APT Instruments

Manufacturers and distributors of portable instruments, pumps and specialized sensors. See our complete list of product lines on the left. These innovative instruments are designed to meet the test and measurement requirements of today's laboratories and industries. Our goal is to provide our present and future customers with the components and/or the complete integrated system for their new instrument or measurement and control applications.

Air Velocity	Air velocity provides important information on air and wind speed. Monitor the efficiency of your heating and air conditioning system or the force of the wind in your outdoor location.
	AV1000 Thermo-Anemometers - Monitor both air velocity and temperature with this portable instrument. Modular probe allows placement of sensor in remote application

Conductivity	Conductivity is an important parameter indicating the quality of water and other liquids. We have developed a special module to work with our DL300 data logger that allows the collection of pH, Conductivity and Dissolved Oxygen for a water sample. Use one or all three probes at the same time. ATC is provided with temperature inputs for Pt100 or Pt1000 RTDs.

Data Loggers	Data acquisition is required for monitoring and improving all routine functions and operations. APT offers a wide range of instruments options to simplify this repetitive task. Select from compact data loggers that can be programmed, then left on location for a period of time and multiple-input instruments for more involved applications. All systems have Windows-compatible software options.
	DL1000 Data Loggers - Our lowest priced data loggers monitor temperature and collect up to 8000 data points. These water-proof sensors are ideal for use in many rugged plant applications. (OEM) DL100 Data Loggers - Small, compact data loggers can be programmed for many applications. Storage in many models for over 32,000 data points. Select one of fourteen models. (OEM) DL300 Data Loggers - Portable hand-held solutions that provide multiple input capabilities in a flexible solution to your data acquisition requirements. Select from a range of special input modules to simplify multiple sensor applications. Use ONE instrument for most of your measurement applications. (OEM)

Dissolved Oxygen	Dissolved oxygen is an important quality indicator of water and other liquids. We have developed a special module to work with our DL300 data logger that allows the collection of pH, Conductivity and Dissolved Oxygen for a water sample. Use one or all three probes at the same time. ATC is provided with temperature inputs for Pt100 or Pt1000 RTDs.

Flow Meters	Flow meters are an important part of many fluid handling systems. They provide feedback on the rate or total volume of fluid that has moved past the sensor. We offer several different types of products to fit your requirements. Small, chemical-resistant variable-area flow meters provide a visual indication of flow rate. Electronic sensors provide electronic output signals (and digital display in some models) for integration with data loggers or system controls providing a higher level of system control.
	*FM10 Direct Reading Flow meters* - Small, compact flow meters with direct reading scales in for liquids (up to 750 m/min) or for air (up to 2 SCFM). *FM80 Direct Reading Flow meters* - Larger flow meters with MPT threads for larger flow rates (liquids up to 18 LPM; air up to 12 SCFM). FD100 Liquid Flow meters - Compact flow meters with pelton-turbine design. Flow rates up to 1000 ml/min. 0 to 5 Vdc proportional output. *FD110 Liquid Flow meters* - FD100 flow meters with digital display. Flow rates up to 1000 ml/min. 0 to 5 Vdc proportional output. *FD150 Turbine meters* - Battery-operated turbine flow meters for in-line operation. Digital display of flow rate and total. Flow rates up to 50 GPM. *FD200 Digital Flow meters* - Electronic paddle-wheel flow meters adapt easily to many process applications. Digital display of Flow rate or Total. Flow rates up to 30 LPM. Digital output signal transmits up to 1 mile.

pH Meters	pH is a quick measurement that gives the relative hydrogen ion concentration activity for a liquid. It is becoming an everyday measurement that is as important in laboratory research, municipal water treatment, process control and preventative maintenance. We offer two different product lines to solve these everyday measurement challenges. The portable pH2000 meter with RS232 output is at home in the lab or in the field. For special multiple measurement applications, we have developed several modules that allow simultaneous measurements of up to 3 pH electrodes. Additional modules are available that combine pH electrodes with different types of probes for multiple parameter measurement.
	pH2000 Portable pH Meter - Portable hand-held meter that provides a low-cost flexible solution to your measurement and data acquisition requirements. Select a meter and a pH electrode (with or without ATC) for a quick start. (OEM

Pressure	Pressure is an important parameter to monitor for many applications. Higher pressures can indicate blockages in the filter, fluid line or outlet. Lower pressures can be signs of system leaks or supply problems.
	MP2000 Pressure Manometer - Select one of four portable instruments to monitor your system up to 100 psig (6.8 bar). Select engineering units adapts easily to any application.

