Page 1
Data Sheet
Acid Leak Detection (ALD) Assembly
FEATURES
Acid sensing component (yellow in photo turns red
when exposed to acid with a pH ≤ 3.0)
Available with pressure ranges to 10,000 psi
Gauge welded to seal standard
Available with Halocarbon® fill for oxidizing acids
Optional orange or yellow gauge case for indentification
Available with Silicone-free PLUS! ™ Performance
Custom dials available
SPECIFICATIONS
Accuracy: ±1.0% of span (1259, 1279) or ±1.5% of span (T6500)
Process Connection Size:
Case Style: Solid front with pressure relief back
Pointer: Micrometer, adjustable, aluminum
Weather Protection: Hermetically sealed: IP66
Diaphragm Seal Type: 510 Threaded, DF Flanged
Window Material: Shatterproof glass, acrylic (OPT.)
Tamper Proof Design: Diaphragm seal welded to gauge socket
Pressure Rating (MAWP):
1
⁄2 NPT
Vac. to 1,500 psi @ 100°F: (STD.)
1,500 to 10,000 psi @ 100°F: (OPT.)
1259 Pressure Gauge
With 510 Seal Assembly
1279 Pressure Gauge
With Flanged DF Seal Assembly
1279 Pressure Gauge
With 510 Seal Assembly
WETTED COMPONENTS
Diaphragm: 316L SS, Hastelloy
®
C-276, Monel
®
Lower Housing: (510 only) 316L SS, Hastelloy® C-276, Monel®
NON-WETTED COMPONENTS
Top Housing: 316L SS, Monel
Consult material selector/corrosion guide at www.ashcroft.com for acid compatibility
A l l s p e c i fi c a t i o n s a r e s u b j e c t t o c h a n g e w i t h o u t n o t i c e .
All specifications are subject to change without notice.
A l l s a l e s s u b j e c t t o s t a n d a r d t e r m s a n d c o n d i t i o n s .
All sales subject to standard terms and conditions.
© 2 0 1 7 A s h c r o f t I n c . A s h B u l O T C - 1 , R e v . A , 1 1 / 1 7
©2018 Ashcroft Inc. ald2_ds1, 04/18
®
(510 only)
ashcroft.com
ashcroft.com
info@ashcroft.com
info@ashcroft.com
1.800.328.8258
1.800.385-0635
KEY BENEFITS
• Tamper proof design, gauge welded to seal
• Visual indication of leaking process media
• Dual containment for safety
1
Page 2
Data Sheet
Acid Leak Detection (ALD) Assembly
ORDERING CODE Example: 45 ALD 1 S 1P P 4 G 100# -X OC
Dial S ize
45 - 4½˝ Dial (available only with cases 1 and 2) 45
10 - 100mm Dial (available only with case 3)
Assembly
ALD - Acid leak detection ALD
Case
1 - 1279 (available only with dial size 45)
2 - 1259 (available only with dial size 45)
3 - T6500 (available only with dial size 100mm)
Bourdon Tube & Gauge Process Connection
S - 316 SS S
P- Monel
Diaphram Seal and Material
1S (510) - 316L SS
1P (510) - Monel
1H (510) - Hastelloy® C-276
2S (DF) - 316L SS
2P (DF) - Monel
2H (DF) - Hastelloy® C-276
2U (DF) - Tantalum
Lower Housing Material (510 seal only)
N - No lower housing for DF seal
S - 316L
P - Monel® (available only with (P-Monel®) diaphragm material) P
H - Hastelloy® C-276 510 seal
Process Connection Size and Type
04 - ½ NPT Male
1A - 1˝ 150RF Flange DF seal
1B - 1˝ 300RF Flange DF seal
1C - 1˝ 600RF Flange DF seal
1D - 1.5˝ 150RF Flange DF seal
1E - 1.5˝ 300RF Flange DF seal
1F - 1.5˝ 600RF Flange DF seal
2A - 2˝ 150RF Flange DF seal
2B - 2˝ 300RF Flange DF seal
2C - 2˝ 600RF Flange DF seal
2D - 2˝ 1500RF Flange DF sea l
3A - 3˝ 150RF Flange DF seal
3B - 2˝ 300RF Flange DF seal
3C - 2˝ 600RF Flange DF seal
3D - 2˝ 9 00RF Flange DF seal
3E - 2˝ 1500RF Flange DF sea l
System Fill Fluid
G - Glycerin G
S - Silicone
H - Halocarbon
Range (see data sheet)
100# - 100 psi
Options (if in choosing an option(s) mu st include an “X”
HP - High pressure seal option for ranges 2,000 psi to 10,000 psi
LL - PLUS! ™ Performance (1279, T6500 only)
NZ - Silcone free PLUS! ™ (1279, T6500 only)
OC - Orange case (available only with case 1) OC
PD - Acrylic window (recommended for HF applications)
YC - Yellow case (available only with case 1)
®
®
(available only with (P-Monel®) lower housing) 1P
®
®
1
100#
X
A l l s p e c i fi c a t i o n s a r e s u b j e c t t o c h a n g e w i t h o u t n o t i c e .
