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 Pressure Temperature
Mercury Instruments chart recorders provide extremely accurate chart records of pressure and/or temperature. All critical components, including the pressure element, temperature system and chart drive, are manufactured by Mercury Instruments own well-trained craftsmen, assuring you the finest pressure and temperature instruments available.
| Pressure Elements |
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| Diaphragm element for ranges 0-30 psi and below |
Helical element for ranges above 0-30 psi |
Each pressure elements is manufactured by Mercury Instruments to precise specifications using the highest guality materials- Beryllium copper or 316 stainless steel. Each elements deflects 22½° for the design range, is carefully made, heat-treated and cold-worked to remove all hysteresis. The accuracy of each pressure recorder is ±½ chart graduation.
Over-Range Limits
- Helical elements
- up to 500 psi 100%
- above 500 psi +500 psi
- Diaphragm elements 100%
Typical Pressure Ranges
Pressure recorders are offered for ranges from 0 to 10 inches of water column to 0 to 5,000 pounds per square inch gauge. Vacuums to 30 inches of mercury and combination pressure and vacuum are also available. Typical pressure ranges, depending on the availibility of the chart, are:
0-5
|
0-50
|
0-250 |
0-1,200
|
| 0-10 |
0-60 |
0-300 |
0-1,500 |
| 0-15 |
0-75 |
0-375 |
0-2,000 |
| 0-20 |
0-100 |
0-500 |
0-2,500 |
| 0-25 |
0-120 |
0-600 |
0-3,000 |
| 0-30 |
0-150 |
0-750 |
0-4,000 |
| 0-35 |
0-200 |
0-1,000 |
0-5,000 |
Other ranges can be supplied if desired. Dual pressure ranges as well as dual pressure and temperature ranges are available (check with factory). Recorders can be calibrated to metric units of pressure anf temperature.
Pressure Recorders
Mounting
|
Model Number
|
| Wall |
801 |
701
|
1201 |
| Flush |
802 |
702 |
1202 |
| Portable |
803 |
703 |
1203 |
| Pipestand |
804 |
704 |
1204 |
Chart Diameter
|
8" |
12" |
12" Mi
|
Arc Radius
|
6 3/8"
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9 7/16"
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6 3/8"
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Number of Pens
|
1, 2 or 3
|
1 |
1, 2 or 3
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Pressure Recorders with Valvin and Test Connection
| Mounting |
Model Number |
| Wall |
811-S |
711-S |
711-S |
1211-S |
| Pedestal |
812-S |
712-S |
712-S |
1212-S |
| Chart Diameter |
8" |
8" |
12" |
12" |
| Arc Radius |
6 3/8"
|
6 3/8" |
9 7/16" |
6 3/8" |
| Number of Pens |
1 or 2
|
1 or 2
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1 |
1 or 2
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Valve and test fitting is provided with each pressure element. Solid door, tamper-proof case and double-latch bar with padlock-type handle are also provided (811-S and 812-S have hasp closure for padlock).
800 series recorders use 8-inch diameter chart, 6 3/8" are radius.
700 series recorders use 12-inch diameter chart, 9 7/16" arc radius single-pen, or, on some models, the 8-inch chart, 6 3/8" arc radius two-pen.
1200 series recorders use 12-inch Mi chart, 6 3/8" arc radius.
Note: Recorders can also be calibrated to 10-inch diameter chart and other arc radius (check with factory).
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