Pumps	Check out our complete line of pump products. These products are selected with the end-user and the OEM in mind. Our peristaltic pumps are some of the smallest pumps on the market. Enjoy the benefits of peristaltic pumps in your application without the high price. Select one of our other pumps for your specialized application.
	*SP100 Micro Pump* - Small, compact design is among the smallest in the market. Flow rates from 0.4 to 24 ml/min. Select from ac or dc motors. *SP200 Mini Pump* - Designed to deliver slightly higher flow rates than our SP100. Small size is ideal for many applications. Flow rates from 2.1 to 84 ml/min. *SP200CM Cased Pump* - SP200 pumps are mounted in a rugged wash-down (IP65) housing. Variable-flow. *SP200LDS Dispensing Pump* - Mount these small dispensing pumps in almost any location to deliver period chemicals, grab samples or to transfer fluids. Built-in timer turns unit on/off over a 24-hr or 7-day period. *SP300 Compact Pump* - The SP300 pumps deliver a high flow rate for their small size. Ideal for sampling or dispensing larger volumes of fluid. Flow rates from 10 to 600 ml/min. *SP400 High Volume Pump* - The larger SP400 pumps are designed for industrial flow applications. Design these rugged tubing pumps into your next industrial machine. Flow rates from 0.2 to 4 liters/min. *PM110 Metering Pump* - Rugged diaphragm metering pump with adjustable stroke length adjustment for flow control. Economical, continuous-duty pump. *M150 Metering Pump* - Solenoid-driven diaphragm metering pump dual flow control (stroke frequency and stroke length). Chemical resistant, high pressure applications. Select from manual only or manual/remote control models. Integrate easily into pH control system. (OEM) PC40 Centrifugal Pump - Compact, high volume pumps are best for higher fluid transfer applications of clear liquids *PG10 Gear Pump* - Small, compact gear pump with a variety of motor options. Delivers smooth flow. Will not run dry or handle dirty fluids. (OEM) *POS10 Pump* - Specialty pumps provide fluid transfer at a very affordable price in a small package. Range of voltages available. (OEM) *PAD10 Pump* - Tiny diaphragm pump is ideal for air and gas sampling. Small Vdc design is ideal for incorporating into air analyzers. Up to 1100cc/min

Refractometers	Refractive Index is a simple way to monitor fluid concentrations for many different materials including sugar, water, protein, glycol, battery acid and many more. We have two different refractometer products that will provide cost-effective solutions to your test and measurement requirements.
$APT Refractometers$	*HR100 Refractometers* - These compact, portable refractometers require only a few drops of fluid for an accurate concentration measurement. Use throughout the food, agricultural, chemical and manufacturing industries. HR200 Refractometers - This battery-operated refractometer provides a digital display of brix in seconds. Use in the lab or carry throughout the plant, the is instrument will give fast readings from 0 to 32 Brix. Ideal for food manufacturing applications. *HR300 Refractometers* - Use this portable refractometer with modular probes for more accurate test and analysis in the plant and laboratory. Powerful data logging and graphic display of the meter collect data for analysis and display trends in readings. Select from two different probes depending up measurement range - 1.3000 to 1.4000 nD and 1.4000 to 1.6000 nD. *Refractive Index Sensor* - Do you have a unique measurement application requiring refractive index testing? Test the SPR (Surface Plasmon Resonance) SPREETA sensor in your application. System comes complete with software, hardware and 50 sensors for application development in your research. (OEM Inquiries Invited)

