Edgetech Instruments, Inc.

• Series137

The Edgetech Instruments Model 137 Vigilant Aircraft Hygrometer is a rugged, shock mounted military qualified instrument used for the primary measurement of dew point in flight or in installations with existing flow, such as wind tunnels. It features a miniature remote dew point sensor employing a platinum resistance thermometer, and has 15 feet of interconnecting cable to the control unit. Precision calibration units for the linear analog outputs are included. The specially designed dew point sensor is mounted through the skin of the aircraft and is mounted to either the left or right side of the aircraft. The dew point is detected by using chill mirror technology assuring precision accuracy, repeatability and reliability. The Edgetech Instruments Model 137 Vigilant Aircraft Hygrometer is a rugged, shock mounted military qualified instrument used for the primary measurement of dew point in flight or in installations with existing flow, such as wind tunnels. It features a miniature remote dew point sensor employing a platinum resistance thermometer, and has 15 feet of interconnecting cable to the control unit. Precision calibration units for the linear analog outputs are included. The specially designed dew point sensor is mounted through the skin of the aircraft and is mounted to either the left or right side of the aircraft. The dew point is detected by using chill mirror technology assuring precision accuracy, repeatability and reliability. Measure dew points in flight Rugged shock-mounted, military qualified Configuration for left or right hand mounting is available 110Vac power Chilled mirror sensor selection required (Click here for information on sensor selection) Atmospheric Sciences

Edgetech Instruments field-proven chilled mirror technology. One, two or three stage sensors available - integral or remote from controller. NIST traceable calibration certificate. Depression range choice of either 45, 65 or 95°C . (one, two or three-stage cooling) Automatic Balance Control (ABC) Automatically corrects for most mirror contaminants. Automatically restandardizes the instrument. You choose time and interval of restandardization, for best convenience. Increase the length of unattended operation. Dual alarm capability User programmable. Can be set for latching or auto-reset mode. Form C for greater versatility. Serial and analog outputs. RS232 communication with terminal, printer, or computer Remote programming. Data output such as dew point and alarm status. 0-5 VDC, 4-20 mA, 0-10 VDC, or 0-20mA User scalable to drive peripheral devices. Available simultaneously, one output per measurement parameter. Scalable throughout the entire operating range of psychrometric variables. Program via front panel or remote serial port. Pressure transducer input for psychrometric variable.User scalable to drive peripheral devices. Available simultaneously, one output per measurement parameter. Scalable throughout the entire operating range of psychrometric variables. Program via front panel or remote serial port. Pressure transducer input for psychrometric variable. 3 parameter measurement - dew point, temperature, pressure 3 line dislpay and analog outputs Table toprack mount Nema 4 housing option Educational Institutions Government Agencies Metrology Pharmaceuticals

• Series1500

Finally, a portable Dew Point hygrometer that integrates the accuracy and reliability of the Edgetech Instruments chilled mirror, with the battery life and ruggedness required for field use. Introducing the Model 1500 portable chilled mirror hygrometer. This device incorporates all of the standard features that you’ve become accustomed to from Edgetech Instruments, such as drift-free NIST traceable accuracy, low maintenance, high durability and ease of use, in a system that is ideally suited for the demands of field use. Whether you use the Model 1500 as a field transfer standard, or to spot check your process air dryness or Endo gas dew point, you’ll find this system trouble-free to operate. The Model 1500 is a self contained system; not only is there no field assembly required, there’s no need to carry around a myriad of individual components such as control boxes, sensors, cables, pumps, and power cords. Simply attach the sample line, adjust the flow (with the integral flow meter) and turn on the power. Within minutes you’ll be collecting field dew point data with the same chilled mirror accuracy of a lab standard hygrometer. And with a nominal battery life of 12 hours, you will be able to collect for the entire shift or spot check your processes for several days. Primary measurement technique NIST Traceable Rechargeable Batteries Easily transportable in hard protective case Wide measurement range(-75 to 75°C) Microprocessor controlled Self balancing Chilled mirror sensor selection required Compressed Air Educational Institutions Government Agencies Metrology Pharmaceuticals Plastics Power and Energy

• SeriesPPM2

The Edgetech Instruments Model PPM2 is a portable battery powered trace moisture analyzer designed specifically for monitoring moisture levels in dew point and ppm units. This trace moisture analyzer utilizes an electrochemical (P2O5) sensor in combination with a proprietary semi permeable diffusion membrane. The principal of operation applies the Faraday's Law of Electrolysis which measures the dissociation current making it a fundamental measurement of the moisture present. The PPM2 is ideally used in relatively clean, dry, inert gas applications. PPM2-FV Positive Pressure Application, a portable battery powered trace moisture analyzer with a flow valve. PPM2-VP Atmosphere Vacuum Application, a portable battery powered trace moisture analyzer with a vacuum pump. Battery Powered, rechargeable batteries, charger included Fast Response Sensitivity below 1ppm Long sensor life Fundamental measurement of moisture content Displaysoutputs - dew point (CF) and PPM values Air Separators Medical Gas Pharmaceuticals Semiconductor

