C437E1012 Pressure or differential - pressure limit controls for industrial gas systems. SPST mercury switch. Opens circuit on pressure fall. Manual reset. 1/2 to 5 PSI.Max sustained operating pressure 15.0 PSI (103.4 kPa)
| Product #: | C437E1012 | |
| Product Name: | Honeywell Gas Pressure Limit Switch | |
| Description: | Pressure or differential - pressure limit controls for industrial gas systems. SPST mercury switch. Opens circuit on pressure fall. Manual reset. 1/2 to 5 PSI. FEATURES: Use C437 for spst switching or C637 for spdt switching. Compensate for momentary surges in gas pressure with a restrictive orifice in inlet pressure channel on the models with pressure range of 1 to 26 in. wc (0.25 to 6.5 kPa). Resume operation by manually resetting when using lockout application models. Impede tampering and provide dust-resistant operation with enclosed setting. Increase strength of control diaphragm with Buna-N fiber-reinforced material. Clear glass cover allows observation of interior mechanism to aid in setting and checkout. Mercury switch provides visual indication of switch position. APPROVALS: Underwriters Laboratories Inc. Listed: File No. MP2168, Guide No. MFHX. Canadian Standards Association Certified: File No. LR1620, Guide No. 380-W-1.16. Factory Mutual Approved: Report Nos.22018,24127, J.I.IF4A3.AF. Industrial Risk Insurers Acceptable. TEMPERATURE RATINGS: 32 F to 125 F (0 C to 52 C). PIPING CONNECTIONS: 1/2 in. NPT female for main or high pressure. 1/8 in. NPT female for vent or low pressure. REPLACEMENT PARTS: 106729 Cover Glass, 6 in. (152.5 mm) diameter. 106747 Cover Retaining Ring for C437 and C637 models manufactured before 1973. 118733-00021 Retaining Clip for C437 and C637 models manufactured since 1975. 139870A Cover Glass for rainproof enclosures. ACCESSORIES: 122160 Orifice - 0.018 in. (0.46 mm) diameter. 124674 Orifice - 0.011 in. (0.28 mm) diameter. 4074BWK Mounting Brackets, for surface mounting. Differential at midscale. Subtractive for C437D, J, G. Additive for C437E, F, H, K and C637B. | |
| Information: | ||
| Package Type: | Each | |
| Units Per Package: | 1 | |
| Product Details: | ||
| -Applications: | Safety Shutoff, Pressure and differential - pressure limit controls for industrial gas systems. | |
| Pressure Range: | 1/2 to 5 psi | |
| Differential: | 1/4 psi, (1.72 kPa) | |
| Pressure Surge, Maximum: | 15.0 psi, 103.4 kPa | |
| Sustained Operating Maximum: | 15.0 psi, 103.4 kPa | |
| Switch Mercury: | Spst, Breaks on Fall | |
| Switch Action (Breaks): | Fall | |
| Reset, Manual (Lockout On Switch Break): | Yes, Manual Reset | |
| Switch Contact Rating (120 Vac) | 8.0 AFL, 48.0 ALR, 10.0 resistive | |
| Switch Contact Rating (120 Vdc) | 2.4 AFL, 24.0 ALR, 5.0 resistive | |
| Switch Contact Rating (240 Vac) | 5.1 AFL, 30.6 ALR, 5.0 resistive | |
| Switch Contact Rating (240 Vdc) | 1.2 AFL, 12.0 ALR, 2.0 resistive | |
| Minimum Order Quantity: | 1 | |
| Trade Name: | Honeywell | |
| Trade Name Type: | Registered Trademark |
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