Digital Hygrometers using Thin-Film Polymer Technology

Hygrometers are instruments used for measuring Relative Humidity (RH). A capacitive RH sensor is employed which consists of a thin layer of water absorbent, polymeric or inorganic material, that is coated onto a conductive base. The layer is then covered with a porous conductive layer. As the relative humidity increases the water content of the polymer increases. Water has a high dielectric constant. This means that the combination of the two electrodes with the water between can store more electric charge. This electrical capacity is measured by applying a rapidly reversing (AC) voltage across the plates and measuring the current that passes. Note that the polymer or inorganic material (often aluminum oxide) plays only an indirect part in the measurement: it is the abundance of water molecules that is measured.

NTC Thermistors asTemperature Sensors

The NTC Thermistors are Negative Temperature Coefficient metal oxide thermal resistors utilizing ceramic semiconductor technology to measure temperature. The changes in resistance characteristics vs. temperature are utilized to determine temperature in a relative fast response accurate manner.

CA846 Digital Thermometers 2121.24

The Thermo-Hygrometer Model CA846 is a portable, compact digital meter designed for simplicity and one-hand operation. The meter uses an NTC as the temperature sensor, providing excellent response time to changes in temperature, good repeatability and accurate readings. The Model CA846 also utilities a thin film polymer capacitive type relative humidity sensor as hygrometer sensor, offering excellent recovery from 100% moisture, and fast response time and durability.

• Features
• Easy one-hand operation
• Measures temperature in °F and °C
• Accurate NTC Temperature Sensor
• 2000-count backlit LCD
• Auto-HOLD function
• Includes rugged, shockproof, protective, dirt resistant holster
• Removable protective sensor cover
• Applications
• Greenhouses Humidity
• Office and Storage Area Environments
• Labs
• Marine environments
• Environmental studies
• Monitor Humidity Sensitive Process Environments
• Weather monitoring
• Perform HVAC Maintenance

Ordering Information		Data Sheet	Price
AEMC CA8462121.24	AEMC CA846 Digital Hygrometer		$145.00	Buy Now

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CA861 Digital Thermometers 2121.26

• Features
• Dual Channel Temperature Measurements
• Measures temperature in °F and °C
• 3 1/2 digit backlit LCD
• 2000-count backlit LCD
• Includes rugged, shockproof, protective, dirt resistant holster
• High Resolution 0.1°
• Applications
• Process control monitoring and troubleshooting
• Food safety and processing
• Automotive repair and maintenance
• HVAC installation and maintenance
• Chemical processing

	Ordering Information		Price
AEMC CA861 2121.26	CA861Digital Thermometer		$75.00	Buy Now

CA863 Digital Thermometers 2121.26
The AEMC CA863 Digital uses a type K Thermometer, is a portable, compact meter designed to use external K thermocouples as temperature sensors. The Model CA863 offers dual inputs for performing differential measurements.
Features include MAX and HOLD functions, a high resolution 0.1° setting and an easy-to-read 3 1/2 digit backlit LCD. The Model CA863 offers the ability to easily switch between temperature readings on both channels (T1 & T2) and differential (DT).

• Features
• Dual Channel Temperature Measurements
• Measures temperature in °F and °C
• 3 1/2 digit backlit LCD
• 2000-count backlit LCD
• Measures Differential Temperature
• Includes rugged, shockproof, protective, dirt resistant holster
• High Resolution 0.1°
• Applications
• Process control monitoring and troubleshooting
• Food safety and processing
• Automotive repair and maintenance
• HVAC installation and maintenance
• Chemical processing

	Ordering Information		Price
AEMC CA863 2121.27	CA863 Infrared Thermometer		$95.00	Buy Now

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Digital Thermometers CA865 Digital Thermometers  2121.28 The RTD Thermometer Model CA865 is a portable, compact digital meter designed to use an RTD Pt385/100W as the temperature sensor for precise temperature measurements in a variety of environments. The RTD probe provides for fast response time, accurate measurements and good repeatability. Features include a 3 1/2 digit backlit LCD with readings to 1999. The meter is supplied with one RTD probe and a shockproof, protective holster. Accurate RTD sensor included Fast Response Excellent Repeatability 2000-count backlit LCD Auto-HOLD function Includes rugged, shockproof, protective, dirt resistant holster Easy one-hand operation Applications Electrical troubleshooting(Detects Overheated Breakers) Food safety and processing Automotive repair and maintenance Marine maintenance and repairs Test faulty motor winding insulation Test overheated high voltage transformers Test terminals on circuit breaker panels Perform HVAC energy audits     Ordering Information   Price   AEMC CA865 2121.28 CA865 Digital Thermometer $85.00 Buy Now Link to Instek DC Power Supply Selection Guide Please e-mail ATEquip.com for Product Availability or a Price and Delivery Quotation. Thank you.

NIST Traceable Calibration Certificates

To assist our customers in satisfying ISO-9001:2000, section 8.2, certified monitor and measurement calibration requirements, ATEQUIP.com can supply for all of the Vitrek products, certified NIST traceable calibration certificates from an ANSI/NCSL Z540-1-1994 compliant-accredited/ ISO 17025 accredited calibration laboratory. Please contact us directly for information on your specific test equipment interest.