All specifications are subject to change without notice.
A l l s a l e s s u b j e c t t o s t a n d a r d t e r m s a n d c o n d i t i o n s .
All sales subject to standard terms and conditions.
© 2 0 1 7 A s h c r o f t I n c . A s h B u l O T C - 1 , R e v . A , 1 1 / 1 7
©2018 Ashcroft Inc. ald2_ds1, 04/18
ashcroft.com
ashcroft.com
info@ashcroft.com
info@ashcroft.com
1.800.328.8258
1.800.385-0635
2
Page 3
Data Sheet
Acid Leak Detection (ALD) Assembly
1259, 1279 Pressure Ranges
psi bar kPa mPa kg/cm
30IMV N1BR N100KP N1MP N1KG
Vacuum
– N1/.6BR N100/60KP .1/.06MP N1/.6KG
V/15# – – – –
– N1/1.5BR N100/150KP N.1/.15MP N1/1.5KG
V/30# – – – –
– N1/3BR N100/300KP N.1/.3MP N1/3KG
V/60# – – – –
Compound
– N1/5BR N100/500KP N.1/.5MP N1/5KG
V/100# – – – –
– N1/9BR N100/900KP N.1/.9MP N1/9KG
15# 1BR 100KP .1MP 1KG
20# – – – –
– 1.6BR 160KP .16MP 1.6KG
30# – – – –
– 2.5BR 250KP .25MP 2.5KG
60# 4BR 400KP .4MP 4KG
– 6BR 600KP .6MP 6KG
100# – – – –
120# – – – –
– 10BR 1000KP 1MP 10KG
160# – – – –
200# – – – –
– 16BR 1600KP 1.6MP 16KG
300# – – – –
– 25BR 2500KP 2.5MP 25KG
400# – – – –
500# – – – –
600# 40BR 4000KP 4MP 40KG
Positive Pressure
800# – – – –
– 60BR 6000KP 6MP 60KG
1000# – – – –
1500# 100BR 10000KP 10MP 100KG
2000# – – – –
– 160BR 16000KP 16MP 160KG
3000# – – – –
– 250BR 25000KP 25MP 250KG
4000# – – – –
5000# – – – –
6000# 400BR 40000KP 40MP 400KG
8000# – – – –
– 600BR 60000KP 60MP 600KG
10000# – – – –
T6500 Pressure Ranges
2
psi bar kPa mPa kg/cm
30IMV N1BR N100KP N1MP N1KG
Vacuum
– N1/.6BR N100/60KP .1/.06MP N1/.6KG
V/15# – – – –
– N1/1.5BR N100/150KP N.1/.15MP N1/1.5KG
V/30# – – – –
– N1/3BR N100/300KP N.1/.3MP N1/3KG
V/60# – – – –
Compound
– N1/5BR N100/500KP N.1/.5MP N1/5KG
V/100# – – – –
– N1/9BR N100/900KP N.1/.9MP N1/9KG
15# 1BR 100KP .1MP 1KG
20# – – – –
– 1.6BR 160KP .16MP 1.6KG
30# – – – –
– 2.5BR 250KP .25MP 2.5KG
60# 4BR 400KP .4MP 4KG
– 6BR 600KP .6MP 6KG
100# – – – –
120# – – – –
– 10BR 1000KP 1MP 10KG
160# – – – –
200# – – – –
– 16BR 1600KP 1.6MP 16KG
300# – – – –
– 25BR 2500KP 2.5MP 25KG
400# – – – –
500# – – – –
600# 40BR 4000KP 4MP 40KG
