 20 0/200
0/20 0/20 5 0.5 0/2000 250 50 0/300
0/28 0/28 5 0.5 0/2800 500 50 0/400
0/40 0/40 5 0.5 0/4000 500 50 0/600
0/56 0/56 10 1 0/5600 1000 100 0/800
0/70 0/70 10 1 0/7000 1000 100 0/1000
0.7/0/0.7 0.7/0/0.7 0.2 0.02 70/0/70 20 2 10/0/10
1/0/1 1/0/1 0.5 0.05 100/0/100 50 5 14/0/14
2/0/2 2/0/2 0.1 0.01 200/0/200 50 5 28/0/28
3.5/0/3.5 3.5/0/3.5 0.5 0.1 350/0350 50 10 50/0/50
5.5/0/5.5 5.5/0/5.5 2 0.2 550/0/550 200 20 80/0/80
7/0/7 7/0/7 2 0.2 700/0/700 200 20 100/0/100
10/0/10 10/0/10 5 0.5 1000/0/1000 250 50 150/0/150
14/0/14 14/0/14 5 0.5 1400/0/1400 500 50 200/0/200
20/0/20 20/0/20 5 0.5 2000/0/2000 500 50 300/0/300
28/0/28 28/0/28 10 1 2800/0/2800 1000 100 400/0/400
35/0/35 35/0/35 10 1 3500/0/3500 1000 100 500/0/500
Figure
Interval
Minor
Graduation
kPa
(kilopascal)
Dial
Graduations
Minor
Graduation
Outer Range
When Dual Range
Specified psi
All specifications are subject to change without notice.
All sales subject to standard terms and conditions.
©2 019 Ash cr oft In c. 1125_ gauge _ds _ R evB _Lt r_ 0 4-11-19
of 54
ashcroft.com
info@ashcroft.com
1.800.328.8258
Page 5
Data Sheet
1125/1125A Differential Pressure Gauge
DIMENSIONS in [ ] are millimeters
For reference only, consult Ashcroft for specific dimensional drawings
Dial Size
Inches A B C D E H I J P P
1
4
⁄2
6
5.88
[149]
7.81
[198.5]
3.13
[82]
3.13
[79]
5.08
[128]
9.59
[167]
1.23
[26]
1.23
[26]
5.38
[137]
7
[178]
1.56
[40]
1.56
[40]
0.63
[16]
0.59
[15]
0.234
[3]
0.19
[5]
0.66
[17]
0.66
[17]
1 L Wgt
0.59
[15]
0.59
[15]
0.22
[6]
0.28
[7]
3.0 lbs
6.6 kg
3.0 lbs
6.6 kg
3-L dia. holes
equally spaced
on-E dia.
Low pressure
inlet
P
P1
A
B
P
J
C
I
I
H
¼ NPT
P1
High pressure
inlet
D
All specifications are subject to change without notice.
All sales subject to standard terms and conditions.
©2 019 Ash cr oft In c. 1125_ gauge _ds _ R evB _Lt r_ 0 4-11-19
of 55
ashcroft.com
info@ashcroft.com
1.800.328.8258
Loading...