Relative Humidity	Monitor Relative Humidity in your environment to improve physical comfort and save precious energy. Good RH control reduces HVAC costs, preserves museum artifacts and enables cultivation of plants and vegetables inside large greenhouses. We offer several different types of products to fit your requirements. Sample data continuously with our data loggers for a record of historical changes. Use portable instruments for spot measurements and verification of installed systems.
	*RH1000 RH Pen* - Small, pen-sized thermo-hygrometer fits easily into pocket or tool box. Great little tool for indication of room temperature and relative humidity. *RH1100 RH Pen* - Slightly larger, pocket-sized thermo-hygrometer provides larger display for 0.1% RH resolution and dew point. Protective cap. *RH1210 RH Pen* - Modular meter and probe enables delivers greater accuracy of RH readings with flexible positioning of the probe. RS-232 Output. *RH100 RH/Temp Transmitter* - Low-cost Vdc-powered transmitter provides continuous analog (Vdc) output proportional to RH and Temp of the environment. Ideal for integration into control system.

RF Transmitters	RF transmitters provide a wireless transfer of monitoring and control signals between sensors, monitors, controllers and data collection devices. Wireless systems simplify installations for hard to reach locations and eliminate ground loop problems. These instruments have already been pre-approved for use and are ready for immediate installation. Select from small one-way transmitters (DL160) to two-way master/slave systems (DL180).
	DL160 RF Transmitters - Get the benefit of real-time data acquisition without the mess of wires. These small, compact state-of-the-art RF transmitters (418 MHz) simplify data collection from remote applications. Select from seven models. DL180 RF Transmitters - These powerful transmitters (900 MHz ISM band) are ideal for applications where two-way communication is desired. Master/Slave setups reduce lost signals and confusion between multiple receiving antennas. (OEM)

Sound Level Meters	Environmental noise is increasing in our everyday lives. It effects both workplace efficiency and personal health. Monitor noisy areas for safe levels of exposure. Ideal for monitoring traffic noise, alarm systems and workplace machinery.
	*SL1200 Sound Level Meter* - Low cost, portable instrument provides digital display of sound level from 40 to 130 dB. *SL2100 Sound Level Meter* - Portable instrument provides wider measurement range with larger, backlit display. RS-232 Output

Temperature	Requirements for temperature measurement are everywhere. We recognize this by offering a wide range of temperature monitoring instruments. Select the one that best fits your application.
	TIR1000 Infrared Thermometer - Small, easy to use instruments. Built-in laser for easy sighting. 8:1 distance to spot ratio. -20 to 420°C. (OEM) *TIR1100 Infrared Thermometer* - Small, pocket-sized instrument with adjustable emissivity for more accurate readings. Built-in laser for easy sighting. 6:1 distance to spot ratio. -20 to 320°C. (OEM) *TT1200 Thermometer* - Basic type K thermocouple thermometer at a very attractive price. (OEM) *TT2210 Thermometer* - Dual-channel thermocouple thermometer accepts type K, J or T thermocouples. Large, triple display screen. RS-232 Output. (OEM) *TT001 Thermocouple Probes* - Select from a range of low-priced thermocouples for your application. All with color-coded ANSI mini-connectors (OEM) *TR001 RTD Probes* - Select from a range of low-priced Pt100 probes for your application. Select from round DIN or flat ANSI mini-connectors. (OEM) *TS001 Solar Thermometers* - Monitor temperatures with a low cost meter that never requires batteries. Solar panel recharges batteries with indoor light. Remote probe is easily mounted in hard-to-reach locations. (OEM)

Tubing & Fittings	Connecting sensors, pumps, valves and instrumentation together for smooth fluid transfer is an important part of all systems. Fitting and tubing options found here are a few of those that we have available. It is important to consider size, compatibility, durability and cost when installing these components. The tubing and fittings listed here are ideal for extension tubing for the pumps listed on this web-site. Check the specific pump page for replacement pump tubing.
	*Flexible Tubing* - Select from a range of tubing materials and sizes to fit your application. *Hose Barb Fittings* - Easy to use, low cost fittings are ideal for connecting soft tubing materials. Select from a variety of sizes and materials. STA-PURE™ Tubing - New tubing material that is a composite of silicone and expanded PTFE. Low spallation, higher operating pressures and temperatures make this a new peristaltic pump tubing to consider for your specialty applications. Available in high-purity and chemical resistant formulations.