New technologies heat up temperature market

A review of new temperature measurement devices reflects several interesting developments—some expected and others unexpected—as non-contact and other technologies heat up the temperature market.

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Temperature Spot-Checker
HM70 handheld meter spot-checks temperature and humidity measurements, and supports field checking and calibration of fixed instruments. The unit has a multilingual user interface and a graphical LCD display with data-logging capability. Optional Windows software provides interface to a PC. Low power consumption provides long operation in the field. Options include an analog output and long, stainless-steel probes for spot-checking in ducts. Vaisala; 781/933-4500;

Compatible Couples
CL543 dual thermocouple and RTD calibrator provides direct temperature calibration to transmitters, recorders, controllers, alarms and data acquisition systems. The unit reads RTD and T/C outputs and displays temperature. Features include compatibility with pulsed systems and transmitters; direct temperature input/output; eight standard T/C types available: J, K, E, T, R, S, B, N and mV; and eight RTD curves available in platinum, copper, and nickel. Omega Engineering; 203/359-7815;  

Great Configurations
DSCP and SCTP series temperature transmitters allow configuration of eight operational functions, selection of 12 industry-standard thermocouple types and two standard RTD types, and selection of 270 input ranges. Sensor inputs are linearized using a 23-point interpolation table. Two transmitters are loop powered, deriving power from the input signal, while another accepts external universal power from 24-60 VAC/DC or 85-230 VAC/DC sources. Dataforth; 800/444-7644;

Look Ma, No Wires
Wireless temperature monitoring system measures and transmits temperature and pressure signals out of Division 1 areas to safe area, eliminating need for conduit and wires. The unit offers a range of 3,000 ft with no line of sight, and transmits data at 1–60 sec intervals. It accepts thermocouple, RTD and transducer inputs, and provides RS-232, 4–20 mA, and 0–5 V outputs. It’s available in battery-powered, solar-powered, and AC or DC-powered versions. Adalet Wireless; 216/267-6864;

Temperature Transmitters
STT170 series programmable temperature transmitters feature dual-input models with a variety of output types, including linearized 4-20 ma, HART and Foundation fieldbus protocols. Features include automatic alerts and security, online diagnostics and remote access. Users can program a high or low-limit alarm to activate in case of sensor failure. Temperatures are measured by two dissimilar sensor types that prevent sensor degradation and failure. Honeywell; 800-822-7673;

Air Up There
CO2 and temperature recorder system incorporates a TelAire 7001 monitor and a QuadVolt four-channel data logger to provide real-time viewing of measurements on a PC or laptop. The system provides ±0.10% FSR accuracy and 32,767 measurements per channel of CO2 and temperature. For recording only CO2 or temperature, Volt101 single-channel data logger is available. MadgeTech; 603/456-2011;

Temperature Detector
Model 120 hand-breakable RTDs feature tube-and-wire construction, a thin-film temperature-sensing element, and a Teflon-insulated lead wire in fiberglass and stainless-steel sheaths that measure 18x1/4 in. and 34x1/4 in. Temperature-sensing elements can be constructed of single or dual-platinum, nickel, or copper. Lead wires are supplied as four-wire, six-wire (dual three-wire) or eight-wire (dual four-wire). Weed Instrument; 512/434-2900;

Takes the Heat
Heat Spy DHS215XEL portable infrared thermometer features an adjustable emissivity setting; a temperature range of –58ºF to 1,832ºF; Type K thermocouple, ANSI mini-jack input; and four digit, backlit, dual LCD display for measuring and displaying non-contact and contact temperatures simultaneously. The unit holds and logs measurements to memory, can display minimum, maximum, average, and delta temperature, and includes a settable HI/LOW audible alarm. Data can be sent to a PC using the USB connection and supplied software. Wahl Instruments; 800/421-2853;

Precision Probe
4400T probe thermometer comes with a NIST-traceable certificate of calibration, and is appropriate for use as a temperature calibration standard. The thermistor-based digital thermometer has a range of -20°C to 130°C (-4°F to 266°F) and is accurate to ±0.03°C from -5°C to 70°C (23°F to 158°F) and ±0.05°C over the rest of the range. Features include a low battery indicator and a rubber rocker switch to select between Celsius and Fahrenheit. The unit is powered by a user-replaceable 9 VDC alkaline battery, and has an LCD display, a 7-in stainless-steel probe, and a 6-ft cable. An optional 110VAC adapter is available for continuous use applications. Telatemp; 800/321-5160;

Temperature Handbook
Volume MMV Temperature Handbook, 5th Edition, offers detailed information and specifications on more than 40,000 products for process measurement and control, including thermocouples, RTDs, thermistors, infrared products, embedded Internet controllers, paperless recorders, test equipment, calibration services, handheld instruments, connector designs, thermocouple wire, data acquisition, humidity, transmitters, panel meters, displays, and technical reference material. Omega; 203/359-7815;

Unaffected by Weather
Series RH humidity or humidity/temperature transmitter measures humidity only or humidity and temperature in the harshest environments. The polymer capacitance sensor isn’t affected by condensation, fog, high humidity, or contaminants. The transmitter is a two-wire device with a 4-20 mA loop-powered output. The humidity/temperature version provides dual 4-20 mA output signals with an accuracy of ±2% RH and ±0.9°F at 72°F (±0.3°C at 25°C). Outside air (OSA) models are available. Dwyer Instruments; 800/872-9141;

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