Options
Ashcroft
®
Duragauge
®
Pressure Gauge
Case and ring options Code Comments
Hermetically Sealed Case H Available on types 4
1
⁄
2˝ 1279 and 4
1
⁄
2,˝ 6˝ 1379 models only.
Gauge Heater HD Used for outdoor applications or other services where ambient temperatures
are –50°F. Available on 4
1
⁄
2˝ 1379 model only.
Flush Mounting Ring - Steel, Black Epoxy 56 Available on 4
1
⁄
2˝ 1279 and 4
1
⁄
2,˝ 6˝ 1379 models only (also called 1278 flush mounting ring).
Flush Mounting Ring - Stainless Steel, Polished 57 Available on 4
1
⁄
2˝ 1279 and 4
1
⁄
2,˝ 6˝ 1379 models only (also called 1278 flush mounting ring).
Bourdon tube and system assembly options
AND10050-4 (
1
⁄
4˝ Tubing Conn.) AM
1
⁄
4˝ High Pressure Tubing Conn. 09 Standard on ranges 30,000 psi and up.
Overload Stop OS Used to protect the gauge against extreme pressures.
Underload Stop VS Used to protect low pressure gauges against vacuum.
Throttle Screws – Brass, stainless steel and Monel TS 0.031˝ Standard. Other sizes: .006, .0135, .020, .040, .050 and .070 (Monel .040 only).
Capillary Bleeder BG Available in model 1379, 4
1
⁄
2˝ Lower conn. only with stainless steel system. Max. pressure 1000 psi.
Tip Bleeder TB Available in bronze, St. St. or Monel Bourdon tube gauges only. Max. pressure 15,000 psi.
Cleaning for Gaseous Oxygen 6B Not available with steel or bronze and
PLUS!
option Bourdon tubes. If Gauge is liquid-filled specify
Halocarbon as the fill.
Cleaning for Liquid Oxygen Service 6D
Free from Mercury Contamination MF Provided with free from mercury contamination certification (CD-2).
Link options
Slotted Link for Sudden Pressure Increase RJ
Unless specified, slotted link set for pressure increase. Accuracy 1% F.S. with slotted link.
Slotted Link for Sudden Pressure Decrease S4
Liquid-filling options
Silicone Fill GV
Halocarbon Fill GX For oxidixing media. Examples: chlorine, oxygen, nitric acid and sulfuric acid.
Pointer options
Red Set Hand (Single) SH Single stationary set hand used to indicate a specific pressure.
Red Set Hand (Double) SJ Double stationary set hand used to indicate 2 specific pressures.
Red Set Hand (Adjustable) EO Internally adjustable.
Maximum Pointer EP Externally reset by a knob on outside of an acrylic window.
Minimum Pointer EQ Externally reset by a knob on outside of an acrylic window.
Window options
Acrylic Window PD Ambient temperature limits –50/180°F.
Laminated Safety Glass SG Ambient temperature limits –50/200°F.
Non Glare Glass NG Ambient temperature limits –50/350°F.
Marking and tagging options
Dial Marking DA Service marking printed on dial.
Paper Tagging of Carton and Gauge NN Tag is bonded to gauge case and carton.
Stainless Steel Tagging of Gauge Case NH 300 series stainless steel tag is wired to gauge case.
Calibration options
Calibrate to Absolute Pressure AB
Test and certificate options
Mass Spectrometer Leak Test ML
Special Certificate of Conformance CD-1A Non standard certificate of conformance.
Certificate of Conformance CD-1 Conformance to specifications and/or drawings.
Free From Mercury Contamination CD-2 Conformance to specifications and/or drawings and free from mercury contamination.
Individual Certified Calibration Chart CD-4
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