The Edgetech Instruments Model DewTrakII MO dew pointhumidity transmitter is an optical chill mirror hygrometer designed to continuously measure the moisture content and Barometric pressure in the motor octane testing process. It is used to monitor and ensure compliance with test standards ASTM D2700, D2699, D2885. It guarantees measurement compliance for allowable Humidity range between 25–50 grlb & Pressure 21–30 in Hg (0.1 in Hg). The DewTrak MO powered by 24Vdc and can be easily fitted to existing Knock engine systems. It is specifically designed to measure conditions required for Motor Octane (MON), & Research Octane (RON) It uses the chilled mirror dew point temperature condensation principle to determine the water vapor concentration and barometric pressure measurement of the motor intake air fuel mix. Outputs include 4 to 20mA, 0 to 5 Vdc, or 0-10Vdc and an RS232 serial port as well as electrically isolated relay contacts. • Electronics housed in IP65 enclosure • 4 wire PRT measurement for Dew Point • ±0.5grlb Accuracy for Dew Point • Barometric Sensor • ± 0.044 “ Hg accuracy for Barometric Pressure • Long term stability and repeatability • Manifold Assembly Kit • LCD Display • Comes with a NIST certificate of compliance • Probe is installed in air tight housing with minimal resistance to intake air Automotive Educational Institutions R&D Test & Measurement Dynamometers Engine Test Cells

Edgetech Instruments Pressure Transducer is designed for accurate pressure measurement of gases or liquids compatible with stainless steel. The high level output signal requires no additional signal conditioning and results in excellent stability, accuracy, and fast dynamic response, making the Model PTDM ideal for high performance applications. The stable electronic circuit, combined with Edgetech’s patented variable capacitance sensor, results in the ultimate in design simplicity. The sensor features a one-piece 17-4 PH stainless steel pressure sensor and an insulated electrode, which forms a variable capacitor. As the pressure increases, the capacitance decreases. This change in capacitance is detected and converted to a linear DC electric signal. General Purpose High Accuracy R&D Test & Measurement Vacuum Systems Dynamometers Engine Test Cells

• Series635-1

Accurate Humidity measurements are becoming increasingly important, along with eliminating the hindrance of wires and having the versatility to measure in those areas where cabling is almost impossible. The 635 is the solution for many of those applications. The Edgetech Instruments Model 635-1 is a robust and reliable measuring instrument with the protection class of IP54. The large back lit display allows the user to easily view the dew point, RH and temperature readings. The 635 offers both standard plug-in probes and optional wireless probes that can measure up to a distance of 20 meters. A maximum of 3 wireless probes can be used at one time and can be retrofitted with the 635 at anytime. All probes are equipped with a patented humidity sensor offering long term reliability and guaranteed accuracy based on results from worldwide laboratory tests. The 635 is equipped with a secured carrying strap for safe transporting and has heavy duty magnets on the back to ensure secure attachment at the measuring location. Highest precision ±2%RH Wireless probes can be retro fitted at any time Backlit display Protection type: IP54 Connection up to 3 wireless probes Easy to follow menu Government Agencies

The Edgetech Instruments Model DewTrak II dew point humidity transmitter is an optical chill mirror hygrometer designed to continuously measure the moisture content in gases. The instrument is powered by 24Vdc. The DewTrak II uses the chilled mirror dew point temperature condensation principle to determine the water vapor concentration in gas mixtures, and a platinum resistance thermometer to accurately measure that temperature. Outputs include 4 to 20mA, 0 to 5 Vdc, or 0-10Vdc and an RS232 serial port as well as electrically isolated relay contacts. 4 wire PRT measurement for Dew Point and AT (optional) ±0.2°C Accuracy for both Dew Point and Temperature Long term stability and repeatability RS232, bi-directional, Serial Output Electronics housed in IP65 enclosure (Wall Mount) Aluminum housing for other configurations 2 analog outputs (4-20mA 0-5Vdc to 0-10Vdc selectable) Automotive Educational Institutions Government Agencies HVAC Pharmaceuticals

4-20 mA Loop Powered Two Wire Oxygen Transmitter The Edgetech Instruments Model OxyTrans is an easy to use, accurate and economical way to measure Oxygen at trace and % levels. A simple display and one point calibration allows for a quick start of the instrument. Measuring Range The unit will offer ranges between 0-100ppm, 0-1, 000ppm, 0-10, 000ppm of oxygen. 0-1% to 0-25% O2. Sensor The OxyTrans uses a special fuel cell to measure the oxygen concentration. The sensor meets the industrial requirements for accuracy, sensitivity, easy to use and operating life. A 2 wire explosion-proof in-line oxygen transmitter II 12 G Ex ia IIC T4 (ATEX approved) 4-20mA output Display: 6 digit alphanumeric with bar graph 5 ranges offered: 0-100 ppm, 0-1, 000 ppm, 0-10, 000 ppm, 0-1%, 0-25% Oxygen sensor: a micro fuel cell Easy, accessible potentiometer Air Separators

• SeriesPPM1

The Edgetech Instruments Model PPM1 is a trace moisture analyzer designed specifically for monitoring moisture levels in dew point and PPM units. This trace moisture analyzer utilizes an electro-chemical (P205) sensor in combination with a proprietary semi permeable diffusion membrane. The principle of operation applies the Faraday’s Law of Electrolysis which measures the dissociation current making it a fundamental measurement of the moisture present. The PPM1 is ideally used in relatively clean, dry, inert gas applications. Sensitivity below 1ppm Fast response Long sensor life Low cost Fundamental measurement of moisture content Displays outputs—dew point (CF) and PPM values Air Separators Medical Gas Pharmaceuticals Semiconductor