Positive Pressure
800# – – – –
– 60BR 6000KP 6MP 60KG
1000# – – – –
1500# 100BR 10000KP 10MP 100KG
2000# – – – –
– 160BR 16000KP 16MP 160KG
3000# – – – –
– 250BR 25000KP 25MP 250KG
4000# – – – –
5000# – – – –
6000# 400BR 40000KP 40MP 400KG
8000# – – – –
– 600BR 60000KP 60MP 600KG
10000# – – – –
2
A l l s p e c i fi c a t i o n s a r e s u b j e c t t o c h a n g e w i t h o u t n o t i c e .
All specifications are subject to change without notice.
A l l s a l e s s u b j e c t t o s t a n d a r d t e r m s a n d c o n d i t i o n s .
All sales subject to standard terms and conditions.
© 2 0 1 7 A s h c r o f t I n c . A s h B u l O T C - 1 , R e v . A , 1 1 / 1 7
©2018 Ashcroft Inc. ald2_ds1, 04/18
ashcroft.com
ashcroft.com
info@ashcroft.com
info@ashcroft.com
1.800.328.8258
1.800.385-0635
3
Page 4
Data Sheet
3.36
5.20
Ø 5.81
[147.6]
[85.3]
[132.1]
3.36
Ø 5.07
Ø 5.81
[147.6]
[85.3]
[128.9]
Ø 5.81
[147.6]
H2
H
HEIGHT
Ø D
Acid Leak Detection (ALD) Assembly
DIMENSIONS in [ ] are millimeters
1259/510 Seal Assembly
Ø 5.81
[147.6]
9.27
3.74
[95]
1
⁄2 ˝ NPT
Ø 2.26
[57.5]
1279 or 1259/DF Seal Assembly
1279/510 Seal Assembly
Ø 5.81
[147.6]
9.27
1
⁄2 ˝ NPT
Ø 2.26
[57.5]
1279 or 1259/DF Seal Dimensions
SIZEDNPRESSURE
CLASSES
150
1˝
300
150
1½˝
300
150
2˝
300
Ø D H
4.33
[110]
4.92
[125]
4.92
[125]
6.10
[155]
5.91
[150
6.50
[165]
[68.8]
[69.8]
[69.8]
[72.9]
[71.3]
[74.5]
2.71
2.75
2.75
2.87
2.81
2.93
H2
HEIGHT
8.835
[224.4]
8.875
[225.4]
8.875
[225.4]
8.995
[228.5]
8.935
[223.95]
9.055
[230]
MIN
SPAN
1bar
14.5 psi
WEIGHT
lbs [kg]
3.3
[1.5]
4.4
[2.0]
4.6
[2.1]
7.7
[3.5]
66
[3.0]
88
[4.0]
A l l s p e c i fi c a t i o n s a r e s u b j e c t t o c h a n g e w i t h o u t n o t i c e .
All specifications are subject to change without notice.
A l l s a l e s s u b j e c t t o s t a n d a r d t e r m s a n d c o n d i t i o n s .
All sales subject to standard terms and conditions.
© 2 0 1 7 A s h c r o f t I n c . A s h B u l O T C - 1 , R e v . A , 1 1 / 1 7
©2018 Ashcroft Inc. ald2_ds1, 04/18
ashcroft.com
ashcroft.com
info@ashcroft.com
info@ashcroft.com
1.800.328.8258
1.800.385-0635
4