2. Gas stream is exposed to discreet wavelengths of ultraviolet light (source light from the mercury vapor lamp passes through a filter and collimating lens).
Compressor oil to be detected in the gas stream must contain naphthalene quinoline. This compound is preset in all oil processed from continental shelf petroleum. If synthetic lubricants are to be used it is suggested you contact SUPERPRESSURE, INC. indicating the type of lubricant to be used. You will then be advised of the types and amounts of additives necessary to render the lubricant detectable with this instrument.

3. If and when contamination is present, fluorescence will occur at the pick-up plate due to excitation of the naphthalene quinoline upon exposure to the ultraviolet source. Fluorescent emission will pass through the refraction blocking filter to the Photomultiplier Tube where it is transformed to a weak electrical signal and fed to the Photomultiplier Microphotometer for amplification and visual indication of intensity.

The Photomultiplier Microphotometer is provided with a 115v, 60Hz circuit that can be made to trigger a visual or audible alarm, a motor controller, an electrically-actuated shut-off valve, or any combination of these devices, thus warning of contamination in the gas stream. A built-in, fail-safe feature actuates the same alarm(s) in the event of tube or power failure.


SPECIFICATIONS

1. Sizes: Detector Unit: 14 in. Long x 8 in. Wide x 12 in. High.
Photomultiplier Microphotometer: 8 in. Deep x 8 in. Wide x 4 1/2 in. High.
Power Supply for Mercury Lamp: 4 in High x 6 1/2 in. Wide x 8 1/2 in. Long.

2. Weights: Detector Unit: 35 lbs.
Photomultiplier Microphotometer: 5 lbs.
Power Supply for Mercury Lamp: 10 lbs.

3. Photomultiplier Microphotometer and Detector Unit: 75 Watts Total Draw (Does Not Include Alarm).

4. Photomultiplier Microphotometer and Power Supply may be mounted either with the Detector or Remotely.

5. Warm-up Time: Approximately 15 Minutes.
Shut-Down Time: Approximately 15 Minutes to Allow Mercury to Condense.

6. Potted (Encapsulated) Photomultiplier tubes (Type 1P21) are Used to Stabilize Drift and Output Shift Often Experienced with Conventional Photomultiplier Tubes Whose Resistor Network and Terminals are Exposed to Ambient Humidity.

7. Cell Constructed of Stainless Steel: Windows are of Ultrasil Quartz.

8. Cell Rated for Maximum Pressure of 15,000 psi and 30,000 psi at Maximum Working Temperature of 370°F.

9. The 9/16-in.

SUPERPRESSURE TUBING

10. Mercury Lamp is a Phillips Type HPK-125W with Ultraviolet Transmitting Envelope; Rated Life is 500 Hours, but may be Less if Lamp is Started Frequently. Lamp Starting Voltage is Approximately 450 Volts a.c.; Operating Voltage is Approximately 250 volts AC.

11. Stabilizer ballast Transformer Maintains Intensity of the Mercury Lamp, Constant within 1% for Line Voltage Variations of 105 to 125v.

PHOTOMULTIPLIER MICROPHOTOMETER

The solid state Photomultiplier Microphotometer is a highly sensitive ammeter which responds to small currents produced by the photomultiplier tube. In this system, intensity of fluorescence is proportional to the level of oil contamination. The needle deflection is directly proportional to the level of oil contamination. A high level and low level relay-trip-control circuit can be used to sound an alarm and/or turn off the compressor or close an electrically activated valve. This instrument is sufficiently sensitive to detect reliably naphalene quinoline in quantities as small as 0.1 micrograms per milliliter.

The front control panel incorporates the following controls: power, multiplier, sensitivity adjust, zero adjust as described below:

1. H.V. when the power switch is turned to this position a well regulated 700V DC is applied to the photomultiplier dynode chain.

2. The multiplier control is a four position switch which permits the sensitivity to be varied in four fixed steps: 100, 10, 1, and 0.1; This provides a total variation of 100 to 1.

3. The sensitivity adjust control provides continuous sensitivity variation over a range of 10 to 1. Thus sensitivities may be adjusted to block out oil flow below a critical oil content in the gas stream.

4. The zero adjust provides a bucking current to cancel out dark current and up to 25% of the least sensitive scale in unwanted background illumination.

5. The high and low level trips are preset. If a continual record of the contamination level is required, output for a recorder is provided. Any recorder with 1 to 100 mV full-scale may be used since a recorder output calibration pot is provided.


ORDERING INFORMATION

47-16015-5 DETECTOR ASSEMBLY - For 15,000 psi maximum pressure. Complete with stainless steel detector with primary and secondary filters mounted in one place; one Cat. No. 47-16224. Photomultiplier Tube (Type 1P21) with integral cable for connection to Photomultiplier Microphotometer; One 62155062500 mercury vapor lamp and one P1502040700 stabilizer ballast transformer that powers the mercury lamp. For 115V, 60 Hz Operation
47-16015-6 DETECTOR ASSEMBLY - Same as 47-16015-5 except for 30,000 psi maximum pressure.